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Sample records for larus dominicanus aves

  1. Kelp gulls, Larus dominicanus (Aves: Laridae, breeding in Keller Peninsula, King George Island, Antarctic Peninsula

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    Joaquim O. Branco

    2009-09-01

    Full Text Available We examined the distribution, abundance and density of the Kelp Gull, Larus dominicanus (Lichtenstein, 1823, at Keller Peninsula on two occasions during the breeding season of 2007-2008 (once for incubation and once for chick stages and compared our results with previously published data. We present information on the number of eggs, incubation success, and initial development of L. dominicanus chicks in the studied sites. The abundance and density of the species has remained statistically similar in Keller Peninsula over the last 30 years (since 1978-1979. Although the abundance and density were almost unchanged, we recorded alterations in the occupation of the breeding areas by L. dominicanus, mainly the abandonment of breeding sites in the eastern portion of Keller Peninsula. The results of the present study compared with similar previous investigations on the abundance of L. dominicanus indicate that the populations have been in equilibrium over the years.

  2. Variação sazonal na abundância de Larus dominicanus (Aves, Laridae no Saco da Fazenda, Itajaí, Santa Catarina Seasonal variation in the abundance of Larus dominicanus in the Saco da Fazenda, Itajaí, Santa Catarina, Brazil

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    Luis Augusto Ebert

    2009-12-01

    Full Text Available A gaivota Larus dominicanus (Lichtenstein, 1823 é uma das aves marinhas costeiras mais comuns do litoral brasileiro, sendo capaz de utilizar vários hábitats e explorar diferentes fontes alimentares. O estuário do Saco da Fazenda é uma importante área de forrageamento e descanso para a espécie. O objetivo deste trabalho foi o de avaliar a estrutura populacional de L. dominicanus no estuário. Durante o período de fevereiro/2004 a janeiro/2005, as gaivotas foram monitoradas mensalmente, com intervalos de duas horas entre os censos, das 6 h às 20 h. As oscilações observadas na população ao longo do ano foram significativas, sendo as maiores contagens registradas em março (181,6 ± 35,1 e as menores em outubro (21,0 ± 4,9. A ocupação do estuário foi gradativa a partir das primeiras horas do dia, culminando com as maiores abundâncias às 14 h (72,4 ± 14,2. Ao final do dia, o número de aves reduziu-se significativamente, com as menores abundâncias às 20 h (3,8 ± 3,0. Através da Análise de Componentes Principais (ACP, foi possível estabelecer correlação positiva entre a abundância de gaivotas e a temperatura do ar. As oscilações encontradas na abundância de L. dominicanus durante o estudo podem ser atribuídas a eventos do ciclo de vida da espécie e as diferenças observadas no número de gaivotas ao longo do dia ao período de atividade da frota pesqueira.The gull Larus dominicanus (Lichtenstein, 1823 is one of the most common coastal seabirds of the Brazilian coast, exploring several habitats and food types. The estuary known as Saco da Fazenda is an important feeding and resting area for the species. In this paper, we evaluate the population structure of L. dominicanus in this area. From February/2004 to January/2005, gulls were monitored in monthly census in Saco da Fazenda at intervals of two hours from 6:00 a.m. to 8:00 p.m. The fluctuations observed in the abundance of L. dominicanus along the year were

  3. Piojos (Phthiraptera: Insecta) de aves de la familia Laridae (Aves: Charadriiformes) en Chile

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    GONZÁLEZ-ACUÑA, DANIEL; FISCHER, CHRISTOF; PALMA, RICARDO; MORENO, LUCILA; BARRIENTOS, CARLOS; MUÑOZ, LISANDRO; ARDILES, KAREN; CICCHINO, ARMANDO

    2006-01-01

    Seis especies de piojos (Phthiraptera: Philopteridae, Menoponidae) fueron colectadas sobre cuatro especies de aves marinas de la familia Laridae en la costa de Chile. Se registran: Saemundssonia sternae (Linnaeus, 1758) y Quadraceps sellatus (Burmeister, 1838) sobre el gaviotín boreal (Sterna hirundo, Linnaeus, 1758); Saemundssonia lari (O. Fabricius, 1780), Quadraceps punctatus (Burmeister, 1838) y Quadraceps ornatus (Grube, 1851) parasitando a la gaviota dominicana (Larus dominicanus Lichte...

  4. HEAVY METALS LEVELS IN LARUS DOMINICANUS. CASE STUDY: COROA GRANDE MANGROVE, SEPETIBA BAY, RIO DE JANEIRO, BRAZIL

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    Aldo Pacheco Ferreira

    2011-01-01

    Full Text Available Samples of liver and kidney of Kelp gull (Larus dominicanus collected on Sepetiba Bay, Rio de Janeiro, Brazil, were analysed for their copper, zinc, cadmium, lead, chromium and nickel content. All the analyses were made using the inductively coupled plasma optical spectrometry method (ICP-OES. The investigation focused on the variability of the elements content in kidney and liver from a number of sampling seabirds and over different seasons. The results were interpreted using the analysis of variance test (ANOVA. This has revealed differences in concentration for the majority of elements with regard to organs, and how different sampling metals and organs are related to each other. Results indicate relatively high trace etalcontamination in L. dominicanus, showing potential power of idespread biological and mutagenic adverse effects in trophic levels, and herefore, signalling risk to human health.

  5. HEAVY METALS LEVELS IN LARUS DOMINICANUS. CASE STUDY: COROA GRANDE MANGROVE, SEPETIBA BAY, RIO DE JANEIRO, BRAZIL

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    Aldo Pacheco Ferreira

    2011-01-01

    Samples of liver and kidney of Kelp gull (Larus dominicanus) collected on Sepetiba Bay, Rio de Janeiro, Brazil, were analysed for their copper, zinc, cadmium, lead, chromium and nickel content. All the analyses were made using the inductively coupled plasma optical spectrometry method (ICP-OES). The investigation focused on the variability of the elements content in kidney and liver from a number of sampling seabirds and over different seasons. The results were interpreted using the analysis ...

  6. Patrón de actividad y abundancia de aves en un relleno sanitario de Chile central Abundance and activity-pattern of birds at a landfill in central Chile

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    GABRIEL LOBOS; PATRICIO BOBADILLA; ALEJANDRA ALZAMORA; ROBERTO F THOMSON

    2011-01-01

    Los rellenos sanitarios constituyen un foco de atracción para la avifauna, aunque las implicancias de esta relación no han sido exploradas en el país. Nosotros monitoreamos la actividad de aves en un relleno sanitario ubicado en las proximidades de la ciudad de Santiago, capital administrativa de Chile. Las principales aves en el área fueron la gaviota dominicana (Larus dominicanus Lichtenstein), el tiuque (Milvago chimango Vieillot), la garza boyera {Buculbus ibis Linnaeus) y el águila (Gera...

  7. Patrón de actividad y abundancia de aves en un relleno sanitario de Chile central Abundance and activity-pattern of birds at a landfill in central Chile

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    GABRIEL LOBOS

    2011-03-01

    Full Text Available Los rellenos sanitarios constituyen un foco de atracción para la avifauna, aunque las implicancias de esta relación no han sido exploradas en el país. Nosotros monitoreamos la actividad de aves en un relleno sanitario ubicado en las proximidades de la ciudad de Santiago, capital administrativa de Chile. Las principales aves en el área fueron la gaviota dominicana (Larus dominicanus Lichtenstein, el tiuque (Milvago chimango Vieillot, la garza boyera {Buculbus ibis Linnaeus y el águila (Geranoaetus melanoleucus Swann. La gaviota dominicana alcanzó los valores de abundancia más altos (entre 358 y 1950 individuos por día y destacó por su comportamiento bimodal, directamente relacionado con los niveles de operación en el relleno sanitario. En el caso del águila se registró una conducta carroñera cleptoparásita sobre los tiuques, estos últimos seleccionan desechos orgánicos (pescados, tripas, carne, que les son usurpados por ellas. Finalmente señalamos medidas simples de manejo que deberían disminuir los números de aves en este tipo de actividad industrial.Landfills are considered an attractive habitat for several bird species; however, implications of this condition have not yet been explored in the country. We monitored birds' activity patterns that use a landfill located in the vicinity of Santiago, Chile's capital. Main birds recorded in the area were, Kelp gull (Larus dominicanus Lichtenstein, Chimango caracara (Milvago chimango Vieillot, Cattle egret (Buculbus ibis Linnaeus and Black Chested Eagle (Geranoaetus melanoleucus Swann. Kelp Gull was the most abundant species, (with values between 358 to 1950 individuals per day and that also displayed a bimodal behavior linked directly to the landfill operation levels. In the case of Black Chested Eagle, we observed a kleptoparasitic behavior over Chimango Caracara which selected organic offal (fishes, innards, meat for its feeding and that are stolen by the eagle. Finally we

  8. Morfometría y fecundidad de Profilicollis bullocki Mateo, Córdova & Guzmán 1982 (Acanthocephala: Polymorphidae en especies simpátricas de aves costeras de Chile Morphometry and fecundity of Profilicollis bullocki Mateo, Córdova & Guzmán 1982 (Acanthocephala: Polymorphidae in sympatric coastal bird species of Chile

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    CLAUDIA RIQUELME

    2006-12-01

    Full Text Available Se describe y se compara la morfología y fecundidad de individuos adultos del acantocéfalo Profilicollis bullocki Mateo, Córdova & Guzmán 1982 (Acanthocephala: Polymorphidae extraídos del intestino de cuatro especies de aves costeras Larus dominicanus Lichtenstein 1823, Larus pipixcan Wagler 1831, Podiceps occipitalis Garnot 1826 y Numenius phaeopus Linné 1758, capturadas en Caleta Lenga (36º45' S, 73º10' O, Chile. Los resultados señalan que la identidad de la especie hospedadora es un factor relevante para entender las variaciones de la morfología y de la fecundidad del parásito. Los acantocéfalos recolectados desde L. dominicanus y L. pipixcan eran los de mayor tamaño corporal. Además, la fecundidad de los parásitos aumentaba con su tamaño corporal. Sin embargo, el análisis de los residuos de la regresión entre la fecundidad y la longitud total del cuerpo de P. bullocki mostró que la fecundidad del parásito en L. dominicanus es similar a la encontrada en L. pipixcan y que en estas especies es significativamente mayor que la encontrada en los parásitos recolectados de P. occipitalis. Se discute que para establecer qué hospedadores son de mejor calidad para este parásito, aparte de su desempeño reproductivo del parásito en cada especie hospedadora, es necesario también considerar la abundancia de los hospedadores y la magnitud que alcanzan las poblaciones del parásito en cada una de ellasWe describe and compare the variations in morphology and fecundity of Profilicollis bullocki Mateo, Córdova & Guzmán 1982 (Acanthocephala: Polymorphidae adults collected from 4 alternative sympatric and definitive marine coastal bird host species (Larus dominicanus Lichtenstein 1823, Larus pipixcan Wagler 1831, Podiceps occipitalis Garnot 1826 and Numenius phaeopus Linné 1758, sampled at Caleta Lenga, Chile (36º45' S, 73º10' W. Results show that the specific identity of the host species is a relevant factor to explain morphometric

  9. Dioxins and polychlorinated biphenyls concentrations in Larus dominicanus. Case study: Marambaia island, Sepetiba bay, Rio de Janeiro State, Brazil - doi: 10.4025/actascibiolsci.v35i3.18344

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    Aldo Pacheco Ferreira

    2013-08-01

    Full Text Available Seabirds play a significant role as bioindicators: they are conspicuous, relatively easy to observe, well-established studied group of organisms, and in the focus of public interest due to pollution in aquatic ecosystem. Systematically, a significant number of man-made chemicals have been introduced in the marine environment and represent the major problem arising in the development worldwide. Many of these chemical contaminants are persistent, known to bioaccumulate and biomagnify through the aquatic food web, affecting species associated with aquatic systems. Dioxins [polychlorinated dibenzo-p-dioxins (PCDD, dibenzofurans (PCDF] and polychlorinated biphenyls (PCB concentrations were measured in Kelp gull Larus dominicanus collected from 2006 to 2011 on Marambaia Island, Sepetiba Bay, Rio de Janeiro State, Brazil. Detectable liver concentrations of PCDD Fs-1 and PCBs were found in all samples analyzed. These represent some of the first measurements of PCDD Fs-1 and PCBs in seabirds from this area. Although levels of these contaminants in the tested species currently appear to fall below critical values, a continuous and systematic monitoring on these compounds becomes essential and desirable to not express toxic values in the future.   

  10. Pesca associada entre golfinhos e aves marinhas Feeding associations between dolphin and sea birds

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    Emygdio L. A. Monteiro-Filho

    1992-01-01

    Full Text Available Along ten years of study of a common dolphin from the brazilian coast, Sotalia brasiliensis Van Beneden, 1874, I could see some occasions of feeding associations of this dolphin with five species of birds, Sula leucogaster (Boddaert, 1783, Fregata magnificens Mathews, 1914, Sterna hirundinacea Lesson, 1831, Larus dominicanus Lichtenstein, 1823 and Phalacrocorax olivaceus Humboldt, 1895. The commonest association observed was between the dolphin and S. leucogaster, and in all the associations was characterized the commensalism, with advantaged to the birds.

  11. Increased Wounding of Southern Right Whale (Eubalaena australis Calves by Kelp Gulls (Larus dominicanus at Península Valdés, Argentina.

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    Carina F Marón

    Full Text Available At least 626 southern right whale (Eubalaena australis calves died at the Península Valdés calving ground, Argentina, between 2003 and 2014. Intense gull harassment may have contributed to these deaths. In the 1970s, Kelp Gulls (Larus dominicanus began feeding on skin and blubber pecked from the backs of living right whales at Valdés. The frequency of gull attacks has increased dramatically over the last three decades and mother-calf pairs are the primary targets. Pairs attacked by gulls spend less time nursing, resting and playing than pairs not under attack. In successive attacks, gulls open new lesions on the whales' backs or enlarge preexisting ones. Increased wounding could potentially lead to dehydration, impaired thermoregulation, and energy loss to wound healing. The presence, number and total area of gull-inflicted lesions were assessed using aerial survey photographs of living mother-calf pairs in 1974-2011 (n = 2680 and stranding photographs of dead calves (n = 192 in 2003-2011. The percentage of living mothers and calves with gull lesions increased from an average of 2% in the 1970s to 99% in the 2000s. In the 1980s and 1990s, mothers and calves had roughly equal numbers of lesions (one to five, but by the 2000s, calves had more lesions (nine or more covering a greater area of their backs compared to their mothers. Living mother-calf pairs and dead calves in Golfo Nuevo had more lesions than those in Golfo San José in the 2000s. The number and area of lesions increased with calf age during the calving season. Intensified Kelp Gull harassment at Península Valdés could be compromising calf health and thereby contributing to the high average rate of calf mortality observed in recent years, but it cannot explain the large year-to-year variance in calf deaths since 2000.

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    African Journals Online (AJOL)

    Many animal species benefit from resources provided by other species. ... 98), we observed behavioral interactions at the Punta Lobería Southern Sea-lion ... by Black Vulture Coragyps atratus, Kelp Gull Larus dominicanus and Domestic Dogs.

  13. Mortandad de aves marinas durante "El Niño 1997-98" en el litoral sur de San Juan de Marcona, Ica -Perú

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    Manuel Apaza

    2014-06-01

    Full Text Available Entre agosto de 1997 y abril de 1998, se evaluó, al sur de la punta guanera de San Juan de Marcona, la mortandad de las poblaciones de aves marinas. Especies de alimentación exclusivamente pelágica y de distribución restringida al ámbito de la Corriente Peruana, como las aves guaneras Pelecanus thagus, Sula variegata y Phalacrocorax bougainvillii, el pingüino Spheniscus humboldti y el zarcillo Larosterna inca, mostraron una correlación significativa en el comportamiento mensual, relacionados con la temperatura superficial del mar y con la ausencia del recurso anchoveta Engraulis ringens durante el evento "El Niño". Otras especies consideradas en el análisis presentaron una mortandad diferente, como la gaviota de Franklin Larus pipixcan y la gaviota gris Larus modestus, en ambos casos, las especies se alimentaron de recursos alternativos, como Calosoma sp. y Emeríta analoga, respectivamente.

  14. Kelp gulls prey on the eyes of juvenile Cape fur seals in Namibia ...

    African Journals Online (AJOL)

    The kelp gull Larus dominicanus is an abundant and highly successful avian predator and scavenger that breeds along the coastline in the Southern Hemisphere, ranging from Antarctica to the tropics. On account of its dietary breadth, wide-ranging foraging strategies, and acclimation to modified landscapes, this species ...

  15. Estimates of numbers of kelp gulls and Kerguelen and Antarctic ...

    African Journals Online (AJOL)

    Four species are regular breeders at the islands: Subantarctic skua Catharacta antarctica, kelp gull Larus dominicanus, Antarctic tern Sterna vittata and Kerguelen tern S. virgata. The latter three species currently each have populations of below 150 breeding pairs at the islands. Kelp gull numbers appear to be relatively ...

  16. Presencia y abundancia de aves de la Isla Farallón de San Ignacio, Sinaloa

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    Miguel Angel Guevara Medina

    2015-06-01

    Full Text Available Para determinar la presencia y abundancia de aves que utilizan la isla Farallón de San Ignacio, Sinaloa, documentamos las aves observadas durante 46 visitas de cinco días a la isla entre 2003 y 2008. Registramos 57 especies de aves. En la isla anidaron regularmente cinco especies de aves marinas:Sula nebouxii, S. leucogaster, Phaethon aethereus, Phalacrocorax auritus y Larus heermanni. En 2008 anidó una rapaz, Falco peregrinus. Además, observamos 24 especies de aves acuáticas no reproductoras y 27 especies de aves terrestres. La temporada reproductiva de las especies anidantes coincide con la época de alta productividad primaria en el sur del Golfo de California. La isla es importante como sitio de anidación para P. aethereus y es una de las dos colonias más importantes en el Golfo de California. Para el resto de las especies anidantes, la isla tiene una importancia marginal, pues otras islas albergan colonias mayores. Debido a la ausencia de vegetación, las aves terrestres usan la isla sólo de manera ocasional y por breves periodos, especialmente los migrantes neotropicales durante la migración. Al comparar con otras islas de la parte sur del Golfo de California, Farallón de San Ignacio exhibió una riqueza de especies mayor a lo esperado de acuerdo con su tamaño. Esta discordancia se podría explicar por un esfuerzo mayor en el muestreo y posiblemente por la existencia de una mayor cantidad de especies de aves terrestres usando los hábitats costeros de Sinaloa y dispersándose ocasionalmente a islas cercanas.

  17. Seasonal patterns in numbers of Kelp Gulls Larus dominicanus ...

    African Journals Online (AJOL)

    Between 66% and 80% of Kelp Gulls recorded around Port Elizabeth were in adult plumage. It is assumed that adults breeding outside of the Port Elizabeth area move into the area after breeding. During their first year Kelp Gulls showed distinct periods of influx — thought to be due to the fledging of local birds — followed ...

  18. Kelp gulls Larus dominicanus nest in Antarctica, at subantarctic ...

    African Journals Online (AJOL)

    spamer

    mainly with fledging feathers, but with small amounts of down feathers, taken on 27 January 1993 at Ichaboe. Island, Namibia (26°17′S, 14°56′E). The chicks had dark feathers, with buff fringes on the scapulars, wing coverts and tail, and brown under- parts. That half of the bill nearest the tip was black, the iris dark brown ...

  19. Monitoring organic contaminants in eggs of glaucous and glaucous-winged gulls (Larus hyperboreus and Larus glaucescens) from Alaska

    International Nuclear Information System (INIS)

    Vander Pol, Stacy S.; Becker, Paul R.; Ellisor, Michael B.; Moors, Amanda J.; Pugh, Rebecca S.; Roseneau, David G.

    2009-01-01

    Gull eggs have been used to monitor contaminants in many parts of the world. The Seabird Tissue Archival and Monitoring Project (STAMP) is a long-term program designed to track trends in pollutants in northern marine environments using seabird eggs. Glaucous and glaucous-winged gull (Larus hyperboreus and Larus glaucescens) eggs collected in 2005 from seven Alaskan colonies were analyzed for organic contaminants. Concentrations ranged from below detection limits to 322 ng g -1 wet mass in one egg for 4,4'-DDE and differed among the samples collected in the Gulf of Alaska and Bering and Chukchi Seas. Chick growth and survival rates may be affected by the contaminant levels found in the eggs, but the eggs should be safe for human consumption if they are eaten in small quantities. STAMP plans to continue collecting and banking gull eggs for future real-time and retrospective analyses. - Organic contaminant concentrations in Alaskan gull eggs could possibly be affecting chick growth and survival rates, but the eggs should be safe for humans to eat in small quantities

  20. Preliminary assessment of contaminants in the sediment and organisms of the Swartkops Estuary, South Africa.

    Science.gov (United States)

    Nel, L; Strydom, N A; Bouwman, H

    2015-12-30

    Urban estuaries are susceptible to metal and organic pollution, yet most remain understudied in South Africa with respect to the presence, concentrations and distribution of contaminants. Metal and organic chemical concentrations were assessed in sediment and organisms from different trophic levels in the lower reaches of the Swartkops Estuary. Species sampled included Upogebia africana (Malacostraca: Upogebiidae), Gilchristella aestuaria (Clupeidae), Psammogobius knysnaensis (Gobiidae), Mugil cephalus (Mugilidae), Lichia amia (Carangidae), Argyrosomus japonicus (Sciaenidae), Pomadasys commersonnii (Haemulidae) and Larus dominicanus (Avis: Laridae). This study is one of the most comprehensive studies to date assessing pollution levels in a food web in estuaries in South Africa. Due to biomagnification, higher concentrations of Arsenic, Lead, Mercury and Cadmium were found in the juveniles stages of popular angling fishes. High concentrations of Cadmium and Arsenic were recorded in the liver of L. amia, A. japonicus and P. commersonnii which exceed international quality food guidelines. Eggs from the gull, L. dominicanus, showed detectable concentrations of PCBs. Copyright © 2015 Elsevier Ltd. All rights reserved.

  1. Aves y literatura. El vuelo de las aves por la literatura

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    Ricardo Andrés Manrique Granados

    2016-01-01

    La presencia de las aves en la literatura de Colombia puede rastrearse hasta sus inicios. Para todos es inmediata la imagen del ave negra de la María (1867), obra del vallecaucano Jorge Isaacs que cumple un papel figurativo fundamental similar al del poema El cuervo de 1845, del estadounidense Edgar Allan Poe, pues remite a la cercana muerte de la amada del protagonista [Isaacs, 1967, pág. 23; Poe, 1840, pág. 321]. La presencia de las aves en la escritura colombiana, así como en múltiples pro...

  2. Aves y literatura. El vuelo de las aves por la literatura

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    Ricardo Andrés Manrique Granados

    2016-12-01

    Full Text Available La presencia de las aves en la literatura de Colombia puede rastrearse hasta sus inicios. Para todos es inmediata la imagen del ave negra de la María (1867, obra del vallecaucano Jorge Isaacs que cumple un papel figurativo fundamental similar al del poema El cuervo de 1845, del estadounidense Edgar Allan Poe, pues remite a la cercana muerte de la amada del protagonista [Isaacs, 1967, pág. 23; Poe, 1840, pág. 321]. La presencia de las aves en la escritura colombiana, así como en múltiples producciones literarias destacadas en los cánones occidentales, está provista de profundos simbolismos que trascienden funciones tan determinadas como la de la romántica ave negra. Retomando simbolismos que tienen sus bases en el islam y el cristianismo, las imágenes de las aves se vinculan esencialmente con el alma humana y con el tránsito que recorre entre la tierra y el cielo tras la muerte, lo cual les otorga a los pájaros funciones de mediadores entre los dos mundos: un papel que tiene múltiples gamas y matices de significación en diversas culturas [Roque, 2009, págs. 236-237]. En consecuencia, más que ahondar en los referentes modernos de una metáfora como la del ave negra de mal presagio, veremos gamas de significados que tienen los pájaros en la literatura colombiana, y las circulaciones regionales e históricas de estos referentes alados, en particular entre escritores del Eje Cafetero.

  3. Presencia y abundancia de aves que se reproducen en islas de la bahía de Mazatlán, Sinaloa, México

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    Alberto Piña-Ortiz

    2017-04-01

    Full Text Available Registramos la presencia y abundancia de aves, así como el hábitat y temporalidad de la reproducción de especies en las islas Pájaros, Venados, Lobos, Hermano Norte y Hermano Sur, ubicadas en la bahía de Mazatlán. Realizamos siete recorridos entre noviembre de 2014 y mayo de 2015; además contábamos con información colectada en mayo de 2004. Observamos un total de 59 especies de aves, de las cuales 15 fueron reproductoras: Dendrocygna autumnalis (pijije ala blanca, Phaethon aethereus (rabijunco pico rojo, Sula leucogaster (bobo café, Pelecanus occidentalis (pelícano café, Ardea herodias (garza morena, Ardea alba (garza blanca, Egretta thula (garza pie dorado, Bubulcus ibis (garza ganadera, Nycticorax nycticorax (pedrete corona negra, Nyctanassa violacea (pedrete corona clara, Eudocimus albus (ibis blanco, Coragyps atratus (zopilote común, Haematopus palliatus (ostrero americano, Larus heermanni (gaviota ploma y Falco peregrinus (halcón peregrino. Para P. aethereus y S. leucogaster no había reportes previos de reproducción en estas islas; además, confirmamos la anidación de L. hermanni. La isla Pájaros fue la que albergó el mayor número de especies reproductoras (10 especies. Pelecanus occidentalis fue la especie más abundante con un total de 1 559 individuos, seguido de Fregata magnificens (fragata magnífica y Sula nebouxii (bobo pata azul con 1 526 y 1 100 individuos, respectivamente; aunque para estas dos últimas especies no hubo registros de reproducción. Las islas se encuentran bajo protección, pero se requiere realizar monitoreos para establecer el estado y tendencias de las poblaciones de aves, así como los efectos de las perturbaciones por actividades humanas y por las especies introducidas.

  4. The phylogeny and life cycle of two species of Profilicollis (Acanthocephala: Polymorphidae) in marine hosts off the Pacific coast of Chile.

    Science.gov (United States)

    Rodríguez, S M; D'Elía, G; Valdivia, N

    2017-09-01

    Resolving complex life cycles of parasites is a major goal of parasitological research. The aim of this study was to analyse the life cycle of two species of the genus Profilicollis, the taxonomy of which is still unstable and life cycles unclear. We extracted individuals of Profilicollis from two species of crustaceans (intermediate hosts) and four species of seagulls (definitive hosts) from sandy-shore and estuarine habitats along the south-east Pacific coast of Chile. Mitochondrial DNA analyses showed that two species of Profilicollis infected intermediate hosts from segregated habitats: while P. altmani larvae infected exclusively molecrabs of the genus Emerita from fully marine habitats, P. antarcticus larvae infected the crab Hemigrapsus crenulatus from estuarine habitats. Moreover, P. altmani completed its life cycle in four seagulls, Chroicocephalus maculipennis, Leucopheus pipixcan, Larus modestus and L. dominicanus, while P. antarcticus, on the other hand, completed its life cycle in the kelp gull L. dominicanus. Accordingly, our results show that two congeneric parasites use different and spatially segregated species as intermediate hosts, and both are capable of infecting one species of definitive hosts. As such, our analyses allow us to shed light on a complex interaction network.

  5. Reproductive success of South American terns (Sterna hirundinacea from Cardos Islands, Florianópolis, SC, Brazil

    Directory of Open Access Journals (Sweden)

    Hélio A.A. Fracasso

    2012-06-01

    Full Text Available Sterna hirundinacea (Lesson, 1831 is a migratory seabird that breeds in the Pacific Coast (from Peru to Chile and along the Atlantic coast of South America from Espírito Santo (Brazil to Terra del Fuego (Argentina. This paper describes the reproductive success of South American Terns on Cardos Island, Florianopolis, Brazil in the breeding seasons of 2003, 2005 and 2006. The colony was formed in mid-May in 2003 and early April in other years, with the total number of nests ranging from 1,852 in 2006 to 2,486 in 2005. Hatching success was estimated at 76.39% in 2006, 62.73% in 2003 and 41.1% in 2005, the lowest value that could be attributed to predation by hawks Caracara plancus, lizards Tupinambis merianae and black vulture Coragyps atratus. The chicks hatched in July in 2003, and in June 2005 and 2006, and fledging success was 50.94%, 35.96 and 53.47% respectively. Cardos Island has been constantly used as a breeding site by South American Terns, and therefore represents an important area for conservation of this species. This success could be attributed to low pressure of Kelp gulls (Larus dominicanus, the main predator of seabirds along the Brazilian coast.Sterna hirundinacea (Lesson, 1831 é uma ave migratória que nidifica na costa do Pacífico (do Peru ao Chile e ao longo do Atlântico Sul do Espírito Santo (Brasil até a Terra do Fogo (Argentina. Este trabalho descreve o sucesso reprodutivo do trinta-réis do bico-vermelho na ilha dos Cardos, Florianópolis, Brasil, durante as temporadas reprodutivas de 2003, 2005 e 2006. A formação da colônia ocorreu em maio de 2003 e inicio de abril nos outros anos, com um total de ninhos variando entre 1.852 em 2006 a 2.486 em 2005. O sucesso de incubação foi estimado em 76,39% (2006, 62,73% (2003 e 41,1% em 2005, sendo que os menores valores puderam ser atribuídos a predação dos gaviões Caracara plancus, lagartos Tupinambis merianae e urubus Coragyps atratus. As primeiras eclosões foram

  6. Programa de conservacion para aves migratorias neotropicales

    Science.gov (United States)

    Deborah Finch; Marcia Wilson; Roberto Roca

    1992-01-01

    Mas de 250 especies de aves terrestres migran a Norte America durante la epoca reproductiva para aprovechar los sistemas templados. No obstante, las aves migratorias neotropicales pasan la mayor parte de su ciclo de vida en los habitat tropicales y subtropicales de paises latinoamericanos y caribefios donde viven en una asociacion cercana con las aves residentes. Para...

  7. AVE project

    International Nuclear Information System (INIS)

    2004-01-01

    During 1998, ANAV began to optimize Human Resources to cope with the ERE and ANA-ANV integration. Project AVE was intended to achieve an orderly transfer of know-how, skills, attitudes and experiences. The most complex part was renovation of personnel with Operating Licenses. Nearly 140 people had joined the organization by late December 2003. This opportunity was seized to draw up a new Training Manual, and a common Initial Training Plan was designed for the two plants, accounting for the singularities of each one. The plan is divided into 5 modules: Common Training, Specific Training, PEI/CAT, Management, and on-the-job Training. The training environments were defined according to the nature of the capabilities to be acquired. Project AVE resulted in the merger of the Asco and Vandellos II Training services. (Author)

  8. Masayo Ave õpetab puudutama / Lylian Meister

    Index Scriptorium Estoniae

    Meister, Lylian, 1966-

    2007-01-01

    Jaapani disainerist ja arhitektist Masayo Avest, tema mõtteid disainist, arvamus eestlastest. 2006. a. juhendas M. Ave Eesti Kunstiakadeemias workshop'i, kus osalesid tootedisaini ja tekstiilieriala üliõpilased. Talve tekstuuride väljendamiseks sündis "Haptic Dictionary" ja näitus Tallinnas Arhitektuuri- ja Disainigaleriis. 15 ill., neist 9 M. Ave töödest

  9. Aves municipales oficiales de Puerto Rico

    Science.gov (United States)

    Carlos M. Domínguez Cristóbal

    2009-01-01

    Las aves constituyen uno de los recursos de muy poco uso como símbolo oficial representativo de los municipios en Puerto Rico. Es muy probable que la decisión que màs pueda influenciar en esa selección esté relacionada con la movilidad de las aves ya que éstas no se limitan a una municipalidad en específico...

  10. Sexagem cirúrgica em aves silvestres

    Directory of Open Access Journals (Sweden)

    Raso T.F.

    2004-01-01

    Full Text Available Relata-se a utilização da laparoscopia na sexagem de 349 aves silvestres nacionais e exóticas, pertencentes a 61 espécies, de 11 famílias e seis ordens. Foram sexadas aves com idades entre quatro meses e 42 anos e peso corpóreo entre 55g e 3,4kg. Com essa técnica foi possível visualizar as gônadas, avaliar seu estágio de desenvolvimento e observar os órgãos adjacentes. A técnica cirúrgica utilizando endoscópio rígido para sexagem de aves silvestres foi considerada rápida e segura. Nenhum óbito foi verificado durante ou em conseqüência do procedimento cirúrgico.

  11. Contaminant levels in Herring (Larus argentatus) and Great Black-backed Gull (Larus marinus) eggs from colonies in the New York harbor complex between 2012 and 2013.

    Science.gov (United States)

    Burger, Joanna; Elbin, Susan

    2015-03-01

    Birds living in coastal areas are exposed to severe storms and tidal flooding during the nesting season, but also to contaminants that move up the food chain from the water column and sediment to their prey items. We examine metals in Herring Gull (Larus argentatus) and Great Black-backed Gull (Larus marinus) eggs collected from the New York/New Jersey harbor estuary in 2012 and in 2013 to determine if there were significant yearly differences in metal levels. We test the null hypothesis that there were no significant yearly differences in metal levels. We investigate whether there were consistent differences in metals from 2012 to 2013 that might suggest a storm-related effect because Superstorm Sandy landed in New Jersey in October 2012 with high winds and extensive flooding, and view this research as exploratory. Except for arsenic, there were significant inter-year variations in the mean levels for all colonies combined for Herring Gull, and for lead, mercury and selenium for Great Black-backed Gulls. All metal levels in 2013 were less than in 2012, except for lead. These differences were present for individual colonies as well. Metal levels varied significantly among islands for Herring Gulls in both years (except for cadmium in 2013). No one colony had the highest levels of all metals for Herring Gulls. A long term data set on mercury levels in Herring Gulls indicated that the differences between 2012 and 2013 were greater than usual. Several different factors could account for these differences, and these are discussed.

  12. Urease-positive thermophilic strains of Campylobacter isolated from seagulls (Larus spp.).

    Science.gov (United States)

    Kaneko, A; Matsuda, M; Miyajima, M; Moore, J E; Murphy, P G

    1999-07-01

    Three strains of urease-positive thermophilic Campylobacter (UPTC), designated A1, A2 and A3, were identified by biochemical characterization after isolation from faeces of seagulls in Northern Ireland in 1996. The biochemical characteristics of the strains were identical to those of strains described previously. Analysis by pulsed-field gel electrophoresis (PFGE) after separate digestion with ApaI and SmaI demonstrated that the respective PFGE profiles were indistinguishable. The PFGE analysis also suggested that the genomes were approximately 1810 kb in length. This is the first example of the isolation of UPTC from flying homoiothermal animals, i.e. from seagulls (Larus spp.).

  13. Afecções cirúrgicas em aves: estudo retrospectivo

    OpenAIRE

    Patricia Ferreira de Castro

    2010-01-01

    As aves representam a grande maioria das espécies da fauna silvestre mantidas como animais de companhia em nosso meio e respondem diretamente pela crescente demanda pelo atendimento médico veterinário. O avanço na área da anestesiologia viabilizou a realização de procedimentos cirúrgicos mais longos e complexos e contribuiu para o desenvolvimento e aprimoramento da técnica operatória em aves, contudo, dados nacionais de casuística relacionados às afecções cirúrgicas de aves ainda são inexiste...

  14. Nocturnal feeding under artificial light conditions by Brown-hooded Gull (Larus maculipennis) in Puerto Madryn harbour (Chubut Province, Argentina)

    NARCIS (Netherlands)

    Leopold, M.F.; Philippart, C.J.M.; Yorio, P.

    2010-01-01

    This paper describes nocturnal, marine feeding behaviour in the Brown-hooded Gull (Larus maculipennis) in November 2009. The gulls assembled at night at the end of a long pier, running 800 m offshore into the Golfo Nuevo, at Puerto Madryn, Chubut Province, Argentina. Powerful lights predictably

  15. Plantas usadas por aves en paisajes cafeteros de Nariño, Colombia

    Directory of Open Access Journals (Sweden)

    Yulieth Viviana Castillo R.

    2017-12-01

    Full Text Available Las plantas son un importante recurso alimenticio para las aves presentes en los paisajes cafeteros, por lo que la heterogeneidad en las diferentes unidades de estos paisajes, garantizan la disponibilidad de alimento. Conocer este tipo de interacciones entre plantas y aves es importante para la conservación de la biodiversidad en paisajes cafeteros. En esta investigación, se presenta la lista inicial de especies de plantas usadas por las aves de paisajes cafeteros en zonas rurales de los municipios de Colón-Génova, La Unión, Arboleda y San Pedro de Cartago en el departamento de Nariño, Colombia. Las observaciones en campo y colectas generales de plantas muestran que 25 especies vegetales son consumidas por aves frugívoras, ocho especies son aprovechadas por aves nectarívoras y nueve especies son aprovechadas por aves insectívoras. Los resultados obtenidos permiten proponer un listado de especies de plantas potenciales como fuente de recursos para las aves, algunas nativas y otras introducidas, que pueden ser útiles para el manejo de paisajes cafeteros en la región a través de la implementación de estrategias de producción y propagación para la restauración.

  16. Tere tulemast allveelaevale / Ave Alavainu

    Index Scriptorium Estoniae

    Alavainu, Ave, 1942-

    2005-01-01

    22. nov. toimub Kärdla kultuurikeskuses Nikolai Tihhonovi "Balladi naeltest" lahtine proov. Loo on tõlkinud ja lavastanud Ave Alavainu. Lavastust mängitakse ka Jõgeval toimuvatel Betti Alveri XIII luulepäevadel "Tähetund"

  17. Algunas de las aves emblemáticas del Eje Cafetero

    Directory of Open Access Journals (Sweden)

    Daniel Uribe Restrepo

    2016-12-01

    La región del Eje Cafetero no es una excepción, por el contrario, su variedad de climas, paisajes y ecosistemas albergan un gran número de especies de aves. Es difícil estimar la cantidad exacta de especies de aves en esta región, pero dicho número con seguridad supera las seiscientas cincuenta especies. Las aves conquistaron con éxito la geografía montañosa de las cordilleras Central y Occidental, y los humedales del valle interandino del río Cauca, irradiando sus múltiples formas, tamaños, colores, cantos y adaptaciones hasta conformar un caleidoscopio de indescriptible belleza.

  18. Genetic variability in mitochondrial and nuclear genes of Larus dominicanus (Charadriiformes, Laridae from the Brazilian coast

    Directory of Open Access Journals (Sweden)

    Gisele Pires de Mendonça Dantas

    2012-01-01

    Full Text Available Several phylogeographic studies of seabirds have documented low genetic diversity that has been attributed to bottleneck events or individual capacity for dispersal. Few studies have been done in seabirds on the Brazilian coast and all have shown low genetic differentiation on a wide geographic scale. The Kelp Gull is a common species with a wide distribution in the Southern Hemisphere. In this study, we used mitochondrial and nuclear markers to examine the genetic variability of Kelp Gull populations on the Brazilian coast and compared this variability with that of sub-Antarctic island populations of this species. Kelp Gulls showed extremely low genetic variability for mitochondrial markers (cytb and ATPase and high diversity for a nuclear locus (intron 7 of the β-fibrinogen. The intraspecific evolutionary history of Kelp Gulls showed that the variability found in intron 7 of the β-fibrinogen gene was compatible with the variability expected under neutral evolution but suggested an increase in population size during the last 10,000 years. However, none of the markers revealed evidence of a bottleneck population. These findings indicate that the recent origin of Kelp Gulls is the main explanation for their nuclear diversity, although selective pressure on the mtDNA of this species cannot be discarded.

  19. Plantas usadas por aves en paisajes cafeteros de Nariño, Colombia

    OpenAIRE

    Yulieth Viviana Castillo R.; Jhon Jairo Calderón L.

    2017-01-01

    Las plantas son un importante recurso alimenticio para las aves presentes en los paisajes cafeteros, por lo que la heterogeneidad en las diferentes unidades de estos paisajes, garantizan la disponibilidad de alimento. Conocer este tipo de interacciones entre plantas y aves es importante para la conservación de la biodiversidad en paisajes cafeteros. En esta investigación, se presenta la lista inicial de especies de plantas usadas por las aves de paisajes cafeteros en zonas rurales de los muni...

  20. Anthropogenic debris in the nests of kelp gulls in South Africa.

    Science.gov (United States)

    Witteveen, Minke; Brown, Mark; Ryan, Peter G

    2017-01-30

    Anthropogenic debris results in detrimental interactions with many marine species. Several seabirds include debris items in their nests, which can lead to entanglement of chicks and adults, resulting in injury or death. Anthropogenic debris was found in 4-67% of kelp gull Larus dominicanus nests in seven colonies in the Western Cape, South Africa. Nests contained two types of litter: items included in the nest structure during construction (mainly ropes and straps), and regurgitated items (mainly bags and food wrappers) that probably accumulate primarily during the chick-rearing period. Debris used in nest construction was more likely to injure gulls, and was found mainly at coastal sites where there was little natural vegetation for construction. Distance to the nearest urban waste landfill significantly affected the occurrence of debris items in nests, especially dietary-derived items. The amount of debris in kelp gull nests highlights the need for improved debris management in South Africa. Copyright © 2016 Elsevier Ltd. All rights reserved.

  1. Plastic consumption and diet of Glaucous-winged Gulls (Larus glaucescens).

    Science.gov (United States)

    Lindborg, Valerie A; Ledbetter, Julia F; Walat, Jean M; Moffett, Cinamon

    2012-11-01

    We analyzed dietary habits and presence of plastic in 589 boluses of Glaucous-winged Gulls (Larus glaucescens) as one of two studies on the impact of plastics on marine life in the US Salish Sea. Volunteers dissected boluses collected (2007-2010) from Protection Island, Washington. Components were separated into 23 food and non-food categories. Plastic was found in 12.2% of boluses, with plastic film being the most common plastic form. No diet specialization was observed. Vegetation was the most abundant component, found in 91.3% of boluses. No relationship was observed between any dietary items and occurrence or type of plastic found. Load and potential ecological impact in the marine environment can be expected to increase concurrently with increasing plastic use and number and variety of plastic sources. Future studies are necessary to understand the impacts of plastic ingestion on this species. Copyright © 2012 Elsevier Ltd. All rights reserved.

  2. Impactos del AVE en el turismo de Bocairent

    OpenAIRE

    Francés Gimeno, Andreu

    2016-01-01

    En el presente trabajo se va a realizar un análisis de los impactos que ha generado la llegada del AVE en la localidad de Bocairent. Población sin estación pero que supuestamente se encuentra dentro del área de influencia y forma parte de una asociación con fines turísticos que se llama AVE Villena y Levante Interior. Para ello se han analizado tanto las condiciones de la localidad, como la de la estación receptiva de turistas, además, de las organizaciones encargadas para atraer a este tipo ...

  3. ENFERMEDAD DE NEWCASTLE EN AVES DE TRASPATIO DEL EJE CAFETERO COLOMBIANO

    Directory of Open Access Journals (Sweden)

    Marlyn Romero P

    2009-08-01

    Full Text Available Objetivo. Evaluar la circulación del virus de la enfermedad de Newcastle (ENC en aves de traspatio de siete municipios del eje cafetero por medio de la técnica ELISA. Materiales y métodos. Fueron encuestados 465 predios para evaluar las normas de bioseguridad de las aves de traspatio de los municipios de Armenia, Circasia, Quimbaya, Montenegro, Filandia, Calarcá y La Tebaida del Departamento del Quindío. Se analizaron 662 muestras de suero para detectar anticuerpos IgG contra el virus de la ENC por ELISA. Resultados. La seroprevalencia de la ENC en la población de aves evaluada fue del 30.7%.(203/662, que corresponde al 38.5% de los predios encuestados. No se encontró asociación entre la especie y la seroreactividad (p=0.21, ni entre la distribución de los anticuerpos por grupos productivos y la edad (p>0.05. Los predios de traspatio son manejados de forma extensiva, albergan en las mismas instalaciones aves de diferentes especies y edades en el 64.3% (299/465, con edades en intervalos entre tres meses y cinco años. Fueron detectadas malas prácticas de manejo de la gallinaza y la mortalidad, sin encontrar asociación estadísticamente significativa entre las variables evaluadas y la presencia de anticuerpos anti-virus de ENC (p>0.05. Conclusiones. Es necesario el establecimiento de planes adecuados de vacunación de las aves de traspatio, la vigilancia epidemiológica activa, la observación de los casos sospechosos, sin dejar de lado la educación y capacitación, sobre el adecuado manejo de los animales, dirigida a los propietarios de las aves como medidas de control de la enfermedad.

  4. ASOCIACIONES ENTRE AVES MARINAS Y SOTALIA GUIANENSIS EN EL SUR DEL GOLFO DE VENEZUELA

    Directory of Open Access Journals (Sweden)

    NÍNIVE ESPINOZA-RODRÍGUEZ

    2015-01-01

    Full Text Available Las asociaciones entre aves marinas y mamíferos marinos es un evento común en todos los mares y océanos del mundo. Muchos autores han denominado estas asociaciones como relaciones comensalistas, oportunistas o parasitarias, según el efecto que dicha interacción resulte sobre una o ambas especies relacionadas. Con la finalidad de describir la existencia de agrupaciones entre Sotalia guianensis y aves marinas en la porción sur del Golfo de Venezuela, desde junio 2011 a junio 2012 se realizaron observaciones en plataformas móviles de grupos de este cetáceo y aves marinas, utilizando el protocolo "group-follow" bajo la metodología de "Ad libitum sampling". Todos los avistamientos fueron georreferenciados, realizándose anotaciones de la ocurrencia o no-asociación con aves marinas, de igual forma, se registró la especie y el número de aves presentes al momento de la interacción. Se realizaron 721 avistamientos, de los cuales en 197 eventos se registró asociación entre aves marinas y Sotalia guianensis. Las especies de aves marinas residentes que presentaron mayor frecuencia en eventos de asociación con S. guianensis fueron: Fregata magnificens (49%; n=98, Phalacrocorax brasilianus (29,5%; n=59 y Pelecanus occidentalis (22,5%; n=45; siendo Thalasseus maxima (71%; n=142 la única especie migratoria. Durante las observaciones realizadas en el período de muestreo se notó la presencia de una especie de golondrina (Riparia riparia en un solo evento de agrupación con Sotalia guianensis. Dichas asociaciones aves-delfines, sólo fueron observadas cuando notables congregaciones de peces fueron registrados, donde el o los grupos de delfines realizaban alguna actividad con grandes movimientos de agua, lo que pudiese permitir a las aves realizar un menor gasto energético en la ubicación y la captura de la presa.

  5. Aves acuáticas de la laguna de Acuitlapilco, Tlaxcala, México

    Directory of Open Access Journals (Sweden)

    Juanita Fonseca

    2012-07-01

    Full Text Available Estudiamos la abundancia y distribución estacional de las aves acuáticas en la laguna de Acuitlapilco, Tlaxcala, México. De febrero de 2011 a enero de 2012, realizamos censos en puntos de conteo para el registro de las especies. Registramos un total de 36 especies de aves acuáticas con una abundancia total acumulada de 48,794 individuos. Doce de las especies registradas fueron residentes, 10 migratorias y 14 fueron especies transitorias o de registro accidental. Observamos que la mayor riqueza de especies y abundancia de aves fueron en invierno, cuando la mayoría de las especies migratorias llegaron a la laguna. Nuestros resultados muestran que esta área es importante para especies de aves acuáticas tanto residentes como migratorias, y refleja la necesidad de un mayor número de estudios sobre el papel de las lagunas continentales como reservorios de biodiversidad.

  6. Building a SuAVE browse interface to R2R's Linked Data

    Science.gov (United States)

    Clark, D.; Stocks, K. I.; Arko, R. A.; Zaslavsky, I.; Whitenack, T.

    2017-12-01

    The Rolling Deck to Repository program (R2R) is creating and evaluating a new browse portal based on the SuAVE platform and the R2R linked data graph. R2R manages the underway sensor data collected by the fleet of US academic research vessels, and provides a discovery and access point to those data at its website, www.rvdata.us. R2R has a database-driven search interface, but seeks a more capable and extensible browse interface that could be built off of the substantial R2R linked data resources. R2R's Linked Data graph organizes its data holdings around key concepts (e.g. cruise, vessel, device type, operator, award, organization, publication), anchored by persistent identifiers where feasible. The "Survey Analysis via Visual Exploration" or SuAVE platform (suave.sdsc.edu) is a system for online publication, sharing, and analysis of images and metadata. It has been implemented as an interface to diverse data collections, but has not been driven off of linked data in the past. SuAVE supports several features of interest to R2R, including faceted searching, collaborative annotations, efficient subsetting, Google maps-like navigation over an image gallery, and several types of data analysis. Our initial SuAVE-based implementation was through a CSV export from the R2R PostGIS-enabled PostgreSQL database. This served to demonstrate the utility of SuAVE but was static and required reloading as R2R data holdings grew. We are now working to implement a SPARQL-based ("RDF Query Language") service that directly leverages the R2R Linked Data graph and offers the ability to subset and/or customize output.We will show examples of SuAVE faceted searches on R2R linked data concepts, and discuss our experience to date with this work in progress.

  7. Sexual dimorphism in Ramphastos toco and Ramphastos dicolorus (Piciformes, Aves

    Directory of Open Access Journals (Sweden)

    Márcio S. Castro

    2003-03-01

    Full Text Available Con frecuencia, en la familia Ramphastidae no hay un dimorfismo sexual aparente, excepto en Pteroglossus viridis y en el género Selenidera. Muchos criadores de aves silvestres creen que los especímenes de Ramphastos toco pueden ser sexados usando las caracteríticas del pico. En este estudio, fueron analizadas algunas variables feno-típicas discriminantes en aves cuyo sexo fue previamente determinado con metodos citogenéticos. Un total de 51 especimenes de R. toco y 20 de R. dicolorus fueron estudiados. Los parámetros estadísticos significativos que son útiles para distinguir el sexo en estas especies son la longitud del culmen y del tomium, la longitud del pico corneo inferior y de la cloaca. Usando estos parámetros, los criadores de aves cautivas pueden sexar los especimenes de Ramphastos toco mediante análisis fenotípico y formar parejas reproductoras más rapidamente.

  8. O Comportamento das Aves Poultry Behavior

    Directory of Open Access Journals (Sweden)

    EJ Campos

    2000-08-01

    Full Text Available Os estudos sobre o comportamento das aves, principalmente as galinhas, datam de 1912, quando o gênero Gallus passou a ser estudado com mais intensidade na área da Genética. Tais estudos eram simplesmente filosóficos até o início da década de 80, quando uma nova era da produção industrial avícola surgiu, objetivando um maior volume de produção econômica em todas as áreas de exploração. Esse objetivo reativou de maneira científica os estudos de comportamento das aves face à tecnologia de produção empregada nos sistemas de exploração, tornando-os mais acentuados já na década de 90, culminando com um simpósio internacional realizado nos Estados Unidos onde foram traçados os objetivos ou linhas de pesquisas na exploração avícola. O intuito era evitar problemas com os movimentos ambientalistas, traçando novos rumos para uma produção eficiente sem interferir no comportamento das aves já no início do novo milênio. Esta revisão, tem como objetivo principal uma análise científica e filosófica sobre o comportamento das aves em diversos métodos de exploração.Studies on poultry behavior initiated in 1972, at that time, fowls from Gallus domesticus species were the most important animal for the initial studies of Genetic. Since then, just the philosophical concepts where involved in those studies. However, at the beginning of 80 decade, these studies were intensified taking into account technological approaches for an economical industrial poultry production. Meanwhile, the reactions from activists involved in the behavior of the animal subjected to production became more strong at the beginning of 90's as well as those studies on chicken behavior. Finally, in 1998, an international symposium, promoted by chicken behavior scientists were held in the United States, in order to establish new methods of exploitation of poultry without interfering in its normal behavior, at the beginning of new millenium. The main

  9. Atlas de aves: Un metodo para documentar distribucion y seguir poblaciones

    Science.gov (United States)

    Robbins, C.S.; Dowell, B.A.; Dawson, D.K.; Alvarez-Lopez, Humberto; Kattan, Gustavo; Murcia, Carolina

    1988-01-01

    Los Atlas de Aves son proyectos nacionales o regionalies para trazar en mapas la distribucion en reproduccion de cada especie de ave. Ese procedimiento se esta usando en Europa, Australia, Nueva Zelanda, Norteamerica, y partes de Africa. El tama?o de los cuadrados varia de medio grado de latitud y Iongitud hasta 5 x 5 km. El trabajo de campo de cada proyecto exige aproxlmadamente cinco a?os, pero los aficionados pueden llevar a cabo la mayor parte del trabajo. Es posible almacenar los resultados en un computador personal. Hay muchos beneficios: (I) se presenta la distribucion corriente de las aves de la nacion, del estado, o de la Iocalidad; (2) se desarrolla nueva informacion especialmente sobre especies raras o en peligro; (3) se descubren areas que tienen una avlfauna sobresaliente o habitats raros y ayuda a su proteccion, (4) se documentan cambios de dlstribucion; (5) se pueden usar para documentar cambios de poblacion, especialmente en los tropicos donde otros metodos son mas dificiles de usar porque hay muchas especies y no hay muchos observadores calificados en la identificacion de sonidos de las aves; (6) son proyectos buenos de investigacion para estudiantes graduados; (7) los turistas y los jefes de excursiones de historia natural pueden contribuir con muchas informaciones

  10. Ritmos circadianos en el metabolismo del calcio en aves de postura.

    OpenAIRE

    Correa Cardona Héctor Jairo

    1999-01-01

    Se revisó literatura relacionada con las variaciones circadianas en el metabolismo del calcio en aves de postura y se concluye que la información analizada y discutida suministra evidencia suficiente que demuestra la existencia de ritmos circadianos en diferentes procesos relacionados con el metabolismo y la alimentación del calcio en las aves de postura. Esto demuestra la necesidad de ajustar el momento y la cantidad de calcio a suministrar...

  11. Seabird eggs as bioindicators of chemical contamination in Chile

    Energy Technology Data Exchange (ETDEWEB)

    Cifuentes, Jacqueline Munoz; Becker, Peter H.; Sommer, Ute; Pacheco, Patricia; Schlatter, Roberto

    2003-11-01

    Seabird eggs are proposed as biomonitors of chemical contamination in Chile. - Seabird eggs were used as bioindicators of chemical contamination in Chile. Brown-hooded Gull (Larus maculipennis), Kelp Gull (Larus dominicanus), Trudeau's Tern (Sterna trudeaui), Neotropic Cormorant (Phalacrocorax brasilianus), and Pink-footed Shearwater (Puffinus creatopus) eggs were sampled at different breeding sites during the 1990s. Mercury and organochlorines (PCBs, DDT, HCB, HCH, and PCP) were quantified to reveal the interspecific differences, spatial and temporal trends in contamination levels. Trudeau's Tern displayed the highest levels of mercury (486 ng g{sup -1} wet weight). The highest {sigma}DDT concentrations were measured in Brown-hooded Gulls (726 ng g{sup -1}). PCB levels were similar among the species (102-236 ng g{sup -1}), but the composition of the PCB mixture was different in Pink-footed Shearwaters. With the exception of the Brown-hooded Gull, all species studied presented similar and low levels of organochlorines ({sigma}OHa). Residues of PCB and related compounds were not detected in any of the seabird eggs analyzed in Chile. Geographical variation was low, although levels of industrial chemicals were slightly higher in eggs from Concepcion Bay, and agricultural chemicals in eggs from Valdivia. Also interannual variation was low, but some evidence was found of decreasing levels in gull eggs throughout the time of the study. The causes of the low levels and small variability in space and time of environmental chemicals in Chilean seabirds are discussed. We propose the use of seabirds in future monitoring of the development of chemical contamination in Chile.

  12. Seabird eggs as bioindicators of chemical contamination in Chile

    International Nuclear Information System (INIS)

    Cifuentes, Jacqueline Munoz; Becker, Peter H.; Sommer, Ute; Pacheco, Patricia; Schlatter, Roberto

    2003-01-01

    Seabird eggs are proposed as biomonitors of chemical contamination in Chile. - Seabird eggs were used as bioindicators of chemical contamination in Chile. Brown-hooded Gull (Larus maculipennis), Kelp Gull (Larus dominicanus), Trudeau's Tern (Sterna trudeaui), Neotropic Cormorant (Phalacrocorax brasilianus), and Pink-footed Shearwater (Puffinus creatopus) eggs were sampled at different breeding sites during the 1990s. Mercury and organochlorines (PCBs, DDT, HCB, HCH, and PCP) were quantified to reveal the interspecific differences, spatial and temporal trends in contamination levels. Trudeau's Tern displayed the highest levels of mercury (486 ng g -1 wet weight). The highest ΣDDT concentrations were measured in Brown-hooded Gulls (726 ng g -1 ). PCB levels were similar among the species (102-236 ng g -1 ), but the composition of the PCB mixture was different in Pink-footed Shearwaters. With the exception of the Brown-hooded Gull, all species studied presented similar and low levels of organochlorines (ΣOHa). Residues of PCB and related compounds were not detected in any of the seabird eggs analyzed in Chile. Geographical variation was low, although levels of industrial chemicals were slightly higher in eggs from Concepcion Bay, and agricultural chemicals in eggs from Valdivia. Also interannual variation was low, but some evidence was found of decreasing levels in gull eggs throughout the time of the study. The causes of the low levels and small variability in space and time of environmental chemicals in Chilean seabirds are discussed. We propose the use of seabirds in future monitoring of the development of chemical contamination in Chile

  13. DETERMINACIÓN DE SEXO EN AVES MEDIANTE HERRAMIENTAS MOLECULARES

    Directory of Open Access Journals (Sweden)

    NUBIA E. MATTA CAMACHO

    2009-01-01

    Full Text Available RESUMEN La ausencia de dimorfismo sexual en los estadios juveniles y durante la edad adulta de gran cantidad de especies de aves, dificulta o imposibilita la determinación del sexo basados en el fenotipo. El empleo de marcadores moleculares para determinar el sexo de las aves es una herramienta útil debido a la exactitud y rapidez de los resultados y a su vez se constituye en un método que minimiza el estrés durante la toma de muestra, comparado con otras técnicas invasivas que pudieran afectar la salud o estabilidad biológica del animal. La determinación temprana del sexo en aves resulta de especial relevancia cuando se consideran programas de conservación ex situ, producción, explotación y estudios de ecología de poblaciones. Esta revisión presenta las metodologías usadas para determinar el sexo, haciendo especial énfasis en herramientas moleculares, presentando sus ventajas y limitaciones. Palabras clave: dimorfismo sexual, aves, CHD, tipificación molecular cromosoma W, cromosoma Z. ABSTRACT The lack of sexual dimorphism in nestling, juvenile or adult birds of large number of avian species, makes it difficult or impossible sex determination based on phenotipic characteristics. To use molecular markers for bird sex determination is a rapid and safe procedure; moreover this methodology minimizes the stress during sampling, compared to other invasive techniques that could affect the health or biological stability of the animal. The early sex determination in birds is of particular importance when considering ex situ conservation programs, production, exploitation or population ecology studies. This review presents the methodologies used to sex determination, making emphasize on molecular tools, showing its advantages and limitations. Keywords: sexual dimorphism, birds, CHD, molecular typing, W chromosome, Z chromosome

  14. Ácaros plumícolas (Acari: Astigmata) em aves do Cerrado do Distrito Federal, Brasil

    OpenAIRE

    Kanegae,Mieko Ferreira; Valim,Michel; Fonseca,Marcelo Andrade da; Marini,Miguel Ângelo; Freire,Nicolau Maués Serra

    2008-01-01

    O objetivo do estudo foi identificar os ácaros plumícolas em aves do cerrado. O mesmo foi realizado na Fazenda Água Limpa (FAL), Distrito Federal, Brasil, entre janeiro e agosto de 2002. As aves foram capturadas com rede de neblina e anilhadas. Foram amostradas 696 aves pertencentes a 83 espécies e 25 famílias de Passeriformes e não-Passeriformes. Foram encontrados ácaros plumícolas pertencentes a cinco famílias: Analgidae, Trouessartiidae, Proctophyllodidae, Avenzoariidae e Psoroptoididae. O...

  15. Rahvusvahelise kogemusega personalijuht Ave Kareda: Personalijuhi koostöö juhiga peaks rajanema aususel ja usaldusel / Ave Kareda ; interv. Tiina Saar

    Index Scriptorium Estoniae

    Kareda, Ave

    2009-01-01

    Logistikaettevõtte DHL Baltikumi personalijuht Ave Kareda vastab küsimustele, mis puudutavad ettevõtete personalipoliitikat, personalijuhi rolli, personaliosakonna võimalusi juhi ja inimeste vahel, rahvusvahelisuse osatähtsust personalitöös, mentorlust ning juhi ebaeetilisi otsuseid raskes olukorras

  16. Identificación de parásitos gastrointestinales en aves silvestres en cautiverio

    OpenAIRE

    García Corredor, Diego José; Sánchez Parada, Oscar Javier; Pulido Medellín, Martin Orlando; Andrade Becerra, Roy José

    2013-01-01

    Este trabajo identifica los parásitos gastrointestinales que presentaron las aves silvestres en cautiverio, en el municipio de Tibasosa (Boyacá, Colombia). Se tomaron 100 muestras de materia fecal de aves silvestres correspondientes a 11 familias (Psittacidae, Ramphastidae, Ophistocomidae, Cracidae, Anatidae, Icteridae, Alaudidae, Burhinidae, Phoenicopteridae, Anhimidae y Rallidae) y 16 especies (Ara ararauna, Ara macao, Amazona spp, Amazona ochrocephala, Ramphastos toco,...

  17. Aves ocasionales en la Sabana de Bogotá

    Directory of Open Access Journals (Sweden)

    Borrero José Ignacio

    1946-08-01

    Full Text Available La altiplanicie andina conocida con el nombre de Sabana de Bogotá, situada en la llamada "tierra fría" de los Andes Orientales de Colombia, a 2600 metros sobre el nivel del mar y con temperatura media de 13o C., esta bordeada en todo su derredor por montañas cuya altura en ningún sitio se eleva a menos de 2700 metros y esto solamente en el lado occidental, hacia el valle del Magdalena. Sin embargo, es visitada con alguna frecuencia por aves propias de pisos climáticos más cálidos y aun del llamado "Tropical" o "tierra caliente". Por lo que se ha podido averiguar, las aves visitantes observadas hasta ahora proceden de las vertientes occidentales y del valle del Magdalena; ninguna, con la única posible excepción de Elanoides forticatus yetapa, viene de las faldas orientales que descienden hasta los llanos del Meta pues hacia este lado de la Sabana se hallan las montañas más altas, cuya mayor depresión -la de Chipaque- es de 3150 metros en el sitio por donde pasa la carretera de Bogotá a Villavicencio. Parece por lo tanto que este ramal de la cordillera constituye una barrera infranqueable para las aves que habitan en el oriente de Cundinamarca, mientras que el ramal occidental, de menor altura, no lo es para las que habitan en las vertientes que conducen al Magdalena.

  18. Abundance and breeding distribution of seabirds in the northern part of the Danco Coast, Antarctic Peninsula

    Directory of Open Access Journals (Sweden)

    Mariana A. Juáres

    2013-02-01

    Full Text Available Seabird abundances and breeding distribution have the potential to serve as ecological indicators. The western Antarctic Peninsula is one of the three sites in the world with the greatest increases in local temperature during the last 50 years. The aim of this study was to monitor the distribution and abundance of breeding populations of seabirds in the northern sector of the Danco Coast, north-west of the Antarctic Peninsula, during the breeding season 2010/11. The birds were the Wilson′s storm petrel (Oceanites oceanicus, South Polar skua (Stercorarius maccormicki, kelp gull (Larus dominicanus, Antarctic tern (Sterna vittata, snowy sheathbill (Chionis alba, chinstrap penguin (Pygoscelis antarctica, southern giant petrel (Macronectes giganteus, gentoo penguin (Pygoscelis papua, Cape petrel (Daption capense and Antarctic shag (Phalacrocorax bransfieldensis. Annual breeding population growth increased in pygoscelids, southern giant petrel and sheathbill, and for the remaining species, breeding population trends were stable. Given that seabird populations can provide valuable information on the conditions of their feeding and nesting environments, this study highlights the need to maintain basics monitoring studies.

  19. Fish waste as an alternative resource for gulls along the Patagonian coast: availability, use, and potential consequences

    Energy Technology Data Exchange (ETDEWEB)

    Yorio, Pablo; Caille, Guillermo

    2004-04-01

    We evaluated the volumes of waste from fish processing plants in Chubut Province, Argentina, and discuss its potential consequences for Kelp Gull (Larus dominicanus) population dynamics and coastal management. Mean volume of waste produced between 1989 and 2001 in three coastal cities was 49.8 {+-} 10.9 thousand tons y{sup -1}. The amount of waste varied between years and cities, being larger at Puerto Madryn and Comodoro Rivadavia than at Rawson (24.1, 19.3 and 6.4 thousand tons y{sup -1}, respectively). Waste was disposed at the three cities during all months of the sampled years. Large numbers of Kelp Gulls have been recorded taking advantage of fish waste disposed at these waste sites throughout the year. Considering its energetic content, waste generated at processing plants may support a population of between 101 000 and 209 000 Kelp Gulls. Fish waste could be contributing to their population expansion through increased survival and breeding success. Conflicts due to the use of waste and derived effects on other coastal species and human populations could be minimized by adequate fish waste management.

  20. Avian Influenza Virus Isolated in Wild Waterfowl in Argentina: Evidence of a potentially unique phylogenetic lineage in South America

    Science.gov (United States)

    Pereda, Ariel J.; Uhart, Marcela; Perez, Alberto A.; Zaccagnini, Maria E.; La Sala, Luciano; Decarre, Julieta; Goijman, Andrea; Solari, Laura; Suarez, Romina; Craig, Maria I.; Vagnozzi, Ariel; Rimondi, Agustina; König, Guido; Terrera, Maria V.; Kaloghlian, Analia; Song, Haichen; Sorrell, Erin M.; Perez, Daniel R.

    2008-01-01

    Avian Influenza (AI) viruses have been sporadically isolated in South America. The most recent reports are from an outbreak in commercial poultry in Chile in 2002 and its putative ancestor from a wild bird in Bolivia in 2001. Extensive surveillance in wild birds was carried out in Argentina during 2006-2007. Using RRT-PCR, 12 AI positive detections were made from cloacal swabs. One of those positive samples yielded an AI virus isolated from a wild kelp gull (Larus dominicanus) captured in the South Atlantic coastline of Argentina. Further characterization by nucleotide sequencing reveals that it belongs to the H13N9 subtype. Phylogenetic analysis of the 8 viral genes suggests that the 6 internal genes are related to the isolates from Chile and Bolivia. The analysis also indicates that a cluster of phylogenetically related AI viruses from South America may have evolved independently, with minimal gene exchange, from influenza viruses in other latitudes. The data produced from our investigations are valuable contributions to the study of AI viruses in South America. PMID:18632129

  1. Fish waste as an alternative resource for gulls along the Patagonian coast: availability, use, and potential consequences

    International Nuclear Information System (INIS)

    Yorio, Pablo; Caille, Guillermo

    2004-01-01

    We evaluated the volumes of waste from fish processing plants in Chubut Province, Argentina, and discuss its potential consequences for Kelp Gull (Larus dominicanus) population dynamics and coastal management. Mean volume of waste produced between 1989 and 2001 in three coastal cities was 49.8 ± 10.9 thousand tons y -1 . The amount of waste varied between years and cities, being larger at Puerto Madryn and Comodoro Rivadavia than at Rawson (24.1, 19.3 and 6.4 thousand tons y -1 , respectively). Waste was disposed at the three cities during all months of the sampled years. Large numbers of Kelp Gulls have been recorded taking advantage of fish waste disposed at these waste sites throughout the year. Considering its energetic content, waste generated at processing plants may support a population of between 101 000 and 209 000 Kelp Gulls. Fish waste could be contributing to their population expansion through increased survival and breeding success. Conflicts due to the use of waste and derived effects on other coastal species and human populations could be minimized by adequate fish waste management

  2. Plastic ingestion by a generalist seabird on the coast of Uruguay.

    Science.gov (United States)

    Lenzi, Javier; Burgues, María Fernanda; Carrizo, Daniel; Machín, Emanuel; Teixeira-de Mello, Franco

    2016-06-15

    We analyzed plastic ingestion by Kelp Gull (Larus dominicanus) from 806 pellets collected between 2011 and 2013. Employing a Raman spectroscopy, we characterized those polymers used to produce the plastics ingested. Debris was recorded in 143 pellets (%FO=17.7%, n=202, 92.58g). Plastic was found in 119 pellets (%FO=83%) and non-plastic occurred in 56 pellets (%FO=39%). The most important debris category was plastic film with 55.3% (n=79). Plastic bags were observed in 19 pellets (%FO=2.4%, weight=25.02g). Glass was the second most important component (%FO=18.9%) followed by plastic fragments (%FO=17.8%). Plastic debris represented the 65.3% of the debris fragments (n=132, weight=58.84g), and was composed by polyethylene (52%), polypropylene (26%), polyamide (12%), polystyrene (6%), polyvinyl chloride (2%), and polyethylene terephthalate (2%). How plastics were obtained by gulls and the effects on individuals are discussed, as well as environmental considerations about plastic pollution on coastal environments. Copyright © 2016 Elsevier Ltd. All rights reserved.

  3. Anticuerpos séricos contra la enfermedad de Newcastle e Influenza Aviar en aves rapaces de Chile.

    Directory of Open Access Journals (Sweden)

    Daniel González-Acuña

    2012-12-01

    Full Text Available Objetivo. Detectar la presencia de anticuerpos séricos sanguíneos contra los virus de la Enfermedad de Newcastle (ENC e Influenza aviar (IA, para comprender la contribución de las aves silvestres en la transmisión de estos virus en Chile. Materiales y métodos. Se analizaron 63 aves pertenecientes a los órdenes Falconiformes y Strigiformes desde centros de rehabilitación de aves de las zonas central y sur de Chile. Se realizaron las pruebas de inhibición de la hemoaglutinación (IHA para detectar anticuerpos contra el virus ENC e inmunodifusión en gel agar (IDGA y ELISA para IA. Resultados. Se detectaron 14 aves positivas (22.2% para anticuerpos séricos contra el virus de la ENC. En cambio, no se registraron anticuerpos séricos sanguíneos para el virus de la IA. Conclusiones. La presencia de aves rapaces positivas en los centros de rescate a los anticuerpos séricos contra el virus de la ENC puede ser explicada por el consumo de carne de pollos que han sido vacunados contra ENC o consumo de aves que han adquirido directamente el virus vacunal a través de los distintos procedimientos de administración (aerosoles, bebederos de la vacuna o por el ingreso a los centros de rescate de aves rapaces migratorias, las que podrían facilitar la diseminación de la infección desde los países de origen, hecho que debe ser investigado.

  4. Interacciones entre el estornino pinto (Sturnus vulgaris) y aves nativas de Argentina por el uso de cavidades

    OpenAIRE

    Ibañez, Lucía M.; Girini, Juan M.; Palacio, Facundo X.; Fiorini, Vanina D.; Montalti, Diego

    2017-01-01

    Resumen: El estornino pinto, Sturnus vulgaris, es un ave introducida en Argentina que nidifica en cavidades y puede desplazar a otras aves de sus nidos. Durante las temporadas reproductivas 2010 y 2011 observamos en el parque Pereyra Iraola 3 intentos de usurpación de nidos de aves nativas, hornero (Furnarius rufus), carpintero real (Colaptes melanochloros) y carpintero campestre (C. campestris). Además, en 2 ocasiones se observaron estorninos nidificando en cavidades que estaban construyendo...

  5. Occurrence of Campylobacter spp. and Cryptosporidium spp. in seagulls (Larus spp.).

    Science.gov (United States)

    Moore, John E; Gilpin, Deidre; Crothers, Elizabeth; Canney, Anne; Kaneko, Aki; Matsuda, Motoo

    2002-01-01

    An investigation was carried out into the prevalence of thermophilic Campylobacter subspecies (spp.) and Cryptosporidium spp. in fresh fecal specimens collected from members of the gull family (Larus spp.) from three coastal locations of Northern Ireland. A total of 205 fresh fecal specimens were collected from gulls, of which 28 of 205 (13.7%) were positive for Campylobacter spp. and none of 205 for Cryptosporidium spp. Of these campylobacters, 21 of 28 (75%) isolates obtained belonged to the urease-positive thermophilic Campylobacter (UPTC) taxon, followed by five of 28 (17.9%) Campylobacter lari and 2/28 (7.1%) Campylobacter jejuni. It is significant that seagulls are the sole warm-blooded animal host of this bacterial taxon in Northern Ireland. It is proposed that physiological adaptation to starvation by gulls may lead to increased concentrations of urea through energy production from protein, yielding increased levels of urea for metabolism by UPTC organisms. In general, the possibility exists that environmental contamination of surface waters with campylobacters might be mediated by wild birds (such as gulls), where such waters are used for recreational purposes or where such waters are consumed untreated, might represent a risk to public health.

  6. La pájara vida: breve historia de la observación de aves en Colombia

    Directory of Open Access Journals (Sweden)

    Luis Germán Naranjo

    2016-12-01

    Colombia tiene una larga tradición ornitológica, pero a pesar de ello la observación de aves como pasatiempo solo en años recientes se hizo popular, lo cual no deja de ser curioso en un país que se enorgullece de tener la máxima riqueza de especies de aves silvestres en su territorio. Si bien la gran mayoría de los estudiosos de las aves son verdaderos apasionados por su oficio, la línea divisoria entre sus afanes y los de quienes se consideran primariamente pajareros apenas se empieza a trazar ya bien entrado el siglo XXI.

  7. Potencial de árvores frutíferas para a atração de aves

    Directory of Open Access Journals (Sweden)

    Leonardo Ribeiro Góes-Silva

    2012-04-01

    Full Text Available O objetivo deste trabalho é avaliar o potencial atrativo de aves presente em oito espécies de árvores frutíferas: Callicarpa reevesii Wall.ex Walp., Ficus microcarpa L.f., Ficus tomentella Miq., Michelia champaca L., Morus nigra L., Nectandra nitidula Nees, Schinus terebinthifolius Raddi e Syagrus romanzoffiana Cham. A interação de aves-plantas foi observada no município de Ouro Fino (MG, nos domínios da Serra da Mantiqueira. As referentes árvores foram observadas durante 24 horas nos períodos em que estavam frutificando, entre julho de 2007 a abril de 2008. Com o uso de ferramentas de análise de diversidade biológica, pode-se constatar que as espécies com maiores potenciais de atração de aves foram Ficus microcarpa, Ficus tomentella, Morus nigra, Nectandra nitidula e Schinus terebinthifolius e as espécies de aves que apresentaram alto índice de interação com as árvores foram Dacnis cayana, Elaenia flavogaster, Tangara cayana, Tersina viridis, Thraupis sayaca, Turdus amaurochalinus e Turdus rufiventris.

  8. Grupos avicaptores del Tardiglaciar : las aves de Berroberria

    Directory of Open Access Journals (Sweden)

    C. Diez Fernandez-Lomana

    1995-01-01

    Full Text Available En este artículo presentamos un estudio sobre marcas de cortes en aves de Berroberria. Los restos proceden de un nivel Magdaleniense superior final datable mediante C14 y con la ayuda de estudios palinológicos y arqueológicos. Los restos avianos pertenecen a la especie Lagopus mutus (perdiz nival y evidencian la caza de esta especie por grupos humanos. El estudio realizado plantea la existencia de poblaciones que recurrían a la caza de aves en épocas del año concretas, las cuales desarrollaron una estrategia de descuartizamiento primario en el lugar de caza y de descarnación en la cavidad. La ausencia de restos avianos quemados, y la minuciosidad en el desmembramiento y deshuesado, implican una búsqueda de carne aviar para un consumo no inmediato. Se postula un acopio de carne, con técnicas de secado y ahumado, para ulteriores necesidades alimenticias, ligadas al encarecimiento de los recursos durante el invierno. Las especies avianas presentes aportan algunas notas sobre las consiciones climáticas que imperaban en la zona.

  9. Riqueza e densidade de aves que nidificam em cavidades em plantações abandonadas de eucalipto

    Directory of Open Access Journals (Sweden)

    Hugo de Siqueira Pereira

    2015-05-01

    Full Text Available Monoculturas de árvores, como as de espécies de eucalipto, têm substituído florestas naturais, impactando a fauna pela perda de habitat e recursos. Diversas espécies de aves necessitam de ocos em árvores para nidificar. A falta de recursos como cavidades formadas pela degradação da árvore ou locais apropriados para serem criadas cavidades leva a diminuição na abundância das populações destas espécies. Este trabalho tem o objetivo de comparar a riqueza e a densidade de aves que nidificam em ocos em áreas de plantação de eucalipto abandonadas com áreas de vegetação nativa em duas unidades de conservação em Minas Gerais. Em cada tipo de vegetação de cada reserva foram estabelecidos 25 pontos, nas quais foi utilizado o método de contagem por remoção para o levantamento das espécies de aves. A riqueza de espécies de aves de cada área foi estimada por Jackniffe e a densidade foi estimada através do método de máxima verossimilhança; modelos candidatos que poderiam influenciar a abundância das aves foram avaliados utilizando-se o Critério de Informação Akaike (AIC. Os resultados mostraram que a riqueza de espécies foi maior nas áreas de florestas nativas e que a densidade foi significantemente mais alta nas áreas de florestas nativas, e que o tipo de vegetação e a hora do dia influenciam na abundância e detecção das aves. Esses resultados indicam que as plantações de eucaliptos influenciam negativamente a comunidade de aves que nidificam em ocos, provavelmente por causa da falta de cavidades ou de sub-bosque. Plantações de eucaliptos normalmente não substituem as florestas nativas e seu uso deve ser controlado em áreas de conservação.

  10. La ciencia de vida escrita en las aves. Tercera parte: Feekaje “Pava” (Penelope jacquacu

    Directory of Open Access Journals (Sweden)

    Aniceto Nejedeka

    2014-05-01

    Full Text Available Texto bilingüe muinane-español sobre el ave feekaje, “pava” (Penelope jacquacu, elaborado por Aniceto Nejedeka a partir del conocimiento de los mayores de la etnia muinane. Este texto es la tercera parte de un libro que hemos venido publicando por fascículos, titulado La ciencia de vida escrita en las aves. El muinane es una lengua de la familia lingüística bora.

  11. Técnica de Necropsia en Aves

    OpenAIRE

    L S Martínez-Acevedo

    2012-01-01

    En aves al igual que en otras especies, la necropsia hace parte integral de la medicina clínica. Esta se realiza con la finalidad de determinar la causa de enfermedad y muerte de un animal, confirmar un diagnóstico clínico o identificar la etiología de una enfermedad por medio de la toma de muestras complementarias. Siempre es indispensable tener en cuenta las diferencias anatómicas y biológicas de cada especie. El examen de necropsia es un procedimiento que debe realizarse de forma sistem...

  12. Relación del Virus del Oeste del Nilo con las Aves Silvestres

    OpenAIRE

    Diego Soler-Tovar; Victor J Vera

    2009-01-01

    El Virus del Oeste del Nilo (VON) es un Flavivirus que produce una encefalomielitis y puede afectar aves y mamíferos; los efectos varían desde poco notorios hasta la muerte, y en su difusión es importante la participación de especies animales como las aves donde es transmitido a través de mosquitos vectores. El VON se conoce de Uganda desde 1937 y está ampliamente distribuido en África, el oriente y la región sur y tropical de Eurasia. En el Hemisferio Occidental, el VON fue la primera causa ...

  13. The Kelp Gull as bioindicator of environmental chemicals in the Magellan region. A comparison with other coastal sites in Chile

    Directory of Open Access Journals (Sweden)

    Jacqueline Muñoz

    1999-12-01

    Full Text Available During the breeding seasons 1994/5 and 1995/6 we collected Kelp Gull (Larus dominicanus eggs from five locations in central to south Chile to study the contamination with mercury and organochlorine compounds. The sites were Algarrobo, Concepción, Maiquillahue Bay, Doña Sebastiana Island (Chalcao channel at Chiloé and Magdalena Island (Straits of Magellan. We found differences among the sites: Kelp Gull eggs from Chiloé and Algarrobo had the greatest concentrations of mercury (about 170 ng g-1 fresh weight. Residues of DDT were greatest in eggs from Algarrobo and Maiquillahue Bay, those of PCBs (polychlorinated biphenyls greatest at Algarrobo and Concepción. HCB had highest levels at Concepción. Considering all organochlorines, samples from Algarrobo had the highest concentrations, those from Chiloé the lowest. In consequence we found a geographical pattern from north to south, i.e., from areas with greater to lesser human impact. In comparison with other studies, the levels of environmental chemicals found in Kelp Gulls from Chile are much lower than those known to cause adverse effects on reproductive success.

  14. [Detection of Salmonella and Mycobacterium species in seagulls captured in Talcahuano, Chile].

    Science.gov (United States)

    López-Martín, Juana; Junod, Tania; Riquelme, Fredy; Contreras, Cecilia; González-Acuña, Daniel

    2011-11-01

    Salmonella can be isolated from the feces of seagulls. Therefore these birds can be a vector for dissemination of this pathogen. To evaluate the possible role of gulls as vectors of two important human and animal pathogens (My-cobacteria and Salmonella). One hundred twenty three Kelp gull (Larus dominicanus) and 60 Franklin gulls (Leucophaeus pipixcan) captured off the coast of the seaport of Talcahuano, were analyzed. Using traditional microbiological methods, the presence of Mycobacteria in cloacal swabs and feet lavages, was analyzed in both types of gulls. To detect the presence of Salmonella, feces, fecal and tracheal swabs, and feet lavage were analyzed from Franklin gulls. Feces, feet lavage, intestine, spleen, liver, kidney and lung, were examined in Kelp gulls. All Mycobacteria cultures were negative. Salmonella enterica cultures were positive in 25 % of Kelp gulls and 6.7 % of Franklin gulls. Four serovars were identified by serotyping. Enteritidis and Senfteberg serovars were found in both types of gulls. Anatum and Infantis serovars were found only in Kelp gulls. Feces of gulls captured during the winter had the highest yield of positive cultures (36.1%). Seagulls are an important Salmonella vector in Chile.

  15. LOS TANINOS EN LA ALIMENTACIÓN DE LAS AVES COMERCIALES

    Directory of Open Access Journals (Sweden)

    Carlos López Coello

    2006-10-01

    Full Text Available Este artículo de revisión aborda la importancia de los ácidos fenólicos, flavonoides, taninos y sus compuestos derivados en la nutrición y alimentación de las aves. Los sorgos café presentan altos tenores de taninos, lo cual les proporciona como ventajas la resistencia a pájaros y a algunas plagas, sin embargo, reducen el valor nutricional del grano para las aves. Las informaciones sobre el contenido de estos compuestos es aún incierta, principalmente en la literatura, donde los sorgos café tienen sólo estimaciones sobre su contenido de taninos. Estos compuestos afectan también la ganancia de peso y la conversión de alimentos. En el aspecto nutricional, los taninos reducen la disponibilidad de metionina, This review article discusses the effects of phenolic acids, flavonoids, tannins and derivatives in poultry feeding and nutrition. The high tannin sorghum is advantageous for grain producers because of its resistance to birds’ attacks and insects, as compared to low tannin cultivar, but the nutritional value is reduced. The information about the amont of these compounds is really uncertain in scientific literature, and the high tannin sorghum has only estimated values for its tannin percentage. It’s clear that tannins affect weight gain and feed efficiency. The tannin can affect necesitando de la suplementación de este aminoácido, mientras para las proteínas los valores de digestibilidad varian de 45.5 a 66.7% en comparación con 89.9% de los sorgos bajos en taninos. Por otro lado, la presencia de taninos combinada con micotoxinas pueden determinar reducciones significativas del comportamiento de las aves. Se sugiere, por tanto, como forma de disminuir los efectos perjudiciales de estos compuestos en raciones formuladas con sorgo café, la suplementación de metionina, no obstante, la utilización de niveles suplementarios de vitaminas y el uso de calentamiento en horno microondas, no mostró resultados positivos

  16. Food partitioning between breeding White-tailed Kites (Elanus leucurus; Aves; Accipitridae and Barn Owls (Tyto alba; Aves; Tytonidae in southern Brazil

    Directory of Open Access Journals (Sweden)

    DR. Scheibler

    Full Text Available I examined the diet of breeding White-tailed Kites (Elanus leucurus; Aves; Accipitridae and Barn Owls (Tyto alba; Aves; Tytonidae in an agrarian area of southern Brazil by analyzing regurgitated prey remains. The objective was to evaluate how these raptors, which differ markedly in their hunting activity periods (owls are nocturnal and kites diurnal, share their mammalian food component. 2,087 prey consumed by Barn Owls and 1,276 by White-tailed Kites were identified. They presented a high overlap of food-niches (Pianka’s index was 0.98. Based on the daily activity period of their main small mammal prey, a lower overlap would be expected. The crepuscular/nocturnal Mus musculus was the main prey for the diet of breeding Barn Owls (81% and White-tailed Kites (63%. This small exotic rodent provided 63% of the small mammal biomass ingested by owls and 44% by kites. Larger native small mammals were also considered important for the diet of kites, mainly because of their biomass contribution. Although these raptors differ markedly in their hunting activity periods, Barn Owls and White-tailed Kites are very similar predators in southern Brazil, overlapping their diets.

  17. Dos nuevos registros de piojos masticadores (Phthiraptera: Ischnocera: Philopteridae sobre Leptotila megalura (Aves: Columbidae en la Argentina Two new records of chewing lice (Phthiraptera: Ischnocera: Philopteridae on Leptotila megalura (Aves: Columbidae from Argentina

    Directory of Open Access Journals (Sweden)

    Leonor Guardia

    2008-12-01

    Full Text Available Dos especies de piojos masticadores (Phthiraptera: Ischnocera: Philopteridae, Physconelloides ceratoceps Ewing y Columbicola gracilicapitis Carriker, son registradas por primera vez sobre Leptotila megalura Sclater & Salvin ("yerutí yungueña" (Aves: Columbidae. Además, C. gracilicapitis es citada por primera vez para la Argentina.Two species of chewing lice (Phthiraptera: Ischnocera: Philopteridae, Physconelloides ceratoceps Ewing and Columbicola gracilicapitis Carriker are recorded for the first time on Leptotila megalura Sclater & Salvin ("Large-tailed dove" (Aves: Columbidae. In addition, C. gracilicapitis is recorded for the first time in Argentina.

  18. AVE0991, a nonpeptide analogue of Ang-(1-7), attenuates aging-related neuroinflammation.

    Science.gov (United States)

    Jiang, Teng; Xue, Liu-Jun; Yang, Yang; Wang, Qing-Guang; Xue, Xiao; Ou, Zhou; Gao, Qing; Shi, Jian-Quan; Wu, Liang; Zhang, Ying-Dong

    2018-04-17

    During the aging process, chronic neuroinflammation induced by microglia is detrimental for the brain and contributes to the etiology of several aging-related neurodegenerative diseases such as Alzheimer's disease and Parkinson's disease. As a newly identified axis of renin-angiotensin system, ACE2/Ang-(1-7)/MAS1 axis plays a crucial role in modulating inflammatory responses under various pathological conditions. However, its relationship with aging-related neuroinflammation is less studied so far. In this study, by using SAMP8 mice, an animal model of accelerated aging, we revealed that the neuroinflammation in the aged brain might be attributed to a decreased level of Ang-(1-7). More importantly, we provided evidence that AVE0991, a nonpeptide analogue of Ang-(1-7), attenuated the aging-related neuroinflammation via suppression of microglial-mediated inflammatory response through a MAS1 receptor-dependent manner. Meanwhile, this protective effect might be ascribed to the M2 activation of microglia induced by AVE0991. Taken together, these findings reveal the association of Ang-(1-7) with the inflammatory response in the aged brain and uncover the potential of its nonpeptide analogue AVE0991 in attenuation of aging-related neuroinflammation.

  19. Effects of invasive European fire ants (Myrmica rubra on herring gull (Larus argentatus reproduction.

    Directory of Open Access Journals (Sweden)

    Luke E DeFisher

    Full Text Available Various invasive ant species have negatively affected reproductive success in birds by disrupting nest site selection, incubation patterns, food supply, and by direct predation on nestlings. Impacts can be particularly severe when non-native ants colonize seabird nesting islands where thousands of birds may nest in high densities on the ground or in burrows or crevices. Here we report on the first documented effects of Myrmica rubra, the European fire ant, on the reproduction of birds in its non-native range. We documented herring gulls (Larus argentatus on Appledore Island, Maine, engaging in more erratic incubation behaviors at nests infested by the ants. Newly-hatched chicks in some nests were swarmed by ants, leading to rapid chick death. Due to high overall rates of chick mortality, survival probabilities did not vary between nests with and without ant activity, however chick growth rates were slower at nests with ants than at ant-free nests. Ant infestation likely leads to longer-term fitness consequences because slower growth rates early in life may ultimately lead to lower post-fledging survival probabilities.

  20. Using the Spanish Online Resource Aula Virtual de Español (AVE to Promote a Blended Teaching Approach in High School Spanish Language Classrooms / Utilisation de la ressource en ligne espagnole AVE pour favoriser l’approche de l’enseignement hybride

    Directory of Open Access Journals (Sweden)

    Martine Pellerin

    2012-02-01

    Full Text Available The study explores the effectiveness of the implementation of blended teaching (BT by combining the Spanish online resource Aula Virtual de Español (AVE with the face-to-face (F2F delivery approach in second language Spanish programs in two high schools in Alberta, Canada. Findings demonstrate the effectiveness of combining the online resource AVE to the F2F teaching approach to promote BT in the Spanish language classroom. The use of BT approach in the language classroom had a positive impact on the students’ attitudes towards the study of the language, the students’ motivation and their participation levels in class, as well as their use of the target language in the classroom. Moreover, the multimodal experiences provided by the use of the online AVE resource combined with the F2F delivery approach responded more to the different learners learning styles and specific needs. Finally, the use of online AVE in conjunction with F2F teaching was also perceived as an effective tool in the preparation for the International Spanish Diplomas (DELE taken by the students in the more advanced Spanish classes. La présente étude explore l’efficacité de l’enseignement hybride combinant l’utilisation de la ressource espagnole en ligne Aula Virtual de Español (AVE et l’interaction face à face dans les programmes d’enseignement de l’espagnol, langue seconde, dans deux écoles secondaires de l’Alberta (Canada. Les résultats démontrent l’efficacité de la combinaison de la ressource en ligne AVE à la prestation face à face pour favoriser l’approche de l’enseignement hybride dans les cours d’espagnol. L’utilisation de l’approche de l’enseignement hybride dans le cours de langue a eu une incidence positive sur l’attitude des élèves relativement à l’apprentissage de la langue, la motivation des élèves et leur taux de participation en classe, ainsi que leur utilisation de la langue d’apprentissage dans la classe

  1. Associations between chewing lice (Insecta, Phthiraptera and albatrosses and petrels (Aves, Procellariiformes collected in Brazil Associações entre malófagos (Insecta, Phthiraptera e albatrozes e petréis (Aves, Procellariiformes capturados no Brasil

    Directory of Open Access Journals (Sweden)

    Michel P. Valim

    2006-12-01

    Full Text Available Chewing lice were searched on 197 skins of 28 species of procellariiform birds collected in Brazil. A total of 38 species of lice were found on 112 skins belonging to 22 bird species. The lice were slide-mounted and identified. A list of lice species found and their host species is given and some host-louse associations are discussed under an evolutionary perspective.Malófagos foram procurados em 197 peles de 28 espécies de aves Procellariiformes capturadas no Brasil. Um total de 38 espécies de piolhos foram encontradas em 112 peles pertencentes a 22 espécies de aves. Os piolhos foram montados em lâminas e identificados. Uma lista com as espécies de piolhos encontradas e seus hospedeiros é dada, além de algumas associações entre os piolhos e as aves serem discutidas sob uma perspectiva evolutiva.

  2. Comunidades de aves y lepidopteros diurnos y las relaciones entre ellas en bosque nuboso y cafetal de Finca Santa Maura, Jinotega

    Science.gov (United States)

    M. Torrez; W. Arendt; J. M. Maes

    2013-01-01

    Para evaluar la diversidad de aves y mariposas ninfálidas visitamos la Estación Biológica Juan Roberto Zarruk en Jinotega, donde colectamos datos en todos los hábitats presentes en la finca. Obtuvimos 123 especies de aves y 29 especies de ninfálidos. El hábitat con mayor riqueza para aves fue el cafetal y para ninfálidos el tacotal. Entre las especies más comunes...

  3. Sexual dimorphism in Ramphastos toco and Ramphastos dicolorus (Piciformes, Aves

    Directory of Open Access Journals (Sweden)

    Márcio S. Castro

    2003-03-01

    Full Text Available Con frecuencia, en la familia Ramphastidae no hay un dimorfismo sexual aparente, excepto en Pteroglossus viridis y en el género Selenidera. Muchos criadores de aves silvestres creen que los especímenes de Ramphastos toco pueden ser sexados usando las caracteríticas del pico. En este estudio, fueron analizadas algunas variables feno-típicas discriminantes en aves cuyo sexo fue previamente determinado con metodos citogenéticos. Un total de 51 especimenes de R. toco y 20 de R. dicolorus fueron estudiados. Los parámetros estadísticos significativos que son útiles para distinguir el sexo en estas especies son la longitud del culmen y del tomium, la longitud del pico corneo inferior y de la cloaca. Usando estos parámetros, los criadores de aves cautivas pueden sexar los especimenes de Ramphastos toco mediante análisis fenotípico y formar parejas reproductoras más rapidamente.Phenotypic sexual dimorphism seems to be rare in the Ramphastidae family, except in Pteroglossus viridis and in the genus Selenidera. Many breeders of wild birds believe that specimens of Ramphastos toco can be sexed using bill characteristics. In this study, various discriminant phenotypic variables were analyzed in birds which were sexed cytogenetically. Fifty-one specimens of R. toco and 20 R. dicolorus were studied. The statistically significant parameters which served to distinguish the sex in these species were the length of the culmen and tomium, length of the lower corneous beak and the cloaca. Using these parameters, capitive bird breeders can determine sex of R. toco specimens by phenotypic analysis and form breeding couples more quickly.

  4. Variación temporal y espacial de aves playeras en la laguna Barra de Navidad, Jalisco, en tres temporadas no reproductivas

    OpenAIRE

    Salvador Hernández; Sergio Serrano; Xóchitl A. Hernández; María Isabel Robles

    2012-01-01

    Hay un escaso conocimiento de las aves playeras en los humedales costeros de Jalisco, y en particular en la laguna Barra de Navidad. El presente trabajo contribuye al conocimiento de este grupo de aves y describe su distribución temporal y espacial en la laguna Barra de Navidad durante tres temporadas no reproductivas (1999-2000, 2006-2007 y 2008-2009). Se realizaron censos mensuales de noviembre-abril en las tres temporadas con el fin de registrar todas las especies de aves playeras. Se iden...

  5. Variación temporal y espacial de aves playeras en la laguna Barra de Navidad, Jalisco, en tres temporadas no reproductivas

    Directory of Open Access Journals (Sweden)

    Salvador Hernández

    2012-09-01

    Full Text Available Hay un escaso conocimiento de las aves playeras en los humedales costeros de Jalisco, y en particular en la laguna Barra de Navidad. El presente trabajo contribuye al conocimiento de este grupo de aves y describe su distribución temporal y espacial en la laguna Barra de Navidad durante tres temporadas no reproductivas (1999-2000, 2006-2007 y 2008-2009. Se realizaron censos mensuales de noviembre-abril en las tres temporadas con el fin de registrar todas las especies de aves playeras. Se identificaron 19 especies (tres residentes y 16 visitantes de invierno, de las cuales Charadrius wilsonia, Limosa fedoa y Tringa semipalmata presentaron la mayor abundancia. Doce especies son consideradas como prioritarias en la “Estrategia para la Conservación y Manejo de las Aves Playeras y su Hábitat en México”. El mayor número de especies fue registrado en noviembre, diciembre y marzo en la primera y tercera temporada. El mayor número de individuos fue registrado alimentándose en marea baja, principalmente en diciembre, enero y febrero de la primera y tercera temporada. En marea baja hubo un mayor número de especies e individuos alimentándose en la zona C. Esta zona se caracterizó por tener sustratos lodosos expuestos durante marea baja y que fueron aprovechados por las aves para alimentarse. La laguna Barra de Navidad proporcionó hábitats de alimentación y descanso para las aves residentes y migratorias. Sin embargo, estos hábitats se ven amenazados por las actividades humanas realizadas dentro de la laguna, que sin duda tendrán consecuencias negativas para la distribución y abundancia de las aves playeras.

  6. Compost de ave de corral como componente de sustratos

    Directory of Open Access Journals (Sweden)

    Lorena Alejandra Barbaro¹

    2011-07-01

    Full Text Available El sustrato para cultivo es un material que colocado en un contenedor permite el anclaje del sistema radicular, proporcionando agua y nutrientes. Entre los materiales empleados para formular sustratos se encuentran los compost. Entre ellos el compost de cama de ave de corral (CAC, elaborado en base al estiércol de aves mezclado con los materiales que forman su lecho. El objetivo de este trabajo fue evaluar dos compost de CAC como componente de sustrato, mediante el desarrollo de plantas de Coral (Salvia splendens. Uno de los compost contenía cama de stud (CAC+S durante su compostaje. Se formularon sustratos con diferentes proporciones de compost de CAC, compost de corteza de pino y pinocha, luego fueron analizados física y químicamente. A las plantas cultivadas en cada sustrato se midió la longitud y el diámetro del tallo, peso fresco y seco de la parte aérea y radicular. La densidad, porosidad y capacidad de retención de agua de todos los sustratos fueron aceptables. El pH de ambos compost de CAC fue mayor a 6,3, y los valores de las mezclas se encontraron dentro del rango aceptable. Todos los sustratos superaron 1 dS m-1 (1+5 v/v, principalmente los formulados con compost de CAC+S, cuyo material puro contenía altos niveles salinos. Al disminuir el porcentaje de CAC en las mezclas, diminuyó la concentración de cada nutriente. Las plantas cultivadas en el sustrato comercial y en las mezclas con 20% de CAC fueron las que lograron los mayores pesos aéreos y radiculares, diámetro y longitud del tallo. Por lo tanto, el compost de ave de corral podría ser una alternativa viable como componente de sustrato si se lo utiliza hasta un 20%.

  7. PRESENCIA DEL VIRUS DE INFLUENZA AVIAR EN AVES SILVESTRES DE LOS HUMEDALES DE PUERTO VIEJO, LIMA

    OpenAIRE

    Segovia H., Karen; Icochea D., Eliana; González V., Rosa; Ghersi, Bruno; González Z., Armando

    2013-01-01

    El objetivo del estudio fue determinar la presencia del virus de influenza aviar (IA) en aves silvestres presentes en los Humedales de Puerto Viejo, en el departamento de Lima. Novecientas muestras de heces frescas de 18 especies de aves silvestres fueron colectadas desde abril de 2008 hasta febrero de 2009. Dichas muestras se analizaron mediante aislamiento viral en huevos embrionados de pollo SPF. Se logró aislar siete cepas de virus de IA de baja patogenicidad del subtipo H12N5 (seis cepas...

  8. Persistent organic pollutants, heavy metals and parasites in the glaucous gull (Larus hyperboreus) on Spitsbergen

    Energy Technology Data Exchange (ETDEWEB)

    Sagerup, Kjetil, E-mail: kjetil.sagerup@uit.n [Tromso University Museum, NO-9037 Tromso (Norway); Savinov, Vladimir; Savinova, Tatiana [Akvaplan-niva, Polar Environmental Centre, NO-9296 Tromso (Norway); Kuklin, Vadim [Murmansk Marine Biological Institute, Kola Scientific Centre, Russian Academy of Sciences, Murmansk (Russian Federation); Muir, Derek C.G. [Aquatic Ecosystem Protection Research Division, Environment Canada, Burlington ON L7R 4A6 (Canada); Gabrielsen, Geir W. [Norwegian Polar Institute, Polar Environmental Centre, NO-9296 Tromso (Norway)

    2009-08-15

    The prediction of a higher parasite infection as a consequence of an impaired immune system with increasing persistent organic pollution (POP) and heavy metal levels were investigated in adult glaucous gull (Larus hyperboreus) from Svalbard. The levels of chlorinated pesticides, polychlorinated biphenyls (PCBs), toxaphenes and polybrominated diphenyl ethers (PBDEs) were measured in liver. Cupper, cadmium, lead, mercury, selenium and zinc were measured in kidney samples. An elevated ratio of PCB-118 was found, suggesting that local contamination from the settlement was detectable in the glaucous gull. Eight cestodes, four nematodes, two acanthocephalan and three trematode helminth species were found in the intestine. A positive correlation was found between cestode intensities and selenium levels and between acanthocephalan intensities and mercury levels. No correlation was found between parasite intensities and POP concentrations. It is concluded that the contaminant levels found in glaucous gulls do not cause immune suppression severe enough to affect parasite intensity. - Consistent relationships between contaminant level and parasite intensity, as an immunotoxic endpoint unit, were not found in the present study.

  9. Persistent organic pollutants, heavy metals and parasites in the glaucous gull (Larus hyperboreus) on Spitsbergen

    International Nuclear Information System (INIS)

    Sagerup, Kjetil; Savinov, Vladimir; Savinova, Tatiana; Kuklin, Vadim; Muir, Derek C.G.; Gabrielsen, Geir W.

    2009-01-01

    The prediction of a higher parasite infection as a consequence of an impaired immune system with increasing persistent organic pollution (POP) and heavy metal levels were investigated in adult glaucous gull (Larus hyperboreus) from Svalbard. The levels of chlorinated pesticides, polychlorinated biphenyls (PCBs), toxaphenes and polybrominated diphenyl ethers (PBDEs) were measured in liver. Cupper, cadmium, lead, mercury, selenium and zinc were measured in kidney samples. An elevated ratio of PCB-118 was found, suggesting that local contamination from the settlement was detectable in the glaucous gull. Eight cestodes, four nematodes, two acanthocephalan and three trematode helminth species were found in the intestine. A positive correlation was found between cestode intensities and selenium levels and between acanthocephalan intensities and mercury levels. No correlation was found between parasite intensities and POP concentrations. It is concluded that the contaminant levels found in glaucous gulls do not cause immune suppression severe enough to affect parasite intensity. - Consistent relationships between contaminant level and parasite intensity, as an immunotoxic endpoint unit, were not found in the present study.

  10. Wild Birds as biological indicators of environmental pollution: biotyping and antimicrobial resistance patterns of Escherichia coli isolated from Audouin's gulls (Larus Audouinii living in the Bay of Gallipoli (Italy

    Directory of Open Access Journals (Sweden)

    Egidio Mallia

    2010-01-01

    Full Text Available E. Coli biotyping and antimicrobial succeptibility tests were performed on fortyeight cloacal swabs collected from a popoulation of Audouin's gulls ((Larus Audouinii living in the Bay of Gallipoli (Lecce, Italy. The aim was to assess the pathogenic potential of the strains the gulls carry and shed into the environment and to gain a better understanding of the microbial pollution of the aera they live in.

  11. Wild Birds as biological indicators of environmental pollution: biotyping and antimicrobial resistance patterns of Escherichia coli isolated from Audouin's gulls (Larus Audouinii living in the Bay of Gallipoli (Italy

    Directory of Open Access Journals (Sweden)

    Antonio Camarda

    2006-01-01

    Full Text Available E. Coli biotyping and antimicrobial succeptibility tests were performed on fortyeight cloacal swabs collected from a popoulation of Audouin's gulls ((Larus Audouinii living in the Bay of Gallipoli (Lecce, Italy. The aim was to assess the pathogenic potential of the strains the gulls carry and shed into the environment and to gain a better understanding of the microbial pollution of the aera they live in.

  12. Nidificação de aves em duas localidades amazonicas : sucesso e adaptações

    OpenAIRE

    Yoshika Oniki Willis

    1986-01-01

    Resumo: As taxas de sucesso em ninhos de aves bera como as características de ninhos e ovos relacionados com o ambiente foram estudadas em duas localidades brasileiras tropicais, Belém e Manaus. As taxas de mortalidade em ninhos de aves, de Belém e Manaus, medidas pela fórmula N/(P + S + N), sugerida por Mayfield (1975) variaram entre 1,5 e 6,8 % por dia para diferentes tipos de ninhos e habitats. Sendo que estas figuras às vezes não são significantemente mais altas que taxas constatadas em z...

  13. Aves de Caldas: la complejidad cotidiana entre la sobrevivencia y la belleza

    Directory of Open Access Journals (Sweden)

    Natalia Ruíz Rodgers

    2016-12-01

    En la región andina central de Colombia, la belleza resulta aún más difícil de analizar debido a que es una región muy heterogénea, con una variación altitudinal amplia, una topografía desigual, condiciones climáticas y edafológicas diversas, diferentes formaciones vegetales (bosque andino, bosque de niebla, páramos, nieves perpetuas y zonas productivas (cafetales, guaduales, ganadería, cultivos de papa, frutales, minería, etc.. Toda esta heterogeneidad produce una gran riqueza de especies, solo Caldas acoge el cuarenta y ocho por ciento de las aves que se encuentran en el país. Esta riqueza se representa además en la importancia que tienen las aves gracias a sus múltiples interacciones, su efecto en el ecosistema y sus diferentes estrategias evolutivas.

  14. Macroanatomic, light, and electron microscopic examination of pecten oculi in the seagull (Larus canus).

    Science.gov (United States)

    Ince, Nazan Gezer; Onuk, Burcu; Kabak, Yonca Betil; Alan, Aydin; Kabak, Murat

    2017-07-01

    The present study was conducted to determine macroanatomic characteristic as well as light and electron microscopic examination (SEM) of pecten oculi and totally 20 bulbus oculi belonging to 10 seagulls (Larus canus) were used. Pecten oculi formations consisted of 18 to 21 pleats and their shape looked like a snail. Apical length of the pleats forming pecten oculi were averagely measured as 5.77 ± 0.56 mm, retina-dependent base length was 9.01 ± 1.35 mm and height was measured as 6.4 ± 0.62 mm. In pecten oculi formations which extend up to 1/3 of the bulbus oculi, two different vascular formations were determined according to thickness of the vessel diameter. Among these, vessels with larger diameters which are less than the others in count were classified as afferent and efferent vessels, smaller vessels which are greater in size were classified as capillaries. Furthermore, the granules which were observed intensely in apical side of the pleats of pecten oculi were observed to distribute randomly along the plica. © 2017 Wiley Periodicals, Inc.

  15. Relationships between reproductive performance and organochlorine contaminants in great black-backed gulls (Larus marinus)

    International Nuclear Information System (INIS)

    Helberg, Morten; Bustnes, Jan Ove; Erikstad, Kjell Einar; Kristiansen, Kai Ove; Skaare, Janneche Utne

    2005-01-01

    The great black-backed gull Larus marinus is a top predator in subarctic and temperate marine ecosystems, and the aim of this study was to investigate if organochlorines (OCs) were related to reproductive performance in this species at the subarctic parts of the Norwegian Coast. We measured blood levels of various OCs in 53 breeding birds. The OC levels were relatively low compared to levels found in nearby arctic areas. In females, however, there was a significant positive relationship between blood concentrations of OCs, especially hexachlorobenzene (HCB) and, p,p'-dichlorodiphenyldichloroethylene (DDE), and egg laying date, and a positive relationship between the probability of nest predation and blood concentration of β-hexachlorocyclohexane (β-HCH), oxychlordane, and DDE. In females with high levels of OCs, especially persistent polychlorinated biphenyls (PCBs), there was also a decline in egg volume as egg laying progressed; i.e. the second and third laid egg were relatively smaller, compared to females with low OC levels. No relationships between reproductive parameters and OC levels were found in males. - Elevated blood concentrations of organochlorine contaminants correlate with poor reproductive performance in female great black-backed gulls

  16. SEASONAL DISTRIBUTION OF YELLOW-LEGGED GULL (LARUS CACHINNANS PALLAS, 1811 OF ISLANSDS OF OBITOCHNAYA BAY (NORTH-WEST AZOV SEA AREA

    Directory of Open Access Journals (Sweden)

    Dubinina U.U.

    2013-09-01

    Full Text Available Considered territorial connection of Yellow-legged gull in breeding colony on islands Obitochnaya Bay. Analysis of the basic stages of the annual life cycle of Larus cachinnans Pallas, 1811 with taking into account the seasonal characteristics of each age group of seagulls (young, immature, adult. Based on this data set direction and distance of displacement, among whom were identified intra-continental migrations, domestic migrations within the territory of Ukraine and migrations within the nesting area. Settlement species on islands Obitochnaya Bay characterized by: high degree conservatism of adult Yellow-legged gull a wide range in season after nesting migrations and variance of young birds, the exchange of individuals between neighbouring settlements and the establishment of new colonies at the expense of immature individuals.

  17. Relação entre Triatoma infestans, aves domésticas e o homem num povoado de Santiago del Estero, Argentina

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    Gajate Patrícia P.

    1994-01-01

    Full Text Available Determinou-se a associação entre Triatoma infestans, aves domésticas e o homem no povoado de Trinidad, Santiago del Estero, Argentina. Para coletar triatomíneos foram realizadas quatro amostragens no peridomicílio de seis casas, utilizando-se o método de captura hora/homem (dezembro de 1991 a outubro de 1992. Os anexos foram classificados em antrópicos (onde o homem realiza atividades cotidianas e não-antrópicos. Além disso, determinou-se o perfil alimentar dos barbeiros. De um total de 134 ecótopos investigados, 21% tinham T. infestans; 22% possuíam aves domésticas; e 54% eram antrópicos. Em 25% destes ecótopos foram encontradas aves e T. infestans simultaneamente. As aves foram os únicos animais domésticos associados com o T. infestans, sendo que esta relação só ocorreu nos ecótopos antrópicos. A proporção de ingestas em aves (61/146 foi altamente significativa. Em Trinidad não há galinheiros, utilizando-se, assim, os anexos entrópicos do peridomicílio como local para se construir os ninhos para as aves. tanto pelos elementos usados na preparação dos ninhos como pelo uso posterior dos mesmos, poder-se-ia estabelecer um fluxo periódico de barbeiros do intradomicílio para o peridomicílio, e vice-versa, através do transporte passivo. Esta relação estreita entre Triatoma infestans, aves domésticas e o homem, encontrada nos ecótopos antrópicos, onde também existem outros reservatórios de T. cruzi, como os cães, favorece a manutenção de colônias de barbeiros domiciliares e a transmissão da doença de Chagas ao homem.

  18. Relação entre Triatoma infestans, aves domésticas e o homem num povoado de Santiago del Estero, Argentina

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    Patrícia P. Gajate

    Full Text Available Determinou-se a associação entre Triatoma infestans, aves domésticas e o homem no povoado de Trinidad, Santiago del Estero, Argentina. Para coletar triatomíneos foram realizadas quatro amostragens no peridomicílio de seis casas, utilizando-se o método de captura hora/homem (dezembro de 1991 a outubro de 1992. Os anexos foram classificados em antrópicos (onde o homem realiza atividades cotidianas e não-antrópicos. Além disso, determinou-se o perfil alimentar dos barbeiros. De um total de 134 ecótopos investigados, 21% tinham T. infestans; 22% possuíam aves domésticas; e 54% eram antrópicos. Em 25% destes ecótopos foram encontradas aves e T. infestans simultaneamente. As aves foram os únicos animais domésticos associados com o T. infestans, sendo que esta relação só ocorreu nos ecótopos antrópicos. A proporção de ingestas em aves (61/146 foi altamente significativa. Em Trinidad não há galinheiros, utilizando-se, assim, os anexos entrópicos do peridomicílio como local para se construir os ninhos para as aves. tanto pelos elementos usados na preparação dos ninhos como pelo uso posterior dos mesmos, poder-se-ia estabelecer um fluxo periódico de barbeiros do intradomicílio para o peridomicílio, e vice-versa, através do transporte passivo. Esta relação estreita entre Triatoma infestans, aves domésticas e o homem, encontrada nos ecótopos antrópicos, onde também existem outros reservatórios de T. cruzi, como os cães, favorece a manutenção de colônias de barbeiros domiciliares e a transmissão da doença de Chagas ao homem.

  19. Description and proposed life cycle of Maritrema novaezealandensis n. sp. (Microphallidae) parasitic in red-billed gulls, Larus novaehollandiae scopulinus, from Otago Harbor, South Island, New Zealand

    DEFF Research Database (Denmark)

    Martorelli, Sergio R; Fredensborg, Brian Lund; Mouritsen, Kim Nørgaard

    2004-01-01

    Maritrema novaezealandensis n. sp. is described from Otago Harbor, South Island, New Zealand, on the basis of adult specimens collected from the Red-billed gull, Larus novaehollandiae scopulinus, and excysted metacercariae obtained from crabs. It belongs to the "eroliae group" and differs from...... snail, Zeacumantus subcarinatus, in which the cercarial stage is produced in sporocysts located within the gonad of the snail. At least 3 crab species (Hemigrapsus crenulatus, Macrophtalmus hirtipes, and Halicarcinus whitei) and several species of amphipods act as second intermediate hosts...

  20. The construction of women and the situation of exile in Aves exóticas by Reina Roffé

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    Nadia Vannesa Mendez

    2015-09-01

    Full Text Available This article analyze the construction of a different style of woman in the stories compiled in the book´s Reina Roffé Aves Exóticas (2004. The female characters that appear are crossed by different ways of exile, as the political exile caused by military dictatorships. It is also interesting as, in the second edition of Aves, Roffé raises a new reading of the play Frankenstein by Mary Shelley.

  1. Crianza Artificial de Aves Rapaces Nocturnas en Cautiverio

    OpenAIRE

    Carolina Sastre-Corredor

    2009-01-01

    El objetivo de este trabajo, fue realizar el seguimiento a dos casos de aves rapaces neonatos que ingresaron al Centro de Recepción y Rehabilitación de Fauna Silvestre (CRRFS) de la Secretaria Distrital de Ambiente (SDA), con el fin de registrar, conocer e informar el manejo general de los mismos. Al momento de ingresar el primer grupo de ejemplares al CRRFS, se detectaron varias limitaciones de tipo físico, por ejemplo insumos alimentarios en mal estado o inexistencia de los mismos, y de...

  2. DIAGNÓSTICO DA REALIDADE DOS CRIATÓRIOS DE AVES NA COMUNIDADE BASE FÍSICA – IPANGUAÇU/RN

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    José Geraldo Bezerra Galvão Júnior

    2010-02-01

    Full Text Available Este trabalho objetivou realizar um diagnóstico de caracterização dos sistemas de criação de aves adotados na Comunidade Rural Base Física, município de Ipanguaçu/RN, com o intuito de produzir subsídios para orientação de ações de suporte técnico à comunidade local. Foram elaborados e aplicados 50 questionários, com questões relacionadas ao perfil socioeconômico dos criadores e aos aspectos zootécnicos relativos à criação de aves. Posteriormente, os dados foram agrupados e analisados graficamente, utilizando-se planilha eletrônica. Na análise dos resultados, a maioria dos entrevistados corresponderam ao gênero feminino (70%, faixa etária de 41 a 60 anos (50%, representados em sua maioria por agricultores (52%, apresentando renda familiar de menos de 1 salário mínimo (16%, até 2 salários (20% e acima de 2 salários mínimos (34%. Na análise das respostas referentes aos aspectos zootécnicos da criação de aves, constatou-se um rebanho efetivo de 1046 aves, onde 81% dos entrevistados mantinham a criação para consumo da família. A avicultura representa grande importância na agricultura familiar da região, tanto na questão de segurança alimentar para a família quanto no aspecto econômico. A alimentação foi considerada o principal fator limitante para o desenvolvimento da criação, seguida da área para criação e presença de doenças nas aves. Programas de capacitação e assistência técnica devem ser implantados, para que possa haver um incremento quantitativo e qualitativo da criação de aves, principalmente, ligados aos aspectos de manejo alimentar e sanitário, bem como, no delineamento de modelos produtivos que expressem competitividade no setor. PALAVRAS-CHAVE: avicultura, sistemas de criação, agricultura familiar.

  3. AVE5026, a new hemisynthetic ultra-low-molecular-weight heparin for the prevention of venous thromboembolism in patients after total knee replacement surgery

    DEFF Research Database (Denmark)

    Lassen, Michael Rud; Dahl, O E; Mismetti, P

    2009-01-01

    BACKGROUND: AVE5026 is a new hemisynthetic ultra-low-molecular-weight heparin, with a novel anti-thrombotic profile resulting from high anti-factor (F)Xa activity and residual anti-FIIa activity. AVE5026 is in clinical development for venous thromboembolism (VTE) prevention, a frequent complication....... The primary safety outcome was the incidence of major bleeding. RESULTS: The primary efficacy outcome was assessed in 464 patients. There was a significant dose-response across the five AVE5026 groups for VTE prevention (Pincidence of VTE ranging from 5.3% to 44.1% compared with 35...

  4. Kelp and dolphin gulls cause perineal wounds in South American fur seal pups (Arctocephalus australis) at Guafo Island, Chilean Patagonia.

    Science.gov (United States)

    Seguel, Mauricio; Muñoz, Francisco; Montalva, Felipe; Perez-Venegas, Diego; Pavés, Héctor; Gottdenker, Nicole

    2017-07-01

    During five reproductive seasons, we documented the presence, extent and origin of perineal wounds in South American fur seal pups ( Arctocephalus australis ) on Guafo Island, Northern Chilean Patagonia. The seasonal prevalence of perineal wounds ranged from 5 to 9%, and new cases were more common at the end of the breeding season (February), when pups were on average two months old and were actively expelling hookworms ( Uncinaria sp). Histologically, wounds corresponded to marked ulcerative lymphoplasmacytic and histiocytic dermatitis with granulation tissue and mixed bacterial colonies. In 2015 and 2017, kelp gulls ( Larus dominicanus ) and dolphin gulls ( Leucophaeus scoresbii ) were observed picking and wounding the perineal area of marked pups. This behaviour occurred more frequently after the pups' defecation, when sea gulls engaged in consumption of pups' faeces. The affected pups usually had moderate to marked hookworm infections along with bloody diarrhoea and anaemia. Pups with severe wounds (23% of affected animals) had swollen perineal areas and signs of secondary systemic bacterial infection. We propose that seagulls on Guafo Island have learned to consume remains of blood and parasites in the faeces of pups affected by hookworm infection, causing perineal wounds during this process. We conclude that this perineal wounding is an unintentional, occasional negative effect of an otherwise commensal gull-fur seal relationship.

  5. Reproductive Dynamics of Sterna hirundinacea Lesson, 1831 in Ilha dos Cardos, Santa Catarina, Brazil

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    Hélio Augusto Alves Fracasso

    2014-01-01

    Full Text Available In this work, we intend to describe the reproductive dynamics of Sterna hirundinacea in an island from South Brazil. We studied the reproductive biology of this species in its natural environment and provide data on their growth, survival, and reproductive success in Ilha dos Cardos, Santa Catarina, South Brazil. Samplings were carried out daily on the island throughout the reproductive seasons of 2003, 2005, and 2006 and the different stages of development of the chicks were characterized according to age, length of the beak, and plumage characteristics. We provide a basic equation Lm=167.91 (1-e-0.062t--0.23 to determine the approximate age of individuals using their body mass. The main cause of chick mortality on the island was natural (63.17% in 2003, 81.41% in 2005, and 79.96% in 2006, whereas predation contributed to mortality in a proportion of 38.83% in 2003, 18.59% in 2005, and 20.04% in 2006. The absence in the area of the chicks’ main predator, Kelp gull (Larus dominicanus, the large number of chicks that reached the final stages of development, and their reproductive success demonstrate that Ilha dos Cardos is an important breeding site for the species in southern Brazil.

  6. Nuevos avistamientos de aves para Tamaulipas, México

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    Erick Rubén Rodríguez-Ruíz

    2012-07-01

    Full Text Available Los inventarios y registros avifaunísticos facilitan el conocimiento de la composición de las comunidades de aves y ayudan a la comprensión de las interacciones en los ecosistemas. En este trabajo obtuvimos registros notables de cinco especies de aves de 2005 a 2011 en los municipios de Altamira, El Mante, González, Jaumave, Madero, Matamoros, Miquihuana y Soto La Marina, en el estado de Tamaulipas. Registramos por primera vez la presencia de Aphelocoma californica e Icterus wagleri en el estado, confirmando las predicciones de algunos autores. Con la colecta de un nido, reafirmamos la presencia de Psarocolius montezuma en el sur del estado. Registramos nuevamente la presencia de Falco femoralis en la entidad, especie reportada hace algunos años como extirpada. ParaLepidocolaptes affinis definimos parte de su área de distribución en los límites neotropicales del estado. Las modificaciones antropogénicas en los ecosistemas son algunos de los principales factores que influyen en los movimientos distribucionales de las especies; por esto, es necesario incrementar el esfuerzo de muestreo que permita el registro de un mayor número de especies y así poder tener un mejor conocimiento de su distribución y temporalidad a nivel local y regional para entender su historia natural y ecología a escalas más finas.

  7. Conhecimento de moradores sobre frugivoria por aves em uma região urbanizada e com fragmentos de restinga no sudeste do Brasil

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    César Cestari

    2009-06-01

    Full Text Available http://dx.doi.org/10.5007/2175-7925.2009v22n3p221 O conhecimento ecológico é importante para revelar a consciência ambiental de pessoas, refletindo em ações para conservação no meio ambiente onde vivem. No presente estudo foi avaliado o conhecimento de moradores sobre frugivoria por aves em fragmentos da restinga, um ecossistema ameaçado pela crescente ocupação humana. Entrevistas semi-estruturadas foram aplicadas para 73 moradores em dois bairros da cidade de Itanhaém, litoral sul do estado de São Paulo. A maioria das respostas evidenciou pouca observação de frugivoria por aves em plantas nativas. Os moradores demonstraram dificuldades na identificação de aves frugívoras e na discriminação de plantas nativas da região. No entanto, possuíam conhecimento lógico de processos ecológicos envolvendo as interações entre aves e plantas. A ave popularmente conhecida como tiê-sangue (Ramphocelus bresilius e a palmeira jerivá (Syagrus romanzoffiana foram mais frequentemente citadas. Essas espécies são facilmente encontradas na restinga da região e apresentam características estruturais que atraíram a atenção das pessoas tais como cor vermelho intenso e elevada altura, respectivamente. Dessa forma, as epécies citadas podem ser utilizadas para trabalhos iniciais envolvendo identificação de aves e plantas, e para o aprofundamento da educação ambiental dos moradores locais.

  8. Restos de aves en los yacimientos prehistóricos vascos. Estudios realizados.

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    Miguel Elorza

    1990-01-01

    Full Text Available En el trabajo se indican los estudios realizados, hasta el momento, de arqueozoología de aves en el País Vasco. Se hace especial referencia a los trabajos más antiguos y se presentan varias avifaunas, algunas inéditas, de forma cualitativa.

  9. Quantifying Streamflow Variations in Ungauged Lake Basins by Integrating Remote Sensing and Water Balance Modelling: A Case Study of the Erdos Larus relictus National Nature Reserve, China

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    Kang Liang

    2017-06-01

    Full Text Available Hydrological predictions in ungauged lakes are one of the most important issues in hydrological sciences. The habitat of the Relict Gull (Larus relictus in the Erdos Larus relictus National Nature Reserve (ELRNNR has been seriously endangered by lake shrinkage, yet the hydrological processes in the catchment are poorly understood due to the lack of in-situ observations. Therefore, it is necessary to assess the variation in lake streamflow and its drivers. In this study, we employed the remote sensing technique and empirical equation to quantify the time series of lake water budgets, and integrated a water balance model and climate elasticity method to further examine ELRNNR basin streamflow variations from1974 to 2013. The results show that lake variations went through three phases with significant differences: The rapidly expanding sub-period (1974–1979, the relatively stable sub-period (1980–1999, and the dramatically shrinking sub-period (2000–2013. Both climate variation (expressed by precipitation and evapotranspiration and human activities were quantified as drivers of streamflow variation, and the driving forces in the three phases had different contributions. As human activities gradually intensified, the contributions of human disturbances on streamflow variation obviously increased, accounting for 22.3% during 1980–1999 and up to 59.2% during 2000–2013. Intensified human interferences and climate warming have jointly led to the lake shrinkage since 1999. This study provides a useful reference to quantify lake streamflow and its drivers in ungauged basins.

  10. Aves ocasionales en la Sabana de Bogotá y las Lagunas de Fúquene y de Tota

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    Borrero José Ignacio

    1947-12-01

    Full Text Available En números anteriores de esta misma revista publiqué algunas listas preliminares anotando la presencia ocasional de ciertas aves en la Sabana de Bogotá y la Laguna de Fúquene. A continuación hago mención de otras especies que he encontrado en las mismas localidades o también en la Laguna de Tota, Boyacá, a 3015 metros de altitud. Por considerarlo de importancia desde el punto de vista de la distribución geográfica, doy también datos referentes a la presencia de un ave migratoria norteamericana (Colymbus niqricollis californicus en la Laguna de Tota.

  11. Mis motiveerib Eesti, Soome ja Tšehhi õpetajaid? / Ave Abroi ; kommenteerinud Kertu Laanesoo

    Index Scriptorium Estoniae

    Abroi, Ave

    2009-01-01

    Artikkel on ilmunud Ave Abroi Tartu Ülikooli Euroopa Kolledžis 2008. aastal kaitstud magistritöö "Õpetajate motiveerimise võimalused Euroopa Liidus Eesti, Tšehhi ja Soome näitel" põhjal. Kommenteerib Audentese erakooli inglise keele õpetaja Kertu Laanesoo

  12. A advertência poética de Hilda Hilst em As aves da noite

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    Rubens da Cunha

    2017-01-01

    Full Text Available Entre 1967 y 1969, Hilda Hilst escribió ocho piezas de teatro, entre ellas, As aves da noite, en la cual relata los últimos momentos de seis prisioneros en la celda del hambre, en un campo de concentración nazi. En este artículo, analizamos As aves da noite como una pieza de advertencia sobre el terror impuesto por cualquier estado totalitario, no solamente el instaurado por el nacionalsocialismo alemán. El análisis fue fundamentado, entre otros pensadores, en Alain Badiou, para quien el siglo XX no ha cumplido la promesa de la modernidad y la vida y por el contrario solamente he cumplido su destino y su designio positivo a través del terror. Nos apoyamos en las ideas de Hannah Arendt para analizar el odio y la violencia de los estados totalitarios.

  13. Diets of nesting laughing gulls (Larus atricilla) at the Virginia Coast Reserve: observations from stable isotope analysis

    Science.gov (United States)

    Knoff, A.J.; Macko, S.A.; Erwin, R.M.

    2001-01-01

    Food web studies often ignore details of temporal, spatial, and intrapopulation dietary variation in top-level consumers. In this study, intrapopulation dietary variation of a dominant carnivore, the Laughing Gull (Larus atricilla), was examined using carbon, nitrogen, and sulfur isotope analysis of gull tissues as well as their prey (fish, invertebrates, and insects) from the Virginia Coast Reserve estuarine system. As earlier traditional diet studies found evidence of individual dietary specialization within gull populations, this study used stable isotope analysis to assess specialization in a coastal Laughing Gull population. Specifically, blood, muscle, and feather isotope values indicated significant intrapopulation dietary specialization. Some gulls relied more heavily on estuarine prey (mean blood δ13C = -17.5, δ15N = 12.6, and δ34S = 9.3), whereas others appeared to consume more foods of marine origin (mean blood δ13C = -19.4, δ15N = 14.8, and δ34S = 10.4). It is important to account for such dietary variability when assessing trophic linkages in dynamic estuarine systems.

  14. Nuevos registros de aves en el bosque mesófilo de montaña del noreste de Hidalgo, México

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    Miguel Angel Martínez-Morales

    2015-06-01

    Full Text Available Se reportan nuevos registros y ampliaciones en el área de distribución de Harpagus bidentatus, Glaucidium sanchezi, Attila spadiceus, Cyanolyca nana, Oreoscoptes montanus y Peucedramus taeniatus. Estas seis especies de aves fueron registradas en el bosque mesófilo de montaña del estado de Hidalgo, México. Dos de estas especies (G. sanchezi y C. nana son especies de distribución restringida, lo que eleva a tres el número de especies de distribución restringida en la zona. Esto enfatiza la importancia de esta región en la conservación de la diversidad de aves. Se discuten las implicaciones de estos nuevos registros en la obtención de inventarios completos de la avifauna de la región y en la conservación de su diversidad de aves.

  15. Variation in immune parameters and disease prevalence among Lesser Black-backed Gulls (Larus fuscus sp. with different migratory strategies.

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    Elena Arriero

    Full Text Available The ability to control infections is a key trait for migrants that must be balanced against other costly features of the migratory life. In this study we explored the links between migration and disease ecology by examining natural variation in parasite exposure and immunity in several populations of Lesser Black-backed Gulls (Larus fuscus with different migratory strategies. We found higher activity of natural antibodies in long distance migrants from the nominate subspecies L.f.fuscus. Circulating levels of IgY showed large variation at the population level, while immune parameters associated with antimicrobial activity showed extensive variation at the individual level irrespective of population or migratory strategy. Pathogen prevalence showed large geographical variation. However, the seroprevalence of one of the gull-specific subtypes of avian influenza (H16 was associated to the migratory strategy, with lower prevalence among the long-distance migrants, suggesting that migration may play a role in disease dynamics of certain pathogens at the population level.

  16. Prava trećih država u gospodarskom pojasu obalne države

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    Marina Vokić Žužul

    2003-12-01

    Full Text Available Predmet ovoga rada je analiza prava koja u gospodarskom pojasu obalne države mogu ostvarivati sve obalne i neobalne države. uz detaljan prikaz pravnog uređenja materije u odredbama Konvencije o pravu mora iz 1982., razmatraju se i vladajuća gledišta međunarodnopravne doktrine te rješenja u zakonodavstvima pojedinih zemalja. Posebna pozornost je posvećena ostvarivanju tuh prava u potencijalnom hrvatskom gospodarskom pojasu, prvenstveno mogućim zahtjevima od strane susjednih neobalnih država i država u nepovoljnom geografskom položaju. Sva pitanja razmatrana u ovom radu upućuju na zaključak da ispunjavanje dužnosti prema drugim državama u budućem gospodarskom pojasu RH ne bi trebalo imati utjecaja na donošenje odluke o njegovom proglašenju.

  17. Estudo da eficácia de espuma para a depopulação de aves para situações de emergência sanitária

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    Masaio Mizuno Ishizuka

    2011-04-01

    Full Text Available São inúmeras as dificuldades observadas na depopulação de elevado número de aves e é importante proceder-se à depopulação no interior do próprio aviário por questões de biossegurança do homem em casos de emergência sanitária causada por doenças de aves de elevada transmissibilidade, como a influenza aviária e a doença de Newcastle. Construiu-se o equipamento gerador de espuma para provocar a anóxia física em aves. Verificou-se a eficácia da espuma gerada através do uso de líquido detergente de alta expansão sobre o sacrifício de galinhas, avaliando-se os sinais sensoriais, tempo de morte, letalidade e lesões macro e microscópicas. Duzentas galinhas de postura com 78 semanas de idade foram divididas em dez grupos experimentais e submetidas a diferentes períodos de exposição à espuma, variando de 5min30s minutos a 8min15s minutos. A partir de seis minutos de exposição à espuma 100% das aves foram mortas. A presença de bolhas de espuma na cavidade oral e traqueia foram constatadas em todos os períodos de exposição à espuma, indicando a ocorrência de asfixia física. Congestão nas mucosas da cavidade oral e traqueia foram também observadas em todos os períodos de exposição. No exame histopatológico dos pulmões de todas as aves, observou-se a presença de congestão e hemorragia difusa de moderada intensidade. Nenhuma alteração foi observada na traqueia das aves. A eficácia da espuma como método de depopulação de aves foi constatada neste trabalho, podendo ser recomendada diante da necessidade de atendimento a emergências sanitárias.

  18. Diversidad de aves en el Centro Agropecuario Cotové, Santa Fe de Antioquia, Colombia

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    Caty Milena Martínez-Bravo

    2013-12-01

    Full Text Available En el Centro Agropecuario Cotové, en el municipio de Santa Fe de Antioquia (Colombia, se estudió la diversidad de aves utilizando las metodologías de puntos fijos de conteo y redes de niebla en cinco usos del suelo (Frutales, Sistema silvopastoril, Bosque secundario, Pastoreo con baja densidad de árboles y Pastos de corte, para analizar la influencia sobre la composición, riqueza y abundancia de la avifauna. Se registraron 6 633 individuos de 101 especies, de las cuales 11 especies son migratorias. En términos de abundancia, la mayoría de las especies fueron raras y pocas comunes. Los gremios alimenticios mejor representados fueron insectívoros y frugívoros. El índice de Shannon indica que el Sistema silvopastoril presenta los valores de diversidad alfa más altos y los frutales los más bajos. Los usos del suelo que compartieron más especies fueron sistema Silvopastoril y Pastoreo con baja densidad de árboles. La heterogeneidad ambiental del centro actúa de forma diferente para las especies, beneficia en su mayoría aves de baja y media especificidad de hábitat, y con preferencia de hábitats de borde y áreas abiertas, por lo que se deben implementar acciones de manejo dirigidas a la conservación de áreas de regeneración natural y conectividad entre usos del suelo, para que las poblaciones de especies de aves presentes en la zona puedan ser mantenidas en el tiempo.

  19. Ecología energética y nutricional en aves herbívoras pequeñas Energetics and nutritional ecology of small herbivorous birds

    Directory of Open Access Journals (Sweden)

    M. VICTORIA LOPEZ-CALLEJA

    2000-09-01

    Full Text Available La herbivoría en aves es una estrategia poco común. Solo el 3% de las aves actuales consumen plantas como fuente de energía. Tanto la composición química de las plantas como las restricciones asociadas al vuelo y digestión en aves pueden explicar el reducido número de pequeños endotermos, como las aves, que son herbívoros. Nuestro objetivo es explicar como las aves herbívoras satisfacen sus requerimientos nutricionales y energéticos cuando consumen dietas extremadamente pobres. Para lo cual nos centramos en Phytotoma rara (Phytotomidae, posiblemente el ave herbívora más pequeña. Phytotoma rara presenta numerosas características, como el rápido tiempo de transito, un efectivo rompimiento de la pared celular, y la alta y constante actividad de las enzimas digestivas, que le permiten disponer de nutrientes y energía celulares, sin los costos energéticos asociados al desarrollo de estructuras anatómicas de fermentación bacteriana o lentos tiempos de transito. Estos son posiblemente adaptaciones cruciales en la evolución de la herbivoría en aves pequeñas.Herbivory is a rare strategy in birds. Only 3% of extant birds exploit plant material as an energy source. Both plant chemical composition and bird constraints associated to flight and digestion may explain why herbivory is so scarce in small endotherms such as birds. Here we tackle the question of how herbivorous birds meet energy/nutrient requirements when feeding on extremely poor diets. We focus on Phytotoma rara (Phytotomidae, possibly the smallest herbivorous bird. From our mini-review we conclude that several features such as the fast passage rates, an effective physical breakdown of cell walls, and constant and high activities of digestive enzymes make available the highly nutritious cell contents to the small herbivore, without the energy costs of anatomical structures for bacterial fermentation or slow passage rates. These are possible crucial adaptations in the

  20. Cativeiro de aves como fonte de Cryptococcus neoformans na cidade de Campo Grande, Mato Grosso do Sul, Brasil

    Directory of Open Access Journals (Sweden)

    Filiú Wander Fernando de Oliveira

    2002-01-01

    Full Text Available Cryptococcus neoformans é a levedura capsulada causadora de criptococose em humanos e animais. A variedade neoformans, encontrada em diversas fontes ambientais, inclusive habitats de aves, é importante causa de mortalidade em indivíduos com AIDS em todo o Mundo. Contudo, ainda não há estudos sobre a sua ecologia na região Centro Oeste brasileira, onde há registro da ocorrência de casos humanos da micose. Para estudar fontes saprofíticas de C. neoformans, na cidade de Campo Grande, foram coletadas 20 amostras de excretas de aves em distintos ambientes. Suspensão das amostras em salina estéril foram semeadas em placas com meio ágar níger. Após 5 dias, colônias mucóides marrom-escuro foram subcultivadas para identificação através de provas morfofisiológicas, determinação da variedade e sorotipagem. C. neoformans var. neoformans sorotipo A foi isolado de 10 (50% das amostras, comprovando a ocorrência saprofítica de C. neoformans na cidade de Campo Grande, relacionada a habitat de aves em cativeiro.

  1. Aves de la confluencia del Caquetá y Orteguaza (Base aérea de Tres Esquinas Colombia

    Directory of Open Access Journals (Sweden)

    Dugand Armando

    1948-06-01

    Full Text Available Los autores enumeran 156 especies y subespecies de aves coleccionadas (410 ejemplares y 24 adicionales observadas entre el 11 de agosto y el 18 de septiembre de 1947 alrededor de la base aérea militar de Tres Esquinas, cerca de la confluencia de los ríos Caquetá y Orteguaza, en la Amazonia colombiana. Entre ellas, 10 se registran por primera vez en la avifauna de Colombia.  La introducción comprende una breve reseña geográfica (un mapa y ecológica (tres fotografías de la región, y algunos datos de interes ornitogeográfico acerca de la presencia allá de tres migratorias (2 del sur y 1 del norte y otras 28 aves que muy raras veces han sido señaladas en Colombia. Además de las diez aves nuevas para este país, se extiende hasta el Alto Caquetá el área de dispersión geográfica de otras 22 (12 colecionadas y 10 observadas que son mas o menos comunes en otras partes del territorio colombiano, pero que hasta ahora no habían sido señaladas en aquella región.

  2. Salmonella Enteritidis em Aves: Retrospectiva no Brasil

    Directory of Open Access Journals (Sweden)

    Silva EN

    2002-01-01

    Full Text Available Salmonella Enteritidis (SE emergiu como um grande problema avícola e de saúde pública no Brasil a partir de 1993. Os estudos epidemiológicos, incluindo a fagotipagem e sonda complementar de rRNA, sugerem a entrada de SE no Brasil via importação de material genético avícola contaminado, provavelmente no final da década de 80. As taxas de crescimento da avicultura brasileira na década de 90 criaram condições favoráveis para a manutenção e proliferação da SE nos plantéis avícolas. Além disso, o uso indiscriminado de antibióticos em aves, particularmente as quinolonas, encorajou a manutenção de lotes positivos para SE. As cepas de SE isoladas de aves têm mostrado alta sensibilidade aos antibióticos de uso comum em avicultura, incluindo as quinolonas. Entretanto, o aumento da resistência antimicrobiana e multirresistência tem sido observado em cepas de origem humana. Os últimos levantamentos realizados no ano de 2001 continuam a mostrar que a SE em materiais avícolas é o principal sorovar responsável pelas infecções humanas. Embora as carcaças de frangos apresentem altas taxas de contaminação por SE, são os ovos e seus derivados - principalmente a maionese caseira - os principais responsáveis pelos surtos humanos. O uso de vacinas específicas em poedeiras e reprodutoras tem se mostrado uma ferramenta auxiliar no controle de SE. O procedimento mais indicado para o controle de SE na avicultura está na aquisição e produção de lotes livres do agente. As rações e matérias primas de origem animal parecem não ser tão importantes na perpetuação do problema de SE, porém, os roedores parecem ser reservatórios ambientais importantes de SE em granjas contaminadas.

  3. Trophodynamics of inorganic pollutants in a wide-range feeder: The relevance of dietary inputs and biomagnification in the Yellow-legged gull (Larus michahellis)

    International Nuclear Information System (INIS)

    Ramos, Raül; Ramírez, Francisco; Jover, Lluís

    2013-01-01

    The suitability of sentinel species to monitor environmental pollution is often hampered by an insufficient knowledge on pollutant trophodynamics. We simultaneously evaluated the influence of individuals' trophic position (as revealed by δ 15 N values) and dietary exploitation of particular systems (using δ 13 C and δ 34 S as proxies) on inorganic pollutant concentrations measured on fledglings' feathers of a wide-range feeder, the Yellow-legged Gull (Larus michahellis), sampled at four locations throughout the Western Mediterranean. Concentrations of total Hg and Se in fledgling feathers (2.43 ± 1.30 and 1.16 ± 0.43 μg/g, respectively) were under the threshold points for deleterious effects on seabirds. On the contrary, alarming Pb concentrations were found in one colony (mean: 1.57 ± 2.46 μg/g, range: 0.16–12.13). With the exception of Pb, pollutant concentrations were positively influenced by consumption of marine resources (as suggested by the positive relationship with δ 34 S values), whereas trophic position played a minor role in determining pollutant body burdens. - Graphical abstract: Individual feeding behaviours in wide-range feeders may represent unavoidable knowledge for an appropriate understanding of contaminant acquisition, adding complexity to the study of the dynamic of contaminants throughout food chains. In this case study, pollutant body burden of Yellow-legged gull (Larus michahellis) chicks was highly influenced by dietary exposure, whereas the influence of trophic position was relatively low. Display Omitted Highlights: ► Diet origin (δ 34 S) and trophic position (δ 15 N) were tested relative to Hg, Se, and Pb levels. ► Hg and Se concentrations in gull feathers were highly influenced by δ 34 S signatures. ► Exploited habitat influenced pollutant levels to a greater extent than trophic position. ► Biomagnification processes contribute less to contamination exposure in wide-range feeders. - Pollutant body burden of a wide

  4. Estudo retrospectivo de afecções cirúrgicas em aves

    Directory of Open Access Journals (Sweden)

    Patrícia F. Castro

    2013-05-01

    Full Text Available Avaliaram-se retrospectivamente as cirurgias realizadas em aves no Serviço de Cirurgia de Pequenos Animais do Hospital Veterinário da Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, durante período de oito anos. De um total de 90 intervenções cirúrgicas para diagnóstico e/ou tratamento de afecções, 27 foram ortopédicas e 63 de tecidos moles. Quanto ao percentual de cirurgias ortopédicas realizadas segundo as diferentes ordens, observou-se: Psittaciformes 85,19%, Piciformes 7,41%, Anseriformes 3,70% e Falconiformes 3,70%. Para as de tecidos moles os Psittaciformes representaram 92,06%, Columbiformes 3,17%, Passeriformes 3,17% e Anseriformes 1,60%. Entre os tipos de afecções ortopédicas encontradas as fraturas apresentaram a maior ocorrência (88,90%, seguidas de luxação (3,70%, avulsão traumática de extremidade (3,70% e artrite/osteomielite (3,70%. Dentre as afecções cirúrgicas de tecidos moles as neoplasias apresentaram a maior ocorrência (30,15%, seguidas das neoformações cutâneas ou de anexos não neoplásicos (17,46%, neoformações cutâneas sem diagnóstico (7,94%, distocia (7,94%, fístula de papo (7,94%, hérnia abdominal (4,76%, sinusite (4,76%, gangrena de extremidade de membros (3,17%, perfuração de esôfago (3,17%, prolapso de cloaca (3,17%, "Necrose avascular de dígito" (1,59%, ferida na região da quilha (1,59%, perfuração de cavidade celomática (1,59%, neoformação em cavidade celomática sem diagnóstico (1,59%, corpo estranho em trato gastrointestinal (1,59% e otite (1,59%. A distribuição das afecções cirúrgicas segundo as espécies acometidas mostrou o "grupo dos papagaios", representado em sua maioria por espécies do gênero Amazona, como prevalente. O conhecimento das afecções cirúrgicas e espécies de aves mais acometidas acrescentam informações para aqueles que já atuam nesta área e servem como indicador de estudo para futuros cirurgiões de aves.

  5. AVE5026, a new hemisynthetic ultra-low-molecular-weight heparin for the prevention of venous thromboembolism in patients after total knee replacement surgery--TREK: a dose-ranging study

    DEFF Research Database (Denmark)

    Lassen, M R; Dahl, O E; Mismetti, P

    2009-01-01

    BACKGROUND: AVE5026 is a new hemisynthetic ultra-low-molecular-weight heparin, with a novel anti-thrombotic profile resulting from high anti-factor (F)Xa activity and residual anti-FIIa activity. AVE5026 is in clinical development for venous thromboembolism (VTE) prevention, a frequent complication....... The primary safety outcome was the incidence of major bleeding. RESULTS: The primary efficacy outcome was assessed in 464 patients. There was a significant dose-response across the five AVE5026 groups for VTE prevention (Pincidence of VTE ranging from 5.3% to 44.1% compared with 35...

  6. Waterbirds (other than Laridae nesting in the middle section of Laguna Cuyutlán, Colima, México

    Directory of Open Access Journals (Sweden)

    Eric Mellink

    2008-03-01

    Full Text Available Laguna de Cuyutlán, in the state of Colima, Mexico, is the only large coastal wetland in a span of roughly 1150 km. Despite this, the study of its birds has been largely neglected. Between 2003 and 2006 we assessed the waterbirds nesting in the middle portion of Laguna Cuyutlán, a large tropical coastal lagoon, through field visits. We documented the nesting of 15 species of non-Laridae waterbirds: Neotropic Cormorant (Phalacrocorax brasilianus, Tricolored Egret (Egretta tricolor, Snowy Egret (Egretta thula, Little Blue Heron (Egretta caerulea, Great Egret (Ardea alba, Cattle Egret (Bubulcus ibis, Black-crowned Nightheron (Nycticorax nycticorax, Yellow-crowned Night-heron (Nyctanassa violacea, Green Heron (Butorides virescens, Roseate Spoonbill (Platalea ajaja, White Ibis (Eudocimus albus, Black-bellied Whistling-duck (Dendrocygna autumnalis, Clapper Rail (Rallus longirostris, Snowy Plover (Charadrius alexandrinus, and Black-necked Stilt (Himantopus mexicanus. These add to six species of Laridae known to nest in that area: Laughing Gulls (Larus atricilla, Royal Terns (Thalasseus maximus, Gull-billed Terns (Gelochelidon nilotica, Forster’s Terns (S. forsteri, Least Terns (Sternula antillarum, and Black Skimmer (Rynchops niger, and to at least 57 species using it during the non-breeding season. With such bird assemblages, Laguna Cuyutlán is an important site for waterbirds, which should be given conservation status. Rev. Biol. Trop. 56 (1: 391-397. Epub 2008 March 31.Durante la prospección de la parte media de la Laguna Cuyutlán, una gran laguna costera en Colima, México, entre 2003 y 2006, documentamos la anidación de 15 especies de aves acuáticas que no pertenecer a la familia Laridae: Phalacrocorax brasilianus, Egretta tricolor, Egretta thula, Egretta caerulea, Ardea alba, Bubulcus ibis, Nycticorax nycticorax, Nyctanassa violacea, Butorides virescens, Platalea ajaja, Eudocimus albus, Dendrocygna autumnalis, Rallus longirostris

  7. Parasitos de aves e mamíferos silvestres em cativeiro no estado de Pernambuco

    Directory of Open Access Journals (Sweden)

    Pauline Marie de Souza Santos

    2015-09-01

    Full Text Available Resumo: Os animais silvestres são hospedeiros de uma grande variedade de parasitos que podem interferir em sua conservação ex situ. O objetivo deste estudo foi identificar os parasitos gastrointestinais (PGI e ectoparasitos dos animais do Centro de Triagem de Animais Silvestres (CETAS do Instituto Brasileiro de Meio Ambiente e Recursos Naturais Renováveis (IBAMA de Recife, Pernambuco, além de determinar os aspectos do manejo em cativeiro que possam estar relacionados com os parasitos identificados. Foram coletados ectoparasitos e amostras fecais de 223 aves e mamíferos, as quais foram processadas pelos métodos: microscopia direta, flutuação e sedimentação. Helmintos e/ou protozoários foram detectados em 91 (40,8% amostras fecais, sendo 64 (70,3% de aves e 27 (29,7% de mamíferos. Ovos de Capillaria sp., Ascaridida, Spirurida e oocistos de Eimeria sp. foram detectados nas amostras fecais das aves, enquanto ovos de Trichuris trichiura, Strongyloides sp., Toxocara canis, Ancylostoma sp., Strongylida e oocistos de Coccídios foram encontrados nas amostras fecais de mamíferos. Os ectoparasitos identificados em aves foram Colpocephalum turbinatum, Kurodaia (Kurodaia fulvofasciata, Halipeurus sp., Naubates sp., Saemundssonia sp., Austromenopon sp., Paragoniocotes sp., Brueelia sp., Myrsidea sp. and Pseudolynchia sp., enquanto em mamíferos os ectoparasitos identificados foram Rhipicephalus sanguineus, Amblyomma varium, A. calcaratum, A. nodosum, Ornithodoros talaje e Ctenocephalides felis felis. A. calcaratum e O. talaje são registrados pela primeira vez em Pernambuco e T. tetradactyla é apresentado como novo hospedeiro de O. talaje. Nenhum dos animais estudados apresentou sinais clínicos em decorrência da infecção/infestação parasitária. Parasitos com potencial zoonótico como T. trichiura, Strongyloides sp., T. canis e Ancylostoma sp. foram identificados em primatas não humanos e carnívoros. Precárias condições estruturais

  8. Population trends and survival of nesting green sea turtles Chelonia mydas on Aves Island, Venezuela

    Science.gov (United States)

    Garcia-Cruz, Marco A.; Lampo, Margarita; Peñaloza, Claudia L.; Kendall, William L.; Solé, Genaro; Rodriguez-Clark, Kathryn M.

    2015-01-01

    Long-term demographic data are valuable for assessing the effect of anthropogenic impacts on endangered species and evaluating recovery programs. Using a 2-state open robust design model, we analyzed mark-recapture data from green turtles Chelonia mydas sighted between 1979 and 2009 on Aves Island, Venezuela, a rookery heavily impacted by human activities before it was declared a wildlife refuge in 1972. Based on the encounter histories of 7689 nesting females, we estimated the abundance, annual survival, and remigration intervals for this population. Female survival varied from 0.14-0.91, with a mean of 0.79, which is low compared to survival of other populations from the Caribbean (mean = 0.84) and Australia (mean = 0.95), even though we partially corrected for tag loss, which is known to negatively bias survival estimates. This supports prior suggestions that Caribbean populations in general, and the Aves Island population in particular, may be more strongly impacted than populations elsewhere. It is likely that nesters from this rookery are extracted while foraging in remote feeding grounds where hunting still occurs. Despite its relatively low survival, the nesting population at Aves Island increased during the past 30 years from approx. 500 to >1000 nesting females in 2009. Thus, this population, like others in the Caribbean and the Atlantic, seems to be slowly recovering following protective management. Although these findings support the importance of long-term conservation programs aimed at protecting nesting grounds, they also highlight the need to extend management actions to foraging grounds where human activities may still impact green turtle populations.

  9. Estudo retrospectivo de afecções cirúrgicas em aves

    OpenAIRE

    Castro, Patrícia F.; Fantoni, Denise T.; Matera, Julia M.

    2013-01-01

    Avaliaram-se retrospectivamente as cirurgias realizadas em aves no Serviço de Cirurgia de Pequenos Animais do Hospital Veterinário da Faculdade de Medicina Veterinária e Zootecnia, Universidade de São Paulo, durante período de oito anos. De um total de 90 intervenções cirúrgicas para diagnóstico e/ou tratamento de afecções, 27 foram ortopédicas e 63 de tecidos moles. Quanto ao percentual de cirurgias ortopédicas realizadas segundo as diferentes ordens, observou-se: Psittaciformes 85,19%, Pici...

  10. Saurios como predadores de ectoparásitos de aves guaneras

    OpenAIRE

    Pérez, José; Jahncke, Jaime

    1998-01-01

    Las altas densidades de las colonias favorecen el rápido contagio de ectopárasitos en las poblaciones de aves guaneras, destacando la garrapata Ornitodoros amblus, que en algunos casos llega a causar la muerte de los pichones. La lagartija Microlophus peruvianus ha sido introducida en las islas guaneras con la intención de reducir las poblaciones de garrapatas. En el presente estudio se observa que existe una predación sobre ectoparásitos por parte de las poblaciones de saurios en los tres lu...

  11. Aves acuáticas de la Laguna de Agua Dulce y el Estero El Ermitaño, Jalisco, México

    Directory of Open Access Journals (Sweden)

    Salvador Hernández Vázquez

    2005-06-01

    Full Text Available Se analizó la presencia y número de aves acuáticas, así como la distribución estacional y espacial de los diferentes grupos en la laguna de Agua Dulce y el estero El Ermitaño, Jalisco, México, entre diciembre de 1997 a noviembre de 1998. Considerando únicamente el mes de máxima abundancia de cada especie hubo 86 471 aves en ambos humedales (29 686 en Agua Dulce y 56 785 en El ermitaño, y una abundancia acumulada (suma de las abundancias mensuales de 179 808 aves (66 976 en Agua Dulce y 112 832 en Ermitaño. Se identificaron 87 especies de aves, de las cuales 78 especies estuvieron presentes en Agua Dulce y 73 especies en El Ermitaño. La riqueza y abundancia fueron influenciados por la llegada de aves migratorias por lo que el mayor número de especies e individuos se presentó durante el invierno. En general las aves mostraron preferencia por áreas someras, excepto las marinas que prefirieron áreas arenosas y protegidas por dunas como las que se encuentran en Agua Dulce. Los demás grupos como los patos y afines prefirieron las áreas con salinidades bajas, como las que se encuentran al sureste del estero El Ermitaño. La mayor abundancia de aves playeras fue observada en niveles de agua bajos, y al igual que las garzas se les observó con mayor frecuencia en sitios con salinidades altas e influenciados por las variaciones en las mareas, como los que se encuentran cerca de la boca-barra del ErmitañoWater birds from Agua Dulce lake and El Ermitaño estuary, Jalisco, Mexico. Waterbird abundance, and seasonal and spatial distribution, were studied in two natural water pools at Jalisco, México, from December 1997 through November 1998. Maximum monthly abundance in Agua Dulce lake and El Ermitaño estuary was 86 471 birds (29 686 in Agua Dulce and 56 785 in Ermitaño, with a total cummulative abundance of 179 808 individuals (66 976 in Agua Dulce and 112 832 in Ermitaño. A total of 87 waterbirds species were recorded, 78 in Agua Dulce

  12. Experimental Salmonella Gallinarum infection in light laying hen lines Infecção experimental por Salmonella Gallinarum de aves leves de postura comercial

    Directory of Open Access Journals (Sweden)

    Angelo Berchieri Júnior

    2000-03-01

    Full Text Available Although the epidemiology of fowl typhoid in chickens supposedly involves a vertical transmission stage, a previous work run by the authors has suggested that this did not happen in a commercial line of laying hens highly susceptible to systemic disease with Salmonella Gallinarum. A new experiment was carried out in two other lines of commercial layers, considerably more resistant than those used in the previous study. Clinical fowl typhoid was not observed, but Salmonella Gallinarum was isolated from the spleen and liver four weeks after infection and, sporadically, from the ovary.Estudo anterior, realizado pelos mesmos autores com aves consideradas susceptíveis ao agente do tifo aviário, sugeriu que a relação entre a bactéria e a aves restringe-se ao período da enfermidade. Neste trabalho avaliou-se a relação hospedeiro-parasita entre Salmonella Gallinarum e aves leves de postura comercial, consideradas mais resistentes ao tifo aviário. As aves não desenvolveram a doença clínica, mas a bactéria foi isolada do baço e do fígado quatro semanas após a infecção e, em algumas ocasiões, também do ovário.

  13. Muuseumihoone autorid : minevikuga tuleb silmitsi seista / Tsuyoshi Tane, Lina Ghotmeh, Dan Dorell ; interv. Ave Randviir

    Index Scriptorium Estoniae

    Tane, Tsuyoshi

    2006-01-01

    Eesti Rahva Muuseumi arhitektuurivõistluse võiduprojekti autorid Tsuyoshi Tane, Lina Ghometh ja Dan Dorell omavahelisest koostööst, võistlustööst, vastuseid kriitikale. Teistest premeeritud projektidest. Ave Randviiru kommentaar "Võidutöö teeb ajaloole psühhoanalüüsi"

  14. Aves acuáticas del estero El Salado, Puerto Vallarta, Jalisco

    Directory of Open Access Journals (Sweden)

    Fabio Germán Cupul Magaña

    2015-06-01

    Full Text Available El estero El Salado es un cuerpo costero único en la región de Bahía de Banderas, México, que se encuentra sometido a la fuerte presión del crecimiento urbano de la ciudad de Puerto Vallarta, Jalisco. Su evaluación como hábitat para la avifauna acuática puede contribuir al establecimiento de las bases técnicas para la toma de decisiones acertadas en el diseño de estrategias de conservación y explotación de sus hábitats. Con este fin, de junio de 1996 a mayo de 1997, se realizó una visita mensual al estero. En cada visita se realizaron dos transectos de 250 m de largo, de la boca a la cabeza del estero, de acuerdo al método modificado del censo de transecto en banda. Se determinaron 28 especies de aves acuáticas y se contabilizaron 1,304 individuos. De acuerdo con su presencia a lo largo del año, se registraron 16 especies residentes, 11 residentes de invierno y una migratoria. Los resultados ponen de manifiesto la importancia de la zona como espacio de sustentación alimenticia, de descanso y de anidación para aves acuáticas temporales y residentes.

  15. Ruumi kohta arvamuse avaldamiseks ei pea olema arhitekt / Katrin Koov, Ave Kongo ; intervjueerinud Merle Karro-Kalberg

    Index Scriptorium Estoniae

    Koov, Katrin, 1973-

    2016-01-01

    Erahuvikoolina tegutseva arhitektuurikooli eestvedamisel töötatakse välja ruumiõppe valikainemoodulit gümnaasiumile. Ruumiõppest räägivad arhitektide liidu president, arhitektuurikooli õpetaja Katrin Koov ja Saue gümnaasiumi kunstiõpetaja Ave Kongo

  16. Echinuria uncinata (Rudolphi (Nematoda, Acuariidae in Netta peposaca (Vieillot (Aves, Anatidae in South America Echinuria uncinata (Rudolphi (Nematoda, Acuariidae em Netta peposaca (Vieillot (Aves, Anatidae na América do Sul

    Directory of Open Access Journals (Sweden)

    Eliane F. da Silveira

    2006-06-01

    Ponta da Antena, Município de Santa Vitória do Palmar, Estado do Rio Grande do Sul, região Sul do Brasil e Alvear, Província de Corrientes, região Norte da Argentina. As amostras foram obtidas no período de 2003 a 2004. Imediatamente após o abate, cada ave foi congelada em gelo seco. As aves foram separadas por sexo, pesadas e medidas. O estado de maturidade de cada ave foi avaliado (juvenil ou adulto com base na presença ou ausência da bolsa de Fabricius. Os granulomas, contendo os nematóides, estavam situados na base do esôfago quase junto à junção com o proventrículo. Duas aves estavam positivas, com um (fistulado e dois granulomas, respectivamente. Uma das aves era proveniente do Brasil (pólo de invernia na planície costeira do Estado do Rio Grande do Sul. A outra da região Norte da Argentina, capturada em um dos pólos de nidificação, antes de empreender sua viagem em direção à costa brasileira ao longo de sua rota de migração. A prevalência da infecção foi de 3,8% e a intensidade média de infecção de 7,2. A morfometria de machos e de fêmeas permitiu a identificação dos espécimes como E. uncinata.

  17. Diversidad de insectos y aves insectivoras de sotobosque en hábitats pertubados de selva lluviosa tropical

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    Naranjo Luis Germán

    1997-11-01

    Full Text Available To examine variation in species composition, stability and diversity of insectivorous birds and their prey in understory habitats of disturbed rainforest, from March 1993 to May 1994 we measured structural variables of the vegetation and quantified bird and insect species richness and diversity at eight plots ranging from 0 to over 10 years of secondary succesion. Of all the vegetation variables, only canopy cover tended. to increase with forest age. Variation of DBH classes and total density of plants among plots explained changes in both insect richness and diversity. While variation in bird species richness and diversity among plots did not show significant trends, the abundance of insectivores was related both to foliage height diversitv and DBH diversity. Insect abundance explained both bird abundance and species richness, and insect richness was an adequate predictor of abundance of insectivorous birds. The polar coordinates of the study plots (Bray-Curtis ordination based on the abundances of insectivorous birds were inversely related to forest age.Para examinar la variación en abundancia y diversidad de aves insectívoras y de sus presas en sotobosque de selva lluviosa tropical perturbada, entre marzo de 1993 y mayo de 1994 medimos variables estructurales de la vegetación y cuantificamos la  abundancia, riqueza y diversidad de insectos y aves en ocho parcelas de 0 a más de 10 años de sucesión secundaria. Exceptuando la cobertura del dosel, que aumentó con la madurez del bosque, la vegetación no presentó tendencias relacionadas con el tiempo de regeneración del bosque. La variación en cuanto a tamaños de tallos (clases de DAP y a la densidad total de plantas entre parcelas estuvo relacionada con las diferencias de riqueza y diversidad de insectos. Aunque la variación en riqueza y diversidad de aves insectívoras no presentó tendencias significativas, su abundancia estuvo relacionada tanto con la diversidad de estratos

  18. Estudio de la fauna de aves de la cueva de Pico Ramos (Muskiz, Bizkaia.

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    P. Castaños

    1995-01-01

    Full Text Available Se estudian los restos de Aves de la cuenca de Pico Ramos. Destaca entre las especies halladas la presencia de Alca Gigante (Pinguinus impennis a cuya extinción y hallazgos holocenos se dedica especial atención. Se ofrecen datos osteométricos y biogeográficos de las restantes especies.

  19. P-gp activity is a critical resistance factor against AVE9633 and DM4 cytotoxicity in leukaemia cell lines, but not a major mechanism of chemoresistance in cells from acute myeloid leukaemia patients

    International Nuclear Information System (INIS)

    Tang, Ruoping; Legrand, Ollivier; Marie, Jean-Pierre; Cohen, Simy; Perrot, Jean-Yves; Faussat, Anne-Marie; Zuany-Amorim, Claudia; Marjanovic, Zora; Morjani, Hamid; Fava, Fanny; Corre, Elise

    2009-01-01

    AVE9633 is a new immunoconjugate comprising a humanized monoclonal antibody, anti-CD33 antigen, linked through a disulfide bond to the maytansine derivative DM4, a cytotoxic agent and potent tubulin inhibitor. It is undergoing a phase I clinical trial. Chemoresistance to anti-mitotic agents has been shown to be related, in part, to overexpression of ABC proteins. The aim of the present study was to investigate the potential roles of P-gp, MRP1 and BCRP in cytotoxicity in AVE9633-induced acute myeloid leukaemia (AML). This study used AML cell lines expressing different levels of P-gp, MRP1 or BCRP proteins and twenty-five samples from AML patients. Expression and functionality of the transporter protein were analyzed by flow cytometry. The cytotoxicity of the drug was evaluated by MTT and apoptosis assays. P-gp activity, but not MRP1 and BCRP, attenuated AVE9633 and DM4 cytotoxicity in myeloid cell lines. Zosuquidar, a potent specific P-gp inhibitor, restored the sensitivity of cells expressing P-gp to both AVE9633 and DM4. However, the data from AML patients show that 10/25 samples of AML cells (40%) were resistant to AVE9633 or DM4 (IC 50 > 500 nM), and this was not related to P-gp activity (p-Value: 0.7). Zosuquidar also failed to re-establish drug sensitivity. Furthermore, this resistance was not correlated with CD33 expression (p-Value: 0.6) in those cells. P-gp activity is not a crucial mechanism of chemoresistance to AVE9633. For patients whose resistance to conventional anthracycline AML regimens is related to ABC protein expression, a combination with AVE9633 could be beneficial. Other mechanisms such as microtubule alteration could play an important role in chemoresistance to AVE9633

  20. La diversidad en aves como factor determinante de la interacción entre ecosistemas del departamento del Huila

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    Alfredo Ramos Moreno

    2012-01-01

    Full Text Available En este estudio se realizó una descripción y análisis, en primera aproximación, de la oferta en diversidad de aves en el predio La Primavera, vereda Estambul, municipio de Teruel, departamento del Huila. A partir de la información generada, se procedió a comparar los resultados obtenidos con los reportes de aves inventariadas en el estudio GEMA (2006 desarrollado por el Instituto de Investigación de Recursos Biológicos Alexander Von Humboldt, en el Corredor Biológico entre los PNN Puracé y Cueva de Los Guácharos, con el fin de determinar la relación entre estos espacios naturales a partir del concepto de interacción entre ecosistemas, entendido como las relaciones de suministro, flujo e intercambio de materiales, energía o información, que para el casoque compete al estudio se refiere al movimiento de aves de un ecosistema a otro. El predio La Primavera, ubicado en el municipio de Teruel en el occidentedel departamento del Huila, a una altitud promedio de 900 m. s. n. m., perteneciente a la zona de vida de bosque seco tropical, sirvió de sitio de trabajo para la identificación de 32 especies de aves medianteobservación visual directa y captura con redes de niebla, de las cuales hubo dos familias que resultaron comunes a los dos estudios, pertenecientes a laThraupinae (tángaras y Tyrannidae (atrapamoscas, lo cual indica su capacidad de adaptación a pisos altitudinales diferentes. Caso particular merece la especie Tangara vitriolina (tángara rastrojera, la cual está considerada casi endémica, lo que se traduce en una alta vulnerabilidad y de especial cuidado yvigilancia. Se sugiere la realización de otras valoraciones similares en sitios que permitan establecer esta conexión ecosistémica con el fin de identificar aquellas especies que presenten características comunes para ecosistemas diferentes.

  1. EL LABORATORIO CLÍNICO EN HEMATOLOGÍA DE AVES EXÓTICAS

    OpenAIRE

    Gálvez Martínez, Carlos Fernando; Ramírez Benavides, Ginés Fernando; Osorio, José Henry

    2009-01-01

    El empleo de las técnicas de laboratorio en la práctica veterinaria, es una herramienta indispensable que aporta información valiosa en el momento de confirmar un diagnóstico. El hemograma es uno de los estudios de rutina con mayor importancia. Los parámetros normales en el hemograma, pueden ser un indicador del buen estado de salud del animal. Sin embargo, un hemograma normal, no excluye la posibilidad de que el ave sea un portador asintomático de entidades como la psitacosis, enfermedades v...

  2. Crescimento e absorção de nutrientes pelo feijoeiro adubado com cama de aves e fertilizantes minerais

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    Késia Silva Lourenço

    2013-04-01

    Full Text Available O feijoeiro é tradicionalmente cultivado em pequenas propriedades, onde é comum o uso de dejetos animais para adubação das culturas. Como é uma cultura de ciclo curto, os nutrientes precisam estar disponíveis logo após a germinação, o que nem sempre acontece quando a fertilização ocorre a partir de fertilizantes orgânicos. Neste trabalho, objetivou-se avaliar a eficiência de diferentes camas de aves em relação aos fertilizantes minerais na produção de matéria seca e na liberação de nutrientes para o feijoeiro, em casa de vegetação. O experimento foi conduzido em 2010, com amostras de um Latossolo Vermelho distroférrico com 16 g kg-1 de matéria orgânica, 1,9 e 84 mg dm-3 de P e K, respectivamente, e pH 6,0. Adotou-se delineamento experimental de blocos casualizados com 10 tratamentos e cinco repetições. As unidades experimentais foram constituídas por vasos com 14 dm³ de solo e cinco plantas de feijão, do cultivar BRS Requinte, durante 60 dias. Os tratamentos consistiram de cinco camas de aves compostas pelos seguintes materiais: palha de milho, bagaço de cana-de-açúcar, palha de pastagem natural, areia ou acícula de Pinus, formulações de nutrientes (NPK, NP, PK e NK e um testemunha, sem nenhum fertilizante. Os fertilizantes minerais com P proporcionaram maior produção de matéria seca da parte aérea (MSPA e de raízes (MSRA do feijoeiro do que as camas de aves, por causa da maior liberação para o solo de N e P disponíveis. Dentre as camas estudadas, aquela constituída por areia foi a que proporcionou os maiores valores de MSPA e de MSRA. As plantas fertilizadas com as camas de aves acumularam, em média, 58,6 % do N e 59,0 % do P, em relação às fertilizadas com os tratamentos que continham N e P minerais. A taxa de recuperação pelas plantas de N e K foi maior para os nutrientes aplicados na forma mineral do que na orgânica. As camas de aves podem ser utilizadas como fertilizantes para a cultura do

  3. Mortandad de aves marinas durante "El Niño 1997-98" en el litoral sur de San Juan de Marcona, Ica -Perú

    OpenAIRE

    Manuel Apaza; Aída Figari

    2014-01-01

    Entre agosto de 1997 y abril de 1998, se evaluó, al sur de la punta guanera de San Juan de Marcona, la mortandad de las poblaciones de aves marinas. Especies de alimentación exclusivamente pelágica y de distribución restringida al ámbito de la Corriente Peruana, como las aves guaneras Pelecanus thagus, Sula variegata y Phalacrocorax bougainvillii, el pingüino Spheniscus humboldti y el zarcillo Larosterna inca, mostraron una correlación significativa en el comportamiento mensual, relacionados ...

  4. Registros nuevos y notables de aves acuáticas en Querétaro y estados adyacentes

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    Rubén Pineda-López

    2013-01-01

    Full Text Available Como resultado de muestreos mensuales durante un año en embalses de Querétaro y zonas adyacentes de estados vecinos, así como de visitas a la Sierra de Lobos en Guanajuato, presentamos nuevos registros estatales de aves acuáticas para los estados de Querétaro (Bucephala albeola, Fregata magnificens, Numenius americanus, Hidalgo (Charadrius semipalmatus, Leucophaeus atricilla, Hydroprogne caspia y Guanajuato (Pelecanus occidentalis; además de registros notables de especies poco conocidas en zonas alejadas de las costas mexicanas. Estos registros muestran que los embalses de zonas semiáridas altas de México son más utilizados por especies poco frecuentes que lo que se ha pensado, y elevan a 70 las especies observadas en la zona semiárida de Querétaro, lo que confirma la importancia de los cuerpos de agua artificiales de esta región para la conservación de las aves acuáticas.

  5. Prevention of Salmonella infection by contact using intestinal flora of adult birds and/or a mixture of organic acids Controle da transmissão de Salmonella por contato entre aves de exploração comercial pelo uso de flora intestinal de aves adultas e/ou uma mistura de ácidos orgânicos

    Directory of Open Access Journals (Sweden)

    Gláucia Helaine de Oliveira

    2000-06-01

    Full Text Available This study was carried out to assess the ability of competitive exclusion and a mixture of organic acids to prevent Salmonella infection by contact between newly hatched chicks. A bird infected with Salmonella was placed in a box containing non-infected birds, previously treated with a broth culture of faeces of adult birds (CE and/or a mixture of organic acids. The number of Salmonella organisms in the caeca of the contact birds was estimated at 4 and 8 days post-challenge. The birds were infected with Salmonella Typhimurium, Salmonella Enteritidis (both repeated 5 times, Salmonella Agona and Salmonella Infantis (3 repetitions. The same approach was used to test the mixture of organic acids alone. In this case the birds received feed containing 0.8% of a mixture of formic acid (70% and propionic acid (30%. Also, a third trial was carried out with birds inoculated with the broth culture of faeces and fed with feed containing the mixture of organic acids. Appropriate controls were included. Whereas the birds from the control groups and the groups treated with the mixture of organic acids were heavily infected with Salmonella, those pre-treated with CE or CE plus the mixture of organic acids had no viable cells per gram of caecal contents.O presente trabalho avaliou a prevenção da disseminação de quatro sorotipos de Salmonella, de interesse em avicultura e saúde pública (Salmonella Typhimurium, Salmonella Agona, Salmonella Infantis e Salmonella Enteritidis, entre aves recém-nascidas, com o intuito de diminuir a disseminação de salmonelas em rebanhos avícolas por aves que contraíram a infecção pela via vertical. Analisou-se experimentalmente a administração de microbiota intestinal de aves adultas em aves recém-nascidas, a incorporação de uma mistura de ácidos orgânicos na ração e a associação desses dois tratamentos, em grupos onde colocou-se uma ave infectada, para provocar a transmissão por contato. A microbiota

  6. Contenido de metales pesados en hígado y plumas de aves marinas afectadas por el accidente del "Prestige" en la costa de Galicia

    OpenAIRE

    M Pérez López; F Cid Galán; D Hernández Moreno; AL Oropesa Jiménez; AM López Beceiro; LE Fidalgo Álvarez; F Soler Rodríguez

    2005-01-01

    Las aves marinas son organismos situados en la cumbre de las cadenas alimentarias oceánicas, lo que permite su empleo en programas de biomonitorización para evaluar el efecto de los más diversos contaminantes sobre estos sensibles ecosistemas. En el presente trabajo se han analizado las concentraciones de distintos metales pesados (Pb, Zn, Cd y Cu) en hígado y plumas de tres especies de aves marinas (arao, frailecillo y alca) directamente afectadas por el vertido de crudo...

  7. Factores técnicos y ambientales implicados en la electrocución de aves en los tendidos eléctricos

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    Izquierdo Rosigue, A.

    1997-10-01

    Full Text Available Technical and environmental factors responsible of bird electrocution have been analyzed in low and medium tension power lines in a bird important area placed in the south of Alicante province (SE Spain. One hundred eighty six dead birds (119 birds of prey have been located in 182 poles inspected. Most species are legally protected and some are in jeopardy. Some pole types with suspended insulators have caused the same number of victims than poles with rigid insulators. Poles with rigid insulators in two levels produce more accidents than poles with one level. A different pole use according to the habitat has been observed. Birds of prey avoid poles in cultures, in the vicinity of roads and in flatlands or in hill tops. Furthermore, more electrocutions occur near bath zones. Poles in high places and located near to human altered habitats, where feeding is easy, are preferred by remainder birds.

    Se analizan los factores técnicos y ambientales responsables de la electrocución de aves en tendidos de media y baja intensidad -situados en un área con una valiosa población de aves- en el sur de la provincia de Alicante. Se han localizado 186 aves muertas (119 rapaces en 182 postes visitados. La mayoría han sido especies protegidas, encontrándose, algunas de ellas, especialmente amenazadas. Los resultados muestran que algunos tipos de poste, con aisladores suspendidos, provocan un número de accidentes similar a otros tipos de postes con aisladores rígidos. Los postes con aisladores rígidos en dos planos producen más víctimas que los que presentan un único plano. Se observa que las aves realizan un uso diferente del poste en función del hábitat que lo rodea. Las rapaces evitan los postes situados sobre cultivos, los más próximos a las carreteras y los ubicados en zonas llanas o en las partes más altas de las laderas. Se encuentran más rapaces electrocutadas en aquellos postes próximos a zonas de baño. Para el resto de aves los

  8. Checklist das aves do Estado do Mato Grosso do Sul, Brasil

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    Alessandro Pacheco Nunes

    Full Text Available RESUMO Em contraste com vários outros estados brasileiros, apenas recentemente o Mato Grosso do Sul iniciou o inventário organizado de sua avifauna. Relacionamos 630 espécies de aves para o Mato Grosso do Sul, pertencentes a 26 ordens e 74 famílias, que corresponde a 34% da avifauna ocorrente no Brasil. Cerca de 90% dessas espécies apresentam registros comprobatórios de ocorrência no estado conforme as normas propostas pelo CBRO. As demais ainda aguardam documentação comprobatória adequada. Quarenta e cinco espécies foram incluídas na lista terciária por apresentarem problemas de documentação comprobatória devido à ausência de circunstanciação e distribuição incompatível. A grande diversidade de fitofisionomias e paisagens sob influência dos biomas Cerrado, Pantanal, Chaco, Bosques Chiquitanos e Mata Atlântica são responsáveis em parte, pela diversidade de espécies ocorrentes no Mato Grosso do Sul. No entanto, várias dessas fitofisionomias e paisagens já foram suprimidas e/ou alteradas pela pecuária e principalmente monoculturas ( Pinus, Eucalyptus e cana-de-açúcar. Trinta e sete espécies de aves ocorrentes no estado encontram-se presentes em listas de espécies ameaçadas de extinção em âmbito global e/ou nacional. Ainda existem grandes lacunas de conhecimento sobre a avifauna sul-matogrossense, notadamente no Pantanal do Paiaguás e em regiões limítrofes com o estado de Goiás e países como Paraguai (Chaco e a Bolívia (Bosques Chiquitanos. Instituições como Embrapa Pantanal e Universidade Federal de Mato Grosso do Sul, bem como o trabalho de consultores ambientais e observadores de aves foram relevantes no avanço do conhecimento sobre a avifauna no estado. Grande parte dos museus institucionais no exterior abriga exemplares coletados no Mato Grosso do Sul, dentre os quais se destacam o Museum of Comparative Zoology (Cambridge, EUA, o American Museum of Natural History (Nova York, EUA, o The Field

  9. Polychlorinated camphenes (toxaphenes), polybrominated diphenylethers and other halogenated organic pollutants in glaucous gull (Larus hyperboreus) from Svalbard and Bjoernoeya (Bear Island)

    International Nuclear Information System (INIS)

    Herzke, Dorte; Gabrielsen, G.W.; Evenset, Anita; Burkow, I.C.

    2003-01-01

    PCBs and p,p'-DDE constituted 90% of contaminants found. - The levels of polychlorinated camphenes (toxaphenes) were investigated in liver samples from 18 glaucous gulls (Larus hyperboreus) from Bjoernoeya (74 deg. N, 19 deg. E) and four individuals from Longyearbyen (78 deg. N, 15 deg. E). Additionally brominated flame retardants (BFRs), PCBs and chlorinated pesticides were investigated in liver and intestinal contents of 15 of the glaucous gulls from Bjoernoeya. Of the analysed BFRs only 2,2',4,4'-tetra- and 2,2',4,4',5-pentabrominated diphenylethers (PBDE 47 and 99) could be detected. The concentrations ranged between 2 and 25 ng/g ww. In addition, high resolution measurements with GC/HRMS revealed the existence of several, not quantified, PBDEs and polybrominated biphenyls (PBBs) congeners in the samples. B9-1679 and B8-1413 were the dominating toxaphenes with median concentrations of 8 and 15 ng/g ww. Concentrations of toxaphenes and PBDEs were up to 100-times lower than the concentrations of PCB and some of the pesticides. PCB and p,p'-DDE constituted 90% of the contaminants found

  10. Dos nuevos registros de piojos masticadores (Phthiraptera: Ischnocera: Philopteridae) sobre Leptotila megalura (Aves: Columbidae) en la Argentina

    OpenAIRE

    Leonor GUARDIA

    2008-01-01

    Dos especies de piojos masticadores (Phthiraptera: Ischnocera: Philopteridae), Physconelloides ceratoceps Ewing y Columbicola gracilicapitis Carriker, son registradas por primera vez sobre Leptotila megalura Sclater & Salvin (“yerutí yungueña”) (Aves: Columbidae). Además, C. gracilicapitis es citada por primera vez para la Argentina.

  11. Parámetros reproductores de la gaviota patiamarilla Larus michahellis lusitanius Naumann, 1840 en Gipuzkoa

    Directory of Open Access Journals (Sweden)

    ARAIZAGA, J., ALDALUR, A., CUADRADO, J.F., DIEZ, E., GOIKOETXEA, J., HERRERO, A., JAUREGI, J.I., LASO, M., SANCHEZ, J.M.

    2012-01-01

    Full Text Available El objetivo del presente artículo es estudiar la reproducción de la gaviota patiamarilla Larus michahellis lusitanius Naumann, 1840 en Gipuzkoa. En particular, analizamos (1 el tamaño de puesta (número de huevos/nido, (2 la fecha de eclosión, (3 el número de huevos eclosionados/nido y (4 la proporción de huevos eclosionados en relación al número de huevos en el nido, considerando dos zonas que, a priori, presentan diferente tipo de sustrato de nidificación. Para ello, durante un periodo de 40 días (16.05.201124.06-2011 la colonia de Ulia se visitó a diario. En promedio, se registró un tamaño de puesta de 3 huevos/nido, un número de huevos eclosionados de 3/nido y un porcentaje de eclosión de 88,4%. La fecha media de eclosión sucedió en la segunda quincena de Mayo. Asimismo, se registraron algunas diferencias entre las dos zonas en que se dividió la colonia (tamaño de puesta inferior y porcentaje de huevos eclosionados superior en una zona que presentó más roca y vegetación de mayor porte en relación a otra zona con menos rocas así como más hierba. Discutimos esto en un contexto de zonificación de la colonia de estudio en el marco de áreas de carácter óptimo o subóptimo en términos reproductivos.

  12. Heterospecific sociality of birds on beaches from southeastern Brazil

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    César Cestari

    2009-12-01

    Full Text Available Studies on the sociality of heterospecific assemblages of birds have promoted a greater understanding of the types of interactions and survivorship between coexisting species. This study verified the group compositions in bird assemblages and analyzed the sociality of migratory and resident species on sandy beaches of southeastern Brazil. A transect was established on the median portion of beaches and all the groups of bird species (monospecific, heterospecific and solitary individuals were registered four days per month from November 2006 to April 2007. The sociality of each species was calculated by its frequency in heterospecific groups, its proportional number of contacts with other species in heterospecific groups, and the number of species that it associated with. Semipalmated Sandpiper Calidris pusilla (Linnaeus, 1766 and Semipalmated Plover Charadrius semipalmatus Bonaparte, 1825 (both migratory had the highest degree of sociality and did not show a preference to associate with either residents or migratory species. Sanderling Calidris alba (Pallas, 1764 (migratory occupied the third position in the sociality rank and associated with migratory species frequently. Southern Caracara Carara plancus (Miller, 1777 and Black Vulture Coragyps atratus (Beschstein, 1793 (both resident were uniquely found among heterospecific groups with necrophagous and resident species. Kelp Gull Larus dominicanus Lichtenstein, 1823 (resident associated more frequently with resident species. The sociality in assemblages of birds may promote advantages such as an increased collective awareness in dangerous situations and indication of sites with abundant food sources.

  13. Tendencia poblacional en tres colonias de gaviota patiamarilla Larus michahellis Naumann, 1840 en Gipuzkoa: 2000-2013

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    Arizaga, J., Aldalur, A., Herrero, A.

    2014-01-01

    Full Text Available En este trabajo se analiza la evolución de la población de gaviota patiamarilla Larus michahellis Naumann, 1840 en Gipuzkoa, con el fin de determinar si esta población ha aumentado o no durante los últimos años. Se desarrolla un modelo de crecimiento poblacional a partir de datos de censos llevados a cabo en tres colonias de referencia (Ulia-Faro, Santa Clara y Geteria, para el periodo 2000-2013, mediante el programa TRIM. La población estudiada ha pasado de 354 parejas (pp. en 2000 a 299 pp. en 2013. Observamos un ajuste malo de nuestros modelos (modelo de crecimiento nulo y modelo que estima un cambio log-lineal de la población a los datos que, no obstante, tanto para todas las colonias como para cada una de las colonias por separado, el modelo que estima un cambio log-lineal se ajusta mejor a los datos. Globalmente, la tendencia de las colonias es incierta (estable. Por colonias, las tendencias son dispares, lo cual indicaría dinámicas distintas. En el caso de Ulia la colonia disminuye durante el periodo de estudio, mientras que en Santa Clara la colonia es estable, y en Getaria aumenta. Globalmente, durante el periodo de estudio, el descenso de Ulia se habría compensado con las tendencias observadas en las otras dos colonias.

  14. Los Anhingidae (Aves: Suliformes) del Neógeno de América del Sur: sistemática, filogenia y paleobiología

    OpenAIRE

    Diederle, Juan M.

    2015-01-01

    Los Anhingidae están integrados por aves acuáticas conocidas vulgarmente como anhingas o biguá-víboras (darters o snakebirds en inglés), incluidas en el orden Suliformes. Estas aves llegan a pesar de 1,05-1,81 kg y no tienen dimorfismo sexual en tamaño. Son buenas voladoras y se caracterizan por alternar planeos prolongados y utilizar corrientes termales de aire ascendentes para elevarse. En tierra caminan torpemente, mientras que en el agua pueden nadar y bucear hábilmente propulsadas por su...

  15. Aves marinas de las costas e islas colombianas

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    Dugand Armando

    1947-06-01

    Full Text Available La lista de aves marinas que presento en este artículo se refiere en su mayor parte a especies que varios autores (véase Obras citadas han señalado en las costas e islas marítimas de Colombia o en las aguas extraterritoriales del Mar Caribe y del Océano Pacífico inmediatamente próximas a este país. Los ejemplares examinados que menciono fuera de tales referencias pertenecen casi todos a la colección ornitológica del Instituto de Ciencias Naturales y se señalan con las siglas ICN. Unos pocos son del museo de historia natural del Colegio Biffi, en Barranquilla, a cuyo custodio, el Hermano Hildeberto María, doy las gracias por haberme permitido examinarlos. Los que señalo con las palabras Exped. Askoy, seguidas de un numero (de la serie del American Museum of Natural History, forman parte de una interesante colección que nos envió en 1942 el doctor Robert Cushman Murphy, actual Director del Departamento de Aves del American Museum of Natural History, Nueva York. Estos fueron obtenidos por la expedición oceanográfica que, bajo la dirección del doctor Murphy, realizaron en la goleta "Askoy" varios miembros de aquel museo, acompañados por el Comandante Eduardo Fallon, de la Marina Colombiana, en aguas del Pacifico desde Panamá hasta el Ecuador. La Expedición de la "Askoy", que duró de febrero a mayo de 1941, exploró varias bahías y ensenadas en el litoral del Chocó y del Departamento del Valle, así como las islas de Gorgona y Gorgonilla al norte de la costa de Nariño, y el peñón inhabitado de Malpelo, posesión oceánica colombiana situada a unos 500 kilómetros al occidente de Buenaventura, en la latitud de 3° 59' 07" N. y la longitud de 81° 34' 27" W. de Greenwich, según posición determinada por Murphy (1936, I, p. 319, fig. 49 .

  16. Reporte de albinismo en Podiceps major, Pelecanus thagus y Cinclodes fuscus y revisión de aves silvestres albinas del Perú

    Directory of Open Access Journals (Sweden)

    Miriam Torres

    2013-03-01

    Full Text Available Reportamos observaciones de individuos albinos en tres especies de aves peruanas, el Zambullidor Grande (Podiceps major, el Pelícano peruano (Pelecanus thagus y el Churrete cordillerano (Cinclodes fuscus. Los individuos eran albinos parciales casi totalmente blancos, aparentemente adultos, que mostraron un comportamiento normal entre sus conespecíficos. La supervivencia después de varios meses pudo ser comprobada para el Pelícano peruano y el Churrete cordillerano. Debido a que la información publicada sobre albinismo en aves peruanas es muy escasa, se realizó una revisión y se recopilaron registros para otras nueve especies que son también presentados.

  17. Aportación a las patologías de aves en cautividad

    OpenAIRE

    Melián Melián, Ayose

    2015-01-01

    Por ello, el objetivo general de la presente tesis doctoral es contribuir a un mayor conocimiento de la Medicina y la Sanidad aviar de las especies en cautividad de una colección zoológica a través de la revisión de los casos clínicos, datos anatomopatológicos y análisis laboratoriales complementarios, Para ello, se emplearon los siguientes objetivos específicos: Objetivos específicos: 1.- Diagnóstico clínico y patológico de enfermedades en aves en cautividad. 2.- Determi...

  18. Naised käsu korras firmade juhatusse! Jah või ei? / Kairi Alt, Aveli Kippari, Karl Koort... [jt.

    Index Scriptorium Estoniae

    2011-01-01

    Küsimusele vastavad Columbus IT Partner Eesti AS personalijuht Kairi Alt, Stele ja Riveli omanik Aveli Kippari, AS Panaviatic'i turundusjuht Karl Koort, OÜ Tarkvara Tehnoloogia Arenduskeskuse tegevjuht Indrek Vainu, AS PricewaterhouseCoopers auditiosakonna direktor Eva Jansen, Kalev Chocolate Factory tootmisjuht Hardo Reinike

  19. Dos nuevos registros de piojos masticadores (Phthiraptera: Ischnocera: Philopteridae sobre Leptotila megalura (Aves: Columbidae en la Argentina

    Directory of Open Access Journals (Sweden)

    Leonor GUARDIA

    2008-01-01

    Full Text Available Dos especies de piojos masticadores (Phthiraptera: Ischnocera: Philopteridae, Physconelloides ceratoceps Ewing y Columbicola gracilicapitis Carriker, son registradas por primera vez sobre Leptotila megalura Sclater & Salvin (“yerutí yungueña” (Aves: Columbidae. Además, C. gracilicapitis es citada por primera vez para la Argentina.

  20. Radiological verification survey results at 14 Peck Ave., Pequannock, New Jersey (PJ001V)

    International Nuclear Information System (INIS)

    Rodriguez, R.E.; Johnson, C.A.

    1995-05-01

    The U.S. Department of Energy (DOE) conducted remedial action during 1993 at the Pompton Plains Railroad Spur and eight vicinity properties in the Wayne and Pequannock Townships in New Jersey as part of the Formerly Utilized Sites Remedial Action Program (FUSRAP). These properties are in the vicinity of the DOE-owned Wayne Interim Storage Site (WISS), formerly the W. R. Grace facility. The property at 14 Peck Ave., Pequannock, New Jersey is one of these vicinity properties. At the request of DOE, a team from Oak Ridge National Laboratory conducted an independent radiological verification survey at this property. The purpose of the survey, conducted between September and December 1993, was to confirm the success of the remedial actions performed to remove any radioactive materials in excess of the identified guidelines. The verification survey included surface gamma scans and gamma readings at 1 meter, beta-gamma scans, and the collection of soil and debris samples for radionuclide analysis. Results of the survey demonstrated that all radiological measurements on the property at 14 Peck Ave. were within applicable DOE guidelines. Based on the results of the remedial action data and confirmed by the verification survey data, the portions of the site that had been remediated during this action successfully meet the DOE remedial action objectives

  1. Radiological verification survey results at 3 Peck Ave., Pequannock, New Jersey (PJ002V)

    International Nuclear Information System (INIS)

    Rodriguez, R.E.; Johnson, C.A.

    1995-05-01

    The US Department of Energy (DOE) conducted remedial action during 1993 at the Pompton Plains Railroad Spur and eight vicinity properties in the Wayne and Pequannock Townships in New Jersey as part of the Formerly Utilized Sites Remedial Action Program (FUSRAP). These properties are in the vicinity of the DOE-owned Wayne Interim Storage Site (WISS), formerly the W.R. Grace facility. The property at 3 Peck Ave., Pequannock, New Jersey is one of these vicinity properties. At the request of DOE, a team from Oak Ridge National Laboratory conducted an independent radiological verification survey at this property. The purpose of the survey, conducted between September and December 1993, was to confirm the success of the remedial actions performed to remove any radioactive materials in excess of the identified guidelines. The verification survey included surface gamma scans and gamma readings at 1 meter, beta-gamma scans, and the collection of soil and debris samples for radionuclide analysis. Results of the survey demonstrated that all radiological measurements on the property at 3 Peck Ave. were within applicable DOE guidelines. Based on the results of the remedial action data and confirmed by the verification survey data, the portions of the site that had been remediated during this action successfully meet the DOE remedial action objectives

  2. Radiological verification survey results at 15 Peck Ave., Pequannock, New Jersey (PJ005V)

    International Nuclear Information System (INIS)

    Rodriguez, R.E.; Johnson, C.A.

    1995-05-01

    The US Department of Energy (DOE) conducted remedial action during 1993 at the Pompton Plains Railroad Spur and eight vicinity properties in the Wayne and Pequannock Townships in New Jersey as part of the Formerly Utilized Sites Remedial Action Program (FUSRAP). These properties are in the vicinity of the DOE-owned Wayne Interim Storage Site (WISS), formerly the W.R. Grace facility. The property at 15 Peck Ave., Pequannock, New Jersey is one of these vicinity properties. At the request of DOE, a team from Oak Ridge National Laboratory conducted an independent radiological verification survey at this property. The purpose of the survey, conducted between September and December 1993, was to confirm the success of the remedial actions performed to remove any radioactive materials in excess of the identified guidelines. The verification survey included surface gamma scans and gamma readings at 1 meter, beta-gamma scans, and the collection of soil and debris samples for radionuclide analysis. Results of the survey demonstrated that all radiological measurements on the property at 15 Peck Ave. were within applicable DOE guidelines. Based on the results of the remedial action data and confirmed by the verification survey data, the portions of the site that had been remediated during this action successfully meet the DOE remedial action objectives

  3. Radiological verification survey results at 17 Peck Ave., Pequannock, New Jersey (PJ006V)

    International Nuclear Information System (INIS)

    Rodriguez, R.E.; Johnson, C.A.

    1995-05-01

    The US Department of Energy (DOE) conducted remedial action during 1993 at the Pompton Plains Railroad Spur and eight vicinity properties in the Wayne and Pequannock Townships in New Jersey as part of the Formerly Utilized Sites Remedial Action Program (FUSRAP). These properties are in the vicinity of the DOE-owned Wayne Interim Storage Site (WISS), formerly the W.R. Grace facility. The property at 17 Peck Ave., Pequannock, New Jersey is one of these vicinity properties. At the request of DOE, a team from Oak Ridge National Laboratory conducted an independent radiological verification survey at this property. The purpose of the survey, conducted between September and December 1993, was to confirm the success of the remedial actions performed to remove any radioactive materials in excess of the identified guidelines. The verification survey included surface gamma scans and gamma readings at 1 meter, beta-gamma scans, and the collection of soil and debris samples for radionuclide analysis. Results of the survey demonstrated that all radiological measurements on the property at 17 Peck Ave. were within applicable DOE guidelines. Based on the results of the remedial action data and confirmed by the verification survey data, the portions of the site that had been remediated during this action successfully meet the DOE remedial action objectives

  4. Radiological verification survey results at 7 Peck Ave., Pequannock, New Jersey (PJ003V)

    International Nuclear Information System (INIS)

    Rodriguez, R.E.; Johnson, C.A.

    1995-05-01

    The US Department of Energy (DOE) conducted remedial action during 1993 at the Pompton Plains Railroad Spur and eight vicinity properties in the Wayne and Pequannock Townships in New Jersey as part of the Formerly Utilized Sites Remedial Action Program (FUSRAP). These properties are in the vicinity of the DOE-owned Wayne Interim Storage Site (WISS), formerly the W.R. Grace facility. The property at 7 Peck Ave., Pequannock, New Jersey is one of these vicinity properties. At the request of DOE, a team from Oak Ridge National Laboratory conducted an independent radiological verification survey at this property. The purpose of the survey, conducted between September and December 1993, was to confirm the success of the remedial actions performed to remove any radioactive materials in excess of the identified guidelines. The verification survey included surface gamma scans and gamma readings at 1 meter, beta-gamma scans, and the collection of soil samples for radionuclide analysis. Results of the survey demonstrated that all radiological measurements on the property at 7 Peck Ave. were within applicable DOE guidelines. Based on the results of the remedial action data and confirmed by the verification survey data, the portions of the site that had been remediated during this action successfully meet the DOE remedial action objectives

  5. Radiological verification survey results as 13 Peck Ave., Pequannock, New Jersey (PJ004V)

    International Nuclear Information System (INIS)

    Rodriguez, R.E.; Johnson, C.A.

    1995-05-01

    The US Department of Energy (DOE) conducted remedial action during 1993 at the Pompton Plains Railroad Spur and eight vicinity properties in the Wayne and Pequannock Townships in New Jersey as part of the Formerly Utilized Sites Remedial Action Program (FUSRAP). These properties are in the vicinity of the DOE-owned Wayne Interim Storage Site (WISS), formerly the W.R. Grace facility. The property at 13 Peck Ave., Pequannock, New Jersey is one of these vicinity properties. At the request of DOE, a team from Oak Ridge National Laboratory conducted an independent radiological verification survey at this property. The purpose of the survey, conducted between September and December 1993, was to confirm the success of the remedial actions performed to remove any radioactive materials in excess of the identified guidelines. The verification survey included surface gamma scans and gamma readings at 1 meter, beta-gamma scans, and the collection of soil and debris samples for radionuclide analysis. Results of the survey demonstrated that all radiological measurements on the property at 13 Peck Ave. were within applicable DOE guidelines. Based on the results of the remedial action data and confirmed by the verification survey data, the portions of the site that had been remediated during this action successfully meet the DOE remedial action objectives

  6. Manual de métodos de campo para el monitoreo de aves terrestres

    Science.gov (United States)

    C. John Ralph; Geoffrey R. Geupel; Peter Pyle; Thomas E. Martin; David F DeSante; Borja Milá

    1996-01-01

    El presente manual es una recopilación de métodos de campo para la determinación de índices de abundancia y datos demográficos de poblaciones de aves terrestres en una amplia variedad de hábitats. Está dirigido a biólogos, técnicos de campo, e investigadores de cualquier parte del Continente Americano. Los métodos descritos incluyen cuatro tipos de censos...

  7. New drive axles for hybrid applications in low-floor city busses. The electric axle AVE 130; Neue Antriebsachse fuer Hybridapplikationen in Niederflur-Stadtbussen. Die Elektroachse AVE 130

    Energy Technology Data Exchange (ETDEWEB)

    Solka, Ulrich [ZF Passau GmbH (Germany); Mueller, Axel M. [ZF Friedrichshafen AG (Germany)

    2009-07-01

    The contribution under consideration reports on the mechanically constructional structure of the electrically driven low-floor axle AVE 130 of ZF Friedrichshafen AG (Friedrichshafen, Federal Republic of Germany). The characteristics of the electric drive are presented with the particularities of the implemented asynchronous machine and the road performances which can be developed by a city bus using this axle. Also the system characteristics of a hybrid bus with serial hybrid drive system concerning to aggregate arrangement, mass balances and the interaction of the aggregates in the drive briefly are discussed. The results of numerical simulation regarding fuel saving potential in these systems round the remarks off.

  8. O ambiente virtual como interface na reabilitação pós-AVE: relato de caso

    Directory of Open Access Journals (Sweden)

    Silvia Leticia Pavão

    Full Text Available INTRODUÇÃO: O acidente vascular encefálico (AVE é um quadro neurológico agudo de repercussões amplas, que exige de suas vítimas programas de reabilitação desafiadores na promoção da função. Nesse contexto, a Realidade Virtual (RV é uma ferramenta de interface na reabilitação que pode gerar altos índices de motivação do paciente e permitir adaptação da terapia ao seu nível de função. OBJETIVO: Verificar o efeito da RV por meio de videogame sobre o controle postural de um indivíduo pós-AVE. MATERIAIS E MÉTODOS: Um indivíduo pós-AVE com um ano de lesão foi submetido a um protocolo de reabilitação física com videogame numa frequência de três vezes por semana por um período de 12 semanas. Anteriormente e após o programa foi realizada dinamometria por plataforma de força para análise de variáveis relacionadas ao centro de pressão (COP. RESULTADOS: Na reavaliação, observou-se que a amplitude de deslocamento médio-lateral (x aumentou 67% na condição de olhos abertos (OA e fechados (OF; amplitude anteroposterior (y aumentou 25 e 44% em OA e OF, respectivamente; área aumentou 109 e 141% em OA e OF; velocidade diminuiu 26 e 0,27% em OA e OF. CONCLUSÃO: A RV como interface na reabilitação possivelmente ampliou a exploração da base de suporte para manutenção da estabilidade, constituindo recurso adicional no tratamento desses indivíduos.

  9. INTERVENTION PHYSIOTHERAPY IN THE COMMUNITY: REPORT OF CASE OF A PATIENT WITH AVE

    Directory of Open Access Journals (Sweden)

    Flávia Nogueira e Ferreira

    2005-10-01

    Full Text Available The objective was verify the benefits of the physical therapist s intervention in the community in attention to AVE patient. This study describes a 74 year-old patient's case, feminine sex, attacked by AVE eight years ago, and possessesed the body s right side committed and was submit to physical therapeutics treatment once a week for four followed following. The patient is accompanied by PSF(Programa de Saúde da Família Inocoop neighborhood in the distrit of Jequié city, in the inclusion s areas of the Unidade de Saúde Padre Hilário Terrosi. She presented sinergismo flexor pattern and disagreements in the deambulação. We emphasized treatment the cinesioterapia with emphasis in PNF s technique, besides measures preventive to decrease complications of the hypertension, diabetes and falls. The movement of abduction foot s fingers was reestablished, as well as extension and deflection of fingers and ankle. In a significant less way, but representing patient's evolution, improvement her posture was gotten and march s aid, obtaining more safety. The patient woke up tocorporal conscience to hemiplégico side. The orientations for improvement of circulatory dynamics, hygiene, posture was valid. Conclusion: The physiotherapist's presence in the community becomes important because contribue for the promotion, prevention, recovery and rehabilitation obeing the beginnings of the current health s model and consequently promoting the improvement the life s quality of the population.

  10. Joomɨ fíivo gaaja kaatɨi aame - La ciencia de vida escrita en las aves. Cuarta parte: Kɨɨñu “Gallineta” (Crypturellus undulatus

    Directory of Open Access Journals (Sweden)

    Aniceto Nejedeka (Numeyɨ

    2014-09-01

    Full Text Available Texto bilingüe muinane-español sobre el ave kɨɨñu, “gallineta” (Crypturellus undulatus, elaborado por Aniceto Nejedeka a partir del conocimiento de los mayores de la etnia muinane. Este texto es la cuarta parte de un libro que hemos venido publicando por fascículos, titulado La ciencia de vida escrita en las aves. El muinane es una lengua de la familia lingüística bora.

  11. Ticks on birds caught on the campus of the Federal Rural University of Rio de Janeiro, Brazil Carrapatos em aves capturadas no campus da Universidade Federal Rural do Rio de Janeiro, Brasil

    Directory of Open Access Journals (Sweden)

    Ísis Daniele Alves Costa Santolin

    2012-09-01

    Full Text Available The prevalence of parasitic infections, particularly those caused by ectoparasites, may influence the biology and ecology of wild birds. The aim of this study was to investigate occurrences and identify the species of ticks collected from wild birds caught on the campus of the Federal Rural University of Rio de Janeiro. The birds were caught using mist nets between October 2009 and December 2010. In total, 223 birds were caught, represented by 53 species and 19 families in nine orders. Nineteen birds (n = 7 species were parasitized by immature ticks (prevalence of 8.5%. Forty-four ticks were collected, of which 23 were nymphs and 21 were larvae. There were associations between parasitism by ticks and non-Passeriformes birds, and between parasitism and ground-dwelling birds, which was possibly due to the presence (or inclusion among the captured birds of Vanellus chilensis (Charadriiformes: Charadriidae. All the nymphs collected were identified as Amblyomma cajennense. In general terms, we must emphasize that wild birds in the study area may play the role of dispersers for the immature stages of A. cajennense, albeit non-preferentially.A prevalência das infecções parasitárias e em particular, aquelas causadas por ectoparasitos, pode influenciar na biologia e ecologia das aves silvestres. O objetivo do estudo foi investigar a ocorrência e identificar as espécies de carrapatos coletadas em aves silvestres capturadas no campus da Universidade Federal Rural do Rio de Janeiro. As aves foram coletadas em rede-de-neblina durante o período de outubro de 2009 a dezembro de 2010. No total foram capturadas 223 aves representadas por 53 espécies, 19 famílias em 9 ordens. Parasitismo por formas imaturas de carrapatos, foram encontradas em 19 aves (n = 7 espécies correspondendo a uma prevalência de 8,5%. Foram coletados 44 carrapatos onde 23 estavam em estágio de ninfa e 21 em estágio de larva. Houve associação entre o parasitismo por carrapatos

  12. Two new records of chewing lice (Phthiraptera: Ischnocera: Philopteridae) on Leptotila megalura (Aves: Columbidae) from Argentina

    OpenAIRE

    Guardia, Leonor

    2008-01-01

    Dos especies de piojos masticadores (Phthiraptera: Ischnocera: Philopteridae), Physconelloides ceratoceps Ewing y Columbicola gracilicapitis Carriker, son registradas por primera vez sobre Leptotila megalura Sclater & Salvin ("yerutí yungueña") (Aves: Columbidae). Además, C. gracilicapitis es citada por primera vez para la Argentina.Two species of chewing lice (Phthiraptera: Ischnocera: Philopteridae), Physconelloides ceratoceps Ewing and Columbicola gracilicapitis Carriker are recorded for t...

  13. Nota sobre colisiones de aves en las ventanas de edificios universitarios en Puerto Vallarta, México

    Directory of Open Access Journals (Sweden)

    Fabio Germán Cupul-Magaña

    2015-06-01

    Full Text Available Esta nota presenta las observaciones de 15 colisiones de aves en ventanas de edificios de la Universidad de Guadalajara en Puerto Vallarta, Jalisco, México, a lo largo de 94 días de estudio (24 de enero al 27 de abril del 2003. Columbina passerina fue la especie que presentó el mayor número de fatalidades: ocho.

  14. Record of Spot-winged Pigeon Patagioenas maculosa (Aves: Columbidae in Santa Catarina state, southern Brazil.

    Directory of Open Access Journals (Sweden)

    Felipe Lohmann Arend

    2009-06-01

    Full Text Available We present the first record of the Spot-winged Pigeon Patagioenas maculosa (Aves: Columbidae for Santa Catarina, southern Brazil. One individual was observed on 10 September 2006 in an open area (cattle pasture and shrubby vegetation in the town of Anita Garibaldi (center-south of the state. We suggest that this punctual encounter is a result of the recent expansion of this species’ distribution due to landscape modification in the region.

  15. Nuevos registros de piojos (Insecta: Phthiraptera) en aves domésticas y ornamentales en Chile New records of lice (Insecta: Phthiraptera) from domestic and ornamental birds from Chile

    OpenAIRE

    D González-Acuña; J Lara; A Cicchino

    2009-01-01

    Por medio del examen del plumaje de aves domésticas y ornamentales en Chile se reconfirma la presencia de los phthiraptera Menopon gallinae, Goniodes gigas, Goniocotes gallinae y Menacanthus stramineus en la gallina doméstica, Gallus gallus domesticus y se registra además por primera vez en el país la especie Menacanthus pallidulus. En aves ornamentales se registran en pavo, Meleagris gallipavo, la especie M. stramineus, en pavo real, Pavo cristatus las especies Goniodes pavonis y Amrysidea m...

  16. Are camouflaged seeds less attacked by wild birds? Sementes camufladas são menos atacadas por aves silvestres?

    Directory of Open Access Journals (Sweden)

    Alexandre de Almeida

    2010-04-01

    Full Text Available Wheat, corn and rice crops in Brazil use seeds treated with systemic insecticide/nematicide carbofuran, mixed to rhodamine B red dye. Carbofuran is toxic and rhodamine B is attractive to wild birds that eat up these seeds, resulting in notable mortality during planting. A field experiment was performed in southeast Brazil to evaluate if camouflaged seeds would be less consumed by wild birds in comparison to commercial seeds with red-colored rhodamine B and aposematic blue seeds. Camouflaged seeds were less removed than seeds with rhodamine B and natural colors. The camouflaging was more effective in the presence of irregularities and litter. There was no removal of blue-colored seeds. As legislation requires treated seeds to receive a different color to avoid accidents with humans, camouflaging may be used as replacement of rhodamine B to reduce mortality rates of wild birds.Plantações de trigo milho e arroz no Brasil utilizam sementes tratadas com o inseticida e nematicida sistêmico carbofuran, associado ao corante vermelho rodamina B. O carbofuran é tóxico e a rodamina B é atrativa às aves silvestres, as quais consomem estas sementes, resultando em notável mortalidade durante o plantio. Um experimento realizado em campo agrícola no sudeste do Brasil mostrou que sementes camufladas foram menos removidas por aves silvestres do que sementes com rodamina B. A camuflagem foi potencializada em presença de irregularidades e serrapilheira no solo. Não houve remoção de sementes de cor azul, mas a formulação granular de cor azul tem causado mortalidade de aves nos USA e Canadá. Como sementes tratadas com agrotóxicos devem, de acordo com a legislação, receber coloração diferenciada para evitar acidentes com humanos, a camuflagem pode ser utilizada, substituindo a rodamina B.

  17. Hybridization among Arctic white-headed gulls (Larus spp.) obscures the genetic legacy of the Pleistocene

    Science.gov (United States)

    Sonsthagen, Sarah A.; Chesser, R. Terry; Bell, Douglas A.; Dove, Carla J.

    2012-01-01

    We studied the influence of glacial oscillations on the genetic structure of seven species of white-headed gull that breed at high latitudes (Larus argentatus, L. canus, L. glaucescens, L. glaucoides, L. hyperboreus, L. schistisagus, and L. thayeri). We evaluated localities hypothesized as ice-free areas or glacial refugia in other Arctic vertebrates using molecular data from 11 microsatellite loci, mitochondrial DNA (mtDNA) control region, and six nuclear introns for 32 populations across the Holarctic. Moderate levels of genetic structure were observed for microsatellites (FST= 0.129), introns (ΦST= 0.185), and mtDNA control region (ΦST= 0.461), with among-group variation maximized when populations were grouped based on subspecific classification. Two haplotype and at least two allele groups were observed across all loci. However, no haplotype/allele group was composed solely of individuals of a single species, a pattern consistent with recent divergence. Furthermore, northernmost populations were not well differentiated and among-group variation was maximized when L. argentatus and L. hyberboreus populations were grouped by locality rather than species, indicating recent hybridization. Four populations are located in putative Pleistocene glacial refugia and had larger t estimates than the other 28 populations. However, we were unable to substantiate these putative refugia using coalescent theory, as all populations had genetic signatures of stability based on mtDNA. The extent of haplotype and allele sharing among Arctic white-headed gull species is noteworthy. Studies of other Arctic taxa have generally revealed species-specific clusters as well as genetic structure within species, usually correlated with geography. Aspects of white-headed gull behavioral biology, such as colonization ability and propensity to hybridize, as well as their recent evolutionary history, have likely played a large role in the limited genetic structure observed.

  18. Medidas de vigilancia y contención de la influenza aviar en aves. Implicaciones para la salud pública

    Directory of Open Access Journals (Sweden)

    Alejandro Arteaga Rodríguez

    2006-01-01

    Full Text Available La Influenza Aviar es una enfermedad infecciosa que afecta principalmente a las aves, producida por virus de la gripe A, en la mayoría de los casos de baja patogenicidad. Debido a la rápida mutación de estos virus a formas altamente patógenas, el nivel de riesgo para la sanidad animal y la salud pública puede ser alto. Desde el año 2003, está teniendo lugar un brote de Influenza Aviar en aves producido por el subtipo H5N1 de alta patogenicidad, con transmisión y afectación humana y que presenta un riesgo potencial de producir una nueva pandemia de gripe. Ante estos brotes, es fundamental la colaboración entre los sectores implicados de la Sanidad Animal y Salud Pública que permita localizar con precisión las zonas de actividad de la enfermedad en los animales e intensificar en ellas la vigilancia de los casos en humanos. Las medidas de control de la enfermedad en animales deben ser compatibles con la reducción del riesgo de exposición humana. El objetivo de este artículo es hacer una revisión de las medidas generales desarrolladas contra la Influenza Aviar en aves, destacando los aspectos de coordinación y comunicación entre las autoridades de Sanidad Animal y Salud Pública, teniendo en cuenta que la legislación está sujeta a una renovación rápida y constante en consonancia con la dinámica de esta enfermedad.

  19. Rectification of radiation-induced damage in swiss albino mice by aloe vera leaf extracts (AVE)

    International Nuclear Information System (INIS)

    Gehlot, P.; Goyal, P. K.

    2007-01-01

    From the time immemorial man has been exposed to ionizing radiation from the environment in which he lives. Radiation protection concepts and philosophy have been evolving over the past several decades. Materials and Methods: The radioprotective of effect of Aloe vera leaf extract (1000 mg/kg b.wt. orally for 15 consecutive days) has been studied against 6 Gy of gamma radiation in the intestine of Swiss albino mice at various post irradiation intervals viz. 12 hours, 24 hours. and 3, 5, 10, 20 and 30 days. Results: Crypt survival, villus length, apoptic cells, mitotic figures and goblet cells in jejunum were studied after irradiation. Irradiation produced a significant decrease in crypt survival, mitotic figures and villus length; whereas goblet and apoptic cells showed a significant increase from sham irradiated animals. The major changes were observed on day 3 after irradiation. AVE pre-treated irradiated animals resulted in a significant increase in the number of crypt cells, mitotic figures and villus length; whereas the counts of apoptic and goblet cells showed a significant decrease from respective control group at all the autopsy intervals. Irradiated animals resulted in the elevation in lipid peroxidation and a reduction in glutathione activity. On contrary, AVE treatment before irradiation caused a significant depletion in lipid peroxidation and elevation in glutathione activity. Conclusion: The present study suggests the possible radioprotective ability of Aloe vera leaf extract

  20. Aves y endemismo en los bosques relictos de la vertiente occidental andina del norte del Perú y sur del Ecuador

    Directory of Open Access Journals (Sweden)

    Jeremy N. M. Flanagan

    2013-05-01

    Full Text Available Los bosques relictos de las vertientes occidentales de los Andes del norte del Perú y el sur del Ecuador forman parte de dos regiones, una la denominada región de endemismo tumbesina (caracterizada principalmente por bosques secos y otra, en altitudes mayores, la región de endemismo del sur de los Andes centrales (caracterizada por bosques nublados y páramo. La región tumbesina es reconocida por albergar gran cantidad de aves endémicas, muchas de las cuales están amenazadas, y también por el alto grado de deforestación y fragmentación de sus hábitats naturales. Este artículo presenta un resumen del estado de conservación de dichas aves y bosques, con recomendaciones para mejorar la conservación de los últimos bosques de la vertiente occidental.

  1. Ensambles de aves en agroecosistemas de la provincia de Buenos Aires: su relación con los patrones de uso de la tierra y las características del paisaje

    OpenAIRE

    Codesido, Mariano

    2010-01-01

    Entre enero de 2006 y enero de 2008 se estudió estacionalmente la estructura de los ensambles de aves en los agroecosistemas de las diferentes unidades ecológicas de la Región Pampeana comprendidas dentro de la provincia de Buenos Aires (Pampa Ondulada, Pampa Interior Plana, Pampa Interior Arenosa, Pampa Deprimida y Pampa Austral). Los objetivos generales de la tesis son: a) describir la estructura de los ensambles de aves terrestres de los agroecosistemas de la provincia de Buenos Aires, b) ...

  2. DETECCIÓN Y DIFERENCIACIÓN DE Mycoplasma gallisepticum Y Mycoplasma synoviae MEDIANTE LA TÉCNICA DE PCR A PARTIR DE HISOPOS TRAQUEALES DE AVES CON SÍNTOMAS RESPIRATORIOS

    Directory of Open Access Journals (Sweden)

    CESAR VENTURA

    2012-09-01

    Full Text Available Los micoplasmas son importantes patógenos en las aves por ser responsables de cuadros respiratorios que ocasionan grandes pérdidas económicas a la industria avícola a nivel mundial. Existen principalmente dos especies de micoplasmas como causantes de enfermedad en aves comerciales, el Mycoplasma gallisepticum (MG y el Mycoplasma synoviae (MS. Teniendo en cuenta su importancia y la necesidad de conocer y diferenciar la presencia de las diferentes especies de micoplasmas presentes en las explotaciones avícolas, se tomaron 91 muestras de hisopos traqueales de aves con síntomas respiratorios, provenientes de igual número de granjas de pollo de engorde, ponedoras comerciales y reproductoras pesadas ubicadas en los departamentos de Cundinamarca y Boyacá y se determinó la presencia de MG y MS por la técnica de PCR. La prevalencia determinada fue de 39,6% para MG y 47,3% para MS, encontrándose diferencias estadísticamente significativas cuando se comparó la positividad a MG y MS y el tipo de explotación (p

  3. Motion Rehab AVE 3D: A VR-based exergame for post-stroke rehabilitation.

    Science.gov (United States)

    Trombetta, Mateus; Bazzanello Henrique, Patrícia Paula; Brum, Manoela Rogofski; Colussi, Eliane Lucia; De Marchi, Ana Carolina Bertoletti; Rieder, Rafael

    2017-11-01

    Recent researches about games for post-stroke rehabilitation have been increasing, focusing in upper limb, lower limb and balance situations, and showing good experiences and results. With this in mind, this paper presents Motion Rehab AVE 3D, a serious game for post-stroke rehabilitation of patients with mild stroke. The aim is offer a new technology in order to assist the traditional therapy and motivate the patient to execute his/her rehabilitation program, under health professional supervision. The game was developed with Unity game engine, supporting Kinect motion sensing input device and display devices like Smart TV 3D and Oculus Rift. It contemplates six activities considering exercises in a tridimensional space: flexion, abduction, shoulder adduction, horizontal shoulder adduction and abduction, elbow extension, wrist extension, knee flexion, and hip flexion and abduction. Motion Rehab AVE 3D also report about hits and errors to the physiotherapist evaluate the patient's progress. A pilot study with 10 healthy participants (61-75 years old) tested one of the game levels. They experienced the 3D user interface in third-person. Our initial goal was to map a basic and comfortable setup of equipment in order to adopt later. All the participants (100%) classified the interaction process as interesting and amazing for the age, presenting a good acceptance. Our evaluation showed that the game could be used as a useful tool to motivate the patients during rehabilitation sessions. Next step is to evaluate its effectiveness for stroke patients, in order to verify if the interface and game exercises contribute into the motor rehabilitation treatment progress. Copyright © 2017 Elsevier B.V. All rights reserved.

  4. Efeito de diferentes tratamentos químicos em cama para aves de corte

    Directory of Open Access Journals (Sweden)

    Walter Lucca

    2012-04-01

    Full Text Available O objetivo do experimento foi avaliar diferentes tratamentos químicos em cama aviária para frango de corte. Foram 2 utilizadas 500 aves, em delineamento inteiramente casualizado, com cinco tratamentos: Hidróxido de cálcio (500g/m ; Sulfato de Alumínio (500g/m ; Sulfato de cálcio (1000g/m ; Sulfato de cálcio 48% + Filosilicato Expandido 28% (500g/m e testemunha com quatro repetições. As amostras de cama aviária foram coletadas a cada sete dias para determinação do pH, umidade e contagem bacteriana nos meios de cultura Ágar MacConkey, Plate Count Agar (PCA. O peso das aves não se diferenciaram estatisticamente aos 42 dias, porém se observou significância na mortalidade e a conversão alimentar, entretanto em relação ao pH da cama o ideal seria após o término da segunda semana fazer nova aplicação dos produtos químicos. Todos os tratamentos foram eficazes quanto à umidade. Na contagem bacteriana com o meio PCA para mesófilas totais houve redução do desenvolvimento bacteriano, porém com o meio Ágar MacConkey para Enterobactérias totais somente o tratamento a base de Sulfato de cálcio (48% + Filosilicato expandido (28% se mostrou significativo (P < 0,05. Para a análise estatística utilizou-se sistema SISVAR (Sistema de Analise Estatístico e Planejamento de Sistemas, 2006.

  5. Lice (Insecta: Phthiraptera) From species of the families Furnariidae, Tyrannidae, Turdidae and icteridae (Aves: Passeriformes) from Chile

    OpenAIRE

    González-Acuña, Daniel; Vergara, Francisco; Moreno, Lucila; Barrientos, Carlos; Ardiles, Karen; Cicchino, Armando

    2006-01-01

    A total of 185 birds (nine captured alive and 176 preserved in a museum), belonging to the families Furnariidae (n=14), Tyrannidae (n=4), Turdidae (n=24) and Icteridae (n=143) (Aves: Passeriformes) were searched for lice (Phthiraptera: Philopteridae, Menoponidae). The species collected and identified were: Furnaricola titicacae Carriker 1949 from Phleocryptes melanops (Vieillot 1817), and Picicola cuniculariae Cicchino 1981 from Geositta rufipennis fasciata (Burmeister 1860) (Furnariidae); Pi...

  6. New feather mites of the subfamily Pterodectinae (Acari: Astigmata: Proctophyllodidae) from passerines (Aves: Passeriformes) in Mato Grosso do Sul, Brazil

    Czech Academy of Sciences Publication Activity Database

    Mironov, S. V.; Literák, I.; Čapek, Miroslav

    2008-01-01

    Roč. 1947, - (2008), s. 1-38 ISSN 1175-5326 Institutional research plan: CEZ:AV0Z60930519 Keywords : Acari * Astigmata * feather mites * systematics * Brazil * Proctophyllodidae * Aves * Passeriformes Subject RIV: EG - Zoology Impact factor: 0.740, year: 2008 http://www.mapress.com/zootaxa/2008/f/zt01947p038.pdf

  7. Diversidad de Piojos de Aves Silvestres en Bosque Seco Tropical al Norte del Tolima -resumen-

    OpenAIRE

    M K Ariza-Lozano; Gloria María Ariza-Lozano; M J Gómez-Martínez

    2014-01-01

    Los Phthiraptera son insectos ápteros dorsoventralmente aplanados. Se encuentran divididos en cuatro subórdenes de los cuales Amblycera e Ischnocera son los que parasitan aves. En Colombia los estudios de ectoparásitos son escasos en comparación con otros grupos de insectos‚ los existentes poseen un enfoque generalmente taxonómico. Con respecto al departamento del Tolima hasta el momento se ha realizado una única investigación en la que se identificaron los organismos hasta el nivel de famili...

  8. Modelación matemática del consumo de presas y el flujo de energía asociado a la reproducción de Rostrhamus sociabilis (Aves, Falconiformes)

    OpenAIRE

    Denis, D.; Rodríguez–Ochoa, A.

    2017-01-01

    El gavilán caracolero (Rostrhamus sociabilis) es un ave rapaz, residente permanente y común en Cuba, clasificada como de alto interés conservacionista en el Plan de Conservación de las Aves Acuáticas de Norteamérica, en parte debido a su dieta altamente especializada en caracoles acuáticos del género Pomacea. En el presente estudio se elabora un modelo matemático en el programa Stella para analizar el consumo y la movilización de energía durante la reproducción del gavilán caracolero, ...

  9. Gene expression, glutathione status and indicators of hepatic oxidative stress in laughing gull (Larus atricilla) hatchlings exposed to methylmercury

    Science.gov (United States)

    Jenko, Kathryn; Karouna-Renier, Natalie K.; Hoffman, David J.

    2012-01-01

    Despite extensive studies of methylmercury (MeHg) toxicity in birds, molecular effects on birds are poorly characterized. To improve our understanding of toxicity pathways and identify novel indicators of avian exposure to Hg, the authors investigated genomic changes, glutathione status, and oxidative status indicators in liver from laughing gull (Larus atricilla) hatchlings that were exposed in ovo to MeHg (0.05–1.6 µg/g). Genes involved in the transsulfuration pathway, iron transport and storage, thyroid-hormone related processes, and cellular respiration were identified by suppression subtractive hybridization as differentially expressed. Quantitative polymerase chain reaction (qPCR) identified statistically significant effects of Hg on cytochrome C oxidase subunits I and II, transferrin, and methionine adenosyltransferase RNA expression. Glutathione-S-transferase activity and protein-bound sulfhydryl levels decreased, whereas glucose-6-phosphate dehydrogenase activity increased dose-dependently. Total sulfhydryl concentrations were significantly lower at 0.4 µg/g Hg than in controls. T ogether, these endpoints provided some evidence of compensatory effects, but little indication of oxidative damage at the tested doses, and suggest that sequestration of Hg through various pathways may be important for minimizing toxicity in laughing gulls. This is the first study to describe the genomic response of an avian species to Hg. Laughing gulls are among the less sensitive avian species with regard to Hg toxicity, and their ability to prevent hepatic oxidative stress may be important for surviving levels of MeHg exposures at which other species succumb.

  10. Valor nutricional de Lemna valdiviana Phil (Araceae submetida a diferentes concentrações de fertilização com excremento de aves

    Directory of Open Access Journals (Sweden)

    Graça Maria de Oliveira França

    2009-06-01

    Full Text Available http://dx.doi.org/10.5007/2175-7925.2009v22n3p19 As lemnaceas são plantas aquáticas com grande potencial de uso como matéria prima para ração de peixes devido ao alto valor nutricional. O objetivo deste estudo foi avaliar a composição química e a qualidade nutricional de Lemna valdiviana submetida a diferentes concentrações de adubação com excremento de aves. O experimento foi realizado em delineamento inteiramente casualizado com três repetições. Os tratamentos foram: Controle (sem adubação; T1 – 150g.m-3, T2 – 300g.m-3 e T3 – 450 g.m-3 de excremento de aves fresco, distribuídos em dose única para fertilizar o cultivo de L. valdiviana. A dose que proporcionou a melhor qualidade nutricional de L. valdiviana foi 450g.m-3 de excremento de aves, com teor de proteína bruta de 19,66% na matéria seca, percentual de fibras de 13,06% e teor de 0,26% de P, 1, 63% de N, 0,37% de Na e 1,22% de Ca na massa seca. Os teores alcançados nesse estudo indicam a possibilidade da L. valdiviana ser considerada uma matéria prima de boa qualidade nutricional para ser utilizada em outros experimentos como complemento na ração para peixes.

  11. Nitrógeno dietario como un nutriente limitante en aves frugívoras Dietary nitrogen as a limiting nutrient in frugivorous birds

    Directory of Open Access Journals (Sweden)

    BOSQUE CARLOS

    2000-09-01

    Full Text Available La pulpa de las frutas es considerada un alimento inadecuado para las aves frugívoras debido a su bajo contenido de proteína. Por lo tanto, se espera que los frugívoros minimicen sus pérdidas de nitrógeno como una adaptación a la frugivoría. En esta revisión examinamos las propiedades de las frutas y los rasgos fisiológicos de los frugívoros que afectan su capacidad para subsistir en base a una dieta de frutas. La mayoría de las frutas tropicales y templadas parecen contener suficiente nitrógeno para satisfacer los requerimientos de los pájaros, si su ingesta de alimento estuviera ajustada para compensar el gasto energético. Los requerimientos, sin embargo, dependen del tamaño corporal. Las aves más grandes deberían requerir alimentos con una relación de nitrógeno a energía más elevada que las aves pequeñas. No obstante, el nitrógeno digerible puede de hecho ser limitante ya que las pulpas de las frutas parecen contener cantidades considerables de nitrógeno no-proteico y una composición de aminoácidos diferente a la requerida por las aves. Ambas características de las frutas conducen a un aumento de las pérdidas de nitrógeno en aves frugívoras al consumir dietas naturales. En términos de sus adaptaciones fisiológicas, esperaríamos que los frugívoros posean una elevada capacidad de extracción de nitrógeno de la dieta y esbozamos la posibilidad de que las bajas pérdidas urinarias de nitrógeno de los frugívoros pudieran estar relacionadas con una baja tasa metabólica. La minimización de las pérdidas endógenas fecales podría ser la adaptación más importante de los frugívoros para subsistir con base en dietas pobres en nitrógeno. No es evidente como los frugívoros especializados pueden tener requerimientos de nitrógeno más bajos que los esperados en comparación a aves de otros grupos dietarios. Finalmente, sugerimos varios tópicos de investigación que conducirían a mejorar nuestra comprensión de

  12. Implementation and Analysis of the Chromakey Augmented Virtual Environment (ChrAVE) Version 3.0 and Virtual Environment Helicopter (VEHELO) Version 2.0 in Simulated Helicopter Training

    National Research Council Canada - National Science Library

    Hahn, M. E

    2005-01-01

    The Chromakey Augmented Virtual Environment (ChrAVE) 3.0 System is a training system created to augment initial, refresher, and proficiency training in helicopter aviation using accurate simulation...

  13. Aspectos histomorfométricos y cuantitativos del ovario de Patagioenas maculosa (Aves, Columbidae

    Directory of Open Access Journals (Sweden)

    Carina Maron

    2012-10-01

    Full Text Available Se analizaron las variaciones estructurales y cuantitativas del ovario de Patagioenas maculosa (Temminck, 1813 durante el ciclo anual 2005 - 2006. Treinta y cinco hembras adultas se capturaron en el Departamento Río Primero (Córdoba, Argentina. Las gónadas se extrajeron, pesaron y fijaron en formol tamponado a pH 7.0 y procesaron de acuerdo a la técnica de inclusión en parafina. En la mayoría de las aves el análisis morfohistológico del ovario reveló un notorio desarrollo de la gónada desde mayo a febrero, observándose 4 ó 5 folículos vitelogénicos amarillos ≥ de 4 mm y folículos preovulatorios. El incremento del peso gonadal con un valor máximo en setiembre y octubre concordó con las características morfológicas de la fase de recrudescencia gonadal. Luego de la ovipostura, los escasos folículos en desarrollo y abundantes folículos postovulatorios y atrésicos indicaron el comienzo de la regresión ovárica. En los meses de marzo y abril, el ovario exhibió el aspecto del reposo gonadal con abundantes ovocitos primarios, folículos previtelogénicos y vitelogénicos blancos ≤ 2 mm, escasos folículos vitelogénicos amarillos ≥ 2 mm y folículos atrésicos pequeños. El peso mínimo fue registrado en marzo. De los resultados se infiere que P. maculosa ovipone durante la mayor parte del año y que la prolongada actividad gonadal de esta ave estaría relacionada con la gran disponibilidad de alimento en el área de muestreo.

  14. Characterization of AhR agonists reveals antagonistic activity in European herring gull (Larus argentatus) eggs.

    Science.gov (United States)

    Muusse, Martine; Christensen, Guttorm; Gomes, Tânia; Kočan, Anton; Langford, Katherine; Tollefsen, Knut Erik; Vaňková, Lenka; Thomas, Kevin V

    2015-05-01

    European herring gull (Larus argentatus) eggs from two Norwegian islands, Musvær in the south east and Reiaren in Northern Norway, were screened for dioxins, furans, and dioxin-like and selected non-dioxin-like polychlorinated biphenyls (PCBs), and subjected to non-target analysis to try to identify the aryl hydrocarbon receptor (AhR) agonists, responsible for elevated levels measured using the dioxin responsive chemically activated luciferase expression (DR-CALUX) assay. Eggs from Musvær contained chemically calculated toxic equivalent (WHO TEQ) levels of between 109 and 483 pg TEQ/g lw, and between 82 and 337 pg TEQ/g lw was determined in eggs from Reiaren. In particular PCB126 contributed highly to the total TEQ (69-82%). In 19 of the 23 samples the calculated WHO TEQ was higher than the TEQCALUX. Using CALUX specific relative effect potencies (REPs), the levels were lower at between 77 and 292 pg/g lw in eggs from Musvær and between 55 and 223 pg/g lw in eggs from Reiaren, which was higher than the TEQCALUX in 16 of the 23 samples. However, the means of the REP values and the TEQCALUX were not significantly different. This suggests the presence of compounds that can elicit antagonist effects, with a low binding affinity to the AhR. Non-target analysis identified the presence of hexachlorobenzene (HCB) (quantified at 9.6-185 pg/g lw) but neither this compound nor high concentrations of PCB126 and non-dioxin-like PCBs could explain the differences between the calculated TEQ or REP values and the TEQCALUX. Even though, for most AhR agonists, the sensitivity of herring gulls is not known, the reported levels can be considered to represent a risk for biological effects in the developing embryo, compared to LC50 values in chicken embryos. For human consumers of herring gull eggs, these eggs contain TEQ levels up to four times higher than the maximum tolerable weekly intake. Copyright © 2015 Elsevier B.V. All rights reserved.

  15. Aplicação de pintura cromossômica em espécies da família Accipitridae (Aves, Falconiformes): considerações filogenéticas e evolutivas

    OpenAIRE

    TAGLIARINI, Marcella Mergulhão

    2013-01-01

    As análises citogenéticas de diversos Falconiformes mostraram que os acipitrídeos têm uma organização cromossômica atípica na classe Aves, com um número diplóide relativamente baixo (média de 2n= 66) e poucos pares de microcromossomos (4 a 6 pares). Propostas baseadas em citogenética clássica sugeriram que esse fato devia-se à fusão de microcromossomos presentes no cariótipo ancestral das Aves. No intuito de contribuir para o esclarecimento das questões referentes à evolução cromossô...

  16. Valores de energia metabolizável de alguns alimentos obtidos com aves de diferentes idades Metabolizable energy values of feedstuffs obtained from poultry at different ages

    Directory of Open Access Journals (Sweden)

    Heloisa Helena de Carvalho Mello

    2009-05-01

    Full Text Available Foram realizados quatro ensaios de metabolismo com a finalidade de determinar a energia metabolizável aparente (EMA e a energia metabolizável aparente corrigida (EMAn de dez alimentos em aves em diversas idades. Os alimentos testados foram: milho, farelo de soja, sorgo, farelo de trigo, farelo de arroz integral, duas farinhas de penas, duas farinhas de vísceras e plasma sangüíneo. Utilizou-se o método de coleta total de excretas, em delineamento experimental inteiramente casualizado, com 11 tratamentos (dez alimentos e uma ração-referência e seis repetições. No primeiro ensaio, foram utilizados 528 pintos de corte machos de 10 a 17 dias de idade, totalizando oito aves por repetição; no segundo ensaio, 396 frangos de corte machos de 26 a 33 dias de idade, com seis aves por repetição; no terceiro ensaio, 264 frangos de corte machos de 40 a 47 dias de idade, com quatro aves por repetição; e, no quarto ensaio, 132 galos, com duas aves por repetição. A idade das aves influenciou os valores de EMA e EMAn do farelo de soja, do sorgo, do farelo de arroz integral, das farinhas de penas e do plasma sangüíneo, enquanto, para o farelo de trigo, teve efeito apenas sobre a EMAn.Four assays were carried out to determine the apparent metabolizable energy (AME and the corrected apparent nitrogen metabolizable energy (AMEn of ten feeds for poultry at different poultry ages. The feeds studied were: corn grain, soybean meal, ground sorghum, wheat bran, integral rice bran, two kinds of feather meal, two kinds of poultry viscera meal and spray-dried plasma. The method of total excreta collection was used to determine the AME and AMEn values. The broiler chicks were distributed on a completely randomized experimental design, with 11 treatments, six replications, with different number of animals by replication according to the assay. In the first assay, 528 male broiler chicks in the period from 10 to 17 days of age were used, with eight animals

  17. Actividad reproductiva de Chelonia mydas (Testudines: Cheloniidae en Isla de Aves, Venezuela (2001-2008 Reproductive activity of Chelonia mydas (Testudines: Cheloniidae in Isla de Aves, Venezuela (2001-2008

    Directory of Open Access Journals (Sweden)

    Vicente Vera

    2012-06-01

    Full Text Available Isla de Aves, una isla a 650km de La Guaira, Venezuela, protegida como Refugio de Fauna Silvestre, constituye el segundo sitio de mayor anidación de la tortuga verde (Chelonia mydas (Linnaeus 1758 en el Caribe. El seguimiento de la población comenzó en 1972 y de manera más continua desde 1978. Los datos históricos indican que la captura de hembras en la isla, afectó severamente la población hasta 1978, cuando fue construida una base científico-naval. Durante las temporadas de anidación entre 2001-2008 con excepción de 2003 y 2004, las hembras fueron marcadas con placas metálicas y medidas. Asimismo, se muestreó durante 458 noches, en donde se observaron 5 154 eventos, con un máximo de 53 por noche. Los posibles eventos no observados fueron calculados ajustando la distribución temporal de eventos observados a una curva normal. El total de eventos estimados varió de =637.1±106.6 en 2001 a =2 853±42.5 en 2008 (ANOVA F(6.5gl=60.37, pReproductive activity of Chelonia mydas (Testudines: Cheloniidae in Isla de Aves, Venezuela (2001-2008. The second major nesting-site for green turtles in the Caribbean is Isla de Aves, an island protected as a wildlife refuge since 1972, located at 650km Northeast from La Guaira, Venezuela. In this island, the nesting population monitoring started in 1972 and in a more continuous way after 1978, when a Scientific-Naval Station was established and scientific observations started. Since historical data show that female captures had severely affected population levels in this island before 1978, this study aim to describe recent reproductive activities. For this, during the nesting seasons of 2001-2002 and 2005-2008, nesting females were measured and tagged using metal flipper tags. A total of 458 nights were sampled observing 5 154 female emergences, with a maximum of 53 in a single night. Non-observed emergences were calculated fitting the temporal distribution of observed emergences to a normal curve

  18. Riqueza y abundancia de aves en bosques ribereños de diferentes anchos en la microcuenca del río Sesesmiles, Copán, Honduras

    Directory of Open Access Journals (Sweden)

    Inty T Arcos

    2008-03-01

    Full Text Available El estudió se realizó en la microcuenca del río Sesesmiles, Departamento de Copán, Honduras. El propósito fue explorar el efecto del ancho de franja de los bosques ribereños sobre la riqueza y abundancia de especies de aves que visitan estos bosques. Se encontraron 1 294 aves pertenecientes a 145 especies en bosques ribereños. La diversidad de aves estuvo ligada al ancho de franja de los bosques ribereños: se encontró mayor número de especies e individuos, en anchos iguales o mayores a 50 m. Las especies pertenecientes al grupo alimenticio de los insectívoros y nectarívoros fueron las más abundantes en las franjas ribereñas. Todas las especies de aves identificadas dependen de los bosques ribereños y responden al ancho del bosque; aún las especies más generalistas tienen algún grado de dependencia a las franjas ribereñas más anchas. Para conservar las poblaciones de aves en los paisajes agrícolas fragmentados es de suma importancia mantener franjas ribereñas que sean mayores a 50 m de ancho y que brinden suficientes habitas y recursos.Richness and abundance of birds in riparian forest belts of varied breadths at the Sesesmiles river microwatershed, Copan, Honduras. Riparian forests protect many species of plants and animals. We studied bird communities in riparian forest belts of the Sesesmiles river microwatershed, Copan, Honduras (140o 43’ 12" - 140o 58’ 35" N, 88o 53’ 23" - 89o 14’ 17" W. The main goal was to explore the effects of belt breadth on the richness and abundance of avian species visiting these forests. We selected 20 belts, and randomly established 30 observation points to monitor bird presence in the dry (March-April 2005 and rainy (June-July 2005 season (N= 60 observations. A total of 1 294 birds belonging to 145 species were recorded. Bird diversity was significantly correlated to the breadth of the riparian belts, with a greater number of species and individuals in belts 50 m wide or wider

  19. Simulaton of the Avedøreværket Unit 1 Cogeneration Plant with DNA

    DEFF Research Database (Denmark)

    Elmegaard, Brian; Houbak, Niels

    2003-01-01

    The simulator contest proposed for the ECOS 2003 conference has been solved using the DNA energy system simulator. The contest concerns the steam process of the Avedøreværket Unit 1 (AVV1) power plant. The plant is a 250 MWCHP plant with a maximum district heat production of 330 MJ/s. The plant has...... a net electric efficiency of 42% and a maximum energy utilization of 92%. In this paper it is demonstrated, that the DNA model of AVV1 can calculate the whole flow sheet balance at any load point, i.e., any possible combination of power production and district heat production. The paper also contains...

  20. Diversidad y distribución de las especies de Mallophaga (Insecta en Aves y Mamíferos de la Comunidad de Madrid

    Directory of Open Access Journals (Sweden)

    Martín Mateo, M. P.

    2006-05-01

    Full Text Available Based on the entomological collection of the Museo Nacional de Ciencias Naturales, MNCN (Madrid, Spain and the literature, a total of 145 species of birds and 12 species of mammals that could be potential hosts of Mallophaga, are cited for Madrid. These species are potential hosts to 306 species of Mallophaga. Only 29 species of birds (20% and 2 species of mammals (14,3% have been searched for the presence of Mallophaga. These species could be potential hosts of 91 different Mallophaga species, but only 40 species (44% are recorded. Each species present in Madrid is indicated with its the host, the material known and respective references.

    Se presenta información general sobre la biodiversidad y distribución de los Mallophaga parásitos de aves y mamíferos en la Comunidad de Madrid. Con base en datos obtenidos en colecciones del MNCN (Madrid y revisión de la bibliografía de referencia, se obtienen un total de 145 especies de aves y 12 de mamíferos hospedadores potenciales de 306 especies de malófagos en la Comunidad de Madrid. De ésas, solo 29 especies de aves (20 % y 2 de mamíferos (14,3 % han sido exploradas, las cuales podrían estar parasitadas por, al menos, 91 especies diferentes de malófagos, pero solo se conocen citas de 40 especies (44 %. En cada especie indicada se señalan los hospedadores conocidos, material y referencia correspondiente para cada especie de Mallophaga citada en la Comunidad de Madrid.

  1. Características técnico-sanitarias de expendios de carnes, pescados, aves y huevos de la ciudad de Tunja 2003

    Directory of Open Access Journals (Sweden)

    Fred Gustavo Manrique-Abril

    2011-02-01

    Full Text Available Se presenta una caracterización epidemiológica de los expendios de carnes, pescado y aves de Tunja en el año 2003, resultado del diagnóstico sanitario del municipio y las visitas adelantadas por la unidad de saneamiento. Al partir del compromiso que el sector salud tiene en el componente de ambiente, surge la necesidad de crear un sistema de vigilancia epidemiológica ambiental, cuya metodología y estrategia esté orientada hacia el conocimiento de los factores de riesgo ambientales a que están expuestos los grupos humanos, con el fin de determinar prioridades y orientar los recursos de salud disponibles en el desarrollo de intervenciones; es por eso que se implantó en Tunja la vigilancia de factores de riesgo del consumo en esta estrategia, la cual, incluye la de expendios decarnes y derivados, aves huevos y pescado; entonces, se usaron las actas de inspección sanitaria y se tabuló en EPIINFO 2002 para su análisis con SPSS 11,5. Así se realizó un análisis descriptivo a 173 establecimientos y se encontró que existen condiciones diversas de sanidad respecto de la estructura física, los procesos productivos y el producto para la venta; también hay un incumplimiento de normas técnico-sanitarias, en diferentes sectores de la ciudad, que se priorizan para el control por parte de la autoridad sanitaria. Al 75% de los establecimientos no cumplen con las condiciones higiénico sanitarias en cárnicos; el 66,6% no cuenta con las condiciones en establecimiento de venta de pescados ý el 52,5% delos establecimientos de venta de aves y huevos, no cumplen con las condiciones higiénico sanitarias para tal fin.

  2. Análisis toxicológico y estudio histopatológico de las aves muertas por la catástrofe del petrolero “Prestige”

    OpenAIRE

    Rodríguez Ledesma, Percy Arturo

    2013-01-01

    El presente trabajo de investigación es un estudio multidisciplinar que intenta explicar las posibles causas de muerte de las aves marinas afectadas por el derrame del petrolero Prestige en noviembre de 2002, frente a las costas de Galicia.

  3. Avaliação dos comportamentos de aves poedeiras utilizando seqüência de imagens Behavior evaluation of laying hens using image sequences

    Directory of Open Access Journals (Sweden)

    José A. D. Barbosa Filho

    2007-04-01

    Full Text Available A grande preocupação com o uso de gaiolas dá-se quanto ao espaço oferecido às aves poedeiras, o qual, certamente, afeta seu bem-estar. Sendo assim, este trabalho teve o objetivo de avaliar aspectos relacionados ao comportamento e bem-estar animal, comparando o sistema de criação alternativo (com cama e ninho com o sistema convencional em gaiolas. Para isso, dois grupos de 20 aves (10 Hy-Line W36 e 10 Hy-Line Brown em início de produção foram divididos em dois sistemas de criação (cama+ninho e gaiolas e colocadas em câmara climática: um grupo a 26 °C e 60% UR (condição de conforto térmico, e outro a 35 °C e 70% UR (condição de estresse térmico, onde eram constantemente monitoradas por câmeras de vídeo. Com base na análise dos comportamentos, verificou-se que o sistema de criação em cama propiciou a expressão de todos os comportamentos naturais relacionados ao conforto das aves, evidenciando o estado de bem-estar das mesmas. Para o sistema em gaiolas, pôde ser constatado que as aves tentavam expressar seus comportamentos naturais, mesmo não tendo condições para isso. Essa impossibilidade de expressão dos comportamentos agravou as condições de estresse provocadas por esse sistema de criação e pela condição ambiental a que as aves foram submetidas.The concern about the use of cages is related to barren environment and the minimal space offered to the laying hens, which negatively affects bird welfare. The present study focused on the aspect evaluation related to the behavior and welfare of birds, making a comparison between the alternative housing system (with litter and nests and the conventional cage system. Two groups of 20 laying hens (10 Hy-Line W36 and 10 Hy-line Brown at the beginning of the production were divided in two breeding systems (litter+nest and cages. Both of them were kept in climatic controlled chambers: one group with an ambient temperature of 26 °C and 60% RH (Thermal Comfort Condition

  4. Environmental Predictors of Seabird Wrecks in a Tropical Coastal Area.

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    Davi Castro Tavares

    Full Text Available Beached bird surveys have been widely used to monitor the impact of oil pollution in the oceans. However, separating the combined effects of oil pollution, environmental variables and methodological aspects of beach monitoring on seabird stranding patterns is a challenging task. The effects of a comprehensive set of oceanographic and climatic variables and oil pollution on seabird strandings in a tropical area of Brazil were investigated herein, using two robust and innovative methods: Generalized Linear Mixed Models and Structural Equation Modeling. We assessed strandings of four resident seabird species along 480 km of beaches divided into 11 sampling areas, between November 2010 and September 2013. We found that increasing the distance from the nearest breeding island reduce the seabird stranding events. Storm activity and biological productivity were the most important factors affecting the stranding events of brown boobies Sula leucogaster, Cabot's terns Thalasseus acuflavidus and kelp gulls Larus dominicanus. These species are also indirectly affected by warm tropical waters, which reduce chlorophyll-a concentrations. Beach surveys are, thus, useful to investigate the mortality rates of resident species near breeding sites, where individuals are more abundant and exposed to local factors associated with at-sea mortality. In contrast, conservation actions and monitoring programs for far-ranging seabird species are needed in more distant foraging areas. Furthermore, beach monitoring programs investigating the impact of oil pollution on seabirds need to account for the effects of environmental factors on stranding patterns. The present study also demonstrated that seabirds inhabiting tropical coastal waters are sensitive to climate conditions such as adverse weather, which are expected to increase in frequency and intensity in next decades.

  5. Grão de girassol e seus subprodutos: potenciais fontes proteicas para alimentação de aves

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    Raimunda Thyciana Vasconcelos Fernandes

    2014-05-01

    Full Text Available O setor de avicultura pode ser considerado um dos mais desenvolvidos e tecnificados da agropecuária mundial. Os avanços do melhoramento genético aliado ao desenvolvimento da nutrição, sanidade e técnicas de manejo, resultaram na avicultura atual, de alta eficiência e organização com a finalidade de produzir proteína animal de alto valor biológico para o consumo humano a baixo custo. A cadeia produtiva avícola tem íntima relação com a agricultura, principalmente com milho e soja (principais alimentos utilizados na alimentação de aves, no entanto a utilização destes alimentos para nutrição humana e ou refinarias gera uma competição e consequentemente a valorização dos preços destas commodities, o que aumenta o custo de produção e reduz as margens de comercialização. Desta forma, pesquisadores buscam alternativas alimentares economicamente viáveis numa tentativa de minimizar estes custos e manter os índices de desempenho produtivo.  Neste contexto, o grão de girassol e seus subprodutos são caracterizados como uma fonte proteica de boa qualidade capaz de compor dietas para aves.

  6. Detección de aves exóticas en parques urbanos del centro de México

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    Rubén Pineda-López

    2013-01-01

    Full Text Available Las áreas arboladas urbanas son utilizadas por algunas aves invasoras en su proceso de colonización; la detección temprana de estas especies es una acción necesaria para su vigilancia y control. Utilizamos un muestreo rápido en parques urbanos, que requiere de poco tiempo de planeación y ejecución, como una forma de detección de aves que actualmente aumentan su distribución en México: Streptopelia decaocto (paloma de collar, Myiopsitta monachus (perico monje, Turdus rufopalliatus (mirlo dorso rufo y Sturnus vulgaris (estornino pinto. Realizamos los muestreos en la mayoría de los parques de las ciudades de León de los Aldama, Guanajuato, Aguascalientes y Santiago de Querétaro. Presentamos los primeros registros de M. monachus, T. rufopalliatus y S. vulgaris para la ciudad de León de los Aldama; así como de M. monachus en la de Guanajuato. Además, en Santiago de Querétaro registramos las cuatro especies buscadas; a T. rufopalliatus en Guanajuato, y a S. vulgaris en Aguascalientes. Analizamos las variables asociadas con la presencia de las especies, así como el establecimiento de las especies en cada ciudad en relación con la proporción de parques en que se presentan. Sugerimos que este método es útil para evaluar la distribución actual de estas especies en México y proveer de conocimiento básico para futuros estudios.

  7. Codon usage bias and phylogenetic analysis of mitochondrial ND1 gene in pisces, aves, and mammals.

    Science.gov (United States)

    Uddin, Arif; Choudhury, Monisha Nath; Chakraborty, Supriyo

    2018-01-01

    The mitochondrially encoded NADH:ubiquinone oxidoreductase core subunit 1 (MT-ND1) gene is a subunit of the respiratory chain complex I and involved in the first step of the electron transport chain of oxidative phosphorylation (OXPHOS). To understand the pattern of compositional properties, codon usage and expression level of mitochondrial ND1 genes in pisces, aves, and mammals, we used bioinformatic approaches as no work was reported earlier. In this study, a perl script was used for calculating nucleotide contents and different codon usage bias parameters. The codon usage bias of MT-ND1 was low but the expression level was high as revealed from high ENC and CAI value. Correspondence analysis (COA) suggests that the pattern of codon usage for MT-ND1 gene is not same across species and that compositional constraint played an important role in codon usage pattern of this gene among pisces, aves, and mammals. From the regression equation of GC12 on GC3, it can be inferred that the natural selection might have played a dominant role while mutation pressure played a minor role in influencing the codon usage patterns. Further, ND1 gene has a discrepancy with cytochrome B (CYB) gene in preference of codons as evident from COA. The codon usage bias was low. It is influenced by nucleotide composition, natural selection, mutation pressure, length (number) of amino acids, and relative dinucleotide composition. This study helps in understanding the molecular biology, genetics, evolution of MT-ND1 gene, and also for designing a synthetic gene.

  8. A new record of the Restinga Tyrannulet Phylloscartes kronei (Aves, Rynchocyclidae at Ilha do Cardoso State Park, southeastern Brazil (Scientific Note. Novo registro de maria-da-restinga, Phylloscartes kronei (Aves, Rynchocyclidae no Parque Estadual Ilha do Cardoso, Sudeste do Brasil (Nota Científica

    Directory of Open Access Journals (Sweden)

    Augusto João PIRATELLI

    2014-06-01

    Full Text Available During an expedition to Ilha do Cardoso State Park, in Cananéia, São Paulo, Brazil, two individuals of the Restinga Tyrannulet (Phylloscartes kronei, Aves: Rynchocyclidae were captured with a 36 mm mesh mist net in a restinga area (25o 12.243’S and 47o 59.502’W at Núcleo Marujá. This random record highlights the relevance of this protected area for this globally threatened species (vulnerable, where it is apparently abundant, due to the existence of suitable sites for its survival and reproduction. Durante uma expedição ao Parque Estadual Ilha do Cardoso, em Cananéia, SP, dois indivíduos de maria-da-restinga (Phylloscartes kronei, Aves: Rynchocyclidae foram capturados com uma rede de neblina de malha 36 mm em uma área de restinga (25o 12.243’S e 47o 59.502’O, no Núcleo Marujá. Esse registro fortuito ressalta a relevância desta Unidade de Conservação para esta espécie globalmente ameaçada (vulnerável, onde ela aparentemente é abundante, devido à existência de habitats adequados à sua sobrevivência e reprodução.

  9. Nuevos registros de aves con anormalidad pigmentaria en México y propuesta de clave dicotómica para la identificación de casos

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    Erick R. Rodríguez-Ruíz

    2017-04-01

    Full Text Available Las anormalidades pigmentarias en aves han adquirido mayor importancia e interés entre la comunidad ornitológica; sin em- bargo, resulta necesario contar con una herramienta de diagnóstico apropiada que brinde los criterios para lograr un sistema de identificación entre los distintos tipos de anormalidades. Para ello, proponemos una clave dicotómica para su identificación en campo con base en terminología obtenida de literatura especializada y una asociación de caracteres fenotípicos de aves. También, reportamos la presencia de anormalidades pigmentarias en la coloración corporal y de plumaje de cinco especies de aves que han sido observadas de forma ocasional en áreas perturbadas por impacto antropogénico en Tamaulipas, México: melanismo en la tortolita mexicana (Columbina inca, aberración ino en la paloma turca (Streptopelia decaocto, aberración ino en el correcaminos norteño (Geococcyx californianus, leucismo parcial en el pijuy (Crotophaga sulcirostris y leucismo parcial en el tordo de ojo rojo (Molothrus aeneus. Las evidencias de casos actuales sugieren un aparente aumento de especies en vida libre con variación en la pigmentación. Las causas que lo provocan aún son discutibles, por lo cual, relacionar qué factores naturales o artificiales están involucrados en estos padecimientos podrá contribuir a determinar su origen y detectar problemas a nivel de poblaciones. La clave dicotómica propuesta en la identificación de anormalidades pigmentarias puede ser una herramienta continua en contextos modernos, si se unifica la terminología empleada.

  10. Suspension-firing of wood with coal ash addition: Probe measurements of ash deposit build-up at Avedøre Power Plant (AVV2)

    DEFF Research Database (Denmark)

    Shafique Bashir, Muhammad; Jensen, Peter Arendt; Jappe Frandsen, Flemming

    This report is about full-scale probe measurements of deposit build-up and removal conducted at the Avedøreværket Unit 2, a 800 MWth suspension boiler, firing wood and natural gas with the addition of coal ash. Coal ash was used as an additive to capture potassium (K) from wood-firing. Investigat...... to the gas phase as HCl(g). Effect of boiler operational parameters on gas emissions has also been investigated.......This report is about full-scale probe measurements of deposit build-up and removal conducted at the Avedøreværket Unit 2, a 800 MWth suspension boiler, firing wood and natural gas with the addition of coal ash. Coal ash was used as an additive to capture potassium (K) from wood...... and boiler load on ash deposition propensity was investigated. Results of ash deposition propensity showed increasing trend with increasing flue gas temperature. Video monitoring revealed that the deposits formed were not sticky and could be easily removed, and even at very high flue gas temperatures (> 1350...

  11. Contracaecumovale (Nematoda: Anisakidae from Rollandia rolland Quoy & Gaimard 1824 (Aves, Podicipedidae in Argentina Contracaecumovale (Nematoda: Anisakidae de Rollandia rolland Quoy & Gaimard 1824 (Aves, Podicipedidae na Argentina

    Directory of Open Access Journals (Sweden)

    Noelia Adelina Galeano

    2012-06-01

    Full Text Available Necropsy on 15 specimens of white-tufted grebe, Rollandiarolland, caught in the Mar Chiquita and Chascomús lagoons (Buenos Aires province, revealed the presence of Contracaecumovale (Linstow, 1907. This nematode shows a marked specificity for podicipediform birds. The specimens were identified from morphological study on features such as cephalic and esophageal structures and caudal papillae, using both optical and scanning electron microscopy. This is the first record of C. ovale parasitizing R. rolland in Argentina.Necropsia de 15 espécimes de mergulhão-de-orelha-branca, Rollandiarolland, coletados nas lagoas Mar Chiquita e Chascomús (Província de Buenos Aires, revelou a presença de Contracaecumovale (Linstow, 1907. Esse nematóide tem uma marcada especificidade pelas aves podicipediformes. Os espécimes foram identificados a partir de características, tais como estruturas morfológicas cefálicas e esofágicas e papilas caudais, utilizando-se microscopia óptica e microscopia eletrônica de varredura (MEV. Esse é o primeiro registro de C. ovale parasito de R. rolland na Argentina.

  12. Egg Production in a Coastal Seabird, the Glaucous-Winged Gull (Larus glaucescens), Declines during the Last Century

    Science.gov (United States)

    Blight, Louise K.

    2011-01-01

    Seabirds integrate information about oceanic ecosystems across time and space, and are considered sensitive indicators of marine conditions. To assess whether hypothesized long-term foodweb changes such as forage fish declines may be reflected in a consumer's life history traits over time, I used meta-regression to evaluate multi-decadal changes in aspects of egg production in the glaucous-winged gull (Larus glaucescens), a common coastal bird. Study data were derived from literature searches of published papers and unpublished historical accounts, museum egg collections, and modern field studies, with inclusion criteria based on data quality and geographic area of the original study. Combined historical and modern data showed that gull egg size declined at an average of 0.04 cc y−1 from 1902 (108 y), equivalent to a decline of 5% of mean egg volume, while clutch size decreased over 48 y from a mean of 2.82 eggs per clutch in 1962 to 2.25 in 2009. There was a negative relationship between lay date and mean clutch size in a given year, with smaller clutches occurring in years where egg laying commenced later. Lay date itself advanced over time, with commencement of laying presently (2008–2010) 7 d later than in previous studies (1959–1986). This study demonstrates that glaucous-winged gull investment in egg production has declined significantly over the past ∼50–100 y, with such changes potentially contributing to recent population declines. Though gulls are generalist feeders that should readily be able to buffer themselves against food web changes, they are likely nutritionally constrained during the early breeding period, when egg production requirements are ideally met by consumption of high-quality prey such as forage fish. This study's results suggest a possible decline in the availability of such prey, and the incremental long-term impoverishment of a coastal marine ecosystem bordering one of North America's rapidly growing urban areas. PMID

  13. Egg production in a coastal seabird, the glaucous-winged gull (Larus glaucescens, declines during the last century.

    Directory of Open Access Journals (Sweden)

    Louise K Blight

    Full Text Available Seabirds integrate information about oceanic ecosystems across time and space, and are considered sensitive indicators of marine conditions. To assess whether hypothesized long-term foodweb changes such as forage fish declines may be reflected in a consumer's life history traits over time, I used meta-regression to evaluate multi-decadal changes in aspects of egg production in the glaucous-winged gull (Larus glaucescens, a common coastal bird. Study data were derived from literature searches of published papers and unpublished historical accounts, museum egg collections, and modern field studies, with inclusion criteria based on data quality and geographic area of the original study. Combined historical and modern data showed that gull egg size declined at an average of 0.04 cc y(-1 from 1902 (108 y, equivalent to a decline of 5% of mean egg volume, while clutch size decreased over 48 y from a mean of 2.82 eggs per clutch in 1962 to 2.25 in 2009. There was a negative relationship between lay date and mean clutch size in a given year, with smaller clutches occurring in years where egg laying commenced later. Lay date itself advanced over time, with commencement of laying presently (2008-2010 7 d later than in previous studies (1959-1986. This study demonstrates that glaucous-winged gull investment in egg production has declined significantly over the past ∼50-100 y, with such changes potentially contributing to recent population declines. Though gulls are generalist feeders that should readily be able to buffer themselves against food web changes, they are likely nutritionally constrained during the early breeding period, when egg production requirements are ideally met by consumption of high-quality prey such as forage fish. This study's results suggest a possible decline in the availability of such prey, and the incremental long-term impoverishment of a coastal marine ecosystem bordering one of North America's rapidly growing urban areas.

  14. USO DA TERAPIA ESPELHO NA AMPLITUDE DE MOVIMENTO E FUNÇÃO DO MEMBRO INFERIOR EM PACIENTES HEMIPARÉTICOS PÓS-AVE

    Directory of Open Access Journals (Sweden)

    Livia Danyelle Viana Lima

    2017-02-01

    Full Text Available Resumo: O exercício associado a terapia espelho potencializa a retenção de habilidades, melhorando o desempenho de atividades motoras de indivíduos hemiparéticos pós-AVE. Este estudo objetivou a análise do efeito da terapia espelho na amplitude de movimento e funcionalidade do membro inferior. Amostra composta de 11 participantes, com hemiparesia em membro inferior, submetidas a fisioterapia convencional. A intervenção constituiu de 10 atendimentos, 30 minutos diários e três vezes por semana. Para avaliação foram usados: Goniometria; Escala Modificada de Ashworth (EMA; Escala de Força de Oxford; Cadência de Subida e Descida de Escada; Time Up And Go Test. Os dados foram coletados antes e após a intervenção da Terapia Espelho e comparados. Segundo resultados do estudo a Terapia Espelho proporcionou ganhos na ADM e função do membro inferior parético pós-AVE, porém não interferiu na espasticidade. Palavras-chave: Acidente Vascular Encefálico, Hemiparesia, Retroalimentação Visual.

  15. Contribución al conocimiento de los malófagos (Phthiraptera, Amblycera, Ischnocera de aves peruanas. Parte 1

    Directory of Open Access Journals (Sweden)

    Luis A. Gomez-Puerta

    2015-12-01

    Full Text Available En el presente trabajo se reporta nueve especies de malófagos colectados de aves peruanas. Dos malófagos Amblycera: Heteromenopon laticapitis y Menacanthus pici, así como siete malófagos Ischnocera: Alcedoffula theresae, Brueelia brunneinucha, Chelopistes meleagridis, Columbicola columbae, Paragoniocotes aratingae, Penenirmus jungens y Saemundssonia (Saemundssonia lari, fueron determinados mediante el diagnóstico morfológico. Se realiza una breve descripción de cada malófago, así como la discusión de sus hospederos y distribución.

  16. O potencial do DNA barcode na identificação de espécies de aves neotropicais

    OpenAIRE

    Priscila Fernanda Mussi Gonçalves

    2009-01-01

    O presente trabalho foi organizado em cinco capítulos. No primeiro é apresentada uma breve revisão da bibliografia relacionada ao DNA barcode, apontando as aplicações e os limites desse marcador. Os resultados obtidos são apresentados nos três capítulos subsequentes. O segundo capítulo teve como objetivo avaliar o potencial do método de DNA barcoding na distinção de 783 amostras de 228 espécies diferentes de aves neotropicais de 16 ordens baseado na diferença dos valores de divergências intra...

  17. Actividad reproductiva de Chelonia mydas (Testudines: Cheloniidae en Isla de Aves, Venezuela (2001-2008

    Directory of Open Access Journals (Sweden)

    Vicente Vera

    2012-06-01

    Full Text Available Isla de Aves, una isla a 650km de La Guaira, Venezuela, protegida como Refugio de Fauna Silvestre, constituye el segundo sitio de mayor anidación de la tortuga verde (Chelonia mydas (Linnaeus 1758 en el Caribe. El seguimiento de la población comenzó en 1972 y de manera más continua desde 1978. Los datos históricos indican que la captura de hembras en la isla, afectó severamente la población hasta 1978, cuando fue construida una base científico-naval. Durante las temporadas de anidación entre 2001-2008 con excepción de 2003 y 2004, las hembras fueron marcadas con placas metálicas y medidas. Asimismo, se muestreó durante 458 noches, en donde se observaron 5 154 eventos, con un máximo de 53 por noche. Los posibles eventos no observados fueron calculados ajustando la distribución temporal de eventos observados a una curva normal. El total de eventos estimados varió de =637.1±106.6 en 2001 a =2 853±42.5 en 2008 (ANOVA F(6.5gl=60.37, p<0.0001. El intervalo entre reanidaciones fue de =10.7±1.32 días. La frecuencia de anidación se calculó en =1.71±1.6 veces por hembra. El número de hembras estimadas varió entre =373±12.5 para 2001 y =1 669±56.1 para 2008 (ANOVA F(5.6gl=89.42, p<0.0001. La tendencia es significativa (r=0.842, p=0.036. Los resultados indican que el número de hembras que anidan en Isla de Aves ha aumentado, y se sugiere que más de 30 años de protección del área de reproducción está resultando en un creciente número de hembras.

  18. Difracción de luz a través de una pluma de ave

    Directory of Open Access Journals (Sweden)

    Hugo Pérez García

    2012-01-01

    Full Text Available Se ha utilizado una pluma de ave para estudiar la difracción de la luz, tanto de forma cualitativa como cuantitativa. La medida experimental de la separación entre los puntos luminosos del patrón de difracción obtenido con un puntero láser ha permitido determinar el espaciado entre las barbas y entre las bárbulas de la pluma. Los resultados obtenidos muestran un acuerdo satisfactorio con los correspondientes a la estructura típica de una pluma. Los materiales empleados, los conceptos involucrados y los resultados experimentales convierten a esta experiencia en un excelente recurso didáctico para el estudio de la difracción, tanto en los primeros cursos universitarios como en los últimos cursos del Bachillerato.

  19. Persistent chlorinated hydrocarbons and mercury in birds caught off the west coast of Spitsbergen. [Larus hyperboreus, Fulmarus glacialis, Uria lomvia, Alle alle, Somateria mollissima

    Energy Technology Data Exchange (ETDEWEB)

    Norheim, G.; Kjos-Hanssen, B.

    1984-01-01

    The tissue concentrations of DDE, PCB, hexachlorobenzene (HCB) and mercury were determined in five species of migrating seabirds: glaucous gull Larus hyperboreus; fulmar Fulmarus glacialis; Bruennech's guillemot Uria lomvia; little auk Alle alle and eider Somateria mollissima. These birds nest on Svalbard and were shot in May 1980 off the west coast of Spitsbergen. The highest levels of DDE, PCB and HCB were found in glaucous gull, whilst low levels were found in Bruennich's guillemot, little auk and, expecially, eider. Fulmars were intermediate. Highly significant correlations were found between the concentrations of HCB, DDE and PCB. These results could indicate that the Gulf Stream is a common source of these substances. The highest mercury levels were found in the fulmar; glaucous gull and eider were intermediate, whilst the lowest mercury levels were found in Bruennich's guillemot and little auk. There was no connection between the nutritional condition and concentrations of the pollutants determined. However, there seems to be a close relationship between the levels of chlorinated hydrocarbons and the trophic level of the birds in the food chain. A comparison between the present results and analyses of Antartic seabirds indicates that the aquatic food chain in the Arctic is more loaded with persistent chlorinated hydrocarbons than in the Antarctic, whereas more mercury seems to be found in Antarctic birds.

  20. Nuevo examen de los grabados paleolíticos de El Pendo (Cantabria, España. Consideraciones sobre las aves del arte paleolítico de la Península Ibérica

    Directory of Open Access Journals (Sweden)

    García Díez, Marcos

    2011-06-01

    Full Text Available Birds are very scarce in Palaeolithic rock art. Since 1907 figures of razorbill and raptors (probably vulture have been described at the end of the Pendo cave, both attributed to an Upper Palaeolithic origin (from Aurignacian to Lower Magdalenian, depending on the authors. The new revision of the group of engravings shows the presence of an unambiguous bird, but the morphology of the figure did not permit its precise taxonomic identification. The work also presents a revision of the birds known in Iberian Palaeolithic rock art.

    La presencia de aves en el repertorio iconográfico del arte rupestre paleolítico es muy escasa. Desde 1907 se vienen describiendo unas figuras de alca y de rapaz (probablemente buitre en la parte final de la cueva de El Pendo. Los autores las asignan a un momento antiguo, desde el Auriñaciense hasta el Magdaleniense inferior. Una nueva lectura del conjunto de grabados permite apuntar la presencia inequívoca de una imagen de ave, sin características que permitan su identificación taxonómica precisa. El trabajo revisa, además, las imágenes de aves conocidas en el arte rupestre paleolítico de la Península Ibérica.

  1. Description and proposed life cycle of Maritrema novaezealandensis n. sp. (Microphallidae) parasitic in red-billed gulls, Larus novaehollandiae scopulinus, from Otago Harbor, South Island, New Zealand.

    Science.gov (United States)

    Martorelli, Sergio R; Fredensborg, Brian L; Mouritsen, Kim N; Poulin, Robert

    2004-04-01

    Maritrema novaezealandensis n. sp. is described from Otago Harbor, South Island, New Zealand, on the basis of adult specimens collected from the Red-billed gull, Larus novaehollandiae scopulinus, and excysted metacercariae obtained from crabs. It belongs to the "eroliae group" and differs from other related species mainly in the shape, size, and patterns of distributions of the spines on the cirrus, the shape of the metraterm, the presence of an unlobed ovary, and the complete ring of the vitelline follicles. Based on morphometric features of metacercariae and adult specimens, the trophic relationships among invertebrate and vertebrate hosts, experimental infections, and previous reports of species of Maritrema with similar transmission patterns, the life cycle of M. novaezealandensis n. sp. is described. A 3-host life cycle is proposed for this parasite. The first intermediate host is the mud snail, Zeacumantus subcarinatus, in which the cercarial stage is produced in sporocysts located within the gonad of the snail. At least 3 crab species (Hemigrapsus crenulatus, Macrophtalmus hirtipes, and Halicarcinus whitei) and several species of amphipods act as second intermediate hosts, with metacercariae encysted in the body cavity of the crustacean host. Finally, the definitive host, the gull, L. n. scopulinus, harbors the adult worms in its intestine.

  2. Nitrogen isotopic patterns of vegetation as affected by breeding activity of Black-tailed Gull (Larus crassiostris): A coupled analysis of feces, inorganic soil nitrogen and flora

    International Nuclear Information System (INIS)

    Mizota, C.

    2009-01-01

    Two currently breeding colonies (Matsushima Bay and Rishiri island; northern Japan) of predominant Black-tailed Gull (Larus crassiostris) were studied for N isotopic patterns of flora, which is affected by increased supply of inorganic soil N derived from the microbial transformation of feces. Coupled samples of feces, topsoil and flora were collected in early to mid July (2008), when input of fecal N onto soils was at its maximum. As bird migration and breeding continued, native Japanese red-pine (Pinus densiflora), junipers (Juniperus chinensis and Juniperus rigita; Matsushima Bay colony) and Sasa senanensis (Rishiri colony) declined, while ornithocoprophilus exotic plants succeeded. Among tree species on the islands, P. densiflora with ectomycorrizal colonization appears highly susceptible to elevated concentrations of NH 4 -N in the topsoil. A mechanism for best explaining the plant succession associated with the breeding activity of Black-tailed Gull was evidenced by two parameters: first, concomitant elevation of N content in the flora and second, inorganic soil N content, along with changes in N isotopic composition (δ 15 N). Earlier isotopic data on the foliar N affected by breeding activity were compiled and reviewed. Emphasis was put on isotopic information for inorganic N in soils that controls plant succession.

  3. A bumblefoot outbreak and fatal septicemia in captive aquatic birds in Brazil Surto de esparavão e septicemia fatal em aves aquáticas cativas no Brasil

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    Marcus Vinícius Romero Marques

    2009-09-01

    Full Text Available A bumblefoot outbreak with different prognosis according to host species was studied in captive aquatic avian species. Six wood ducks (Aix sponsa, three scarlet-ibis (Eudocimus ruber, two black-swans (Cygnus atratus, five white-faced ducks (Dendrocygna viduata and two roseate spoonbills (Platalea ajaja were kept in a common pen with abrasive pavement pond margin, predisposing to podal skin wear. Incoordination and mortality occurred in the two roseate spoonbils and one black swan. Coagulase-positive penicillin-resistant Staphylococcus aureus was isolated from the synovial fluid and from the liver. All birds sharing the pen presented active or cicatricial foot lesions, indicating a possible challenge to the environmental Staphylococci. However, except for the roseate spoonbill and the black swan, which had fatal disease, for all other species the case did not evolve to a clinically debilitating or fatal disease. The different susceptibility to a fatal Staphylococcus aureus coagulase positive infection is discussed.Este trabalho relata um surto de esparavão em aves aquáticas cativas com prognóstico variado conforme a espécie de ave. Foram examinados um marreco carolina (Aix sponsa, três guarás (íbis vermelha (Eudocimus ruber, dois cisnes negros (Cygnus atratus, cinco marrecas piadeiras (Dendrocygna viduata e dois colhereiros (Platalea ajaja mantidos em recinto comunitário, em cativeiro e em criatório. No recinto, a piscina é margeada por borda de cimento abrasivo que possibilita a abrasão da pele podal. Todas as aves apresentaram erosões da pele na face de apoio dos pés, indicando fator predisponente (erosão similar e possível semelhante desafio infeccioso. Entretanto, incoordenação e mortalidade ocorreram em colhereiros e no cisne negro, mas não nas outras espécies. Staphylococcus aureus coagulase positivo e resistente à penicilina foi isolado do líquido sinovial e do fígado das aves recém-mortas e conservadas em geladeira

  4. Seasonal changes in the use of marine food resources by Cinclodes nigrofumosus (furnariidae, aves: carbon isotopes and osmoregulatory physiology Cambios estacionales en el uso de recursos alimenticios marinos en Cinclodes nigrofumosus (furnariidae, aves: isótopos de carbono y fisiología osmoregulatoria

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    PABLO SABAT

    2005-06-01

    Full Text Available Passerines lack functional salt glands and to a large extent avoid feeding on marine invertebrates. An exception is Cinclodes nigrofumosus. Previous studies reported that the contents of its gastrointestinal tract had a lower osmolality than seawater suggesting that birds were supplementing their marine invertebrate diet with terrestrial invertebrates and fresh water at certain periods of the year. We report seasonal changes in the diet of C. nigrofumosus at two contrasting coastal localities in Central Chile and document the potential correlation between weather and feeding habits with osmoregulatory features in this species. We expected that C. nigrofumosus would increase its use of osmotically challenging marine dietary sources when fresh water is available. Animals were collected at El Quisco and Los Vilos from central Chile during the mist cool winter and during the hot and dry summer. Immediatly after capture several physiological and morphological variables were determined at the field. We used stable isotope analysis as a proxy variable to measure the relative contribution of marine and terrestrial sources to the diet of Cinclodes nigrofumosus. Our results support the notion that osmoregulatory factors constraint dietary selection: in both localities birds consumed more marine prey when environmental conditions were less stressing, i.e., when lower environment temperatures, higher humidity and more fresh water was available. Our results also indicate that osmoregulatory physiology does not respond in a similar fashion in both seasons and suggest that osmoregulatory physiology of birds is affected by environmental variables in a complex fashionLas aves paseriformes no poseen glándula de la sal funcional y en gran medida evitan el consumo de invertebrados marinos. Una excepción es Cinclodes nigrofumosus. Estudios previos han documentado que el contenido del tracto gastrointestinal posee una osmolalidad menor que el agua de mar, lo que

  5. Registro da pomba-do-orvalho Patagioenas maculosa (Aves: Columbidae no estado de Santa Catarina, sul do Brasil

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    Ivo Rohling Ghizoni-Jr

    2009-08-01

    Full Text Available http://dx.doi.org/10.5007/2175-7925.2009v22n2p195 Apresentamos o primeiro registro da pomba-do-orvalho Patagioenas maculosa (Aves: Columbidae para Santa Catarina, região sul do Brasil. Um indivíduo foi observado em 10 de setembro de 2006 em uma área aberta (pastagens para gado e vegetação arbustiva no município de Anita Garibaldi (centro-sul do estado. Sugerimos que este encontro pontual é resultado de uma recente expansão da distribuição desta espécie devido a modificações na paisagem nesta região.

  6. Aves explorando flores de Erythrina fusca (Leguminosae, Fabaceae durante a estação seca no Pantanal de Mato Grosso Exploitation of Erythrina fusca (Leguminosae, Fabaceae flowers by birds during the dry season in Pantanal of Mato Grosso, Brazil

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    Ricardo Parrini

    2010-06-01

    Full Text Available Estudos recentes têm evidenciado a importância de flores como recurso alimentar de diversas espécies de aves neotropicais. Este estudo teve o objetivo de listar espécies e descrever o comportamento das aves que se alimentaram de recursos florais de Erythrina fusca (Fabaceae no Pantanal Mato-Grossense. Para isso, foram acompanhadas aves que se alimentaram em 14 árvores floridas dessa espécie em um total de cerca de 25 horas de observação. Como resultados, 20 espécies de aves pertencentes a sete famílias taxonômicas foram observadas alimentando-se de recursos florais de E. fusca. Apesar de várias espécies de aves terem apresentado comportamentos destrutivos em maior proporção, algumas espécies, sobretudo das famílias Trochilidae e Icteridae, apresentaram estratégias alimentares compatíveis com o transporte de pólen. O cruzamento dos dados obtidos neste estudo com os da literatura indicam que a família Icteridae pode ter relevante papel na polinização dessa espécie vegetal.Recent studies reported the importance of flowers in the diet of many Neotropical bird species. In this paper we identify and describe the feeding behaviour of bird species that feed on flower resources of Erythrina fusca (Fabaceae in the Pantanal Mato-Grossense, Brazil. We recorded birds foraging in 14 flowered individuals of E. fusca during 25 hours of observation. We recorded 20 bird species belonging to seven families feeding on the flowers. Several of the observed behaviours were destructive, despite some species, especially the Trochilidae and Icteridae, showed feeding strategies that preserve the integrity of the flowers and are compatible with pollen transportation. The comparison of the data gathered in this study with the available literature indicates that the Icteridae may play an important role in pollination of this tree species.

  7. Comment: 123 [Taxonomy Icon

    Lifescience Database Archive (English)

    Full Text Available black-headed gull Larus ridibundus Larus_ridibundus_L.png ユリカモメ Larus ridibundus 写真...を小さくしてアップしているので、大きいのが必要でしたら言ってください。 (他の写真も同様) nakazato 2008/12/22 09:55:59 2009/06/17 20:06:01 ...

  8. Anatomy and histochemistry of spread-wing posture in birds. 2. Gliding flight in the California gull, Larus californicus: a paradox of fast fibers and posture.

    Science.gov (United States)

    Meyers, R A; Mathias, E

    1997-09-01

    Gliding flight is a postural activity which requires the wings to be held in a horizontal position to support the weight of the body. Postural behaviors typically utilize isometric contractions in which no change in length takes place. Due to longer actin-myosin interactions, slow contracting muscle fibers represent an economical means for this type of contraction. In specialized soaring birds, such as vultures and pelicans, a deep layer of the pectoralis muscle, composed entirely of slow fibers, is believed to perform this function. Muscles involved in gliding posture were examined in California gulls (Larus californicus) and tested for the presence of slow fibers using myosin ATPase histochemistry and antibodies. Surprisingly small numbers of slow fibers were found in the M. extensor metacarpi radialis, M. coracobrachialis cranialis, and M. coracobrachialis caudalis, which function in wrist extension, wing protraction, and body support, respectively. The low number of slow fibers in these muscles and the absence of slow fibers in muscles associated with wing extension and primary body support suggest that gulls do not require slow fibers for their postural behaviors. Gulls also lack the deep belly to the pectoralis found in other gliding birds. Since bird muscle is highly oxidative, we hypothesize that fast muscle fibers may function to maintain wing position during gliding flight in California gulls.

  9. A apropriação e transformação de As Aves, de Aristófanes, por Paul Muldoon

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    Munira H Mutran

    2003-11-01

    Full Text Available Um texto como As Aves, de Aristófanes, produzido em Dionísia em 414 a.C., é passível de diferentes leituras e interpretações. Este artigo examina as relações intertextuais entre o original grego e sua recente tradução pelo poeta irlandês Paul Muldoon; investiga, também, como os motivos predominantes de guerra, política, corrupção e utopia tornaram-se significativos na tradução de 1999.

  10. Estructura de la comunidad y asociación de las aves acuáticas con la heterogeneidad espacial del complejo lagunar Bahía Magdalena-Almejas, Baja California Sur, México

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    Bulmara Zárate-Ovando

    2008-03-01

    Full Text Available Para probar la hipótesis que la heterogeneidad espacial determina la diversidad de aves acuáticas en un humedal costero, comparamos la densidad, diversidad y composición de especies de aves acuáticas entre habitats y otras unidades de paisaje del complejo Bahía Magdalena-Almejas, Baja California Sur, México. Se realizaron censos de aves acuáticas en 329 segmentos de habitat de la línea de costa interna del complejo lagunar, desde febrero 2002 hasta febrero 2003. La densidad de aves fue mayor en invierno y otoño en las tres lagunas del área de estudio; de las zonas, la densidad fue mayor en la costa insular; y de los habitats en playa arenosa y dunas pero en los pocos segmentos de sustrato antrópico la densidad fue alta. La diversidad fue significativamente mayor en otoño; en Canal Santo Domingo; en la costa peninsular; y de los habitats en manglar-dunas y manglar. La modificación del habitat natural costero y el disturbio por tránsito de embarcaciones no tuvieron influencia en la densidad o diversidad de aves acuáticas, pero la riqueza acumulada mayor ocurrió en las costas bien conservadas y sin disturbio. El análisis de la composición de especies mostró diferencias entre las asociaciones de Canal Santo Domingo y Bahía Magdalena. El ambiente pelágico y el manglar tuvieron diferencia mayor en la composición de especies con respecto a las asociaciones de los demás habitats, tales diferencias en elencos de especies por habitat sugieren que la comunidad de aves está estructurada de acuerdo a los recursos naturales disponibles de las lagunas, zonas y habitats, en relación con la complejidad estructural de las unidades de paisaje. Las condiciones ecológicas del complejo lagunar ocasionan que las aves acuáticas piscívoras sean el grupo dominante de esta comunidad.Community structure and association of waterbirds with spatial heterogeneity in the Bahía Magdalena-Almejas wetland complex, Baja California Sur, Mexico. To test

  11. Molecular phylogeny of the spoonbills (Aves: Threskiornithidae) based on mitochondrial DNA

    Science.gov (United States)

    Chesser, R. Terry; Yeung, Carol K.L.; Yao, Cheng-Te; Tian, Xiu-Hua; Li, Shou-Hsien

    2010-01-01

    Spoonbills (genus Platalea) are a small group of wading birds, generally considered to constitute the subfamily Plataleinae (Aves: Threskiornithidae). We reconstructed phylogenetic relationships among the six species of spoonbills using variation in sequences of the mitochondrial genes ND2 and cytochrome b (total 1796 bp). Topologies of phylogenetic trees reconstructed using maximum likelihood, maximum parsimony, and Bayesian analyses were virtually identical and supported monophyly of the spoonbills. Most relationships within Platalea received strong support: P. minor and P. regia were closely related sister species, P. leucorodia was sister to the minor-regia clade, and P. alba was sister to the minor-regia-leucorodia clade. Relationships of P. flavipes and P. ajaja were less well resolved: these species either formed a clade that was sister to the four-species clade, or were successive sisters to this clade. This phylogeny is consistent with ideas of relatedness derived from spoonbill morphology. Our limited sampling of the Threskiornithinae (ibises), the putative sister group to the spoonbills, indicated that this group is paraphyletic, in agreement with previous molecular data; this suggests that separation of the Threskiornithidae into subfamilies Plataleinae and Threskiornithinae may not be warranted.

  12. Niche evolution and diversification in a Neotropical radiation of birds (Aves: Furnariidae).

    Science.gov (United States)

    Seeholzer, Glenn F; Claramunt, Santiago; Brumfield, Robb T

    2017-03-01

    Rapid diversification may be caused by ecological adaptive radiation via niche divergence. In this model, speciation is coupled with niche divergence and lineage diversification is predicted to be correlated with rates of niche evolution. Studies of the role of niche evolution in diversification have generally focused on ecomorphological diversification but climatic-niche evolution may also be important. We tested these alternatives using a phylogeny of 298 species of ovenbirds (Aves: Furnariidae). We found that within Furnariidae, variation in species richness and diversification rates of subclades were best predicted by rate of climatic-niche evolution than ecomorphological evolution. Although both are clearly important, univariate regression and multivariate model averaging more consistently supported the climatic-niche as the best predictor of lineage diversification. Our study adds to the growing body of evidence, suggesting that climatic-niche divergence may be an important driver of rapid diversification in addition to ecomorphological evolution. However, this pattern may depend on the phylogenetic scale at which rate heterogeneity is examined. © 2017 The Author(s). Evolution © 2017 The Society for the Study of Evolution.

  13. Noteworthy bird records at Lagoa Santa, southeastern Brazil Registros notáveis de aves em Lagoa Santa, sudeste do Brasil

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    Marcos Rodrigues

    2008-03-01

    Full Text Available Lagoa Santa, a small town in southeastern Brazil where naturalist Peter Lund lived, is regarded nowadays as an important historical site for the biological sciences. From 1847 to 1855, J.T. Reinhardt, hosted by Lund, collected 343 bird species. This material is an outstanding reference for many modern ornithological studies. The present paper reports the occurrence of some rare and threatened birds for the region of Lagoa Santa between 1998 and 2005. In this account I list the Rusty-margined Guan Penelope superciliaris Temminck, 1815; the Roseate Spoonbill Platalea ajaja Linnaeus, 1758; the Maguari Stork Ciconia maguari (Gmelin, 1789; the Wood Stork Mycteria americana Linnaeus, 1758; the Black Hawk-eagle Spizaetus tyrannus (Wied, 1820 and the Turquoise-fronted Parrot Amazona aestiva (Linnaeus, 1758. It is also reported the southernmost record for the Blue-and-yellow Macaw Ara ararauna (Linnaeus, 1758 and the range extension of the Crowned Slaty flycatcher Griseotyrannus aurantioatrocristatus (d'Orbigny and Lafresnaye, 1837. These data can be used as a baseline for studies of colonization and extinction.Lagoa Santa, cidade onde viveu Peter Lund é um dos sítios de maior importância histórica para as ciências biológicas. Durante os anos de 1847 e 1855, J.T. Reinhardt, a convite de Lund, coletou 343 espécies de aves que são hoje referência para vários estudos ornitológicos. O presente artigo relata a ocorrência de algumas aves raras e/ou ameaçadas para a região de Lagoa Santa, entre 1998 e 2005. A lista de espécies inclui a jacupemba Penelope superciliaris Temminck, 1815, o colhereiro Platalea ajaja Linnaeus, 1758, a maguari Ciconia maguari (Gmelin, 1789, a cabeça-seca Mycteria americana Linnaeus, 1758, o gavião-pega-macaco Spizaetus tyrannus (Wied, 1820; e o papagaio-verdadeiro Amazona aestiva (Linnaeus, 1758. Relata-se também a ocorrência mais meridional da arara-canindé Ara ararauna (Linnaeus, 1758, e a expansão da distribui

  14. Mercury and other metals in eggs and feathers of glaucous-winged gulls (Larus glaucescens) in the Aleutians

    Science.gov (United States)

    Gochfeld, Michael; Jeitner, Christian; Burke, Sean; Volz, Conrad D.; Snigaroff, Ronald; Snigaroff, Daniel; Shukla, Tara; Shukla, Sheila

    2014-01-01

    Levels of mercury and other contaminants should be lower in birds nesting on isolated oceanic islands and at high latitudes without any local or regional sources of contamination, compared to more urban and industrialized temperate regions. We examined concentrations of arsenic, cadmium, chromium, lead, manganese, mercury and selenium in the eggs, and the feathers of fledgling and adult glaucous-winged gulls (Larus glaucescens) nesting in breeding colonies on Adak, Amchitka, and Kiska Islands in the Aleutian Chain of Alaska in the Bering Sea/North Pacific. We tested the following null hypotheses: 1) There were no differences in metal levels among eggs and feathers of adult and fledgling glaucous-winged gulls, 2) There were no differences in metal levels among gulls nesting near the three underground nuclear test sites (Long Shot 1965, Milrow 1969, Cannikin 1971) on Amchitka, 3) There were no differences in metal levels among the three islands, and 4) There were no gender-related differences in metal levels. All four null hypotheses were rejected at the 0.05 level, although there were few differences among the three test sites on Amchitka. Eggs had the lowest levels of cadmium, lead, and mercury, and the feathers of adults had the lowest levels of selenium. Comparing only adults and fledglings, adults had higher levels of cadmium, chromium, lead and mercury, and fledglings had higher levels of arsenic, manganese and selenium. There were few consistent interisland differences, although levels were generally lower for eggs and feathers from gulls on Amchitka compared to the other islands. Arsenic was higher in both adult feathers and eggs from Amchitka compared to Adak, and chromium and lead were higher in adult feathers and eggs from Adak compared to Amchitka. Mercury and arsenic, and chromium and manganese levels were significantly correlated in the feathers of both adult and fledgling gulls. The feathers of males had significantly higher levels of chromium and

  15. THE ADVERTISING-VALUE-EQUIVALENT (AVE METHOD IN QUANTIFYING ECONOMIC VALUES OF PUBLIC RELATIONS ACTIVITIES: EXPERIENCE OF A PUBLIC-LISTED COMPANY IN MALAYSIA

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    Musa Abu Hassan

    2006-01-01

    Full Text Available Why should public relations (PR not be evaluated for its economic value? Despite the point of its social or intangible values, the argument goes on and on in most management meetings where PR practitioners always face the challenges of justifying their worth – often in monetary terms. In an open dialogue with Grunig during his visit to Malaysia in 2004, this renowned PR guru also expressed the difficulty of quantifying the actual PR worth. It is best to qualify PR values by assessing its priceless relationships with the company’s stakeholders. However, in our routine business life, especially at the middle management level, the above question seems unavoidable. In enhancing excellence for PR and communication management, Ehling (1992 placed the logic underlying the economic values of PR on the relationship between benefits and costs associated with the implementation of a PR programme. The above question and problem serve as the main objective of this article. In exploring the solutions for the quantification of PR values in Malaysia, economic education is taken as a remedy for the absence of knowledge and skills in making intelligent decisions in the marketplace (Baskin et al., 1997; Lattimor et al., 2004. In this research context, the researchers (a combination of a practitioner and an academician respectively confined the scope to the experience of a selected public-listed company for its PR campaign implemented in 2004. Quantification was attempted by evaluating the assessment in print media exposures. All earned media coverage for that particular PR campaign was measured for the media type, space, position, and the corresponding advertising rate. Monetary value was assigned to every single piece of PR news in the way disbursements are made to paid media for advertising activities. The explication of this advertising-value-equivalent (AVE method in quantifying economic values for PR news with regard to the selected campaign was made

  16. Relação entre Triatoma infestans, aves domésticas e o homem num povoado de Santiago del Estero, Argentina The relationship between Triatoma infestans, poultry, and humans in a rural settlement in Santiago del Estero, Argentina

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    Patrícia P. Gajate

    1994-03-01

    Full Text Available Determinou-se a associação entre Triatoma infestans, aves domésticas e o homem no povoado de Trinidad, Santiago del Estero, Argentina. Para coletar triatomíneos foram realizadas quatro amostragens no peridomicílio de seis casas, utilizando-se o método de captura hora/homem (dezembro de 1991 a outubro de 1992. Os anexos foram classificados em antrópicos (onde o homem realiza atividades cotidianas e não-antrópicos. Além disso, determinou-se o perfil alimentar dos barbeiros. De um total de 134 ecótopos investigados, 21% tinham T. infestans; 22% possuíam aves domésticas; e 54% eram antrópicos. Em 25% destes ecótopos foram encontradas aves e T. infestans simultaneamente. As aves foram os únicos animais domésticos associados com o T. infestans, sendo que esta relação só ocorreu nos ecótopos antrópicos. A proporção de ingestas em aves (61/146 foi altamente significativa. Em Trinidad não há galinheiros, utilizando-se, assim, os anexos entrópicos do peridomicílio como local para se construir os ninhos para as aves. tanto pelos elementos usados na preparação dos ninhos como pelo uso posterior dos mesmos, poder-se-ia estabelecer um fluxo periódico de barbeiros do intradomicílio para o peridomicílio, e vice-versa, através do transporte passivo. Esta relação estreita entre Triatoma infestans, aves domésticas e o homem, encontrada nos ecótopos antrópicos, onde também existem outros reservatórios de T. cruzi, como os cães, favorece a manutenção de colônias de barbeiros domiciliares e a transmissão da doença de Chagas ao homem.An association was determined between Triatona infestans, poultry, and humans in Trinidad, in the Province of Santiago del Estero, Argentina. To collect triatomines, four samples were taken at the area immediately surrounding six houses by the one hour/man capture method (December 1991 - October 1992. Peridomiciliary ecotopes were classified as arthropic (where humans carry out daily

  17. Temporal changes in tree-ring nitrogen of Pinus thunbergii trees exposed to Black-tailed Gull (Larus crassirostris) breeding colonies

    Energy Technology Data Exchange (ETDEWEB)

    Larry, Lopez C.M., E-mail: larry@iwate-u.ac.jp [United Graduate School of Agricultural Sciences, Iwate University, Morioka 020-8550 (Japan); Chitoshi, Mizota [Faculty of Agriculture, Iwate University, Morioka 020-8550 (Japan); Toshiro, Yamanaka [Division of Earth Science, Graduate School of Natural Science and Technology, Okayama University, 1-1, Naka 3-Chome, Tsushima, Okayama 700-8530 (Japan); Yoshihiro, Nobori [Faculty of Agriculture, Yamagata University, 1-23 Wakabamachi, Tsuruoka, Yamagata 997-8555 (Japan)

    2010-11-15

    Research highlights: {yields} N concentration and isotope ratio on tree-rings can be an important tool to infer past N soil conditions where trees grow. {yields} Changes in avian population on established or new breeding grounds caused by natural or anthropogenic mechanism could be inferred from the analysis shown in this paper. {yields} The property of trees to retain N concentration and N isotope characteristics is found in Pinus thunbergii. The use of other trees for similar analysis have to be determined because other species (Pinus densiflora, for example) do not have this property. - Abstract: Natural abundances of {sup 15}N/{sup 14}N ratios (commonly designated by {delta}{sup 15}N notation) of annual rings from Pinus thunbergii trees were determined after transplantation from a nursery to breeding colonies of Black-tailed Gull (Larus crassirostris) in Miyagi and Aomori and a control site in Yamagata, in northeastern Japan. Tree-rings were collected in July/August/September, 2009. Transplanting was conducted in the year 2000 in the Miyagi site, whereas there is no information about transplanting data in the Aomori and Yamagata sites. Soils associated with piscivorous (fish eating) avian colonies receive large seasonal input of organic N in the form of feces. The organic N is microbiologically transformed into inorganic N in soils, from which P. thunbergii derives its N. The resulting NH{sub 4}{sup -} and NO{sub 3}{sup -}N are characterized by distinctly heavy {delta}{sup 15}N ratios, due to coupled processes of mineralization, volatilization, nitrification and denitrification of feces. In general, total N concentration along with {delta}{sup 15}N values stored in the annual rings of P. thunbergii increased steadily after transplanting from the nursery to locations under continued avian N input. Tree-ring N content and isotopic ratios provided a reliable record of past annual available soil N caused by changes in the Black-tailed Gull population, and thus can

  18. Presencia de campylobacter jejuni en aves de corral y sus manipuladores

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    Fabio Carmona

    1985-12-01

    Full Text Available En una granja procesadora de aves en la ciudad de Cali, donde se sacrifican 12.000 animales diarios, se escogió para buscar Campylobacter jejuni una muestra de 120 pollos tomando como base una prevalencia del 80% y empleando un muestreo sistemático para dar una mayor cobertura teniendo en cuenta que la procedencia de los animales variaba diariamente. El porcentaje de positividad en materia fecal fue de 98.33% (118/120. Con la finalidad de averiguar el grado de higiene empleado en la manipulación de las canales, se frotó la superficie de ellos antes y después de introducirle las vísceras que es sabido van dentro del pollo al llegar al consumidor; se encontró que las canales con vísceras estaban contaminadas en un 18.33% (11/60 mientras que antes de este procedimiento la contaminación tan solo fue del 8.33% (5/60. También fueron examinadas 62 personas para buscar en ellas el C. jejuni encontrhndose en 5 (8.06% la bacteria. A todas las cepas aisladas se les probó la sensibilidad a la eritromicina usando disco de 15 Ug observándose un 100% de sensibilidad a la droga.

  19. Características técnico-sanitarias de expendios de carnes, pescados, aves y huevos de la ciudad de Tunja 2003

    OpenAIRE

    Fred Gustavo Manrique-Abril; Diego Alexander Manrique-Abril; Pablo Fernandez; Elena Patricia Castro-Montaña

    2011-01-01

    Se presenta una caracterización epidemiológica de los expendios de carnes, pescado y aves de Tunja en el año 2003, resultado del diagnóstico sanitario del municipio y las visitas adelantadas por la unidad de saneamiento. Al partir del compromiso que el sector salud tiene en el componente de ambiente, surge la necesidad de crear un sistema de vigilancia epidemiológica ambiental, cuya metodología y estrategia esté orientada hacia el conocimiento de los factores de riesgo ambientales a que están...

  20. Variación temporal y espacial de aves playeras en la laguna Barra de Navidad, Jalisco, en tres temporadas no reproductivas Temporal and spatial variation of shorebirds in Barra de Navidad lagoon, Jalisco, during three non-breeding seasons

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    Salvador Hernández

    2012-09-01

    Full Text Available Hay un escaso conocimiento de las aves playeras en los humedales costeros de Jalisco, y en particular en la laguna Barra de Navidad. El presente trabajo contribuye al conocimiento de este grupo de aves y describe su distribución temporal y espacial en la laguna Barra de Navidad durante tres temporadas no reproductivas (1999-2000, 2006-2007 y 2008-2009. Se realizaron censos mensuales de noviembre-abril en las tres temporadas con el fin de registrar todas las especies de aves playeras. Se identificaron 19 especies (tres residentes y 16 visitantes de invierno, de las cuales Charadrius wilsonia, Limosa fedoa y Tringa semipalmata presentaron la mayor abundancia. Doce especies son consideradas como prioritarias en la “Estrategia para la Conservación y Manejo de las Aves Playeras y su Hábitat en México”. El mayor número de especies fue registrado en noviembre, diciembre y marzo en la primera y tercera temporada. El mayor número de individuos fue registrado alimentándose en marea baja, principalmente en diciembre, enero y febrero de la primera y tercera temporada. En marea baja hubo un mayor número de especies e individuos alimentándose en la zona C. Esta zona se caracterizó por tener sustratos lodosos expuestos durante marea baja y que fueron aprovechados por las aves para alimentarse. La laguna Barra de Navidad proporcionó hábitats de alimentación y descanso para las aves residentes y migratorias. Sin embargo, estos hábitats se ven amenazados por las actividades humanas realizadas dentro de la laguna, que sin duda tendrán consecuencias negativas para la distribución y abundancia de las aves playeras.Resident and migratory shorebirds inhabit different kinds of wetlands such as lagoons, rivers and seashores among others. In recent years, these areas have been importantly affected by urban, agriculture and touristic activities, such as the Barra de Navidad lagoon, for which little information is available to support conservation

  1. The relative contribution of fruits and arthropods to the diet of three trogon species (Aves, Trogonidae in the Brazilian Atlantic Forest A contribuição relativa de frutos e artrópodes para a dieta de três espécies de surucuás (Aves, Trogonidae na Mata Atlântica

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    Marco Aurélio Pizo

    2007-06-01

    Full Text Available Trogons are pan-tropical forest birds that eat a mix of fruits and arthropods. With direct observations of wild feeding birds, I assessed the relative contribution of fruits and arthropods to the diet of three trogon species (Trogonviridis, T.surrucura, and T.rufus at Parque Estadual Intervales, southeast Brazil. Fruits and arthropods made the bulk of the food items recorded, with a tendency of frugivory increasing with body mass. The Trogon species differed in the proportion of fruits and arthropods taken, with T.viridis being the most frugivorous species (66% of feeding bouts, n = 47. The relative contribution of fruits and arthropods did not differ between the wet and dry seasons for any species. In the omnivorous gradient, T.viridis is close to the frugivorous extreme, whereas T.surrucura and T.rufus is next to the insectivorous end. Such a distinction may have important consequences for the territoriality and social behavior of these birds.Os surucuás são aves florestais pantropicais que se alimentam de frutos e artrópodes. Com observações diretas de aves forrageando na natureza, estudei a contribuição relativa de frutos e artrópodes para a dieta de três espécies de surucuás (Trogonviridis, T.surrucura, and T.rufus no Parque Estadual Intervales, sudeste do Brasil. Frutos e artrópodes foram os itens mais registrados, com uma tendência do grau de frugivoria aumentar com o aumento da massa corporal da ave. As três espécies diferiram em relação à proporção de frutos e artrópodes de que se alimentam; T.viridisfoi a espécie mais frugívora (66% dos registros, n = 47. As contribuições relativas de frutos e artrópodes para a dieta não diferiram entre as estações seca e úmida para nenhuma das três espécies. A diferença no grau de frugivoria aqui revelada pode ter conseqüências importantes para a territorialidade e organização social dos surucuás.

  2. Resíduos de aves e suínos: Potencialidades

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    Tiago Luan Hachmann

    2014-05-01

    Full Text Available O crescimento intenso da população mundial aumenta a demanda por alimentos. As carnes de frango e de suíno são as fontes mais exploradas de proteína na alimentação humana. Porém, com os métodos intensivos de produção, esses sistemas tem gerado insatisfação quanto ao aspecto ambiental e tem sido questionados quanto à sua sustentabilidade. A disposição inadequada dos resíduos gerados nos criatórios de suínos e aves afeta diretamente a qualidade do meio ambiente e a saúde pública. Assim deve-se buscar alternativas para minimizar os impactos causados ao meio, melhorando o aproveitamento e destinação desses resíduos. A aplicação desses resíduos nas áreas de produção agrícola é favorável à, tendo em vista que são uma fonte de nutrientes de grande demanda pelas culturas. Além disso é uma forma sustentável para destinação dos resíduos, já que promove seu reaproveitamento de forma a não poluir o ambiente e com alto retorno econômico. Dessa forma é possível aliar preservação ambiental com progresso econômico, promovendo uma produção sustentável.

  3. Field Metabolic Rate Is Dependent on Time-Activity Budget in Ring-Billed Gulls (Larus delawarensis Breeding in an Anthropogenic Environment.

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    Sarah C Marteinson

    Full Text Available Environmental and behavioral factors have long been assumed to affect variation in avian field metabolic rate (FMR. However, due to the difficulties in measuring continuous behavior of birds over prolonged periods of time, complete time-activity budgets have rarely been examined in relation to FMR. Our objective was to determine the effect of activity (measured by detailed time-activity budgets and a series of extrinsic and intrinsic factors on FMR of the omnivorous ring-billed gull (Larus delawarensis. The experiment was conducted during the incubation period when both members of the pair alternate between attending the nest-site and leaving the colony to forage in aquatic and anthropogenic environments (city, agricultural. FMR was determined using the doubly labeled water method. Time-activity budgets were extrapolated from spatio-temporal data (2-5 days obtained from bird-borne GPS data loggers. Gulls had low FMRs compared to those predicted by allometric equations based on recorded FMRs from several seabird species. Gulls proportioned their time mainly to nest-site attendance (71% of total tracking time, which reduced FMR/g body mass, and was the best variable explaining energy expenditure. The next best variable was the duration of foraging trips, which increased FMR/g; FMR/g was also elevated by the proportion of time spent foraging or flying (17% and 8% of tracking time respectively. Most environmental variables measured did not impact FMR/g, however, the percent of time birds were subjected to temperatures below their lower critical temperature increased FMR. Time-activity budgets varied between the sexes, and with temperature and capture date suggesting that these variables indirectly affected FMR/g. The gulls foraged preferentially in anthropogenic-related habitats, which may have contributed to their low FMR/g due to the high availability of protein- and lipid-rich foods. This study demonstrates that activities were the best

  4. COEXISTENCIA TRÓFICA DE AVES CARPINTERAS (Picidae EN UN BOSQUE DE Pinus cembroides (Zucc. DEL ÁREA NATURAL PROTEGIDA PEÑA ALTA, SAN DIEGO DE LA UNIÓN, GUANAJUATO

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    Saúl Ugalde-Lezama

    2011-01-01

    Full Text Available Estudiar la coexistencia trófica en aves es relevante para su manejo y conservación. Para ello, de enero a octubre de 2008 se identificaron técnicas de cacería y componentes entomológicos de las dietas de aves piciformes. Para la observación de las aves se usó la técnica de búsqueda intensiva en puntos de radio fijo, y para su captura, redes de niebla. Melanerpes formicivorous y Picoides scalaris prefirieron las técnicas de cacería Perforar y Colectar. Dichas técnicas se explicaronpor cinco y cuatro variables (P<0.05, respectivamente. Los estratos más utilizados fueron Pinus cembroides y Quercus spp. Los órdenes de insectos más consumidos fueron Coleóptera y Hemíptera. Las principales familias registradas corresponden a Scolytidae, Curculionidae, Pentatomidae, Cicadellidae, Cleridae y Melyridae. Los insectos más consumidos fueron los tipo Plaga (P, No Plaga (NP y Predadores (PR. Se registró una proporción significativa de individuos (X2=9.19, X2 0.001(5=20.5 de insectos en las dietas. Sin embargo, no fue posible registrar todos los fragmentos (X2=56.33, X2 0.001(5=20.5. El número de individuos (a=0.05, P-value=0.2317 y fragmentos (a=0.05, P-value=0.2606 entre especies fue similar. Siete variables (P<0.05 determinaron la ocurrencia de grasa y el consumo de presas. Los Picidos bajo estudio, a pesar de poseer anatomías, fisiologías y etologías similares, coexistieron tróficamente segregados durante la procuración alimenticia, minimizando de esta manera la competencia interespecífica.

  5. Population structure of the soft tick Ornithodoros maritimus and its associated infectious agents within a colony of its seabird host Larus michahellis

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    Marlene Dupraz

    2017-08-01

    Full Text Available The epidemiology of vector-borne zoonoses depends on the movement of both hosts and vectors, which can differ greatly in intensity across spatial scales. Because of their life history traits and small size, vector dispersal may be frequent, but limited in distance. However, little information is available on vector movement patterns at local spatial scales, and particularly for ticks, transmitting the greatest diversity of recognized infectious agents. To test the degree to which ticks can disperse and disseminate pathogens at local scales, we investigated the temporal dynamics and population structure of the soft tick Ornithodoros maritimus within a colony of its seabird host, the Yellow-legged gull Larus michahellis. Ticks were repeatedly sampled at a series of nests during the host breeding season. In half of the nests, ticks were collected (removal sampling, in the other half, ticks were counted and returned to the nest. A subsample of ticks was screened for known bacteria, viruses and parasites using a high throughput real-time PCR system to examine their distribution within the colony. The results indicate a temporal dynamic in the presence of tick life stages over the season, with the simultaneous appearance of juvenile ticks and hatched chicks, but no among-nest spatial structure in tick abundance. Removal sampling significantly reduced tick numbers, but only from the fourth visit onward. Seven bacterial isolates, one parasite species and one viral isolate were detected but no spatial structure in their presence within the colony was found. These results suggest weak isolation among nests and that tick dispersal is likely frequent enough to quickly recolonize locally-emptied patches and disseminate pathogens across the colony. Vector-mediated movements at local scales may therefore play a key role in pathogen emergence and needs to be considered in conjunction with host movements for predicting pathogen circulation and for establishing

  6. USO DA TERAPIA ESPELHO NA AMPLITUDE DE MOVIMENTO E FUNÇÃO DO MEMBRO INFERIOR EM PACIENTES HEMIPARÉTICOS PÓS-AVE

    OpenAIRE

    Livia Danyelle Viana Lima; Bruno Vieira Cortez; Janaína de Moraes Silva

    2017-01-01

    Resumo: O exercício associado a terapia espelho potencializa a retenção de habilidades, melhorando o desempenho de atividades motoras de indivíduos hemiparéticos pós-AVE. Este estudo objetivou a análise do efeito da terapia espelho na amplitude de movimento e funcionalidade do membro inferior. Amostra composta de 11 participantes, com hemiparesia em membro inferior, submetidas a fisioterapia convencional. A intervenção constituiu de 10 atendimentos, 30 minutos diários e três vezes por semana....

  7. Adaptaciones musculares relacionadas a áreas corporales que participan activamente en el vuelo de Anhima cornuta (Aves: Anseriformes, Anhimidae

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    Marcos Antonio Manzanares

    2013-04-01

    Full Text Available La forma y correspondencia entre la anatomía muscular y ósea revela en gran medida el hábito locomotor de cualquier ave. Las especies pertenecientes a la Familia Anhimidae son relevantes dentro de las Aves, debido a las adaptaciones óseas (y por lo tanto, musculares que presentan, como la pérdida de procesos uncinados, el desarrollo de espolones metarcapales, la extrema neumatización y el notable desarrollo de forámenes. Se analizaron anatómicamente y numéricamente (superficie de origen e inserción, longitud en reposo y masa los componentes musculares relacionados a las zonas de la columna vertebral, tronco, miembros y cinturas de tres ejemplares de Anhima cornutade distintos sexos y se compararon con lo estudiado en 4 ejemplares de especies relacionadas (Dendrocygna bicolory Dendrocygna viduata, Anatidae. El estudio reveló que en Anhima existe un gran desarrollo de los músculos intercostales e intervertebrales (torácicos y lumbares, evidenciando una adaptación a la ausencia de procesos uncinados. En Anhimaexisten fascículos proporcionalmente menos pesados y de menor tamaño que en Dendrocygna, indicando morfológicamente la ocurrencia de un vuelo menos desarrollado en el primero. Algunos tendones y fibras musculares metacarpales cuya inserción ocurre en el primer dígito en Dendrocygna, en Anhimase insertan en la base de los espolones proximal y distal, demostrando el poco control del vuelo en Anhima. La musculatura de los miembros posteriores en Anhimaes mucho más desarrollada, tanto en tamaño, como en masa proporcional, evidenciando una gran actividad en esta zona en la propulsión del vuelo y en hábitos terrestres

  8. Abundance of two Dendrocincla woodcreepers (aves: Dendrocolaptidae in relation to forest structure in Central Amazonia O uso do habitat por duas espécies de arapaçus Dendrocincla (aves: Dendrocolaptidae em relação a estrutura da floresta na Amazônia Central

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    Renato Cintra

    2006-01-01

    Full Text Available Few studies have been conducted to verify how the structure of the forest affects the occurence and abundance of neotropical birds. Our research was undertaken between January 2002 and July 2004 at the Reserva Ducke, near Manaus (02º55',03º01'S; 59º53',59º59'W in central Amazonia, to verify how the forest structure affects the occurrence and abundance of two bird species: the Plain-brown Woodcreeper Dendrocincla fuliginosa and the White-chinned Woodcreeper Dendrocincla merula. Bird species occurrence was recorded using lines of 20 mist-nets (one sample unit, along 51 1-km transects distributed along 9 pararel 8 km trails covering an area of 6400 ha. Along these transects, we placed 50 x 50m plots where we recorded forest structure components (tree abundance, canopy openness, leaf litter, standing dead trees, logs, proximity to streams, and altitude. We then related these variables to bird occurence and abundance using multiple logistic and multiple linear regression models, respectively. We found that D. fuliginosa frequently used plateau areas; being more abundant in areas with more trees. On the other hand, D. merula occurred more frequently and was more abundant in areas with low tree abundance. Our results suggest that although both species overlap in the reserve (both were recorded in at least 68% of the sampled sites, they differ in the way they use the forest microhabitats. Therefore, local variation in the forest structure may contribute to the coexistence of congeneric species and may help to maintain local alpha diversity.Em florestas neotropicais, poucos estudos tem sido conduzidos para verificar como a estrutura da floresta afeta o uso desse ambiente por aves. Este estudo foi realizado entre Janeiro de 2002 e Julho de 2004 na Reserva Ducke próximo a Manaus (02º55',03º01'S; 59º53',59º59'W, para verificar como a estrutura da floresta afeta a ocorrência e abundância de duas espécies de aves: o Arapaçu-pardo, Dendrocincla

  9. Inventario de las aves de un bosque altoandino: comparación de dos métodos

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    Stiles Hurd Frank Galfierd

    1998-06-01

    Full Text Available Capturing birds with mist-nets has been the sole method used or proposed for making species inventories of several Neotropical forests, but this method has rarely been evaluated relative to the use of visual and auditory observations in these forests. This study compares the effectiveness and efficiency of these two methods in the elaboration of the list of bird species on a 15 ha study plot of forest and subparamo vegetation in the Eastern Andes of Colombia. Over ten months we made 11 visits of 4-6 days each, observing and running nets along ca. 3 km of study trails. Of 102 total species recorded, 101 were observed and 50 captured; 52 were observed but not captured vs. only one that was only recorded with the nets. The observations were more efficient in accumulating species, with a mean of 68.4 per visit vs. 17.1 species captured. More than half of the species observed had been recorded after a single visit, and over 90% in six visits; the corresponding figures for mist-net captures were four and nine visits. Compared with the totallist, the mist net sample was biased towards small species « 50 g; some diet groups or foraging guilds were over- or underrepresented in this sample. We conclude that visual and auditory observations are more effective and efficient for making inventories of birds in these forests. Mist nets are a useful supplement to these observations, but not a substitute; their greatest utility lies in obtaining other sorts of data.La captura con redes de niebla ha sido utilizada o propuesta como método único para realizar inventarios de aves en varios bosques neotropicales, pero pocas veces ha sido evaluado en este medio en relación a otros métodos como el de las observaciones visuales y auditivas. Este estudio compara la efectividad y eficiencia de estos dos métodos en la elaboración de la lista de las especies de aves de una parcela de 15 ha de bosque altoandino y subpáramo en la Cordillera Oriental de Colombia

  10. Recurrent hybridization and recent origin obscure phylogenetic relationships within the ‘white-headed’ gull (Larus sp.) complex

    Science.gov (United States)

    Sonsthagen, Sarah A.; Wilson, Robert E.; Chesser, Terry; Pons, Jean-Marc; Crochet, Pierre-Andre; Driscoll, Amy; Dove, Carla

    2016-01-01

    Species complexes that have undergone recent radiations are often characterized by extensive allele sharing due to recent ancestry and (or) introgressive hybridization. This can result in discordant evolutionary histories of genes and heterogeneous genomes, making delineating species limits difficult. Here we examine the phylogenetic relationships among a complex group of birds, the white-headed gulls (Aves: Laridae), which offer a unique window into the speciation process due to their recent evolutionary history and propensity to hybridize. Relationships were examined among 17 species (61 populations) using a multilocus approach, including mitochondrial and nuclear intron DNA sequences and microsatellite genotype information. Analyses of microsatellite and intron data resulted in some species-based groupings, although most species were not represented by a single cluster. Considerable allele and haplotype sharing among white-headed gull species was observed; no locus contained a species-specific clade. Despite this, our multilocus approach provided better resolution among some species than previous studies. Interestingly, most clades appear to correspond to geographic locality: our BEAST analysis recovered strong support for a northern European/Icelandic clade, a southern European/Russian clade, and a western North American/canus clade, with weak evidence for a high latitude clade spanning North America and northwestern Europe. This geographical structuring is concordant with behavioral observations of pervasive hybridization in areas of secondary contact. The extent of allele and haplotype sharing indicates that ecological and sexual selection are likely not strong enough to complete reproductive isolation within several species in the white-headed gull complex. This suggests that just a few genes are driving the speciation process.

  11. Diploposthe laevis (Bloch Jacobi (Eucestoda, Hymenolepididae from Netta peposaca (Vieillot (Aves: Anatidae: first record for the Neotropical Region and a new host Diploposthe laevis (Bloch Jacobi (Eucestoda: Hymenolepididae em Netta peposaca (Vieillot (Aves, Anatidae: primeiro registro para Região Neotropical e novo hospedeiro

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    Eliane F. da Silveira

    2008-03-01

    Full Text Available One hundred eight rosy-billed pochards, Netta peposaca (Vieillot, 1816, collected in Brazil and Argentina were examined for endoparasites. Collection sites included the municipalities of Santa Vitória do Palmar and Jaguarão, Rio Grande do Sul State, Brazil (wintering site and Alvear, Corrientes Province, northern Argentina (nesting site. Birds were frozen in dry ice after collection. During necropsy they were categorized according to sex and maturation, either adult or juvenile. The cestode Diploposthe laevis (Bloch Jacobi, 1896 was found (prevalence 68.5%, mean infection was 2. The mean prevalence of D. laevis in Alvear (25.9% was higher than found in Jaguarão and Santa Vitória do Palmar, Rio Grande do Sul (19%, and could be related to the nesting site and to the period when the birds may ingest a higher amount of food. This is the first record of a species of the genus Diploposthe in anatideans from South America, and the first record of the species in N. peposaca. Details of the cirrus pouch and vagina were described based on histological sections.Com o objetivo de conhecer a helmintofauna do marrecão, Netta peposaca (Vieillot, 1816, na América do Sul, 108 aves foram amostradas. Os pontos de captura foram os municípios de Santa Vitória do Palmar e Jaguarão, no Estado do Rio Grande do Sul, sul do Brasil (pólo de invernia, e em Alvear, Província de Corrientes, região norte da Argentina (pólo de nidificação, entre 2002 e 2004. As aves foram congeladas em gelo seco logo após o abate. Durante o procedimento de necropsia tiveram o sexo identificado, e foram classificadas de acordo com estado de maturação sexual, em juvenil e adulto. O cestóide Diploposthe laevis (Bloch Jacobi, 1896 foi encontrado com prevalência média de 68,5% e intensidade média de infecção de dois espécimes por hospedeiro. A prevalência média de D. laevis em Alvear (25,9% foi maior do que a encontrada em Jaguarão e Santa Vitória do Palmar, Rio Grande

  12. Feeding associations between capybaras Hydrochoerus hydrochaeris (Linnaeus (Mammalia, Hydrochaeridae and birds in the Lami Biological Reserve, Porto Alegre, Rio Grande do Sul, Brazil Associações alimentares entre capivaras (Hydrochoerus hydrochaeris (Linnaeus (Mammalia, Hydrochaeridae e aves na Reserva Biológica do Lami, Porto Alegre, Rio Grande do Sul, Brasil

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    Ana C. Tomazzoni

    2005-09-01

    Full Text Available Feeding associations between capybaras Hydrochoerus hydrochaeris (Linnaeus, 1766 and some bird species were registered in the Lami Biological Reserve, southern Brazil, through observations in a set of transects established in the five major vegetation types of the study area: shrubby and herbaceous swamps, wet grasslands, sandy grasslands and forests. Data included: date and time, vegetation type, bird species, number of individuals (birds and capybaras, type of prey consumed, foraging strategy of the birds and the behavior of the capybaras in relation to the presence of birds. Five species of birds were registered: Caracara plancus (Miller, 1777, Furnarius rufus (Gmelin, 1788, Machetornis rixosus (Vieillot, 1819, Milvago chimachima (Vieillot, 1816 and Molothrus bonariensis (Gmelin, 1789. The interactions were observed in the shrubby swamp (M. bonariensis, forest (C. plancus and wet grassland (F. rufus, M. rixosus, M. chimachima. The foraging strategies were: (1 use of the capybara as a perch, hunting from its back (M. rixosus, M. bonariensis; (2 use of the capybara as a beater, hunting in the ground (F. rufus, M. rixosus, M. bonariensis; (3 foraging in the skin of the capybara, by picking the ectoparasites (C. plancus, F. rufus, M. chimachima. Strategies (1 and (2 were employed to catch arthropods flushed from the vegetation. Sometimes, capybaras lay down and exposed the abdomen and lateral areas of their bodies to facilitate cleaning by M. chimachima, but the presence of other bird species seemed to be neutral to capybaras.Foram registradas associações alimentares entre capivaras Hydrochoerus hydrochaeris (Linnaeus, 1766 e aves na Reserva Biológica do Lami, sul do Brasil, por meio de observações em um conjunto de transecções estabelecidas nos cinco principais tipos de vegetação existentes na área: banhado arbustivo, banhado herbáceo, campo úmido, campo arenoso e mata. As informações coletadas foram: data, horário, tipo de vegeta

  13. Estudio de los riesgos ergonómicos presentes durante la construcción de los túneles urbanos de Gerona para el AVE

    OpenAIRE

    Bermejo Cardona, Anahí

    2012-01-01

    El objetivo de este estudio es determinar el riesgo ergonómico presente en algunas de las tareas llevadas a cabo durante la construcción de los túneles urbanos de Gerona para el AVE. Primero se realizaron entrevistas con los responsables de seguridad y salud de la obra a los que se les solicitaron los datos de siniestralidad des del inicio de los trabajos. De esta manera se puede conocer el número de bajas médicas por sobreesfuerzos o posturas forzadas. Después se les acompañó durante s...

  14. Moa (Aves : Dinornithiformes) nesting material from rockshelters in the semi-arid interior of South Island, New Zealand

    International Nuclear Information System (INIS)

    Wood, J.R.

    2008-01-01

    The first descriptions of plant remains from the nests of extinct moa (Aves: Dinornithiformes) are presented. The samples of desiccated nesting material were collected during excavation of Holocene sediments within five rockshelters in semi-arid regions of southern South Island, New Zealand, between 1964 and 2006. The nesting materials were attributed to moa on the basis of associated moa coprolites, feathers and eggshell fragments. The nesting material includes short, clipped twigs from a range of locally available tree, shrub and liane species. These twig clippings show a size distribution similar to those recorded from moa gizzard content samples. Other nesting material from the sites includes longer twigs and fragments of bark. The plant materials suggest general similarities between the nests of moa and those of the extant Australasian ratites, emu (Dromaius novaehollandiae) and cassowary (Casuarius spp.). (author). 37 refs., 7 figs., 1 tab

  15. Maternal effects mediated by egg quality in the Yellow-legged Gull Larus michahellis in relation to laying order and embryo sex

    Directory of Open Access Journals (Sweden)

    Caprioli Manuela

    2011-10-01

    Full Text Available Abstract Background Maternal effects mediated by egg size and quality may profoundly affect offspring development and performance, and mothers may adjust egg traits according to environmental or social influences. In avian species, context-dependency of maternal effects may result in variation in egg composition, as well as in differential patterns of covariation among selected egg components, according to, for example, position in the laying sequence or offspring sex. We investigated variation in major classes of egg yolk components (carotenoids, vitamins and steroid hormones in relation to egg size, position in the laying sequence and embryo sex in clutches of the Yellow-legged Gull (Larus michahellis. We also investigated their covariation, to highlight mutual adjustments, maternal constraints or trade-offs in egg allocation. Results Laying sequence-specific patterns of allocation emerged: concentration of carotenoids and vitamin E decreased, while concentrations of androgens increased. Vitamin A, estradiol and corticosterone did not show any change. There was no evidence of sex-specific allocation or covariation of yolk components. Concentrations of carotenoids and vitamins were positively correlated. Egg mass decreased along the laying sequence, and this decrease was negatively correlated with the mean concentrations of carotenoids in clutches, suggesting that nutritionally constrained females lay low quality clutches in terms of carotenoid content. Finally, clutches with smaller decline in antioxidants between first- and last-laid eggs had a larger increase in yolk corticosterone, suggesting that a smaller antioxidant depletion along the laying sequence may entail a cost for laying females in terms of increased stress levels. Conclusions Since some of the analyzed yolk components (e.g. testosterone and lutein are known to exert sex-specific phenotypic effects on the progeny in this species, the lack of sex-specific egg allocation by

  16. Factors that can influence the economic feasibility of stand-alone and grid-connected photovoltaic systems: case studies using the software AVES-F

    International Nuclear Information System (INIS)

    Blasques, L.C.M.; Pinho, J.T.

    2004-01-01

    This paper presents case studies of economic feasibility of solar photovoltaic systems using the software AVES-F (Analysis of Economic Feasibility of Photovoltaic Systems), developed by the authors, considering cases of stand-alone and grid-connected systems. The software takes into account several factors that can influence the economic feasibility of these kind of systems, like load to be supplied, distance to the grid, the use regime of the system, applied subsidies and others. The main goal of this paper is to analyze some of these factors and to observe how they can affect the economics of PV systems for electricity generation. (authors)

  17. Análise espectral de flores utilizadas por aves nectarívoras em uma área urbana no Sudeste do Brasil

    OpenAIRE

    Toledo, MCB.; Donatelli, RJ.

    2010-01-01

    Análise espectral de flores utilizada por aves nectarívoras em áreas urbanas. O objetivo deste trabalho foi estabelecer a característica espectral das flores produtoras de néctar visitadas por nectarívoros em áreas urbanas. Este estudo foi desenvolvido na região central do município de Taubaté, no nordeste do Estado de São Paulo. As áreas amostradas incluíram espaços verdes, tais como praças e parques e a vegetação das ruas e avenidas. Foram registradas 12 espécies de plantas utilizadas por c...

  18. Efectos del área, edad y cobertura de la vegetación sobre la riqueza de especies de aves reproductoras en los parques urbanos de Vitoria-Gasteiz

    Directory of Open Access Journals (Sweden)

    De la Hera, I., Unanue, A., Aguirre, I.

    2009-01-01

    Full Text Available La rápida expansión urbana y el incremento de la población humana que vive en las ciudades dificultan el acceso de los ciudadanos a la naturaleza. Entre los múltiples beneficios de las áreas verdes urbanas, se encuentra su contribución a paliar este alejamiento. En este trabajo se evaluó el efecto del área total del parque, de su edad y de la cobertura de diversos estratos vegetales (cobertura de césped, arbustos y árboles sobre la riqueza total de especies de aves en 20 parques urbanos de la ciudad de Vitoria-Gasteiz. El área total del parque y la cobertura arborea, que se correlacionó positivamente con la edad del parque, explicaron gran parte de la variación en la riqueza de especies en estos parques. Conocer como afectan las características de los parques a la riqueza de especies de aves en la áreas verdes de las ciudades, puede ser especialmente útil para los gestores urbanos a la hora de diseñar parques en los que se potencien, no sólo sus servicios sociales de esparcimiento, sino tambien sus valores naturales.

  19. Survey of chicken abattoir for the presence of Campylobacter jejuni and Campylobacter coli Pesquisa de Campylobacter jejuni e Campylobacter coli em abatedouros de aves

    Directory of Open Access Journals (Sweden)

    Ana L.L. Cortez

    2006-12-01

    Full Text Available The genus Campylobacter is of great importance to public health because it includes several species that may cause diarrhea. These species may be found in water, food and in the intestinal tract of chickens. This study investigated the presence of Campylobacter jejuni and Campylobacter coli in chicken abattoirs in São Paulo State, Brazil. A total of 288 samples of feces, feathers, scald water, evisceration water, chiller water, and the rinse water of eviscerated, not eviscerated and chilled carcasses were collected in six chicken abattoirs. Polymerase Chain Reaction (PCR was performed in Campylobacter spp.-positive isolates using the gene HIP, specific for hippuricase enzyme from Campylobacter jejuni and aspartokinase gene, specific to detect Campylobacter coli. The percentage of positive isolates of Campylobacter jejuni was 4.9% (14/288. Isolation was greater in feces samples (22%, 8/36. One sample was positive for the species C. coli. In conclusion, the results indicate that it is necessary to improve quality control for Campylobacter spp. in chicken abattoirs.O gênero Campylobacter tem grande destaque em saúde pública, principalmente por pertencerem a este gênero várias espécies que podem causar diarréia. Estas espécies podem ser encontradas em amostras de água, alimentos e no trato intestinal das aves. Este estudo investigou a presença de Campylobacter jejuni e Campylobacter coli em abatedouros de aves no Estado de São Paulo. As 288 amostras foram coletadas em seis estabelecimentos e incluíram: fezes; penas; água de escaldamento, de evisceração e de resfriamento; e água de enxaguadura de carcaça não eviscerada, eviscerada e resfriada. Após o isolamento microbiológico das amostras positivas de Campylobacter spp. foi realizada uma Reação em Cadeia da Polimerase (PCR utilizando o gene HIP, da hipuricase, específico para Campylobacter jejuni e o gene da enzima aspartoquinase, específico para Campylobacter coli. A

  20. Níveis de cloreto de sódio para aves de corte da linhagem Colonial criadas em semiconfinamento Sodium chloride levels for Colonial broiler chickens reared in free-range system

    Directory of Open Access Journals (Sweden)

    Sandra Regina Freitas Pinheiro

    2011-07-01

    Full Text Available Objetivou-se determinar níveis de inclusão de cloreto de sódio (NaCl em rações para aves machos e fêmeas da linhagem Colonial nas fases inicial (1 a 28 dias, de crescimento (28 a 56 dias e final (56 a 84 dias criadas em semiconfinamento. Em cada ensaio, 480 aves com idade correspondente à fase de criação foram alojadas em 24 unidades experimentais contendo áreas de abrigo e de pastejo. O delineamento experimental utilizado foi o inteiramente casualizado, em esquema fatorial 4 × 2 (níveis de NaCl e sexos, totalizando oito tratamentos e três repetições de 20 aves. Os níveis de NaCl avaliados foram: 0,20; 0,40; 0,60 e 0,80% na fase inicial; 0,10; 0,30; 0,50 e 0,70% na fase de crescimento e 0,10; 0,25; 0,40 e 0,55% na fase final. Foram avaliados o ganho de peso, o consumo de ração, a ingestão de água, a conversão alimentar, o potencial hidrogeniônico, a pressão parcial de gás carbônico no sangue, a concentração de hematócritos e os teores de sódio e cloro no sangue. Para a fase inicial, o nível recomendado é de 0,53% de NaCl na ração para aves de ambos os sexos. Para a fase de crescimento, os níveis de 0,40 e 0,43% de NaCl, respectivamente, para machos e fêmeas e, para a fase final, de 0,25% para aves de ambos os sexos, atendem às exigências nutricionais.The objective of this work was to determine inclusion levels of sodium chloride (NaCl in diets for male and female Colonial strain birds in the starter (from one to 28 days of age, growing (from 28 to 56 days of age and finisher (from 56 to 84 days of age phases reared in free-range system. In each trial, 480 birds at age corresponding to the rearing phase were housed in 24 experimental units containing areas of shelter and pasture. The experimental design used was a completely randomized in a 4 × 2 factorial arrangement (NaCl levels × sex, totaling eight treatments and three replications of 20 birds. Levels of NaCl evaluated were: 0.20, 0.40, 0.60 and 0.80% in

  1. Determinación de los factores que inciden en la captura incidental de aves marinas en la flota palangrera pelágica chilena Determination of factors affecting the bycatch of seabirds in Chilean pelagic longline fleet

    Directory of Open Access Journals (Sweden)

    Andrés González

    2012-09-01

    Full Text Available Se analizó la relación entre la variabilidad de la tasa de captura incidental de aves marinas en la pesquería palangrera pelágica de pez espada (Xiphias gladius y diversos factores temporales, ambientales, espaciales y pesqueros, entre 2007 y 2009. Los resultados muestran que las operaciones de pesca de esta flota afectan principalmente a los albatros, grupo que concentra el 83,7% de la captura incidental de aves marinas registrada en el período. Esta captura incidental se debe en primera instancia a la presencia del Frente Subtropical del Pacífico Sur, sistema que provoca la sobreposición entre la actividad de esta flota con la distribución espacial de aves marinas durante la fase residente del período no reproductivo. La variabilidad en esta captura incidental estaría fuertemente relacionada a los estímulos visuales (medido mediante el porcentaje de luces químicas y porcentaje de calamar y las condiciones de luminosidad ambiental existentes en los períodos de forrajeo diurno y nocturno de estas aves marinas durante el calado (medido a través del desfase de la hora del ocaso con respecto a la hora de inicio del calado y fase lunar.We analized the relationship between the variability in the rate of seabird bycatch in pelagic longline fishery for swordfish (Xiphias gladius, and several temporary, environmental, spatial and fisheries factors for the fishing period from 2007 to 2009. The results show that the fishing operations of this fleet mainly affect the albatross, group that accounts for 83.7% of the incidental catch of seabirds recorded in the period. This bycatch is due primarily to the presence of the South Pacific Subtropical Front, a system that causes the overlap between the activities of this fleet with the spatial distribution of these seabird species during the resident phase of the nonbreeding period. By the other hand, the variability in bycatch would be strongly linked to visual stimuli (measured by the percentage of

  2. MANNAN OLIGOSACCHARIDES AND ENZYMES IN CORN AND SOYBEAN MEAL BASED-DIETS FOR BROILERS MANANOLIGOSSACARÍDEOS E ENZIMAS EM DIETAS À BASE DE MILHO E FARELO DE SOJA PARA AVES

    Directory of Open Access Journals (Sweden)

    Vera Maria Barbosa de Moraes

    2007-09-01

    Full Text Available

    Mannan oligosaccharides, as an alternative to an-tibiotics, show promising results related to bird perfor-mance, immunity stimulus and improvement of intestinal mucosa. Enzyme inclusion in diets containing mannan oli-gosaccharides could improve these results. Poultry diets consist of corn and soybean meal, and approximately 30% of the phosphorus (P in these ingredients is bound to phytic acid. Phytase is capable of release not only the P but also other nutrients that can be better used by the birds while corn is relatively free of viscosous nonstarch poly-saccharides (NSP, soybean has about 20% of NSP, whose digestibility is almost null. NSP`s insoluble component of corn and soybean encapsulate nutrients and are responsive to exogenous enzymes. Negative environmental and nutri-tional consequences of dietary phytic acid are reduced by phytase inclusion in monogastric diets. Additionally, the enzymatic complex supplementation improves the nutri-tional value of feedstuffs through higher digestibility in birds. Finally, the use of exogenous enzymes allows re-duction in feed costs.

    KEY-WORDS: Animal nutrition, enzymatic supplementation, prebiotic.

    Os mananoligossacarídeos, como alternativa aos antibióticos, têm apresentado resultados promissores no que se refere tanto ao desempenho das aves quanto ao estímulo da imunidade e à melhora da mucosa intestinal. A inclusão de enzimas nas dietas contendo mananoligossacarídeos poderia melhorar ainda mais esses resultados. As dietas para aves são compostas de milho e farelo de soja, principalmente, e cerca de 30% do fósforo (P desses in-gredientes estão ligados ao ácido fítico. A fitase libera não só o P, mas também outros nutrientes para que sejam me-lhor utilizados pelas aves. O milho é relativamente isento de polissacarídeos não-amiláceos (PNAs viscosos e a soja apresenta cerca de 20% de PNAs, com digestibilidade praticamente nula. Os componentes insolúveis dos PNAs do

  3. Identificación de Arcobacter en niños y adultos con/sin diarrea y en reservorios animales: aves, ganado vacuno y porcino, peces y mariscos

    OpenAIRE

    Zerpa, Rito; Alarcón, Jorge; Lezama, Percy; Patiño, Lilian; Reyes, Alberto; Valencia, Augusto; Velásquez, Jorge; Alarcón, Miriam

    2013-01-01

    Objetivos: Conocer la prevalencia de Arcobacter en niños y adultos con/sin diarrea y en animales: aves, ganado vacuno y porcino, peces y mariscos. Diseño: Estudio transversal descriptivo. Institución: Instituto de Medicina Tropical Daniel A. Carrión, Facultad de Medicina, UNMSM, Instituto Nacional de Salud del Niño, Instituto Materno Infantil de San Bartolomé y Hospital Arzobispo Loayza. Material biológico: Aislamientos bacterianos de humanos y animales. Intervenciones: Búsqueda activa de Arc...

  4. Distribuição de espécies de columbídeos (Aves: Coliumbiformes), na zona urbana de Uberlândia, MG

    OpenAIRE

    Cândido, Claudiney Rocha

    2006-01-01

    Dentre as aves que vivem no ambiente urbano, podemos destacar os columbídeos (pombas e rolinhas). Em função da sua capacidade de adaptação, várias espécies desse grupo se tornaram tolerantes à presença e transformações humanas. Os objetivos desse estudo foram: determinar a distribuição de espécies de columbídeos na zona urbana de Uberlândia, MG e correlacionar a ocorrência dessas espécies com fatores ambientais (cobertura vegetal, tipos de edificações e distância em relação ao ...

  5. Ilustración de aves, comunicación científica y su difusión en la zona cafetera de Colombia

    Directory of Open Access Journals (Sweden)

    Sergio Córdoba Córdoba

    2016-12-01

    Existe una estrecha relación entre la ciencia y el arte de la comunicación gráfica. La posibilidad de transmitir a aquellos que se encuentran a grandes distancias información sobre especies, paisajes y el entorno de regiones a los cuales solo unos pocos han tenido la fortuna de conocer, ha hecho posible que se amplíe el conocimiento de las regiones, la fauna y la flora del planeta. También, permite imaginar cómo fueron esos seres que ya no nos acompañan, especies de organismos extintos como los dinosaurios, aves y mamíferos, entre otros, y su medioambiente.

  6. Investigation of Leptin gene in broiler and layer chicken lines Investigação do gene da Leptina em linhagens de aves de corte e postura

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    Kerli Ninov

    2008-04-01

    Full Text Available Leptin, a polypeptide hormone secreted mainly by adipose tissue, plays an important role in feed intake regulation, energy metabolism and reproduction in several species. Its function has been intensively studied in mammals; however, in birds limited information is available. The cDNA sequence for chicken leptin has been reported, and high hepatic expression levels of leptin were associated with fat deposition in selected bird lines. However, controversies still remain concerning to the chicken leptin gene and several authors failed to amplify this gene from genomic DNA or cDNA. In view of this controversy and the importance of this gene, the present study aimed to investigate the leptin gene in a population of birds developed by Embrapa Swine and Poultry Research Center (Brazil. First of all, the sequences of Gallus gallus leptin gene (GenBank AF012727 and Mus musculus (GenBank NM_008493 were aligned with the objective of designing primers in conserved regions among the two species, since 94.6% of similarity is described in the literature in those species. For all four pairs of primers designed, several amplification tests were performed with both DNA and cDNA, but neither unique fragment nor expected band size was ever achieved. The leptin sequence in GenBank does not represent the sequence of the chicken leptin gene.A leptina, hormônio polipeptídico secretado principalmente pelo tecido adiposo, tem um papel importante na regulação da ingestão de alimentos, metabolismo de energia e reprodução em mamíferos. A função do gene da leptina tem sido intensamente estudada em mamíferos, porém, em aves, ainda é pouco conhecida. O cDNA deste gene foi identificado em galinhas, e a alta expressão hepática e os níveis de leptina no plasma foram associados à alta deposição de gordura presente em linhagens de aves selecionadas. Entretanto, permanecem controvérsias sobre o gene da leptina em galinhas, pois diversos autores não conseguiram

  7. Composição das comunidades de aves em duas florestas secundárias contíguas no Sudeste do Brasil. Birds communities composition of two secondary forests in the Southeast Brazil.

    Directory of Open Access Journals (Sweden)

    Alexsander Zamorano ANTUNES

    2009-06-01

    Full Text Available Muitas décadas são necessárias até queuma floresta secundária apresente uma estruturasemelhante à de uma área em estádio avançado.Há espécies de aves florestais que dependem deflorestas avançadas, enquanto outras utilizamflorestas secundárias. Neste trabalho se comparaa riqueza de espécies de aves, a estrutura tróficada comunidade e a presença de espécies dedistribuição restrita em duas florestas secundáriascontíguas, mas com estruturas de vegetação distintas:os parques estaduais Alberto Löfgren - PEALe Cantareira - PEC. As aves foram amostradas emtrajetos efetuados entre agosto de 2005 e dezembrode 2008, e a vegetação foi avaliada a partir de 100pontos quadrantes por parque. A riqueza e onúmero de espécies de aves com distribuiçãorestrita foram significativamente maiores no PEC.As guildas insetívoros do sub-bosque, insetívorosterrestres e frugívoros terrestres apresentaramriqueza menor de espécies no PEAL em relação aoPEC. Concluiu-se que a avifauna florestal doPEAL é um subconjunto da avifauna do PEC,que a vegetação menos desenvolvida do primeiroe dificuldades de estabelecimento de populaçõessão as possíveis causas das diferenças observadasentre os parques e que ações de manejo podemaumentar a riqueza no PEAL, o que seriaimportante regionalmente.Many decades are required to asecondary forest shows a structure similar to anarea in advanced stage. Some forest bird speciesdepend on forest in advanced stage, while othersuse secondary forests. This work compares therichness of bird species, the trophic structure of thecommunity and the presence of species ofrestricted distribution in two adjacent secondaryforests, but with different structures of vegetation:the State Parks Alberto Löfgren - PEAL andCantareira - PEC. Birds were sampled on pathsmade between August 2005 and December 2008and vegetation was evaluated from 100 points perpark. The richness and number of bird specieswith restricted

  8. Patrones de diversidad de aves a lo largo de un gradiente latitudinal de bosques ribereños del río Paraná medio, Argentina

    OpenAIRE

    Berduc, Alfredo; Lorenzón, Rodrigo Ezequiel; Beltzer, Adolfo Héctor

    2015-01-01

    Se estudió la variación de la riqueza de especies (diversidad alfa), la diversidad beta, la abundancia y la equidad de ensambles de aves a lo largo de un gradiente latitudinal de 500 km de bosques ribereños. Se muestrearon 5 localidades ubicadas en dirección norte-sur mediante una técnica mixta: transectos y puntos de conteo. La riqueza de especies decreció con el incremento de la latitud, reproduciendo el patrón de la riqueza regional informado en estudios previos. Los resultados apoyaron la...

  9. Avaliação do potencial de valorização dos ecossistemas fluviais : aplicação ao caso de estudo do rio Ave

    OpenAIRE

    Costa, Francisco da Silva; Alonso, Joaquim Mamede; Fernandes, Susana Raquel

    2012-01-01

    A qualidade de vida depende da forma como o espaço se encontra organizado e articulado com as acessibilidades, os equipamentos e as atividades primárias, assumindo, cada vez maior importância, as intervenções territoriais integradas, que minimizem os impactes do abandono e das alterações no uso do solo. O presente trabalho de investigação tem como objetivos aferir o potencial de valorização de espaços ribeirinhos do rio Ave, para diferentes tipologias de usos/funções e desenvol...

  10. Accroissement du recours aux politiques fiscales dans la lutte ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Incidence de la hausse des taxes sur le tabac et du prix des produits du tabac en Ukraine, en Russie et au Bélarus. La recherche destinée aux responsables des politiques de l'Ukraine, de la Russie et du Bélarus mettra en évidence la façon dont les mesures de taxation des produits du tabac peuvent contribuer.

  11. Evaluación del efecto del grano de soya crudo (C.S.C. suministrado por 42-28 o 14 semanas a aves en postura

    Directory of Open Access Journals (Sweden)

    López G. Arnobio

    1988-12-01

    Full Text Available An experiment was conducted with 144 middle weight Dekalb-Warren laying hens (28 to 70 weeks age, to evaluate the effects on feed consumption, % egg production, egg weight feed conversion per dozen and kilogram of egg produced, weight change, and pancreas size and weight due to the feeding of who le raw soybean (WRSB replacing soybean bean (SBM as a protein source in the diet in three feeding periods (42,28 and 14 weeks. There were no differences (P<0.05 due to protein sources used on egg weight, feed conversion per dozen and kilogram of egg produced and pancreas size. However, there were differences on egg production, weight change, feed consumption by hen per day and pancreas weight. Also there on differences (P < 0.05 due to feeding period on egg weight, feed conversion by dozen and kilograms of egg produced and pancreas weight, but there were differences (P<0.05 on egg production and pancreas size. In a similar way, there where no differences (P<0.05 to the interaction of protein sources feeding periods for any of the variables considerated.Un experimento se llevó a cabo con 144 gallinas Dekalb-Warren semipesadas en postura (28 a 70 semanas para evaluar los efectos de reemplazar la torta de soya por el grano de soya crudo (G.S.C suministrada por tres períodos de tiempo diferentes(42, 28 y 14 semanas. No hubo diferencias (P <0.05 por efecto de la fuente de proteína para las variables peso de huevo, eficiencia de conversión por docena y kilogramo de huevo producido y tamaño de pancreas. Sin embargo si hubo diferencias (P < 0.05 para el porcentaje de producción, cambio de peso en las aves, consumo de alimento por ave día y peso del páncreas. Tampoco se encontraron diferencias (P<0.05 por efecto del período de tiempo de suministro para las variables cambio de peso en las aves, peso de huevo, eficiencia de conversión por docena y kilogramo de huevo producido y peso del páncreas. Pero si hubo diferencias (P< Q05 para las variables

  12. Linguagem, participação e funcionalidade de adultos pós AVE em atendimento ambulatorial : avaliação baseada na CIF

    OpenAIRE

    Maria Tereza Maynard Santana

    2014-01-01

    Resumo: INTRODUÇÃO: Dentre as doenças crônicas não transmissíveis (DCNT), o AVE (Acidente Vascular Encefálico) trata de um importante problema de Saúde Pública, dado os altos índices de mortalidade e suas sequelas, tais como as alterações de linguagem e suas implicações na participação. Ao longo do tempo, diversas mudanças de paradigmas na saúde levam a ressignificação da clínica, incorporando-se em suas práticas aspectos funcionais e sociais tal como propõe a Organização Mundial da Saúde (OM...

  13. Distribución espacial y temporal de aves playeras (Orden: Charadriiformes en Laguna San Ignacio, Baja California Sur, México Temporal and spatial distribution of shorebirds (Charadriiformes at San Ignacio Lagoon, Baja California Sur, Mexico

    Directory of Open Access Journals (Sweden)

    Luis Francisco Mendoza

    2013-03-01

    Full Text Available Con la pérdida o degradación de humedales han declinado las poblaciones de algunas especies tales como las aves playeras. En vista de que ha crecido el interés internacional por los estudios ecológicos sobre estas especies, se determinó la abundancia, distribución y riqueza espacio-temporal de las aves playeras en Laguna San Ignacio, Península de Baja California. Se realizaron 12 censos mensuales (octubre 2007-septiembre 2008 en el perímetro interno de la laguna; la cual se dividió en cuatro zonas, dos al norte y dos al sur. Temporalmente las abundancias menores se presentaron en mayo (1 585 aves y las mayores en octubre (47 410. Las especies más abundantes fueron: el picopando canelo (Limosa fedoa; 55% de los registros totales, el playero occidental (Calidris mauri; 23% y el playero pihuiuí (Tringa semipalmata; 10%. Estas especies fueron más abundantes en otoño. El picopando canelo y el playero pihuiuí estabilizaron sus números en invierno y primavera y estuvieron presentes en verano en bajos números, el playero occidental mostró oscilaciones notorias. Se presentan los primeros reportes del playero rojizo del Pacifico (Calidris canutus roselaari para la zona. La riqueza y abundancia estuvieron influenciadas temporal y espacialmente por las aves migratorias. Las mayores abundancias se presentaron al sur de la laguna, probablemente por la disponibilidad del alimento. Los resultados presentes permitieron incluir al área en la Red Hemisférica de Reservas para las Aves Playeras como sitio de importancia internacional.Baja California Peninsula has several wetlands that represent important ecosystems for shorebirds. San Ignacio Lagoon is one of these sites, and supports 10% of the total abundance of shorebirds reported in this Peninsula. Since there is few information about this group in this area, we studied spatial and temporal changes in abundance and distribution of shorebirds in San Ignacio Lagoon. For this, we conducted twelve

  14. Comportamentos interespecíficos entre Callithrix jacchus (Linnaeus (Primates, Callitrichidae e algumas aves de Mata Atlântica, Pernambuco, Brasil Interspecific behaviour between Callithrix jacchus (Linnaeus (Callitrichidae, Primates and some birds of the Atlantic forest, Pernanbuco State, Brazil

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    Rachel M. de Lyra-Neves

    2007-01-01

    Full Text Available As observações ocorreram no período de dois anos, monitorando grupos marcados de sagüis durante oito horas por dia. Foram registrados seis tipos de eventos: predação de sagüis; predação de aves, disputa de área de forrageio e recurso alimentar; compartilhamento de área de forrageio e recurso alimentar; perseguição branda e utilização de ninho de ave como local de pernoite dos sagüis. Os eventos agrupados obtiveram diferenças significativas entre as estações do ano e os estratos ocupados.The observations cover a period of two years, monitoring groups of marked common marmosets in eight hour/day periods. Six types of events were recorded: marmoset predation; bird predation; foraging competition; food sharing; use of avian nest for nocturnal marmoset rest and mutual pursuit. All pooled events showed highly significant differences between season and vegetation strata.

  15. Una escuela de Cármenes: El patrimonio arquitectónico de las Escuelas del Ave María de Granada

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    Cristina Mª Moreno Fernández

    2009-06-01

    Full Text Available (ES En el presente artículo se analiza el proceso de creación y ampliación de las Escuelas del Ave María-Casa Madre por medio de la compra de diversos cármenes. Se seguirá un orden cronológico para mostrar de una manera más clara, el proceso de crecimiento que siguió la Institución, exponiendo las circunstancias que envolvieron cada una de las compras, personajes involucrados, intenciones de Andrés Manjón, funcionalidad de los espacios,.... El aspecto arquitectónico será el que centre el artículo, aunque sin olvidar la interrelación de todos los bienes que en este espacio confluyen, de cuya unión nace el valor patrimonial de estas Escuelas.

  16. A new look at the holotype and type locality of Setopagis maculosa (Todd, 1920) Aves: Caprimulgidae), with remarks on its systematic relationships.

    Science.gov (United States)

    Costa, Thiago V V; Ingels, Johan; Cavarzere, Vagner; Silveira, Luís Fábio

    2015-08-12

    Setopagis maculosa (Todd, 1920) (Aves: Caprimulgidae) was described based on a single male specimen collected by Samuel Milton Klages in French Guiana, northeastern South America. Since then, no new specimens have been collected nor have any reliable records been made, and the validity of the species has been questioned. A detailed analysis of the holotype reveals that it has unique and distinctive morphological traits that support the validity and taxonomic status of the species, which is provisionally placed in Setopagis. We present new information on the type locality at the time of its collection, which may shed some light on the habitat preferences of the species, and we provide details on its plumage that have been largely overlooked and that will be important for future field identification.

  17. Uso de hábitat y estado de conservación de las aves en el humedal El Paraíso, Lima, Perú

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    Alessandra S. Quiñonez

    2017-07-01

    Full Text Available Las aves son el grupo taxonómico más representativo de los humedales. En la costa central peruana muchos de estos ecosistemas se encuentran seriamente afectados por actividades antropogénicas. Con el objetivo de brindar información que contribuya a la implementación de planes de manejo y conservación de la avifauna del humedal El Paraíso se evaluó las preferencias y usos de los dos hábitats acuáticos presentes en el humedal, la laguna salobre y la zona cenagosa. Se llevaron a cabo evaluaciones mensuales desde mayo del 2009 a marzo del 2010 utilizando el método de puntos de conteo. Se observaron 68 especies que hicieron uso directo de los hábitats de estudio. Las familias más abundantes fueron Anatidae (19.2%, Laridae (18.0%, Phalacrocoracidae (16.8% y Rallidae (16.1%. La especie más abundante fue Phalacrocorax brasilianus (16.7%, seguida de la Fulica ardesiaca (13.0%. Se encontró marcada diferencias en la composición de aves entre los dos hábitats evaluados debido, principalmente, a la  presencia de especies migratorias boreales quienes prefieren el hábitat cenagoso. Por otro lado, fueron identificados los sitios de anidamiento de especies representativas del humedal tales como Phalacrocorax brasilianus, Tachuris rubrigastra, Phleocryptes melanops, Charadrius nivosus. La actividad frecuentemente registrada fue el descanso (73.9%, seguido de la alimentación (23.4% y la reproducción (2.73%. Constituyen las principales amenazas para el humedal; la caza deportiva, quema de totorales y juncales, tránsito de vehículos por la orilla marina y desechos de residuos sólidos dejados por los bañistas.

  18. Endogenous recipes for controlling arthropod ectoparasites of domestic poultry Receitas caseiras para o controle do ectoparasita artrópode nas aves domésticas

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    Sahidou Salifou

    2013-03-01

    Full Text Available This study is a contribution to the inventory of medicinal plants and other methods used in controlling external parasitic diseases of backyard poultry in the localities of Djougou and Ouaké (department of Donga, Benin. It consists of a survey undertaken from December 2010 to March 2011 through visits and interviews with 210 poultry famers. The results indicate that 13 species of medicinal plants are used in controlling ectoparasites. Annona senegalensis, Tectona grandis, Securidaca longepedunculata, Indigofera hirsuta, Lophira lanceolata, Hyptis spicigera, Steganotaenia araliacea, Oxytenanthera abyssinica, Nicotiana tabacum, Jatropha curcas, Ficus exasperata, Azadirachta indica and Parkia biglobosa are believed to treat external parasitic diseases in the area of this study. Annona senegalensis was the most frequently cited plant (18%, p Este estudo é uma contribuição ao inventário de plantas curativas e outros métodos endógenos usados no combate aos ectoparasitos de pássaros de currais nas aldeias de Djougou e Ouaké (departamento do Donga, em Benin. A pesquisa foi conduzida entre dezembro de 2010 e março de 2011, durante visitas e entrevistas com 210 criadores de aves. Os resultados indicam que 13 espécies de plantas curativas são utilizadas no combate aos ectoparasitos. Annona senegalensis, Tectona grandis, Securidaca longepedunculata, Indigofera hirsuta, Lophira lanceolata, Hyptis spicigera, Steganotaenia araliacea, Oxytenanthera abyssinica, Nicotiana tabacum, Jatropha curcas, Ficus exasperata, Azadirachta indica e Parkia biglobosa, são usadas para tratar uma doença parasitária externa na área de estudo. Annona senegalensis foi a planta mais frequentemente usada (18%, p < 0.05 como medicação contra os parasitas externos das aves. Outras receitas tradicionais como o óleo de palma e a cinza tem sido comunicadas.

  19. Artrópodes em ninhos de Columba livia Gmelin, 1789 (Aves, Columbidae em área urbana de Manaus, Amazonas, Brasil.

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    Guilherme Maerschner Ogawa

    2008-12-01

    Full Text Available Resumo. Foi realizado um estudo sobre artrópodes que vivem em ninhos de Columba livia Gmelin 1789, ave conhecida como pombo urbano e que nidifica em construções humanas, com o intuito de inventariar as espécies de artrópodes associadas. Foram coletados 14 ninhos de C. livia em nove bairros da área urbana de Manaus os quais foram levados ao laboratótio e colocados em um extrator do tipo Berlese-Tulgren por 12 dias, para a captura dos artrópodes. Foram encontrados 10.323 artrópodes, pertencentes a 3 subfilos, 3 classes, 14 ordens e 33famílias. Acari foi mais abundante com 7.879 indivíduos, sendo o gênero Caloglyphus Berlese, 1923, o mais representativo (75%. A maioria das espécies encontradas é detritívora. A diversidade de artrópodes foi menor em Manaus se comparada à registrada em trabalhos da região Paleártica, provavelmente por C. livia ser uma espécie exótica na fauna Neotropical. Arthropods in the nests of Columba livia Gmelin 1789 (Aves, Columbidae in the urban area of Manaus, Amazonas, Brazil. Abstract. The objective of this study was identify the arthropod fauna in nests of the urban pigeon, Columba livia Gmelin 1789 who build their nests in man-made buildings. Fourteen nests were collected in nine districts of the built up area of the city of Manaus. For twelve days, arthropods were extracted in a Berlese-Tulgren funnel. A total of 10.323 arthropods representing 3 subphyla, 3 classes, 14 orders and 33 families were detected. Acari was the most abundant group with 7879 individuals. Mites of the genus Caloglyphus Berlese, 1923, made up over 75 % of all arthropods collected. Most of the arthropods extracted are detrivorous and apterous. The diversity found in Manaus was lower than that reported for samples collected in the Palearctic Region, probably because C. livia is exotic in the Neotropical fauna. The introduction of this pigeon can be responsible for a major contact between some arthropods and humans.

  20. Fossil Suidae (Artiodactyla, Mammalia) from Aves Cave I and nearby sites in Bolt’s Farm Palaeokarst System, South Africa

    Energy Technology Data Exchange (ETDEWEB)

    Pickford, M.; Gommery, D.

    2016-07-01

    Excavations carried out since 2011 at Bolt’s Farm Palaeokarst System, South Africa, have led to the recovery of interesting remains of suids, notably from Aves Cave I. The taxa present are Potamochoeroides hypsodon and Notochoerus capensis, the same as those that occur at Makapansgat. The new Notochoerus material, which includes an upper third molar and a lower fourth premolar, strengthens the conclusion that this genus is a suine and not a tetraconodont as thought for the past half century. Potamochoeroides has thickened mandibular rami indicating that it descended from the genus Dasychoerus that dispersed into Africa from Eurasia about 5 million years ago. Other karst deposits at Bolt’s Farm have yielded a younger suid fauna comprising Metridiochoerus andrewsi and Phacochoerus modestus, indicating that the Bolt’s Farm Karst System was active for a considerable period of time (ca 4.5 Ma - 1.8 Ma). The fact that all the suid taxa from Bolt’s Farm are hypsodont indicates that the palaeoenvironment contained abundant grass. (Author)

  1. Doenças de aves selvagens diagnosticadas na Universidade Federal do Paraná (2003-2007 Diseases of wild birds diagnosed at the Federal University of Paraná, Brazil (2003-2007

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    Gizah G.C. Santos

    2008-11-01

    Full Text Available Dentre os 253 atendimentos realizados em aves selvagens entre agosto de 2003 a agosto de 2006 no Ambulatório de Animais Selvagens do Hospital Veterinário da Universidade Federal do Paraná, 45 casos (17,8% referiram-se a consultas à espécie Serinus canarius (canário-belga. Dentre as aves atendidas e suas respectivas ordens obteve-se uma maior ocorrência da ordem Psittaciforme. As enfermidades mais freqüentemente visualizadas foram as afecções traumáticas com 56 casos (22,13%. Destas, 17 animais (30,91% possuíam algum tipo de fratura, sendo a fratura rádio-ulnar a mais comum, com 17,65% de ocorrência. As outras moléstias mais relatadas foram a presença de ectoparasitos (12,50% e endoparasitos (10,68%, doenças respiratórias (10,42%, procedimentos preventivos (7,55%, afecções dermatológicas (6,51%, neoplasias (4,95%, afecções oftálmicas (4,43%, afecções gastrintestinais (3,91%, caquexia (3,39%, afecções neurológicas (2,86%, automutilação (2,86%, obesidade (2,34%, agressão por outros animais (1,56 %, doenças nutricionais (1,30%, retenção de ovo (1,04%, bouba aviária (0,78% e gota úrica (0,52%. Tendo em vista a alta prevalência de traumatismos e presença de ecto e endo parasitas que poderiam ser evitados se estivesse ocorrendo um manejo adequado com a ave, sugere-se a necessidade que o Médico Veterinário assuma um papel mais efetivo na Medicina Veterinária Preventiva buscando informar e debater questões referentes ao modo correto de alimentação, criação e manejo das aves, assim como também o esclarecimento acerca das questões referentes às zoonoses quando da consulta veterinária.From 253 wild birds attended at the Wild Animal Ambulatory of the Veterinary Hospital, Paraná Federal University, between August 2003 and August 2006, 45 cases (17.8% were related to the species Serinus canarius (Belgian Canary. Within these attended birds and its respective orders, most morbid conditions occurred with the

  2. Avaliação nutricional de farinhas de vísceras de aves e a utilização em rações de frangos de corte

    OpenAIRE

    Edney Pereira da Silva

    2009-01-01

    Os experimentos foram realizados com os objetivos de determinar os valores energéticos e nutricionais de farinhas de vísceras de aves (FVA) para frangos de corte.Inicialmente, analisou-se a composição de três FVAs e dois ensaios foram realizados; um para determinar a taxa de passagem e outro para determinar a energia metabolizável aparente e verdadeira corrigida (EMAn e EMVn). As FVAs apresentaram uma média de: 93,34% de matéria seca, 62,73% para proteína bruta (PB), 15,42% de extrato etér...

  3. Feeding associations between Guiana dolphins, Sotalia guianensis (Van Bénèden, 1864 and seabirds in the Lagamar estuary, Brazil Associações de alimentação entre o boto-cinza (Sotalia guianensis (Van Bénèden, 1864 e aves marinhas no estuário do Lagamar, Brasil

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    MCO. Santos

    2010-02-01

    Full Text Available The main objective of the present study was to describe the characteristics regarding interactions between Guiana dolphins, Sotalia guianensis and seabirds in feeding associations in two distinct areas of the Lagamar estuary, Brazil. Boat-based surveys directed towards photo-identification studies of S. guianensis were conducted in the Cananéia Estuary (CE (25° 01' S and 47° 55' W from July 2004 to March 2008, as well as in the Paranaguá Estuarine Complex (PEC (25° 24' S and 48° 24' W from April 2006 to February 2008. On all occasions when seabirds were observed engaging in multi-species feeding associations with S. guianensis, data on species involved and their numbers were gathered. From 435 observed groups of S. guianensis in the CE, 38 (8.7% involved interactions with seabirds. In the PEC, from the 286 observed groups, 32 (11.2% involved the mentioned interactions. The following seabirds were observed in feeding associations with S. guianensis: Fregata magnificens, Sula leucogaster, Phalacrocorax brasilianus, and Sterna sp. In the CE, S. leucogaster was more commonly observed in feeding associations with Guiana dolphins (χ2 = 22.84; d.f. = 3, p O objetivo principal do presente estudo foi de descrever as características a respeito das associações de alimentação entre o boto-cinza, Sotalia guianensis, e aves marinhas em duas áreas distintas do estuário do Lagamar, Brasil. Investigações efetuadas a partir de embarcação e direcionadas a estudos de foto-identificação de S. guianensis foram conduzidas no Estuário de Cananéia (EC (25° 01' S e 47° 55' O entre julho de 2004 e março de 2008, bem como no Complexo Estuarino de Paranaguá (CEP (25° 24' S e 48° 24' O entre abril de 2006 e fevereiro de 2008. Em todas as ocasiões em que aves marinhas foram observadas em associações de alimentação multiespecífica com S. guianensis, dados sobre as espécies envolvidas e seus números foram obtidos. Dos 435 grupos de S

  4. Efeito da microbiota cecal e do Lactobacillus salivarius inoculados in ovo em aves desafiadas com Salmonella enterica sorovar Enteritidis Effect of cecal microflora and Lactobacillus salivarius in ovo administration used on chicken previously challenged with Salmonella enterica serovar Enteritidis

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    R.L. Andreatti Filho

    2006-08-01

    Full Text Available Ovos embrionados provenientes de matrizes pesadas foram inoculados na câmara de ar com microbiota cecal total, microbiota cecal diluída e cultura de Lactobacillus salivarius, no 18º dia de incubação. Dois dias após o nascimento, as aves foram desafiadas com Salmonella enterica sorovar Enteritidis (SE e, cinco dias após o desafio, avaliou-se a presença da bactéria no fígado e ceco. O efeito de exclusão competitiva, após o desafio com SE, somente foi observado pela ausência da bactéria no fígado das aves tratadas in ovo com L. salivarius. A inoculação in ovo de microbiota cecal indefinida ou diluída não reduziu a colonização de SE no fígado e no ceco das aves, incluindo, neste último, também o tratamento com L. salivarius. Nenhum dos tratamentos in ovo determinou índice de eclodibilidade superior a 65%.Commercial 18-day-old incubating chicken embryos were inoculated with total or diluted cecal microbiota and Lactobacillus salivarius cultures directly into the inner air sac. Two days after hatching, the chicks were challenged with Salmonella enterica serovar Enteritidis (SE, and five days later the presence of bacteria in cecum and liver was evaluated. The competitive exclusion effect was determined by the search for SE in the liver of chicks treated in ovo with L. salivarius and challenged with SE. The in ovo inoculation of total or diluted cecal microbiota, in addition to the L. salivarius treatment did not significantly decrease the colonization of SE in liver and cecum. All treatments resulted in hatchability of 65% or less.

  5. Deposição diária e sazonal de gordura subcutânea em Phacellodomus rufifrons (Wied (Aves, Furnariidae Daily and seasonal deposition of subcutaneous fat in Phacellodomus rufifrons, a Neotropical ovenbird

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    Fernando F. Goulart

    2007-01-01

    Full Text Available Aves que habitam regiões temperadas acumulam gordura a fim de sobreviver às condições extremas da noite. Níveis de deposição de gordura nessas aves aumentam ao longo do dia e atingem um pico no entardecer e diminuem ao longo da noite, quando a alimentação não é possível. Aliado a isso, existe o aumento estacional dos depósitos de lipídeos assim que o inverno se aproxima, e permite que a ave sobreviva naquela estação. Pouco se conhece sobre esses padrões em aves tropicais. O presente trabalho verifica a dinâmica de deposição de gordura de Phacellodomus rufifrons (Wied, 1821, um furnarídeo (Passeriformes, Furnariidae endêmico da região Neotropical, em um ambiente tropical bastante sazonal, o cerrado do sudeste do Brasil. O trabalho de campo foi realizado entre agosto de 2001 a julho de 2002, no Parque Nacional da Serra do Cipó, município de Jaboticatubas, Minas Gerais. Os dados de gordura subcutânea foram classificados visualmente em aves capturadas. Foram estabelecidas quatro categorias para a variação da gordura subcutânea depositada na cavidade da fúrcula. Foi encontrado um aumento significativo nos níveis de gordura ao longo do dia, como para espécies de regiões temperadas, mas não ouve variação ao longo das estações do ano. A massa corporal média não variou ao longo do ano e nem ao longo do dia. Os resultados mostram que variações diárias no cerrado podem atuar como fator de estresse que pode desencadear a adaptações fisiológicas para atravessar a noite. Por outro lado, variações estacionais podem ser balanceadas pelo habito dos indivíduos de P. rufifrons pernoitarem durante todo o ano dentro do ninho, um comportamento relativamente raro entre os Passeriformes.It is known that birds inhabiting temperate regions accumulate fat in order to survive a night of extreme conditions. Levels of fat depots arise as the day goes by, reaching its pick at dusk and decreasing along the night hours when no

  6. Primer registro de cráneos asignados a Palaeospheniscus (Aves, Spheniscidae procedentes de la Formación Bahía Inglesa (Mioceno Medio-tardío, Chile First record of skulls assigned to Palaeospheniscus (Aves, Spheniscidae from the Bahía Inglesa formation (middle-late Miocene, Chile

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    CAROLINA ACOSTA HOSPITALECHE

    2005-09-01

    Full Text Available Los cráneos de los Spheniscidae (como los de todas las aves, aunque escasos en el registro paleontológico, muestran importantes caracteres a nivel taxonómico. Hasta el momento se conocían solo seis cráneos en todo el mundo: Paraptenodytes antarctica y una nueva especie de Spheniscidae procedentes de las formaciones Gaiman (Mioceno temprano y Puerto Madryn (Mioceno tardío de Argentina, respectivamente; Spheniscus megaramphus y 3S. urbinai de la formación Pisco (Mioceno tardío de Perú, Marplesornis novaezealandiae del Plioceno de Nueva Zelanda y un resto de Sphenicidae cf Spheniscus procedente de la formación Bahía Inglesa (Mioceno medio-tardío. De esta última unidad provienen cinco restos craneanos recientemente descubiertos en la localidad de Caldera (Región de Atacama, Chile, los cuales fueron descritos y asignados preliminarmente a Palaeospheniscus. Estos materiales constituyen el primer registro de cráneos para la especie y significan un importante aporte al conocimiento de la avifauna fósil de Chile y en particular de la formación Bahía InglesaAlthough the skulls of the Spheniscidae are unusual in the paleontologic record, they show important features useful in the systematics of the group, as well as in the rest of the birds. Until now, fossil occurrences were restricted to six skulls: Paraptenodytes antarctica and one new species from the Gaiman formation (Early Miocene and Puerto Madryn formation (late Miocene of Argentina, respectively; Spheniscus megaramphus and S. urbinai from the Pisco Formation (Late Miocene, Perú; Marplesornis novaezealandiae from New Zealand (Pliocene; and Spheniscidae cf. Spheniscus from the Bahía Inglesa Formation (Middle-Late Miocene, Chile. Five new materials have been exhumed from this last unit. These skulls, which come from the Caldera locality (Region of Atacama, Chile, have been preliminarily assigned to Palaeospheniscus (Aves, Spheniscidae, constituting the first skulls described for

  7. Intra population polymorphism of Caspian gull (Larus cachinnans from the North-Western Coast of the Azov Sea (oological aspect

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    Y. Y. Dubinina

    2016-03-01

    Full Text Available This study presents the results of a long term study of nesting colonies of the Caspian gull (Larus cachinnans Pallas, 1811 on the islands of the Molochniy Liman and in Obitochnaya Bay (Azov Sea, in the South of Ukraine (Zaporizhia region, conducted between 1988 and 2013. A description of the size and coloring of eggs of Caspian gull was conducted by generally accepted methods. We measured 1000 eggs from 5 colonies of Caspian gulls. The background coloration of the eggs’ shells was classified into 7 types, the pattern of markings on the surface of the shells was classified into 4 types. In the nesting colonies, comprising different nesting settlements, the study tested differences in the distribution of typical and atypical coloring types and patterns on the surface of the shells. The background color and character of the shell marking patterns is dominated by eggs of phenotypes 3 and 4: gray-green, with a pattern of spots, of medium size (5–60% and brown, with a pattern of large spots (2–40%. In different settlements the Caspian gull egg sizes vary in length and diameter of 54.5–86.3 x 39.2–60.4 mm, volume 61.7–113.7 cm3 and index of roundness 63.6–85.3%. The study revealed that the linear dimensions of eggs also depend on the number of birds in the nesting colonies. We found that morphological and dimensional characteristics of Caspian gull eggs can vary at certain intervals and characterize individual colonies, settlements and populations. Based on cluster analysis, conducted in terms of the average of the linear sizes of eggs of Caspian gull from several populations within the range of the species, the study identified three groups of colonies – Danube-Sivash, Azov-Black Sea and Caucasus-Caspian. In region of the Azov-Black Sea, the greatest similarity was shown between the settlements of Sivash and the South of Crimea, which in turn is similar to Lebiyazhyi Islands and Kaniv Nature Reserve (river Dnipro. A related link

  8. Parásitos metazoos de Anas georgica Gmelin, 1789 (Aves: Anseriformes en Chile central: especificidad, prevalencia y variaciones entre localidades Host specificity, prevalence and between-sites variation in metazoan parasites of Anas georgica Gmelin, 1789 (Aves: Anseriformes in Chile

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    ANA HINOJOSA-SÁEZ

    2009-01-01

    Full Text Available Se estudiaron los parásitos metazoos en 65 ejemplares del pato jergón grande Anas geórgica Gmelin, 1789 (Aves: Anseriformes, capturados entre los meses de mayo y julio de 2004, en seis localidades de la zona centro-sur de Chile. Se evaluó si existía correlación entre el valor del índice de especificidad STD (Statistical Taxonomic Distinctiveness, para cada taxón determinado a nivel de especie, con sus respectivas prevalencias e intensidades. Además, se evaluó la significancia estadística de las variaciones entre localidades en la prevalencia e intensidad de ectoparásitos y endoparásitos, en la abundancia total de parásitos y en la riqueza de las infracomunidades. Finalmente, se evaluó si el peso corporal y el sexo de los hospedadores eran relevantes para entender las variaciones de la abundancia de cada taxon, la abundancia total y la riqueza en las infracomunidades. En el 81.5 % de los ejemplares examinados se encontraron 1,653 parásitos, pertenecientes a un total de 11 taxa, a saber, los ectoparásitos del orden Phthiraptera Anaticola crassicornis (Scopoli, 1763, Anatoecus icterodes (Nitzsch, 1818 y Trinoton querquedulae (Linneus, 1758, y los endoparásitos Digenea Australapatemon burti (Miller, 1923 Dubois, 1968, Notocotylus imbricatus (Loss, 1893, Paramonostomum pseudoalveatum Price, 1931, Echinostoma sp. Rudolphi, 1809, Echinoparyphium sp. Dietz, 1909, el Nematoda Porrocaecum sp. Railliet & Henry, 1912 y los Cestoda Cloacotaenia megalops (Nitzsch in Creplin, 1829 Wolfhuegel, 1938 y Fuhrmanacanthus propeteres (Fuhrmann, 1907 Spasskii, 1966. La correlación entre el índice de especificidad STD y la prevalencia de los taxa parasitarios resultó ser negativa y significativa, no así la correlación con la intensidad. No se encontraron diferencias significativas en la abundancia o riqueza de los parásitos entre sexos de las aves, pero sí en la riqueza de especies y en la abundancia total entre sitios. Con excepción de los

  9. Equação de predição da exigência de proteína bruta para aves reprodutoras pesadas na fase de produção Prediction equation of crude protein requirements for broiler breeders hens

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    Carlos Bôa-Viagem Rabello

    2002-06-01

    Full Text Available O objetivo do presente trabalho foi determinar as exigências de proteína para aves reprodutoras pesadas através do método fatorial. A exigência de proteína bruta para mantença (PBm foi determinada por intermédio da técnica do balanço de nitrogênio por meio de ensaio de metabolismo com aves submetidas a quatro dietas com níveis decrescentes de proteína, proporcionando balanço positivo, próximo a zero e negativo. Para determinar a exigência de proteína bruta para o ganho de peso (PBg dois experimentos foram conduzidos, sendo que em um, determinou-se as exigências líquidas de nitrogênio e no outro, a eficiência de utilização do nitrogênio para o ganho, por meio de abates semanais de aves no período de 26 a 33 semanas de idade. A exigência de proteína bruta para produção de ovos (PBo foi determinada através de análises semanais de proteína bruta dos ovos coletados, no período de 31 a 37 semanas de idade, considerando a eficiência de deposição da proteína no ovo. A exigência e eficiência de utilização da proteína para mantença foram 2.282 mg PB/kg0,75/dia e 60,79%; respectivamente. As exigências de PBg e PBo determinadas foram: 356 mg PB/g e 262 mg PB/g, respectivamente, e as eficiências de utilização do nitrogênio, 40 e 46,80%, respectivamente. A equação de predição elaborada para aves reprodutoras pesadas na fase de produção foi: PB=2,282.P0,75+0,356.G+0,262.MO, onde PB é a exigência de proteína bruta (g/ave/dia, P o peso corporal (kg, G o ganho de peso (g/dia e MO a massa de ovos (g/dia.The objective of this study was to determine the protein requirement for broiler breeder hens using factorial method. The requirement of crude protein for maintenance (CPm was determined using nitrogen balance technique in metabolism assay. The birds were fed with four protein levels in order to get a positive, a close to zero and a negative nitrogen balance. To determine the crude protein weight gain

  10. Beija-flores (Aves, Trochilidae e seus recursos florais em uma área urbana do Sul do Brasil Hummingbirds (Aves, Trochilidae and their flowers in an urban area of southern Brazil

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    Luciana Baza Mendonça

    2005-03-01

    Full Text Available A assembléia de flores visitadas por beija-flores e a partilha de recursos entre estas aves foram estudadas em uma área urbana do sul do Brasil. Vinte e duas espécies de plantas, em sua maioria exóticas e/ou não-ornitófilas, receberam visitas dos beija-flores. As espécies de beija-flores registradas apresentaram diferentes combinações de características morfológicas (massa, comprimento do bico, comprimento da asa e relação bico/asa, que refletiram no conjunto de flores exploradas e no papel comunitário desempenhado por cada espécie. De um modo geral, beija-flores com nichos tróficos mais amplos foram também os mais freqüentes na área de estudo, indicando que o ambiente urbano pode ser mais favorável às espécies generalistas.The main purpose of this study was to identify the assemblage of flowers used by hummingbirds in an urban area of southern Brazil, as well as describe the patterns of resource partitioning among the hummingbird species. Twenty two plant species were recorded, which flowers are visited by ten hummingbird species. Most of these plants are exotics and regarded as non-ornithophilous. The hummingbirds displayed different combinations of morphological features (mass, bill length, wing length and relation bill/wing, which were reflected in the sets of flowers visited and the community role played by each species. In general, hummingbirds with largest niche breadths were also the most frequent ones, indicating that urban areas could be more suitable for generalist species.

  11. Qualidade e satisfação na administração local: avaliação da satisfação dos munícipes da Amave NUTIII/AVE

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    Agostinho Cardoso

    2011-08-01

    Full Text Available Atualmente os cidadãos exigem e esperam mais e melhores serviços prestados pelo setor público, daí que a resposta deva ser rápida e eficiente, de modo a agilizar processos, facilitar seu acesso e proporcionar elevados padrões de qualidade. O presente estudo se centra na seguinte questão: Será que existem diferenças significativas ao nível dos antecedentes (imagem, expectativas, valor apercebido e, com destaque particular, a qualidade apercebida, e consequentes da satisfação (lealdade e reclamações dos munícipes? Para o efeito, concebemos uma estrutura de investigação alicerçada no modelo e nas variáveis latentes do ECSI, à qual adicionamos itens dos modelos SERVQUAL, CMT e CAF. O método utilizado foi uma pesquisa quantitativa, de caráter descritivo, sendo alvo de estudo os munícipes que utilizam os serviços prestados pelas câmaras municipais que integram a circunscrição geográfica da Associação de Municípios do Vale do Ave, NUTIII/Ave (Vieira do Minho, Póvoa de Lanhoso, Fafe, Guimarães, Vizela, Vila Nova de Famalicão, Cabeceiras de Basto e Mondim de Basto. Os resultados evidenciam que todos estes fatores têm um efeito positivo e significativo na satisfação global do munícipe e que há diferenças significativas entre as oito câmaras municipais.

  12. Strategic marker selection to detect quantitative trait loci in chicken Seleção estratégica de marcadores para detecção locos para características quantitativas em aves

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    Deborah Clea Ruy

    2005-04-01

    Full Text Available Selective genotyping for a certain trait in individuals with extreme phenotypes contributes sufficient information to determine linkage between molecular markers and quantitative trait loci (QTL. In this experiment an F2 population, developed by crossing males from a broiler line with females from a layer line, was employed to detect QTL on chromosomes 3 and 5. Twenty-eight performance and carcass traits were measured in F2 offspring, and phenotypic correlations between traits were calculated. Body weight at 42 days (BW42 presented the greatest positive correlations with most other traits, with correlation between body weights at 35 and 41 days, weight gain between birth and 35, 41 and 42 days, as well as weights of carcass and some body parts superior to 0.8. One hundred-and-seventy F2 offspring, representing the top (4.5% and the bottom (4.5% of a normal distribution curve of BW42, were selected with equal proportions of males and females, and within dam family. Samples were genotyped for 19 informative markers on chromosome 3, and 11 markers on chromosome 5. Marker allelic frequencies of phenotypic groups with high and low BW42 were compared with a chi-square test. Four regions on chromosome 3 and three regions on chromosome 5 had markers that were suggestively associated with BW42 (P A genotipagem seletiva de indivíduos com fenótipos extremos para uma determinada característica contribui com informação suficiente para determinar a ligação entre marcadores moleculares e locos para características quantitativas (QTL. Neste estudo uma população F2, formada a partir do cruzamento de uma linha parental de aves para corte com uma linha de postura foi empregada para obtenção de medidas fenotípicas e genotipagem por marcadores microssatélites, posicionados nos cromossomos 3 e 5. Foram medidas 28 características de desempenho e carcaça e determinada a correlação fenotípica entre elas. A característica peso vivo aos 42 dias (BW42

  13. Notas a la gaviota libertada en el campo, 31 de enero de 1951

    OpenAIRE

    Valverde Gómez, José Antonio, 1926-2003

    2008-01-01

    Notas a la Gaviota reidora (Larus ridibundus) libertada en el campo, cerca del Puente Colgante de Valladolid, el 31 de enero de 1951. Incluye observaciones de patos domésticos y Pavos reales (Pavo cristatus), y un pequeño esquema del enclave observado. Notes to the Common Black-headed Gull (Larus ridibundus) released in the field, near the Puente Colgante of Valladolid, the 31st of January of 1951. Observations of domestic ducks and Indian Peafowls (Pavo cristatus) and a little map of the ...

  14. Tamaño relativo encefálico e índices cerebrales en Vanellus c. chilensis (Aves: Charadriidae Relative encephalic size and cerebral indices of Vanellus c. chilensis (Aves: Charadriidae

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    ESTELA PISTONE

    2002-09-01

    Full Text Available Se analizó la composición cuantitativa encefálica y se estimaron índices cerebrales en Vanellus c. chilensis (tero o queltehue. Se estimó el volumen porcentual e índices cerebrales del encéfalo total y de siete de sus componentes, como así también los núcleos de relevo de las vías trigeminal, visual y acústica. El telencéfalo es el componente de mayor volumen relativo, siendo el neoestriado la estructura telencefálica de tamaño superior. El desarrollo del estriado propiamente dicho, tecto óptico y los núcleos de relevo de las vías visual y trigeminal concuerdan con la dieta carnívora de Vanellus c. chilensis. El tamaño relativo del Wulst y de los núcleos de la vía acústica se asocia a las complicadas tácticas que utiliza esta especie en la defensa del nido. Los índices cerebrales de las estructuras encefálicas analizadas indican que Vanellus c. chilensis es un ave progresivaThe quantitative encephalic composition and cerebral indices of Vanellus c. chilensis (southern lapwing were analyzed. The percentual volumes and cerebral indices for the whole encephalon and for seven components were calculated as well as relevous nuclei of the trigeminal, visual and acoustic pathways. The component of greater relative volume is the telencephalon. The neostriatum is the most developed encephalic structure. Developing of bulbus olfactorius, striatum, tectum opticum and relevous nuclei of visual and trigeminal pathways are according with the carnivorous diet of Vanellus c. chilensis. The relative size of Wulst and relevous nuclei of acoustic pathway appears associated with the complex tactics used by this species in the defense of nest. Cerebral indices of all the analyzed structures suggest that Vanellus c. chilensis is a progresive bird

  15. Aspectos estructurales y cuantitativos del ovario de Fulica armillata (Aves: Rallidae

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    Mirian Bulfon

    2012-02-01

    Full Text Available Se estudiaron los aspectos morfohistológicos y cuantitativos del ovario de Fulica armillata durante la fase de recrudescencia gonadal. Se utilizaron 5 hembras adultas. El análisis morfohistológico reveló la presencia de numerosos folículos en diferentes estadios de desarrollo y regresión. El epitelio simple de células granulosas caracterizó a los ovocitos primordiales y el pseudoestratificado a los folículos previtelogénicos, ambos tipos foliculares exhibieron un notorio cuerpo de Balbiani. En los folículos vitelogénicos blancos y amarillos (> de 1 mm se evidenció una compleja pared folicular formada por la zona radiada, el epitelio folicular estratificado y las envolturas tecales bien delimitadas, mientras que, en los vitelogénicos amarillos (> de 3 mm fue observado un epitelio simple con células cúbicas muy basófilas. Se identificaron dos tipos de atresia folicular: 1 pared folicular intacta o no bursting, la involución se realiza en el interior del folículo, comprende a la atresia lipoidal (Ovocitos primordiales y lipoglandular (folículos previtelogénicos y vitelogénicos pequeños y 2 atresia por ruptura de la pared o bursting con extrusión del contenido ovoplásmico (folículos vitelogénicos > 1 mm. El análisis cuantitativo reveló una diferencia significativa (p <0,05, entre los folículos en desarrollo (< de 2 mm y los folículos mayores e idéntica diferencia entre lo folículos atrésicos pequeños (lipoidales y lipoglandulares y los folículos bursting. Los procesos de crecimiento y diferenciación (foliculogénesis y vitelogénesis y el de atresia folicular se desarrollan normalmente durante la fase de recrudescencia gonadal, contribuyendo a la homeostasis del ovario de esta ave.

  16. Biogeography and taxonomy of racket-tail hummingbirds (Aves: Trochilidae: Ocreatus): evidence for species delimitation from morphology and display behavior.

    Science.gov (United States)

    Schuchmann, Karl-L; Weller, André-A; Jürgens, Dietmar

    2016-11-27

    We analyzed geographic variation, biogeography, and intrageneric relationships of racket-tail hummingbirds Ocreatus (Aves, Trochilidae). Presently, the genus is usually considered monospecific, with O. underwoodii including eight subspecies (polystictus, discifer, underwoodii, incommodus, melanantherus, peruanus, annae, addae), although up to three species have been recognized by some authors. In order to evaluate the current taxonomy we studied geographic variation in coloration, mensural characters, and behavioral data of all Ocreatus taxa. We briefly review the taxonomic history of the genus. Applying the Biological Species Concept, species delimitation was based on a qualitative-quantitative criteria analysis including an evaluation of character states. Our results indicate that the genus should be considered a superspecies with four species, the monotypic Ocreatus addae, O. annae, and O. peruanus, and the polytypic O. underwoodii (including the subspecies underwoodii, discifer, incommodus, melanantherus, polystictus). In this taxonomic treatment, O. annae becomes an endemic species to Peru and O. addae is endemic to Bolivia. We recommend additional sampling of distributional, ethological, and molecular data for an improved resolution of the evolutionary history of Ocreatus.

  17. Comunidade de aves da Reserva Estadual de Gurjaú, Pernambuco, Brasil Bird communities of the Gurjaú Reserve, Pernambuco State, Brazil

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    Rachel Maria de Lyra-Neves

    2004-09-01

    Full Text Available Estudos quali-quantitativos foram realizados em um fragmento florestal da Reserva Estadual de Gurjaú, Cabo de Santo Agostinho, Pernambuco, Brasil. Foram registradas 220 espécies de aves no levantamento qualitativo. Através da contagem por pontos, foram identificadas 175 espécies em 6.470 contatos (270 amostras. A freqüência de ocorrência de 75% foi registrada para 43 espécies (19,6%; para a maioria das espécies a freqüência de ocorrência esteve abaixo de 25%.A qualitative and quantitative bird surveys were carried out in a forest fragment in Gurjau Reserve, Santo Agostinho Cape, Pernambuco State, Brazil. By qualitative census were registered 220 different bird species. Concerning the point counts, were identified 175 different species in 6.470 contacts (270 samples. A frequency of occurrence of 75% was registered for 43 species (19,6%; the most part of species had a frequency of occurrence below 25%.

  18. A novel Haemosporida clade at the rank of genus in North American cranes (Aves: Gruiformes).

    Science.gov (United States)

    Bertram, Miranda R; Hamer, Sarah A; Hartup, Barry K; Snowden, Karen F; Medeiros, Matthew C; Outlaw, Diana C; Hamer, Gabriel L

    2017-04-01

    The unicellular blood parasites in the order Haemosporida are highly diverse, infect many vertebrates, are responsible for a large disease burden among humans and animals, and have reemerged as an important model system to understand the evolutionary and ecological dynamics of host-parasite interactions. The phylogenetics and systematics of Haemosporida are limited by poor sampling of different vertebrate host taxa. We surveyed the Haemosporida of wild whooping cranes (Grus americana) and sandhill cranes (Grus canadensis) (Aves: Gruiformes) using a combination of morphological and molecular approaches. We identified Haemoproteus antigonis in blood smears based on published morphological descriptions. Phylogenetic analysis based on partial cytochrome b (cytb) and cytochrome oxidase (coI) sequences placed H. antigonis parasites in a novel clade, distinct from all avian Haemosporida genera for which cytb and/or coI sequences are available. Molecular clock and divergence estimates suggest this crane clade may represent a new genus. This is the first molecular description of H. antigonis and the first report of H. antigonis in wild whooping cranes, an endangered bird in North America. Further sampling of Haemosporida, especially from hosts of the Gruiformes and other poorly sampled orders, will help to resolve the relationship of the H. antigonis clade to other avian Haemosporida genera. Our study highlights the potential of sampling neglected host species to discover novel lineages of diverse parasite groups. Copyright © 2016 The Authors. Published by Elsevier Inc. All rights reserved.

  19. Molecular methods to evaluate effects of feed additives and nutrients in poultry gut microflora Metodologias moleculares para avaliar efeitos de aditivos e nutrientes na microflora intestinal das aves

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    Edgar O. Oviedo-Rondón

    2009-07-01

    Full Text Available Intestines of each animal are the niche of a complex and dynamic ecosystem with important effects to the host. The members or final products of this ecosystem influence nutrient digestion, absorption, mucosa metabolism, general physiology, and local and systemic immunological responses of avian hosts. Better understanding of the avian gut microbial ecosystem may lead to improvements on poultry productivity, health, welfare, and reduction of food borne pathogens and the environmental impact of poultry production for a more sustainable industry. Molecular methods of microbial ecology are key tools to gain this knowledge. The objective of this presentation is to outline the basic concepts, applications, advantages, limitations, and evolution of these molecular methods used to study intestinal microbial ecology. The final goal is to stimulate their application in poultry applied research and development of new feed additives. Some practical examples in poultry research will be described to illustrate their relevance to advance in control methods for pathogens, avoid or manage disbiosis or subclinical intestinal diseases, reduce environmental impact, elucidate effects of nutrients in gut mucosa, microflora, and in general to improve poultry performance.O intestino de cada animal é o nicho de um ecossistema complexo e dinâmico com efeitos importantes para o hospedeiro. As comunidades microbianas componentes deste ecossistema e/ou os produtos finais do metabolismo influenciam a digestão e absorção de nutrientes, o metabolismo das mucosas, a fisiologia geral e as respostas imunitárias locais e gerais da ave hospedeira. A melhor compreensão do ecossistema microbiano do intestino das aves pode levar a melhorias na produtividade, saúde, bem estar, e redução de agente patogênicos dos alimentos e do impacto ambiental da produção avícola para uma indústria mais sustentável. Os métodos moleculares da ecologia microbiana são ferramentas chaves

  20. Perda de diversidade taxonômica e funcional de aves em área urbana no sul do Brasil

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    Anne G. Sacco

    2015-09-01

    Full Text Available RESUMO A urbanização é um processo globalmente estudado e considerado um dos distúrbios mais drásticos sobre a biodiversidade. Este estudo teve como objetivo avaliar como diferentes intensidades de urbanização atuam na estruturação da avifauna em uma cidade de tamanho médio e inserida em região de área úmida. Além das métricas tradicionais de riqueza, abundância e composição taxonômica, verificou-se como a diversidade e redundâncias funcionais das aves são influenciadas pelo gradiente urbano. A área urbana estudada foi a cidade de Pelotas (31°46'S, 52°20'W, extremo sul do Brasil, que está inserida em uma área úmida do bioma Pampa. A amostragem das aves e a medida das variáveis urbanas (número de árvores, número de construções de até dois andares ou de mais de dois andares, presença de ambiente aquático e presença de ambiente aberto foram realizadas em 216 pontos fixos de observação que foram marcados em diferentes intensidades de urbanização. Os atributos funcionais utilizados para caracterizar as espécies foram os relacionados à massa, dieta, substrato de forrageamento e substrato de nidificação. O aumento da intensidade de urbanização diminuiu a riqueza, a abundância e a diversidade funcional, sendo que a redundância, diferente do esperado, não aumentou com a urbanização. Foi possível observar que os atributos relacionados a áreas com urbanização mais intensa (com contruções de até dois andares e de mais de dois andares foram: preferência por forrageamento no ar, onivoria e ninhos em cavidades. Os atributos relacionados a áreas com menor intensidade de urbanização e com áreas úmidas foram: preferência de forrageamento na água e de ninhos sobre a água; e aquele relacionados a menores intensidades de urbanização (com maior número de árvores e maior presença de ambientes abertos foram: preferência por ninhos em vegetação, em locais baixos e no solo e carnivoria. O estudo

  1. La conservación de las aves más allá de las áreas naturales protegidas: el caso de la avifauna del Rancho Santa Elena, Hidalgo

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    Miguel Angel Martínez-Morales

    2013-07-01

    Full Text Available La conservación de la biodiversidad dentro de las áreas naturales protegidas (ANP no siempre es eficiente y suficiente, no obstante sus logros como uno de los instrumentos más consolidados de conservación. En este trabajo discutimos la pertinencia de considerar la información generada más allá de un ANP para elaborar e implementar su programa de manejo con una perspectiva de conservación regional; esto, a través de un ejercicio de comparación de la información generada sobre la avifauna dentro y fuera del ANP. En este marco, presentamos los avances en el conocimiento de la diversidad de aves en el bosque templado del Rancho Santa Elena (RSE, un conjunto predial ubicado en la Sierra de las Navajas, próximo al Parque Nacional El Chico (PNEC, en el estado de Hidalgo, México. Desde 2005 a la fecha hemos registrado 90 especies de aves a partir de muestreos con redes de niebla, del recorrido no sistemático de senderos y de observaciones incidentales. Estimamos que esta riqueza de especies representa aproximadamente el 70% de la riqueza esperada en el sitio. En contraste, en el PNEC se han registrado 74 especies desde 1974, de las cuales al menos ocho representan registros incorrectos o probablemente incorrectos. Asimismo, en el RSE hemos registrado una mayor diversidad de gremios trófico-conductuales y de especies endémicas a México que las registradas en el PNEC. Los inventarios y la generación de conocimiento más allá de las ANP pueden ser insumos importantes en la definición e implementación de sus estrategias de manejo, las cuales deben tener una perspectiva de conservación regional.

  2. Guía de campo de las especies de aves y mamíferos marinos del sur de Chile: especies comunes de avistar en las regiones de Los Lagos y Aysén.

    OpenAIRE

    Hucke-Gaete, Rodrigo; Ruiz Troemel, Jorge

    2010-01-01

    Dentro de la macrofauna marina están las aves y los mamíferos en donde en Chile hay una gran diversidad.En este libro se describen aspectos generales sobre el área en la cual se focaliza el estudio, una descripción general de los grupos animales incluidos (con figuras ilustradas de cada animal), algunos aspectos clave sobre los códigos de conducta para la observación responsable de fauna marina silvestre, así como descripciones detalladas de las características más relevantes para la identifi...

  3. Differential effects of habitat fragmentation on birds and mammals in Valdivian temperate rainforests Efectos diferenciales de la fragmentación del hábitat sobre aves y mamíferos del bosque valdiviano

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    DOUGLAS A. KELT

    2001-12-01

    Full Text Available Four recent studies on Chilean vertebrates underscore the very different effects that habitat fragmentation may have under different conditions. In southern Chile, birds exhibited significant species-area relationships, whereas the more depauperate small mammal community did not. The avifauna of highly isolated rainforest remnants in Fray Jorge National Park (IV Región presented steeper species-area relations than those in southern Chile, reminiscent of land-bridge islands after faunal relaxation. The small mammal results were unexpected but may reflect the reduced vagility and immigration potential of this group. Additionally, the inter-remnant matrix habitat may support large populations of only some species, allowing them to capitalize on resources that are available in forest remnants. Such an effect is less likely for birds due to their greater vagility. Although the influence of remnant area is more clearly demonstrated for birds in Chile, it appears that small mammal assemblages may be more immediately impacted by habitat fragmentation than are birds, and that further fragmentation of temperate rainforests will seriously impoverish the small mammal assemblage, many of whose members are endemic to this region. Further research should emphasize the role of the inter-remnant matrix, of habitat corridors, and of the relative sensitivity of different species to matrix/corridor quality and remnant isolationCuatro estudios recientes en vertebrados chilenos subrayan los efectos muy diversos que la fragmentación del hábitat puede tener bajo diversas condiciones. En el sur de Chile, las aves exhibieron relaciones significativas entre la riqueza de especies y el área de hábitat ("especies-area", mientras que tal relación no se observó en la comunidad de pequeños mamíferos, la cual tiene menos especies. La avifauna de los fragmentos remanentes altamente aislados del Parque Nacional Fray Jorge (IV Región presentaron relaciones especies

  4. Frugivoria por aves em Eugenia uniflora L. (Myrtaceae em ambientes antropizados na região de Sorocaba–SP. Frugivory by birds in Eugenia uniflora L. (Myrtaceae at anthropic environment in Sorocaba–SP region

    Directory of Open Access Journals (Sweden)

    Nayara Francine LAMBERTI

    2012-12-01

    Full Text Available As aves, assim como toda fauna consumidora de frutos possuem grande importância no processo de dispersão de sementes. O declínio de suas populações pode gerar consequências para a reprodução e para o crescimento populacional dessas plantas zoocóricas, se a dispersão não for adequada ou se a quantidade de sementes dispersas for insuficiente. A espécie Eugenia uniflora (Myrtaceae, nativa do Brasil, é popularmente conhecida como pitangueira. Possui frutos globosos e sulcados, apresentando cores brilhantes desde o laranja, até vermelho ou preto, com polpa carnosa e agridoce, normalmente com umaa duas sementes. O presente estudo caracterizou as espécies de aves consumidoras dos frutos de E. uniflora, em dois ambientes da região de Sorocaba, Estado de São Paulo. O estudo foi realizado entre fevereiro e setembro de 2012 com seis indivíduos de E. uniflora, sendo três em ambiente altamente antropizado, e três em área menos antropizada. A avifauna foi amostrada por meio de observações focais, considerando sua riqueza, abundância relativa, frequência de visitas, comportamento e diversidade. O padrão fenológico de E. uniflora também foi descrito, assim como a quantidade de frutos produzidos. Foram realizadas 116 horasde observação focal, durante as quais foram registradas 185 visitas de aves pertencentes àsfamílias Thamnophilidae, Vireonidae, Turdidae, Thraupidae consumindo seus frutos. Os resultadosobtidos indicam que áreas menos antropizadas, mais arborizadas e com fragmentos mais próximos, como a área urbana de Araçoiaba, apresentam maior riqueza, abundância e diversidade de aves consumidoras de E. uniflora, quando comparada com a área urbana de Sorocaba. The birds, as all frugivorous animals, have great importance to seed dispersion process. Populational decline can generate consequences for the reproduction and population growth of many zoochoric plants if the dispersion is not adequate or if the amount of

  5. O papel das aves na dispersão e germinação de sementes do pau-incenso (Pittoporum undulatum Vent. em um remanescente de Mata Atlântica. Bird role in seed dispersion and germination of Pittosporum undulatum Vent., seeds in an Atlantic Forest remnant.

    Directory of Open Access Journals (Sweden)

    Mariana Lopes CAMPAGNOLI

    2016-06-01

    Full Text Available A invasão biológica pela espécie Pittosporum undulatum Vent. pode ocasionar degradação de ecossistemas nativos, perda de espécies e de serviços ecossistêmicos. Além das características biológicas que favorecem seu estabelecimento, seus frutos são fontes alimentares para algumas espécies de aves, que acabam por dispersar suas sementes. O presente estudo foi realizado no Parque Estadual Alberto Löfgren, e visou verificar as espécies de aves potencialmente dispersoras do pau-incenso, comparar os registros de alimentação obtidos para esta árvore e para outras seis espécies arbóreas locais e avaliar a influência da ingestão das sementes pelas aves na sua taxa de germinação. A coleta de dados consistiu em observações focais das aves em atividade de forrageio no pau-incenso e a captura de indivíduos com redes de neblina para coleta de sementes nas fezes. Testes de germinação foram realizados com as sementes coletadas das fezes e diretamente dos frutos maduros. No total, foram encontradas 107 sementes nas fezes de oito sabiás, pertencentes a três espécies: Turdus rufiventris, Turdus amaurochalinus e Turdus albicollis. Não encontramos diferenças significativas nas taxas de germinação entre os tratamentos. Apesar da passagem das sementes pelo trato digestório das aves não ter alterado significativamente as taxas de germinação, os sabiás podem ser importantes dispersores do pau-incenso, permitindo a colonização de novas áreas por esta espécie exótica e intensificando seu processo de invasão biológica na Mata Atlântica.Biological invasion by the species Pittosporum undulatum Vent. could bring degradation to native ecosystems and loss of biodiversity and ecological services. Besides the biological features favoring the establishment of the species in natural environments, some bird species use its fruits as food sources, being responsible for its seed dispersion. The present study was held at Alberto L

  6. La dieta de la lechuza (Tyto alba (Aves: Strigiformes en hábitats naturales y antropogénicos de la región central de Cuba Diet of Barn Owl (Tyto alba (Aves: Strigiformes in natural and anthropogenic habitat in central Cuba

    Directory of Open Access Journals (Sweden)

    Abel Hernández-Muñoz

    2011-03-01

    Full Text Available Para determinar los hábitos tróficos de la lechuza, Tyto alba, se analizaron 1232 egagrópilas recolectadas entre 1994 y 2001 en 24 localidades de la región central de Cuba. Se encontraron 3943 presas; los roedores exóticos (Mus musculus y Rattus spp. fueron las presas dominantes y representaron 80% del total. Otros tipos de presas fueron de menor frecuencia; por ejemplo, insectos (6.1%, murciélagos (5%, anfibios (4.8%, aves (3.6% y reptiles (0.2%. Se agruparon las localidades de recolecta de egagrópilas en 2 categorías de hábitat: antropogénicos y naturales, para explorar el efecto de los disturbios antrópicos en la dieta de la lechuza. Contrario a lo esperado, no se encontró variación significativa en el índice de amplitud trófica de Levins (Bantropogénicos= 1.32 ± 0.3 vs Bnaturales = 1.38 ± 0.4. La composición de la dieta en ambos hábitats no difiere, al menos en la proporción de las diferentes clases, aunque existe la tendencia a depredar más aves en hábitats naturales que en sitios perturbados donde los insectos son más frecuentes. Los resultados sugieren que tanto en hábitats antropogénicos como naturales, las lechuzas se comportan como depredadores efectivos de las poblaciones de roedores múridos introducidos.To determine food habits of Barn Owl, Tyto alba, we analyzed 1232 pellets collected from 24 localities in central Cuba from 1994 to 2001. The pellets yielded 3943 prey items, with introduced rodents (Mus musculus and Rattus spp. being the primary prey, accounting for 80% of items in the diet. Other prey classes were of minor frequency; e.g., insects (6.1%, bats (5%, amphibians (4.8%, birds (3.6%, and reptiles (0.2%.We grouped pellet collection localities into 2 habitat categories: "anthropogenic" and "natural," to explore the effect of anthropogenic disturbance on the diet Barn Owl. Contrary to our expectation, we found no significant difference in the Levin's niche-breadth index (B, calculated for the

  7. Osteological histology of the Pan-Alcidae (Aves, Charadriiformes): correlates of wing-propelled diving and flightlessness.

    Science.gov (United States)

    Smith, N Adam; Clarke, Julia A

    2014-02-01

    Although studies of osteological morphology, gross myology, myological histology, neuroanatomy, and wing-scaling have all documented anatomical modifications associated with wing-propelled diving, the osteohistological study of this highly derived method of locomotion has been limited to penguins. Herein we present the first osteohistological study of the derived forelimbs and hind limbs of wing-propelled diving Pan-Alcidae (Aves, Charadriiformes). In addition to detailing differences between wing-propelled diving charadriiforms and nondiving charadriiforms, microstructural modifications to the humeri, ulnae and femora of extinct flightless pan-alcids are contrasted with those of volant alcids. Histological thin-sections of four species of pan-alcids (Alca torda, †Alca grandis, †Pinguinus impennis, †Mancalla cedrosensis) and one outgroup charadriiform (Stercorarius longicaudus) were compared. The forelimb bones of wing-propelled diving charadriiforms were found to have significantly thicker (∼22%) cortical bone walls. Additionally, as in penguins, the forelimbs of flightless pan-alcids are found to be osteosclerotic. However, unlike the pattern documented in penguins that display thickened cortices in both forelimbs and hind limbs, the forelimb and hind limb elements of pan-alcids display contrasting microstructural morphologies with thickened forelimb cortices and relatively thinner femoral cortices. Additionally, the identification of medullary bone in the sampled †Pinguinus impennis specimen suggests that further osteohistological investigation could provide an answer to longstanding questions regarding sexual dimorphism of Great Auks. Finally, these results suggest that it is possible to discern volant from flightless wing-propelled divers from fragmentary fossil remains. Copyright © 2013 Wiley Periodicals, Inc.

  8. The breeding biology, nest success, habitat and behavior of the endangered Saffron-cowled Blackbird, Xanthopsar flavus (Aves: Icteridae, at an Important Bird Area (IBA in Rio Grande do Sul, Brazil

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    Luciane R. da Silva Mohr

    2017-10-01

    Full Text Available ABSTRACT The Saffron-cowled Blackbird, Xanthopsar flavus (Gmelin, 1788, is a globally vulnerable icterid endemic to grasslands and open areas, and a priority species for research and conservation programs. This contribution provides information on the population size, habitat, behavior, breeding biology and nest success of X. flavus in two conservation units (CUs in Viamão, state of Rio Grande do Sul, Brazil: the Environmental Protection Area Banhado Grande, and the Wildlife Refuge Banhado dos Pachecos, classified as an “Important Bird Area”. Searches for X. flavus were carried out mainly in open areas, the type of habitat favored by the species. Outside the breeding season individual behavior was recorded by the ad libitum method; during the breeding season, selected X. flavus pairs were observed following the sequence sampling method. The research areas were visited once a month, totaling approximately 530 hours of observations (September 2014 to June 2016 over 84 days, which included two breeding seasons. The species was observed across all months (not necessarily within the same year and several X. flavus flocks were encountered, some with more than one hundred individuals (range = 2-137. Additionally, the behavior and feeding aspects, habitat use and breeding information on X. flavus were recorded. Two breeding colonies were found, and eleven nests were monitored. The estimated nesting success was 10% in Colony 1, but zero in Colony 2, where all eggs and nestlings were predated. Saffron-cowled Blackbirds were recorded in mixed flocks, mostly with Pseudoleistes guirahuro (Vieillot, 1819, P. virescens (Vieillot, 1819 and Xolmis dominicanus (Vieillot, 1823, the last also a globally endangered species. The collected information highlights the importance of CUs for the maintenance of X. flavus populations in the region. Maintenance of proper areas for feeding and breeding is necessary and urgent. Information from current research is being

  9. Composición y riqueza de las comunidades de aves, muciélagos y escarabajos coprófagos asociados a agro-paisajes y áreas protegidas de un bosqeu tropical seco (Norte de Costa Rica)

    OpenAIRE

    Carvajal Sánchez, José Pablo

    2014-01-01

    [ES] La presente investigación tuvo como objetivo general analizar y comparar la composición y riqueza de las comunidades aves, murciélagos y escarabajos coprófagos presentes en seis tipos de cobertura vegetal: bosque ribereño, bosque secundario, charral, cercas vivas, pastizales (potreros), con alta y baja cobertura arbórea. La investigación se realiza en un área protegida del bosque seco tropical ¿Parque Nacional Palo Verde¿ y otra de agrocenósis, Cañas (N de Costa Rica). Los resultado...

  10. Species differences in total mercury concentration in gulls from the Gulf of Gdansk (Southern Baltic).

    Science.gov (United States)

    Szumiło-Pilarska, Emilia; Grajewska, Agnieszka; Falkowska, Lucyna; Hajdrych, Julia; Meissner, Włodzimierz; Frączek, Tomasz; Bełdowska, Magdalena; Bzoma, Szymon

    2016-01-01

    Aquatic birds occupy a high position in the trophic pyramid of the Baltic Sea. This means that they accumulate the greatest amount of harmful substances, including mercury, in their bodies. This element penetrates into their systems mainly via the alimentary canal. The amount of mercury absorbed from food depends on how badly the environment is polluted with this metal. The aim of this study was to discover the concentrations of total mercury (HgT) in the contour feathers, muscles, brain, lungs, liver, kidneys, heart and blood of four gull species Herring Gull (Larus argentatus), Common Gull (Larus canus), Black-headed Gull (Larus ridibundus) and Great Black-backed Gull (Larus marinus) and organic mercury (Hgorg) in the liver and brain of Herring Gull. The most important characteristic of the results obtained for the studied gulls was the statistically significant differences between the four species, probably resulting from their different diets-confirmed by stable-isotopes analysis (δ(15)N and δ(13)C). A logarithmic dependence was found between HgT in the blood and HgT in the brain of the Herring Gull. The authors suggest that among gulls burdened with the greatest mercury load, it is possible that the brain is protected by higher Hg accumulation in the muscles. The percentage share of Hgorg in the brain and liver of the Herring Gull depended on the concentration of HgT in these tissues and was always higher in the brain. In none of the cases, did the mercury levels assayed in the internal gulls' tissues exceed values associated with adverse health effects. Copyright © 2015 Elsevier GmbH. All rights reserved.

  11. Shifts in composition of avian communities related to temperate-grassland afforestation in southeastern South America Alterações na composição de comunidades de aves relacionadas ao florestamento de campos temperados no sudeste da América do Sul

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    Rafael A. Dias

    2013-03-01

    Full Text Available Afforestation of temperate grasslands with fast-growing trees for industrial pulpwood production is spreading in South America. Despite high afforestation rates resulting from governmental policies that stimulate pulpwood production in grasslands of southern Brazil and Uruguay, the impact of this activity on biodiversity remains to be properly assessed. We used an Impact-Reference study design to evaluate how grassland afforestation affects the composition of grassland bird assemblages. We sampled eucalyptus plantations and neighboring natural grasslands in southern Brazil from 2006-2009, and relied on nested sampling and analysis to separate the effects of afforestation from the natural variability of grasslands. We recorded a significant difference in composition between assemblages from grasslands and tree plantations. Species adapted to open, treeless areas tended to be negatively affected in relation to edge or forest birds in eucalyptus plantations. Afforestation is systematically replacing the bird assemblage of hilltop grasslands by a collection of common edge and forest species that occur in nearby riverine and hillside forests. Although most grassland birds negatively affected by tree plantations are common and widespread, observed and predicted afforestation rates in southeastern South America may result in regional population reductions in the near future.O florestamento de campos temperados com árvores de crescimento rápido para a produção industrial de celulose está aumentando na América do Sul. Apesar das elevadas taxas de florestamento resultantes de políticas governamentais que estimulam o plantio de árvores para celulose em campos do sul do Brasil e Uruguai, o impacto dessa atividade sobre a biodiversidade ainda carece de avaliação adequada. Utilizamos um delineamento experimental do tipo impacto-referência para avaliar como o florestamento dos campos afeta a composição da assembleia de aves campestres. Amostramos

  12. Full-scale ash deposition measurements at Avedøre Power Plant unit 2 during suspension-firing of wood with and without coal ash addition

    DEFF Research Database (Denmark)

    Wu, Hao; Shafique Bashir, Muhammad; Jensen, Peter Arendt

    The formation of deposits during suspension-firing of wood at Avedøre Power Plant unit 2 (AVV2) was studied by using an advanced deposit probe system. The tests were conducted both with and without coal ash addition, and at two different locations with flue gas temperatures of 1250-1300 oC and 750...... with a high flue gas temperature of 1250-1300 oC, although the addition of coal fly ash increased the differential deposit formation rate (DDF-rate) and the ash deposition propensity, the deposit removal frequency were considerably increased and the major shedding mechanism was changed from soot...... corrosion. At the location with a low flue gas temperature of 750-800 oC, the addition of coal fly ash reduced the ash deposition propensity and caused the formed deposits being easily removable. Moreover, the KCl and KOH/K2CO3 found in the low-temperature deposits without coal ash addition disappeared when...

  13. Digenean parasites of six species of birds from Formosa Province, Argentina Digéneos parásitos de seis especies de aves de la provincia de Formosa, Argentina

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    Lía Inés Lunaschi

    2009-04-01

    Full Text Available The aim of this paper is to increase the knowledge of the diversity of digenean parasites from birds collected in Formosa Province, Argentina. The helminthological survey of 15 specimens of 6 bird species revealed the presence of 5 digenean species: Clinostomatopsis sorbens (Braun, 1899 and Clinostomum marginatum (Rudolphi, 1819 (Clinostomidae from the esophagus of Tigrisoma lineatum (Boddaert; Glaphyrostomum propinquum Braun, 1901 (Brachylaimidae from the cloaca of Guira guira (Gmelin; Stomylotrema vicarium Braun, 1901 (Stomylotrematidae from the cloaca of Busarellus nigricollis (Latham and Buteogallus meridionalis (Latham; and Athesmia heterolecithodes (Braun, 1899 (Dicrocoeliidae from the bile canaliculi of G. guira, Milvago chimachima (Vieillot and Rostrhamus sociabilis (Vieillot. The present study adds new morphometric data on 2 species of digeneans (C. sorbens and G. propinquum and new host records for C. sorbens, G. propinquum, A. heterolecithodes and S. vicarium. The genera Clinostomatopsis Dollfus, 1932 and Glaphyrostomum Braun, 1901 are reported for the first time in Argentina.El propósito de este trabajo es incrementar el conocimiento sobre la diversidad de digéneos parásitos de aves recolectadas en la provincia de Formosa, Argentina. El estudio helmintológico de 15 ejemplares de 6 especies de aves reveló la presencia de 5 especies de digéneos: Clinostomatopsis sorbens (Braun, 1899 y Clinostomum marginatum (Rudolphi, 1819 (Clinostomidae halladas en el esófago de Tigrisoma lineatum (Boddaert; Glaphyrostomum propinquum Braun, 1901 (Brachylaimidae recolectada de la cloaca de Guira guira (Gmelin; Stomylotrema vicarium Braun, 1901 (Stomylotrematidae encontrada en la cloaca de Busarellus nigricollis (Latham y Buteogallus meridionalis (Latham; Athesmia heterolecithodes (Braun, 1899 (Dicrocoeliidae hallada en los canalículos biliares de G. guira, Milvago chimachima (Vieillot y Rostrhamus sociabilis (Vieillot. El presente estudio

  14. 40 CFR 81.350 - Wisconsin.

    Science.gov (United States)

    2010-07-01

    ... North: Green Bay West: W. Mason St. and Ashland Ave., along Ashland north to Matter St., west to Crocker St., north on Crocker St. to Bylsby St., then to Green Bay South: W. Mason St. and Ashland Ave., east along Mason to Irwin Ave. East: W. Mason St., and Irwin Ave., along Irwin Ave. north to Green Bay...

  15. Variação local na composição da comunidade de aves no Parque Estadual Carlos Botelho, São Miguel Arcanjo – SP e proposta para o monitoramento do impacto do ecoturismo. Local variation in bird communities composition at Carlos Botelho State Park, São Miguel Arcanjo – SP, Southeastern Brazil and proposals for monitoring the impact of ecotourism.

    Directory of Open Access Journals (Sweden)

    Bruna Gonçalves da SILVA

    2010-12-01

    Full Text Available Como todas as atividades humanas, o ecoturismo apresenta o potencial de impactar negativamente o meio ambiente, necessitando ser monitorado e manejado. As aves podem ser incluídas em protocolos de monitoramento desse impacto, porém devem ser considerados outros fatores que influenciam a composição das comunidades de aves antes de se propor tais protocolos. Dentre estes se destaca a influência da heterogeneidade estrutural da vegetação sobre a distribuição e a abundância das aves. Os objetivos deste trabalho foram: verificar como esse fator atua localmente numa área de Mata Atlântica sob uso público e propor um protocolo de monitoramento de impacto dessa atividade que utilize as aves como indicadores. A avifauna foi amostrada ao longo de duas trilhas, uma na qual o turismo é monitorado e outra sob o sistema autoguiado. A heterogeneidade estrutural ao longo dessas trilhas foi avaliada, e as duas comunidades de aves comparadas em relação à riqueza, composição de espécies, abundância relativa, diversidade e estrutura trófica. Foram utilizados os métodos de pontos de escuta e o de pontos quadrantes. As trilhas diferiram significativamente na maioria dos parâmetros de estrutura da vegetação analisados e na composição de espécies de aves, mas não nos demais parâmetros considerados para a avifauna. Dezessete espécies apresentaram abundância relativa significativamente diferente entre as áreas e, destas, seis relacionadas a parâmetros estruturais da vegetação. Propõe-se a avaliação do impacto do uso público sobre a avifauna em cada uma das trilhas através do monitoramento da abundância relativa das espécies considerando possíveis alterações estruturais na vegetação local e o monitoramento de 15 espécies de fácil detecção e que não diferiram significativamente em abundância relativa entre as trilhas.Like all human activities, ecotourism has the potential to negatively impact the environment and need

  16. Increasing Avermectin Production in Streptomyces avermitilis by Manipulating the Expression of a Novel TetR-Family Regulator and Its Target Gene Product.

    Science.gov (United States)

    Liu, Wenshuai; Zhang, Qinling; Guo, Jia; Chen, Zhi; Li, Jilun; Wen, Ying

    2015-08-01

    Avermectins produced by Streptomyces avermitilis are commercially important anthelmintic agents. The detailed regulatory mechanisms of avermectin biosynthesis remain unclear. Here, we identified SAV3619, a TetR-family transcriptional regulator designated AveT, to be an activator for both avermectin production and morphological differentiation in S. avermitilis. AveT was shown to indirectly stimulate avermectin production by affecting transcription of the cluster-situated activator gene aveR. AveT directly repressed transcription of its own gene (aveT), adjacent gene pepD2 (sav_3620), sav_7490 (designated aveM), and sav_7491 by binding to an 18-bp perfect palindromic sequence (CGAAACGKTKYCGTTTCG, where K is T or G and Y is T or C and where the underlining indicates inverted repeats) within their promoter regions. aveM (which encodes a putative transmembrane efflux protein belonging to the major facilitator superfamily [MFS]), the important target gene of AveT, had a striking negative effect on avermectin production and morphological differentiation. Overexpression of aveT and deletion of aveM in wild-type and industrial strains of S. avermitilis led to clear increases in the levels of avermectin production. In vitro gel-shift assays suggested that C-5-O-B1, the late pathway precursor of avermectin B1, acts as an AveT ligand. Taken together, our findings indicate positive-feedback regulation of aveT expression and avermectin production by a late pathway intermediate and provide the basis for an efficient strategy to increase avermectin production in S. avermitilis by manipulation of AveT and its target gene product, AveM. Copyright © 2015, American Society for Microbiology. All Rights Reserved.

  17. Valores energéticos de subprodutos de origem animal para aves Energy values of animal by-products for poultry

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    Ricardo Vianna Nunes

    2005-08-01

    Full Text Available Foram determinados os valores de energia metabolizável aparente (EMA e energia metabolizável aparente corrigida pelo balanço de nitrogênio (EMAn e os coeficientes de metabolizabilidade aparente (CMA e aparente corrigida pelo balanço de nitrogênio (CMAn de cinco alimentos. Cento e vinte pintos de corte com 21 dias de idade foram distribuídos aleatoriamente em seis tratamentos (uma ração-referência e cinco rações-teste e quatro repetições de cinco aves. Os alimentos avaliados foram: resíduo de incubatório (RI, farinha de penas (FP, farinha de vísceras de aves (FVA e duas farinhas de carne e ossos (FCO 1 e FCO 2. Os alimentos substituíram em 20% a ração-referência. Para determinação dos valores de EMA e EMAn, foi utilizado o método tradicional de coleta total de excretas. Os valores de EMA, expressos em kcal/kg de matéria natural (MN, para os alimentos RI, FP, FVA, FCO 1 e FCO 2, foram de 1.495, 2.774, 2.676, 2.537 e 1.652 e os de EMAn, de 1.301, 2.758, 2.384, 2.307 e 1.488, respectivamente. De acordo com os valores de EMA, EMAn e energia bruta (EB, foram calculados os CMA e o CMAn para os alimentos RI, FP, FVA, FCO 1 e FCO 2, que foram, respectivamente, de 60,09; 55,49; 69,31; 67,71 e 51,14, para o CMA, e de 52,26; 55,18; 61,75; 60,85 e 46,07, para o CMAn.The apparent metabolizable energy (AME, nitrogen corrected apparent metabolizable (AMEn, apparent metabolizability coefficient (AMC and nitrogen corrected apparent metabolizability coefficient (AMCn of five feedstuffs were determined. The feedstuffs investigated were: hatchery by-product meal (HM, feather meal (FM, poultry viscera meal (PVM and two meat and bone meal (MBM 1 and MBM 2 of different origin. The values of AME and AMEn were determined by the total excreta collection method. One hundred and twenty broiler chicks at 21 days old were randomly allotted to six treatments (one basal reference diet and five test diets, with four replications with five birds per

  18. Activities of tabanids (Diptera, Tabanidae attacking domestic duck-Cairina moschata (Linnaeus (Aves, Anatidae, introduced in a forest area in the Central Amazon, Manaus, Brazil

    Directory of Open Access Journals (Sweden)

    Ruth L. M. Ferreira

    2004-06-01

    Full Text Available Presented here are the feeding habits, attack behavior, daily and annual activity of adult of Phorcotabanus cinereus (Wiedeman, 1821, Chrysops laetus (Fabricius, 1805 and Phaeotabanus cajennensis (Fabricius, 1787, while biting a domestic duck, Cairina moschata (Linnaeus, 1758. The last two species were recorded for the first time attacking birds. This study comprehended monthly observations of two consecutive days from April/97 to March/98 between 5:30 a.m. and 6:30 p.m. at the Army Instructional Base ((BI-2/CIGS near Manaus. Annual occurrence of P. cinereus was from July to September, with a daily occurrence between 9:00 a.m. and 5:00 p.m. and highest activity at 12:00 a.m. and 2:00 p.m. C. laetus ocurred from June to October; with a daily occurrence between 8:00 a.m. and 3 p.m. and highest activity at 11:00 and 12:00 a.m. Occurrence of P. cajennensis with one specimen only, was in July between 10:00 and 11:00 a.m.Atividades de tabanídeos (Diptera, Tabanidae atacando pato doméstico Cairina moschata Linnaeus (Aves, Anatidae, introduzido em área de floresta na Amazônia Central, Manaus, Brasil. São apresentados o hábito alimentar, comportamento de ataque, atividade diária e anual de adultos de Phorcotabanus cinereus (Wiedemann, 1821, Chrysops laetus (Fabricius, 1805 e Phaeotabanus cajennensis (Fabricius, 1787 atacando pato doméstico - Cairina moschata (Linnaeus, 1758. As últimas duas últimas espécies são registradas pela primeira vez atacando aves. O estudo compreendeu observações mensais durante dois dias consecutivos de Abril/97 a Março/98, entre 5:30 e 18:30 h, na base de instrução 2 do Centro de Instrução de Guerra na Selva (BI-2/CIGS, Manaus. A ocorrência anual de P. cinereus, foi de julho a setembro, com atividade diária entre 9:00 e 17:00 horas, com maior abundância entre 12:00 e 14:00 horas. C. laetus, ocorreu de junho a outubro, com atividade diária entre 8:00 e 15:00 horas, e maior abundância entre 11:00 e 12

  19. Primer registro de la gaviota sombría (Larus fuscus en el estado de Veracruz, México: información sobre sus patrones de expansión en el Continente Americano

    Directory of Open Access Journals (Sweden)

    José Arturo García-Domínguez

    2015-06-01

    Full Text Available Reportamos el primer registro de la gaviota sombría (Larus fuscus en el estado de Veracruz; se trata de una especie cuya distribución geográfica ha estado expandiéndose, de Europa occidental hacia Norteamérica, desde la primera mitad del siglo XX hasta la fecha. Anida de forma regular en por lo menos dos áreas en el suroeste de Groenlandia, en las que la población reproductiva se ha estimado en más de 700 parejas. Su expansión parece estar ocurriendo también hacia el sur, ya que comenzó a reproducirse en las Islas Canarias a partir de 1995. El primer evento reproductivo confirmado en Norteamérica fue en Maine, EUA, en 2007. En México, el primer registro sucedió en 1979; la especie ha sido reportada en seis estados, con un notable incremento durante los últimos años. Nuestro registro ocurrió el 16 de marzo de 2008. La mayoría de los individuos registrados en el este de Norteamérica posiblemente provengan de poblaciones reproductivas ubicadas en Groenlandia o en Islandia, y quizá estén funcionando como puentes geográficos entre Europa noroccidental y Norteamérica. Con base en sus patrones migratorios y de expansión geográfica, y en el aumento de sus colonias reproductivas, L. f. graellsii es la subespecie que puede ocurrir más comúnmente en Norteamérica. Las características morfológicas del individuo registrado en este trabajo son consistentes con dicho taxón. Si consideramos la regularidad y la cantidad de registros en diferentes regiones del continente, es probable que la presencia de la especie se encuentre subestimada en las costas mexicanas del Golfo de México, siendo en realidad una especie regular, aunque poco abundante.

  20. Modelos matemáticos para estimar as exigências de lisina digestível para aves de corte ISA Label Mathematical models to estimate digestible lysine of ISA Label broilers

    Directory of Open Access Journals (Sweden)

    Jefferson Costa de Siqueira

    2009-09-01

    Full Text Available O objetivo neste estudo foi avaliar diferentes modelos ajustados às respostas de ganho de peso obtidas em experimento com aves da linhagem ISA Label no período de 1 a 28 dias de idade. Foram utilizados 480 pintos de ambos os sexos, distribuídos em delineamento inteiramente casualizado, em arranjo fatorial 4 X 2 (níveis de lisina X sexo, com três repetições, com 20 aves por unidade experimental. Uma ração basal foi formulada para atender às exigências das aves, exceto em lisina. Essa ração foi suplementada com L-lisina HCl em substituição ao ácido L-glutâmico, resultando em rações experimentais isonitrogênicas e isoenergéticas contendo 0,85; 0,97; 1,09 e 1,21% de lisina digestível. As respostas de ganho de peso foram ajustadas de acordo com os níveis de lisina da ração pelos modelos Linear Reponse Plateau (LRP, segmentado de duas inclinações, polinomial quadrático e exponencial. A primeira intersecção da equação quadrática com o platô do LRP também foi utilizado para estimar o nível ótimo. Os níveis de lisina digestível estimados pelos modelos LRP, segmentado e quadrático, foram 0,999; 1,010 e 1,116%, respectivamente. Na combinação do modelo quadrático com o LRP, a estimativa da exigência de lisina digestível foi de 1,041%. O modelo exponencial proporcionou estimativa de 1,066%, considerando 95% da resposta assintótica. Com base nos custos com alimentação, esse mesmo modelo gerou estimativas de 1,000 e 1,030% quando o custo do quilograma de L-lisina HCl foi R$ 8,50 e R$ 6,50, respectivamente. Considerando as limitações de cada um dos modelos propostos, o procedimento para estimar as exigências de lisina digestível pela primeira intersecção da equação quadrática com o platô do LRP foi o mais adequado para melhorar o ganho de peso das aves quando variáveis econômicas não foram consideradas.The objective of this study was to evaluate different models in the adjustment of weight gain (WG

  1. Invasión del estornino pinto Sturnus vulgaris en el Noreste de la provincia de Buenos Aires: análisis de la competencia con aves nativas y potencialidad como transmisor de parásitos

    OpenAIRE

    Ibáñez, Lucía Mariel

    2015-01-01

    El Estornino Pinto (Sturnus vulgaris) es un ave nativa de Europa, Oeste de Asia y norte de África que ha sido introducida en numerosos países y actualmente es considerada una de las 100 especies más invasoras del mundo. En la Argentina fue introducida en la década del 80 y a partir de ese momento se ha observado un aumento importante en la cantidad de ejemplares por bandada y una expansión a distintas provincias del país. Entre noviembre de 2010 y octubre de 2011 se realizó un censo...

  2. Oxidação lipídica do óleo de vísceras de aves para redução de seu conteúdo de energia metabolizável para frangos de corte na fase de crescimento Lipid oxidation decreases metabolizable energy value of dietary poultry fat for growing broilers

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    Aline Mondini Calil Racanicci

    2004-08-01

    Full Text Available Com a finalidade de determinar os teores de energia metabolizável aparente (EMA e de energia metabolizável aparente corrigida para o nitrogênio (EMAn do óleo de vísceras de aves fresco e oxidado, foi conduzido um ensaio metabólico utilizando-se 48 machos AgRoss com 31 dias de idade. As aves foram alojadas em gaiolas metabólicas e o método utilizado foi o de coleta total de excretas. Foi fornecida uma dieta-referência com ou sem substituição de 10% pelo óleo de vísceras de aves fresco ou oxidado, sendo que cada dieta foi oferecida a quatro repetições de quatro aves. O período de coleta foi de quatro dias após três dias de adaptação às dietas e às gaiolas. O óleo de vísceras de aves foi adquirido de um produtor local e armazenado sob congelamento a -18ºC (óleo fresco. O óleo oxidado foi obtido por aquecimento em banho-maria com temperatura entre 80 e 90ºC. Durante o período de aquecimento, a qualidade deste óleo foi controlada por avaliações periódicas da absorbância específica, que indica o acúmulo de compostos de ranço. Os valores de absorbância específica, medidos a 232 e 270 nm, foram, respectivamente, de 4,64 e 0,47 para o óleo fresco e de 18,54 e 3,76 para o óleo oxidado. Os resultados obtidos, expressos na matéria original, para EMA e EMAn foram de 9.240 e 9.150 kcal/kg para o óleo de vísceras fresco e 7.700 e 7.595 kcal/kg para o óleo oxidado, comprovando estatisticamente grande redução no conteúdo de energia metabolizável do óleo decorrente do processo oxidativo.In order to determine the apparent metabolizable energy (AME and N-corrected apparent metabolizable energy (AMEn of fresh and oxidized poultry fat a metabolism assay with 48 AgRoss male broilers from 31 to 34 days of age was conducted. The birds were fed a basal diet or this diet replaced by 10% of fresh or oxidized fat and the total excreta collection method was applied. The birds were housed in metabolic cages and each diet was

  3. Exploring the beliefs underlying attitudes to active voluntary euthanasia in a sample of Australian medical practitioners and nurses: a qualitative analysis.

    Science.gov (United States)

    White, Katherine M; Wise, Susi E; Young, Ross McD; Hyde, Melissa K

    A qualitative study explored beliefs about active voluntary euthanasia (AVE) in a sample (N = 18) of medical practitioners and nurses from Australia, where AVE is not currently legal. Four behaviors relating to AVE emerged during the interviews: requesting euthanasia for oneself, legalizing AVE, administering AVE to patients if it were legalized, and discussing AVE with patients if they request it. Using thematic analysis, interviews were analyzed for beliefs related to advantages and disadvantages of performing these AVE behaviors. Medical practitioners and nurses identified a number of similar benefits for performing the AVE-related behaviors, both for themselves personally and as health professionals. Benefits also included a consideration of the positive impact for patients, their families, and the health care system. Disadvantages across behaviors focused on the potential conflict between those parties involved in the decision making process, as well as conflict between one's own personal and professional values.

  4. Life Cycle and Fecundity Analysis of Lutzomyia shannoni (Dyar (Diptera: Psychodidae

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    Cristina Ferro

    1998-03-01

    Full Text Available The life cycle of Lutzomyia shannoni (Dyar, was described for laboratory conditions with maximum daily temperatures of 27-30°C, minimum daily temperatures of 22-27°C and relative humidity between 87-99 %. Life cycle in each stage was as follows: egg 6-12 days (ave. 8.5 days; first stage larva 5-13 days (ave. 9.6 days; second stage larva 4-13 days (ave. 9.2 days ; third stage larva 5-19 days (ave. 11.8 days; fourth stage larva 7-37 days (ave. 19.9 days; pupa 7-32 days (ave. 15.2 days. The life expectancy of adults ranged from 4 to 15 days (ave. 8.6 days. The entire egg to adult period ranged from 36 to 74 days (ave. 54.6 days. On average, each female oviposited 22.7 eggs; the average egg retention per female was 24.3 eggs.

  5. Pesquisa de Mycoplasma em aves da família Psittacidae mantidas em diferentes cativeiros no Brasil Central

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    Andréa M. Carvalho

    Full Text Available RESUMO: O presente estudo teve como objetivo investigar a presença de Mycoplasma gallisepticum e M. synoviae em diferentes espécies de psitacídeos cativos no Brasil Central. Um total de 300 amostras foram coletadas e corresponderam a 41 espécies de psitacídeos da fauna brasileira, provenientes do CETAS, criadouro comercial e criadouro conservacionista. Quatorze espécies apresentaram amostras positivas para M. gallisepticum destacando a maracanã-verdadeira (Primolius maracana (01/02, 50%, a arara-canindé (Ara ararauna (15/48, 33,3% e a jandaia-verdadeira (Aratinga jandaia (03/10, 30%. Amostras do CETAS obtiveram total de 21,62% (16/74 de amostras positivas, do criadouro comercial 15,7% (19/121 e do criadouro conservacionista 6,66% (7/105. Apenas três espécies foram positivas para M. synoviae sendo essas, a maracanã-pequena (Primolius maracana (1/10 - 10%, arara-macao (Ara macao (1/12, 8,3% e arara-canindé (Ara ararauna (2/48, 4,1%. O CETAS obteve 2,7% (2/74 de amostras positivas totais, enquanto o criadouro conservacionista obteve total de 1,9% (2/105 de amostras. Não ocorreram amostras positivas para M. synoviae no criadouro comercial. Os resultados mostraram um considerável número de amostras positivas para M. gallisepticum em espécies da família Psittacidae, indicando que estes animais podem ser uma fonte de infecção silenciosa para outras aves, uma vez que não apresentaram sintomatologia clínica.

  6. Aplicación de las funciones elípticas de Fourier para la descripción de la forma de los huevos de las aves

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    Dennis Denis Ávila

    2014-12-01

    Full Text Available La forma de los huevos es difícil de cuantificar por la ausencia de fórmulas exactas que describan su geometría. Se describe un algoritmo para la caracterización y comparación de estas formas, basado en la aplicación de las funciones de Fourier. Estas permiten delinear cualquier tipo de contorno cerrado y han sido aplicadas efectivamente al análisis de varias formas biológicas. Se describen los pasos para la toma de datos, su procesamiento y el empleo del programa SHAPE para la obtención de los descriptores, a partir de un estudio de caso. En este se comparan las formas de los huevos de tres especies de aves que representan tres estrategias reproductivas bien diferentes: el Catey (Aratinga euops, la Gaviota Real (Thalasseus maximus y el Totí (Dives atroviolaceus. A partir de 73 fotografías digitales a huevos depositados en colecciones, se calcularon los coeficientes de las funciones para 4, 6, 8, 16 y 20 armónicos, y se redujeron por medio de un Análisis de Componentes Principales. Los puntajes de los componentes que describen hasta el 90 % de la variabilidad fueron empleados en un Análisis de Función Discriminante Lineal para analizar la posibilidad de separar los huevos según sus formas. Con solo cuatro armónicos los primeros cinco componentes explicaron 97% de la varianza en formas. Más armónicos disminuyen la varianza explicada, requiriéndose hasta ocho componentes para explicar la misma cantidad. Los polígonos convexos en el espacio discriminante muestran una clara distinción entre especies sugiriendo la posible discriminación (errores de clasificación entre 7-15%. Los errores en las clasificaciones estuvieron relacionados a diferencias específicas en la forma entre especies. En el estudio de caso, los huevos de A. euops fueron perfectamente clasificados pero en las otras especies los errores fueron entre 5 y 29%, con este número de armónicos y componentes empleados. El algoritmo propuesto a pesar de su

  7. Causes of condemnation of carcasses from poultry in slaughterhouses located in State of Goiás, Brazil Causas de condenação de carcaças de aves em abatedouros localizados no Estado de Goiás, Brasil

    Directory of Open Access Journals (Sweden)

    Ângela Patrícia Santana

    2008-12-01

    Full Text Available The aim of this research was to detect the principal reasons for condemnation of poultry carcasses in two slaughterhouses (A and B; located in the southeastern region of the State of Goiás, Brazil. The data were collected by the federal veterinary inspection services of the Brazilian Ministry of Agriculture between January and April 2007. The principal causes of condemnation observed in both industries were cellulite, contusion/ fractures and bruises, as well as contamination due to gut severance at evisceration. The three main values observed for each of the causes were different between the slaughter houses. In A, cellulite was the main cause of condemnation with 51.20% of all condemnations, followed by 5.67% for contusion/ fractures and bruising and 33.61% for contamination by evisceration. In B, the major cause of condemnation was 28.90% due to fractures/ contusion and bruising, followed by 25.27% for cellulite and 22.50% for contamination. Other causes of condemnation were observed, however in minute quantities in both industries (O objetivo deste trabalho foi observar as principais causas de condenações de aves, em dois abatedouros frigoríficos (A e B, localizados na região Sudeste do Estado de Goiás, Brasil. Os dados foram obtidos junto ao serviço de inspeção veterinária federal do Ministério da Agricultura, entre o período de janeiro e abril de 2007. As três principais causas de condenações observadas em ambas as indústrias foram celulite, contusão/fratura e hematomas e contaminação devido à ruptura de vísceras no momento da evisceração. Entretanto, os valores observados, para cada uma das causas, foram diferentes entre os frigoríficos A e B. Em A, verificou-se que a celulite foi a maior causa de condenação, com 51,20% do total de condenações, seguido por 5,67% de contusão/fratura e hematomas e 33,61% de contaminação na evisceração. Em B, a maior causa foi 28,90% para fraturas/ contusões e hematomas

  8. Biologia reprodutiva e uso de habitat por Cantorchilus Leucotis (Lafresnaye, 1845 (aves, Troglodytidae no Pantanal, Mato Grosso, Brasil

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    Paula Fernanda Albonette de Nóbrega

    2010-01-01

    Full Text Available O conhecimento atual sobre o sucesso reprodutivo e características da história de vida da maioria das espécies de aves neotropicais é deficiente. A qualidade do habitat onde o ninho é construído é um dos fatores que influenciam o sucesso reprodutivo das aves. Este estudo objetivou determinar atributos da história de vida, assim como o padrão de uso de habitat a fim de compreender a dinâmica reprodutiva de Cantorchilus leucotis no Pantanal de Poconé, entre o rio Bento Gomes e Cuiabá, o qual é sujeito a alagamento de janeiro à abril. Cantorchilus leucotis foi registrado pelos métodos de captura com rede de neblina (1.560 horas, observação por censo auditivo (5.600 horas e procura por ninhos (234 horas, durante os anos de 2001, 2002 e 2006. Foram encontrados 87 ninhos de C. leucotis durante as estações reprodutivas dos anos pesquisados, destes, 58 foram abandonados na fase de construção, quatro foram destruídos por intempéries climáticas, e apenas 25 ninhos chegaram à fase de postura de ovos. A porcentagem simples de sucesso reprodutivos foi de 12% (n = 25. A predação foi a maior causa de perda de ninhos ativos (76%. Desses ninhos, 94,7% encontrava-se em fase de ovo e 5,2% em fase de filhote. Dos 87 ninhos encontrados, 52 (59.8% foram encontrados no Cambarazal, 26 ninhos (29.8% no Brejo e nove ninhos (10.4% no Landi. O parasitismo de ninho não foi observado. A espécie foi registrada ao longo de todos os anos de pesquisa, o que lhe conferiu o status de residente. O cambarazal, por se tratar de uma floresta úmida, apresentou locais ideais para confecção do ninho e a disponibilidade de alimento requerido pela espécie.The existing knowledge on the reproductive success and characteristics of the life history of most species of Neotropical birds is scarce. The quality of the habitat where the nest is built is one of the factors that may or may not favor the reproductive success of birds. This study aimed to determine life

  9. The integration of diet, physiology, and ecology of nectar-feeding birds La integración de la dieta, fisiología, y ecología en aves nectarívoras

    Directory of Open Access Journals (Sweden)

    TODD J. McWHORTER

    2000-09-01

    . Muchas especies de aves nectarívoras reducen el consumo de alimento cuando la concentración de azúcar aumenta. Esta respuesta puede ser explicada por dos hipótesis alternativas: compensación alimenticia y restricciones fisiológicas. La primera hipótesis predice que las aves varían el consumo para mantener la ingesta de alimento ajustada a sus gastos energéticos. Por ende, cuando los gastos energéticos aumentan, el consumo debe aumentar. Colibríes vibradores (Selasphorus platycercus y picaflores (Sephanoides sephaniodes fueron alimentados con dietas de contenido energético variable y expuestos a varias temperaturas ambientales. Las aves redujeron el volumen consumido en respuesta a un incremento en la concentración de azúcar. Sin embargo, cuando fueron expuestos a bajas temperaturas, y por lo tanto a mayores demandas de termoregulación, no aumentaron su consumo de energía y perdieron masa corporal. Estos resultados indican la existencia de una limitante fisiología que restringe a los presupuestos energéticos de los colibríes. Limitaciones funcionales (digestivas o periféricas pueden imponer seríos dilemas para los presupuestos de energía de estos pequeños endotérmos y por lo tanto jugar un papel significativo en su distribución, ecología, e historia natural.

  10. Aspectos de la relación entre Thalurania Furcata Colombica (Aves Trochilidae y las flores en que liba, en un bosque subandino Aspectos de la relación entre Thalurania Furcata Colombica (Aves Trochilidae y las flores en que liba, en un bosque subandino

    Directory of Open Access Journals (Sweden)

    Ayala R. Ana Victoria

    1986-06-01

    Full Text Available El mayor nivel de coadaptación ave nectarívora-flor conocido hasta el momento, se ha logrado en los Trochilidae (VAN DER PIJL & DODSON,1969; FEINSINGER et al., 1979 ; tanto, que se ha hablado de flores adaptadas a la polinización por una especie particular de colibrí, y de colibríes que dependen para su alimentación de una sola clase de flor (SNOW & SNOW, 1980.Los factores principales que afectan la selección de alimento por parte de los colibríes están relacionados con: hábitat y estratificación de la vegetación (STILES & VVOLF,1970; FEINSINGER & CoLWELL, 1978, distribución espacial y características de las flores (FEINSINGER & COLYVELL,1978; FEINSINGER et al., 1979, distribución temporal del alimento (WOLF et al., 1976, morfología del pico del ave (FEINSINGER & COLWELL, 1978; STILES, 1978 a; FEINSINGER et al., 1979, tamaño del cuerpo (VVOLF et al., 1976, "disco de sustentación del ala" (wing disc loading y, finalmente, la energía que el colibrí requiere para sustentarse en el aire (EPTING & CASEY, 1973; WOLF et al., 1976. Colombia está incluida en el área central de evolución de los Trochilidae (SNOW & SNOW,- 1980 y posee numerosas especies así como riqueza de hábitats ocupados por ellos. Al igual que trabajos anteriores (SNOW & SNOW, 1980; MURCIA, 1983, el presente aporta al conocimiento de la ecología de los colibríes en este país; especificamente, trata algunos aspectos de la interacción Thalurania furcata colombica-flor proveedora de alimento en un Bosque Subandino. Between April and September 1983 observations were made on the relations between Thalurcnia furcata colombica and flowers in the laguna de Pedro Palo area (Cundinamarca, Colombia. The hummingbird was seen visiting 15 species of plants (beloging to 13 families situated mainly on the edge of forest, among which the following species showed a high degree of ornithophily: Besleria solanoides (Gesneriaceae, Bomarea racemose (Amaryllidaceae

  11. Riqueza e diversidade de aves aquáticas de uma lagoa natural no sudeste do Brasil Species richness and diversity of waterbirds of a natural lake in southeastern Brazil

    Directory of Open Access Journals (Sweden)

    Marcos Rodrigues

    2005-12-01

    Full Text Available O aumento ou decréscimo das populações de aves aquáticas tem sido usado como indicador da qualidade de água e conseqüentemente da qualidade ambiental. O objetivo do presente trabalho foi o de inventariar e monitorar a avifauna aquática da maior lagoa da região do sistema cárstico de Lagoa Santa, região central de Minas Gerais, dentro da 'Área de Proteção Ambiental Carste de Lagoa Santa' (APA LS, a Lagoa do Sumidouro. A Lagoa ocupa uma área de aproximadamente 253 h na época de maior cheia e apresenta um perímetro de cerca de 12.072 m. Durante o período de junho de 1999 a dezembro de 2002 foram estimadas a riqueza e a abundância das aves aquáticas presentes na Lagoa. Foram registradas 27 espécies de aves aquáticas, distribuídas em 12 famílias. Das 27 espécies registradas, 12 foram consideradas residentes ou prováveis residentes e oito visitantes. Sete espécies não apresentaram nenhum padrão distinto de presença sazonal. A família mais bem representada foi Ardeidae com seis espécies perfazendo 23% do total de espécies. Em seguida, a família Anatidae com cinco espécies (15% e Scolopacidae sendo representada por três espécies (11% do total. Uma das espécies Platalea ajaja Linnaeus, 1758 é considerada ameaçada de extinção no Estado de Minas Gerais, enquanto outras duas Mycteria americana Linnaeus, 1758 e Ciconia maguari (Gmelin, 1789 são consideradas raras. Não houve diferença significativa entre a riqueza de espécies estimada para as três estações ('chuvosa', 'seca' e 'transição'. A diversidade de espécies mostrou-se significativamente diferente entre as três estações, sendo a estação chuvosa com a maior diversidade. A presença de espécies ameaçadas de extinção e local de parada de espécies migratórias faz com que a região da APA Carste de Lagoa Santa seja considerada uma área de extrema importância referente aos aspectos biológicos.Increases and decreases of waterfowl population have

  12. Plataformas virtuales en ELE: análisis y evolución del Aula Virtual de Español (AVE, según creencias de su profesorado

    Directory of Open Access Journals (Sweden)

    Martos Eliche, Fermín

    2018-05-01

    Full Text Available El impacto que están produciendo las nuevas Tecnologías de la Información y la Comunicación (TIC en todos los aspectos de nuestra vida y en nuestra sociedad es un hecho innegable. En el área de la educación se ha comenzado a experimentar un gran cambio en las metodologías y en los procesos de aprendizaje de lenguas extranjeras que no deja indiferente a ningún profesional de este campo. Se ha decidido realizar este estudio sobre el uso de las TIC en la enseñanza-aprendizaje de lenguas extranjeras, y más concretamente del español, a través del análisis cualitativo de respuestas abiertas de una serie de profesores-tutores del AVE Global del Instituto Cervantes. Nuestra contribución pretende desvelar la valoración de las cualidades, ventajas y desventajas de las diferentes modalidades de aprendizaje que ofrece esta plataforma actualizada por parte de sus propios docentes.

  13. APROXIMACIÓN A LA CONSERVACIÓN DE LOS BOSQUES AMAZÓNICOS A PARTIR DE LAS CONCEPCIONES DE LAS AVES EN LOS ESTUDIANTES DE GRADO TERCERO DE LA ESCUELA NORMAL SUPERIOR MONSEÑOR MARELINO EDUARDO CAYNES

    Directory of Open Access Journals (Sweden)

    July Milena Trujillo Duarte

    2013-07-01

    las concepciones de las aves en los estudiantes del grado tercero (3.1 J.T de la Escuela Normal Superior sede C, permiten fomentar la conservación de los bosques tropicales en un contexto intercultural, por medio de la investigación acción, en donde se pretende generar un nuevo conocimiento significativo y acorde con las características del contexto, para ello se utilizaron instrumentos como recolecta de información, grabaciones, fotografías, entre otros, que posibilitaron, teniendo en cuenta la riqueza de concepciones, proponer por parte de los estudiantes distintas alternativas que contribuyeron a la conservación: la realización de una campaña informativa sobre las problemáticas presentes en el colegio; la recolección de basuras tanto al interior como al exterior de la institución; además del desarrollo de una obra de teatro, en la cual se logró mostrar las causas de las diferentes acciones socioeconómicas que acaban con la selva amazónica, y perjudi can a la comunidad. Este estudio mostro la importancia de tener en cuenta el contexto en la realización de actividades, permitió además observar las concepciones tanto biológicas y culturales que tiene los estudiantes sobre las aves, al igual que reconocer conocimientos, creencias y prácticas que giran alrededor de estas, las cuales se perderían, sí los bosques tropicales desaparecieran, pues surgen a partir de las relaciones que se han establecido durante generaciones, debido a esto se pudo fomentar su conservación, evidenciándosela relevancia del diálogo entre conocimientos, ya que puede contribuir a transformar la realidad.

  14. Connecting Amazonian, Cerrado, and Atlantic Forest histories: Paraphyly, old divergences, and modern population dynamics in tyrant-manakins (Neopelma/Tyranneutes, Aves: Pipridae).

    Science.gov (United States)

    Capurucho, João Marcos Guimarães; Ashley, Mary V; Ribas, Camila C; Bates, John M

    2018-06-11

    Several biogeographic hypotheses have been proposed to explain connections between Amazonian and Atlantic forest biotas. These hypotheses are related to the timing of the connections and their geographic patterns. We performed a phylogeographic investigation of Tyrant-manakins (Aves: Pipridae, Neopelma/Tyranneutes) which include species inhabiting the Amazon and Atlantic forests, as well as gallery forests of the Cerrado. Using DNA sequence data, we determined phylogenetic relationships, temporal and geographic patterns of diversification, and recent intraspecific population genetic patterns, relative to the history of these biomes. We found Neopelma to be a paraphyletic genus, as N. chrysolophum is sister to Neopelma + Tyranneutes, with an estimated divergence of approximately 18 Myrs BP, within the oldest estimated divergence times of other Amazonian and Atlantic forest avian taxa. Subsequent divergences in the group occurred from Mid Miocene to Early Pliocene and involved mainly the Amazonian species, with an expansion into and subsequent speciation in the Cerrado gallery forests by N. pallescens. We found additional structure within N. chrysocephalum and N. sulphureiventer. Analysis of recent population dynamics in N. chrysocephalum, N. sulphureiventer, and N. pallescens revealed recent demographic fluctuations and restrictions to gene flow related to environmental changes since the last glacial cycle. No genetic structure was detected across the Amazon River in N. pallescens. The tyrant-manakins represent an old historical connection between the Amazon and Atlantic Forest. Copyright © 2018. Published by Elsevier Inc.

  15. Histología del ovario y ciclo reproductivo de Columbina picui (Temminck, 1813 (Aves: Columbidae en Córdoba, Argentina

    Directory of Open Access Journals (Sweden)

    Elsa Inés Altamirano

    2011-07-01

    Full Text Available Con la finalidad de caracterizar el ciclo reproductivo anual de Columbina picui se realizó el análisis estructural y cuantitativo de los ovarios de ejemplares adultos recolectados entre los años 2005—2006 en la Sierra de Macha (Totoral, Córdoba, Argentina. Durante la fase de recrudescencia gonadal (junio a marzo, se determinaron tres valores máximos; el primero en junio, resultado de la ovipostura de las hembras subadultas (plumaje de adultos y vestigios de la Bursa de Fabricius; los restantes valores se registraron uno en septiembre y el otro en enero correspondiendo al de las hembras adultas. La regresión ovárica se inició a partir de la incubación de los huevos y el reposo gonadal de la mayoría de las aves entre abril y mayo. Se identificaron dos tipos atresia folicular: a no bursting, la pared folicular se mantiene intacta, comprende a la lipoidal (ovocitos primordiales y a la lipoglandular (folículos previtelogénicos y vitelogénicos pequeños, ambos procesos se visualizaron durante todo el ciclo reproductivo y b bursting las paredes foliculares se rompen, afecta a los folículos vitelo- génicos menores de 800 μm y sólo fue detectada posterior a la ovipostura. El ciclo reproductivo de C. picui se caracterizo por alta frecuencia de hembras con capacidad de reproducirse durante la mayor parte del año y la prolongada fase de recrudescencia gonadal.

  16. Variación geográfica y ecológica en los parámetros reproductivos de las aves insectívoras forestales del paleártico occidental

    Directory of Open Access Journals (Sweden)

    Sanz, J. J.

    2003-12-01

    Full Text Available The present study shows variation in some breeding parameters (laying date, clutch size in relation to geographical coordinates (latitude, longitude, habitat, elevation and habitat type in insectivorous and hole-nesting passerine of European woodlands. The Great Tit (Parus major was used as a model species. Laying date, at the population level, was not affected by habitat type, and did not show any relationship with longitude and elevation. Laying date showed a significant quadratic relationship with latitude, with the earliest values in central Europe. On the other hand, clutch size at the population level significantly differed among habitat type (large clutches being laid in deciduous forests, showed a positive and negative relationships with longitude and elevation, respectively. Mean clutch size showed a quadratic relationship with latitude, with the highest values at about 55 to 60ºN. In the present study, the main hypotheses proposed to explain these patterns found on the breeding parameters of passerines in the Western Palaearctic are discussed.

    En este trabajo se pretende mostrar como ciertos parámetros reproductores (fecha de puesta, tamaño de puesta varían geográficamente (latitud, longitud, altitud, tipo de hábitat en las especies de aves nidícolas e insectívoras. Para ello, se utiliza como especie modelo al Carbonero Común (Parus major. La fecha de puesta poblacional no difiere entre hábitats, no muestra relación con la longitud y se incrementa con la altitud. La fecha de puesta poblacional muestra una relación cuadrática con la latitud, con los valores más tempranos en latitudes medias. Por otro lado, el tamaño de puesta poblacional difiere entre los hábitats estudiados, siendo mayor en los bosques caducifolios, muestra una relación positiva con la longitud y una relación negativa con la altitud. Además, el tamaño de puesta poblacional muestra una relación cuadrática con la latitud, con

  17. Comparison of arsenic, cadmium, chromium, lead, manganese, mercury and selenium in feathers in bald eagle (Haliaeetus leucocephalus), and comparison with common eider (Somateria mollissima), glaucous-winged gull (Larus glaucescens), pigeon guillemot (Cepphus columba), and tufted puffin (Fratercula cirrhata) from the Aleutian Chain of Alaska

    Science.gov (United States)

    Burger, Joanna; Gochfeld, Michael

    2014-01-01

    There is an abundance of field data for levels of metals from a range of places, but relatively few from the North Pacific Ocean and Bering Sea. In this paper we examine the levels of arsenic, cadmium, chromium, lead, manganese, mercury and selenium in feathers from common eiders (Somateria mollissima), glaucous-winged gulls (Larus glaucescens), pigeon guillemots (Cepphus columba), tufted puffins (Fratercula cirrhata) and bald eagles (Haliaeetus leucocephalus) from the Aleutian Chain of Alaska. Our primary objective was to test the hypothesis that there are no trophic levels relationships for arsenic, cadmium, chromium, lead, manganese, mercury and selenium among these five species of birds breeding in the marine environment of the Aleutians. There were significant interspecific differences in all metal levels. As predicted bald eagles had the highest levels of arsenic, chromium, lead, and manganese, but puffins had the highest levels of selenium, and pigeon guillemot had higher levels of mercury than eagles (although the differences were not significant). Common eiders, at the lowest trophic level had the lowest levels of some metals (chromium, mercury and selenium). However, eiders had higher levels than all other species (except eagles) for arsenic, cadmium, lead, and manganese. Levels of lead were higher in breast than in wing feathers of bald eagles. Except for lead, there were no significant differences in metal levels in feathers of bald eagles nesting on Adak and Amchitka Island; lead was higher on Adak than Amchitka. Eagle chicks tended to have lower levels of manganese than older eagles. PMID:18521716

  18. Insects found in birds' nests from Argentina. Pseudoseisura lophotes Reichenbach, 1853 and Anumbius annumbi (Vieillot, 1817) (Aves: Furnariidae), hosts of Triatoma platensis Neiva, 1913 (Hemiptera: Reduviidae: Triatominae).

    Science.gov (United States)

    Paola, Turienzo

    2014-02-24

    The insect fauna of the nests of Pseudoseisura lophotes (Reichenbach, 1853) (Aves: Furnariidae) from Argentina was investigated. A total of 110 species (68 identified to species, 22 identified to genus, 20 identified to family) in 40 families of 10 orders of insects was found in these nests. Triatoma platensis Neiva, 1913 (Hemiptera: Reduviidae) was found again in nests of P. lophotes, corroborating after 73 years the first observations made by Mazza in 1936. The occurrence of the insects in nests of P. lophotes is compared with the previously known insect fauna in nests of A. annumbi, Furnarius rufus (Furnariidae), and Myiopsitta monachus (Psittacidae). The insect fauna in additional nests of Anumbius annumbi from the same and/or different localities is given, and used in comparisons. The first occurrence of Cuterebridae (Diptera) in birds' nests, their pupae as the overwintering stage, and the second simultaneous infestation by two species of Philornis (Diptera: Muscidae) on the same nestlings are presented. Other simultaneous infestations of different hematophagous arthropods (Hemiptera: Cimidae; Reduviidae: Triatominae, and Acari: Argasidae) are remarked and discussed.

  19. Plastic and Non-plastic Debris Ingestion in Three Gull Species Feeding in an Urban Landfill Environment.

    Science.gov (United States)

    Seif, S; Provencher, J F; Avery-Gomm, S; Daoust, P-Y; Mallory, M L; Smith, P A

    2018-04-01

    Plastic debris is recognized as a widespread, common and problematic environmental pollutant. An important consequence of this pollution is the ingestion of plastic debris by wildlife. Assessing the degree to which different species ingest plastics, and the potential effects of these plastics on their health are important research needs for understanding the impacts of plastic pollution. We examined debris (plastic and other types) ingestion in three sympatric overwintering gull species (Herring gulls Larus smithsonianus, Great Black-backed Gulls Larus marinus, and Iceland Gulls Larus glaucoides) to understand how debris ingestion differs among species, age classes and sexes in gulls. We also assessed how plastic burdens were associated with body condition to investigate how gulls may be affected by debris ingestion. There were no differences among the species, age classes or sexes in the incidence of debris ingestion (plastic or otherwise), the mass or number of debris pieces ingested. We found no correlation between ingested plastics burdens and individual condition. Gulls ingested plastic debris, but also showed high levels of other debris types as well, including metal, glass and building materials, including a metal piece of debris found within an abscess in the stomach. Thus, when the health effects of debris ingestion on gulls, and other species that ingest debris, is of interest, either from a physical or chemical perspective, it may be necessary to consider all debris types and not just plastic burdens as is often currently done for seabirds.

  20. 77 FR 50160 - National Register of Historic Places; Notification of Pending Nominations and Related Actions

    Science.gov (United States)

    2012-08-20

    ... Lincoln County Coram Hotel, The, 302 California Ave., Libby, 12000593 NEW JERSEY Essex County Woman's Club of Upper Montclair, (Clubhouses of New Jersey Women's Clubs), 200 Cooper Ave., Montclair, 12000594... bounded by Louella Ct., West, & S. Wayne Aves. (Radnor Township), Wayne, 12000607 Lebanon County Mt...

  1. Effects of testosterone on growth, plumage pigmentation, and mortality in Black-headed Gull chicks

    NARCIS (Netherlands)

    Ros, A.F.H.

    In the Black-headed Gull Larus ridibundus, sibling chicks defend small territories against conspecifics with testosterone-dependent aggressive behaviour. The energetic requirements for the performance of this behaviour may trade off against the energetic requirements for growth. There are

  2. Diversity of Quill Mites of the Family Syringophilidae (Acari: Prostigmata) Parasitizing Owls (Aves: Strigiformes) With Remarks on the Host-Parasite Relationships.

    Science.gov (United States)

    Skoracki, Maciej; Unsoeld, Markus; Marciniak, Natalia; Sikora, Bozena

    2016-07-01

    The quill mite fauna of the family Syringophilidae (Acari: Prostigmata: Cheyletoidea) associated with owls (Aves: Strigiformes) is reviewed. A new genus is proposed, Neobubophilus Skoracki & Unsoeld gen. nov. It differs from closely related Bubophilus (Bubophilus Philips and Norton, 1978) by the absence of leg setae vsII in the both sexes. In addition, four new species are described: (1) Neobubophilus cunicularius Skoracki & Unsoeld sp. nov. from Athene cunicularia (Molina, 1782) (Strigidae) from Paraguay; (2) Neobubophilus atheneus Skoracki & Unsoeld sp. nov. from Athene noctua (Scopoli, 1769) and Athene brama (Temminck, 1821) (Strigidae), both from India; (3) Bubophilus tytonus Skoracki & Unsoeld sp. nov. from Tyto alba affinis (Blyth, 1862) (Tytonidae) from Cameroon, and (4) Megasyringophilus dalmas Skoracki & Unsoeld sp. nov. from Megascops choliba (Vieillot, 1817) (Strigidae) from Venezuela. The following new host species are given: Bubo bubo (Linnaeus, 1758) (Strigidae) from Nepal for Bubophilus ascalaphus (Philips and Norton 1978) and Strix woodfordii (Smith, 1834) (Strigidae) from Tanzania for Bubophilus aluconis (aluconis Nattress and Skoracki 2009). A key for syringophilid genera and species associated with owls is constructed. The host-parasite relationships of syringophilid mites and owls are discussed. © The Authors 2016. Published by Oxford University Press on behalf of Entomological Society of America. All rights reserved. For Permissions, please email: journals.permissions@oup.com Version of Record, first published online May 24, 2016 with fixed content and layout in compliance with Art. 8.1.3.2 ICZN.

  3. Water depth selection during foraging and efficiency in prey capture by the egrets Casmerodius albus and Egretta thula (Aves, Ardeidae in an urban lagoon in Rio de Janeiro State, Brazil Seleção de profundidade da água durante o forrageamento e eficiência na captura de presas por Casmerodius albus e Egretta thula (Aves, Ardeidae em uma lagoa urbana no Estado do Rio de Janeiro, Brasil

    Directory of Open Access Journals (Sweden)

    Aline B. Moreno

    2005-03-01

    Full Text Available This study aimed to evaluate the water depth selection during foraging, the efficiency in prey capture, and the food items captured by Casmerodius albus (Linnaeus, 1758 and Egretta thula (Molina, 1782. The work was conducted at an urban lagoon, Lagoa Rodrigo de Freitas, Rio de Janeiro. Four transects were made each month (two in the morning and two in the afternoon for six months. When the birds were detected foraging, the water depth and the types of prey captured were recorded. There was no significant relationship between the foraging efficiencies of the two species. However, they differed in relation to the water depth when foraging, and also in the food items captured. Casmerodius albus captured mainly fishes while Egretta thula captured mainly invertebrates. The results suggest that the differences in water depth when foraging and the food items captured allow a differential use of the food resources available by C. albus and E. thula at Lagoa Rodrigo de Freitas.Este estudo teve o objetivo de avaliar a seleção de profundidade durante o forrageamento, a eficiência na captura de presas e os itens alimentares capturados por Casmerodius albus (Linnaeus, 1758 e Egretta thula (Molina, 1782. O trabalho foi realizado em uma lagoa urbana, Lagoa Rodrigo de Freitas. Durante seis meses foram realizadas quatro transecções (duas de manhã e duas à tarde. Quando as aves foram avistadas forrageando, foram registradas a profundidade da água e o tipo de presa capturada. Não foi encontrada relação estatisticamente significativa entre a eficiência de forrageamento para as duas espécies de aves. Entretanto, as espécies diferiram significativamente em relação à profundidade da água durante o forrageamento e também em relação aos itens alimentares capturados. Casmerodius albus capturou principalmente peixes, enquanto E. thula capturou principalmente invertebrados. Os resultados sugerem que diferenças na profundidade da água durante o

  4. 77 FR 58578 - Certain Sintered Rare Earth Magnets, Methods of Making Same and Products Containing Same...

    Science.gov (United States)

    2012-09-21

    ... Electronics, LLC, 2220 Colorado Ave., Santa Monica, CA 90404 Monster Cable Products, Inc., 455 Valley Dr... Electronics, Inc., 14881 Evergreen Ave., Clearwater, FL 33762 TELEX Communications, Inc., 12000 Portland Ave... Technology, Inc., 5835 Shugart Lane, Traverse City, MI 49684 Nexteer Automotive Corp., 3900 East Holland Rd...

  5. Digenean parasites of Ciconiiform birds from Argentina Digéneos parásitos de aves Ciconiiformes de Argentina

    Directory of Open Access Journals (Sweden)

    Fabiana B. Drago

    2011-03-01

    Full Text Available The helminthological survey of 13 specimens of 5 ciconiiform species revealed the presence of 10 species of intestinal digeneans: Sphincterodiplostomum musculosum Dubois, 1936 in Tigrisoma lineatum and Ardea alba; Tylodelphys elongata (Lutz, 1928 in T. lineatum; Apharyngostrigea ardearum (Lutz, 1928 and Dolichorchis lacombeensis Lunaschi and Drago, 2006 in Ardea cocoi and Ardea alba; Posthodiplostomum nanum Dubois, 1937 in A. alba and T. lineatum; Ascocotyle diminuta (Stunkard and Haviland, 1924 in A. alba; Petasiger sp.1 in A. cocoi and Paryphostomum segregatum Dietz, 1909, Strigea vaginata (Brandes, 1888 and Petasiger sp. 2 in Coragyps atratus. Syrigma sibilatrix was free of digeneans. The reports of A. ardearum, T. elongata, S. musculosum and D. lacombeensis represent new host records; the other reports are new geographical records. Moreover, the specimens described as Apharyngostrigea brasiliana Szidat, 1929 by Labriola and Suriano (1998 were analyzed and transferred to A. ardearum.El estudio parasitológico de 13 ejemplares pertenecientes a 5 especies de aves Ciconiiformes reveló la presencia de 10 especies de digéneos intestinales: Sphincterodiplostomum musculosum Dubois, 1936 en Tigrisoma lineatum y Ardea alba; Tylodelphys elongata (Lutz, 1928 en T. lineatum; Apharyngostrigea ardearum (Lutz, 1928 y Dolichorchis lacombeensis Lunaschi y Drago, 2006 en Ardea cocoi y A. alba; Posthodiplostomum nanum Dubois, 1937 en A. alba y T. lineatum; Ascocotyle diminuta (Stunkard y Haviland, 1924 en A. alba; Petasiger sp.1 en A. cocoi y Paryphostomum segregatum Dietz, 1909, Strigea vaginata (Brandes, 1888 y Petasiger sp. 2 en Coragyps atratus. Syrigma sibilatrix no se encontró parasitada por digéneos. El presente estudio aporta nuevos registros de hospedadores para A. ardearum, T. elongata, S. musculosum y D. lacombeensis y nuevos registros geográficos para las restantes especies. Además, los organismos descritos como Apharyngostrigea brasiliana

  6. Mixed bird flocks: patterns of activity and species composition in a region of the Central Andes of Colombia Bandadas mixtas de aves: patrones de actividad y composición de especies en una región de la Cordillera Central de los Andes de Colombia

    Directory of Open Access Journals (Sweden)

    Enrique Arbeláez-Cortés

    2011-06-01

    Full Text Available Mixed bird flocks are groups of individuals from different species that travel and forage together. Such groups are common in several bird communities around the world. We present species composition and activity patterns of mixed bird flocks in a region of the Central Andes of Colombia. We compared the number of species per flock, as well as the number of flocks among 3 different habitats. We tested hypotheses concerning the flocks daily activity and the co-occurrences of species within them. We recorded 75 species, and the species number per flock varied from 4 to 21. Our data suggest that habitat affects the number of flocks but not their species number, and that the activity of flocks is similar throughout the day. In addition, the association of birds in flocks is affected by interspecific facilitation, with some species co-occurrences found more times than expected by chance. We hypothesize that some tanager species could have a role in flock cohesion. We witnessed 2 predator attacks upon flocks, a number of agonistic interactions among flock members, and squirrels following bird flocks. Our results meet some general patterns described for mixed bird flocks.Las bandadas mixtas de aves son grupos de individuos de diferentes especies que viajan y forrajean juntos, y son comunes en varias comunidades de aves alrededor del mundo. Presentamos la composición de especies y los patrones de actividad de las bandadas mixtas de aves en una región de la Cordillera Central de los Andes Colombianos. Comparamos el número de especies por bandada y el número de bandadas en 3 hábitats distintos. Evaluamos hipótesis relacionadas con la actividad de las bandadas durante el día y la presencia simultánea de especies en estos grupos. Observamos 75 especies, y el número de especies por bandada varió entre 4 y 21. Nuestros datos indican que el hábitat parece afectar el número de bandadas pero no su número de especies y que la actividad de las bandadas

  7. A defective mutant of Salmonella enterica Serovar Gallinarum in cobalamin biosynthesis is avirulent in chickens Mutante de Salmonella enterica serovar Gallinarum duplo defectivo na biossíntese de cobalamina é avirulento para aves

    Directory of Open Access Journals (Sweden)

    Jacqueline Boldrin de Paiva

    2009-09-01

    Full Text Available Salmonella enterica serovar Gallinarum (SG is a fowl typhoid agent in chickens and is a severe disease with worldwide economic impact as its mortality may reach up to 80%. It is one of a small group of serovars that typically produces typhoid-like infections in a narrow range of host species and which therefore represents a good model for human typhoid. The survival mechanisms are not considered to be virulent mechanisms but are essential for the life of the bacterium. Mutants of Salmonella Gallinarum containing defective genes, related to cobalamin biosynthesis and which Salmonella spp. has to be produced to survive when it is in an anaerobic environment, were produced in this study. Salmonella Gallinarum is an intracellular parasite. Therefore, this study could provide information about whether vitamin B12 biosynthesis might be essential to its survival in the host. The results showed that the singular deletion in cbiA or cobS genes did not interfere in the life of Salmonella Gallinarum in the host, perhaps because single deletion is not enough to impede vitamin B12 biosynthesis. It was noticed that diluted SG mutants with single deletion produced higher mortality than the wild strain of SG. When double mutation was carried out, the Salmonella Gallinarum mutant was unable to provoke mortality in susceptible chickens. This work showed that B12 biosynthesis is a very important step in the metabolism of Salmonella Gallinarum during the infection of the chickens. Further research on bacterium physiology should be carried out to elucidate the events described in this research and to assess the mutant as a vaccine strain.Salmonella enterica serovar Gallinarum (SG é o agente do tifo aviário, doença severa que provoca mortalidade em até 80% do plantel de aves. SG encontra-se entre os poucos sorotipos de Salmonella que são agentes etiológicos de enfermidade específica, à semelhança de Salmonella Typhi em seres humanos podendo, portanto, servir

  8. Produção e qualidade dos ovos de poedeiras comerciais submetidas a programas de muda forçada

    OpenAIRE

    Dalanezi, José Antonio [UNESP

    2007-01-01

    O objetivo deste trabalho foi de avaliar os efeitos do jejum, milho, farelo de trigo e ração de muda no processo de muda forçada em poedeiras comerciais com 73 semanas de idade. O trabalho foi conduzido na UNESP - FMVZ - no setor de avicultura, Câmpus de Botucatu. As aves foram alojadas em gaiolas com dois compartimentos internos, com quatro aves por compartimento, totalizando oito aves por gaiola. Foram utilizadas 512 poedeiras comerciais da linhagem Shaver. Durante o período de muda, as ave...

  9. Résultats de recherche | Page 428 | CRDI - Centre de recherches ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    Preserving the Dnipro River : Harmony, History, and Rehabilitation. Le Dniepr est le deuxième plus long fleuve d'Europe et coule au cœur de la Russie, du Bélarus et de l'Ukraine. Publication Date. 1 avril 2005. Livres ...

  10. The most common diet results in low reproduction in a generalist seabird

    NARCIS (Netherlands)

    van Donk, S.; Camphuysen, K.C.J.; Shamoun-Baranes, J.; van der Meer, J.

    2017-01-01

    Dietary specialization has been described across a wide range of taxa in the animal kingdom. Fitness consequences are, however, not well documented. We examined the reproductive consequences of different dietary specializations in the herring gull Larus argentatus, an omnivorous seabird, using an

  11. Experience modulates both aromatase activity and the sensitivity of agonistic behaviour to testosterone in black-headed gulls

    NARCIS (Netherlands)

    Ros, Albert F. H.; Franco, Aldina M. A.; Groothuis, Ton G. G.

    2009-01-01

    In young black-headed gulls (Larus ridibundus), exposure to testosterone increases the sensitivity of agonistic behaviour to a subsequent exposure to this hormone. The aim of this paper is twofold: to analyze whether social experience, gained during testosterone exposure, mediates this increase in

  12. Protective effects of methanolic extract of Adhatoda vasica Nees leaf in collagen-induced arthritis by modulation of synovial toll-like receptor-2 expression and release of pro-inflammatory mediators

    Directory of Open Access Journals (Sweden)

    Rana Adhikary

    2016-03-01

    Full Text Available RA associated with oxidative stress and chronic inflammation has been a major health problem among the population worldwide. In this study protective effect of methanolic extract of Adhatoda vasica leaf (AVE was evaluated on Collagen-induced arthritis in male Swiss albino mice. Post oral administration of AVE at 50, 100 and 200 mg/kg body weight doses decreased the arthritic index and footpad swelling. AVE administration diminished pro-inflammatory cytokines in serum and synovial tissues. Reduced chemokines and neutrophil infiltration in synovial tissues after AVE administration dictated its protective effect against RA. Decreased LPO content and SOD activity along with concomitant rise in GSH and CAT activities from liver, spleen and synovial tissues indicated regulation of oxidative stress by AVE. In addition decreased CRP in serum along with suppressed TLR-2 expression in CIA mice after AVE treatment was also observed. Protective effect of AVE in RA is further supported from histopathological studies which showed improvement during bone damage. In conclusion this study demonstrated A. vasica is capable of regulating oxidative stress during CIA and therefore down regulated local and systemic release of pro-inflammatory mediators, which might be linked to mechanism of decreasing synovial TLR-2 expression via downregulating release of its regular endogenous ligands like CRP.

  13. Desenvolvimento folicular e desempenho produtivo no início do ciclo de postura em duas raças de poedeiras

    Directory of Open Access Journals (Sweden)

    Priscila Becker Ferreira

    2014-03-01

    Full Text Available Avaliaram-se as características reprodutivas de duas raças puras de poedeiras semipesadas. Foram utilizadas 800 fêmeas, 400 da raça Plymouth Rock White (PRW e 400 da raça Plymouth Rock Barred (PRB no período compreendido entre a 16ª e a 24ª semanas de idade, quando todas as aves tiveram o mesmo manejo e receberam água e ração ad libitum. Semanalmente, foram mensurados os parâmetros peso corporal, consumo alimentar, taxa de postura, conversão alimentar, peso dos ovos, peso de oviduto e número de folículos ovarianos. Foi utilizado um delineamento inteiramente casualizado (DIC com dois tratamentos (PRW e PRB e cinco repetições de oitenta aves cada, sendo que os dados foram submetidos à análise de variância e as médias comparadas pelo teste "T" de Student a 5% de significância. Observou-se que na 24ª semana de idade as aves da raça PRW apresentaram uma maior taxa de postura (P=0,006 e melhor conversão alimentar (P=0,020, comparado às aves da raça PRB. As aves PRB apresentaram maior peso corporal, comparado ao peso das PRW, entretanto, o peso do oviduto em relação ao peso corporal na 24ª semana e o número de folículos grandes amarelos na 20ª semana de idade foram maiores nas aves da raça PRW, comparado com as aves da raça PRB (P=0,029. Aves poedeiras da raça PRW são mais eficientes nos parâmetros produtivos e apresentam o desenvolvimento do aparelho reprodutivo mais precoce em relação às aves da PRB.

  14. Regional trends amongst Danish specialist farmland breeding birds

    DEFF Research Database (Denmark)

    Heldbjerg, Henning; Fox, Anthony David

    2016-01-01

    declining in all regions. Only Mew Gull Larus canus showed consistent increases in all regions, Western Marsh Harrier Circus aeruginosus and Common Whitethroat Sylvia communis showed increases in the East and West while Barn Swallow Hirundo rustica showed little change in abundance anywhere during...

  15. The relationship between carbon stable isotope ratios of hatchling down and egg yolk in Black-headed Gulls

    NARCIS (Netherlands)

    Klaassen, M.R.J.; Baarspul, T.; Dekkers, T.; Van Tienen, P.

    2004-01-01

    We reconstructed the nutrient source for egg synthesis by sampling Black-headed Gull (Larus ridibundus) eggs for yolk, analyzing their carbon stable isotope ratio, and comparing that to hatchling down. Most of the variation in carbon stable isotope ratio was explained by differences between nests,

  16. Prevalência de Transtorno Mental e Comportamental em Trabalhadores de Indústrias de Abate de Suínos e Aves no Sul do Brasil

    Directory of Open Access Journals (Sweden)

    Romilda Guilland

    2017-02-01

    Full Text Available No Brasil, no Paraná, a produção de alimentos de origem animal é uma das atividades econômicas que mais contrata força de trabalho, mas, também, é uma das que mais contribui para a ocorrência de adoecimentos, porém ainda se tem pouco conhecimento sobre os transtornos mentais. Trata-se de uma pesquisa epidemiológica de caráter descritivo acerca de transtornos mentais e comportamentais em trabalhadores de indústrias de abate de suínos, aves e outros pequenos animais do estado do Paraná. Foram utilizados dados secundários da Previdência Social brasileira, de 2008 a 2014. Os resultados apontaram que a maioria dos trabalhadores incapacitados têm entre 28 e 38 anos, são mulheres e apresentam prevalência de depressão. Houve prevalência do benefício auxílio-doença previdenciário em detrimento do auxílio-doença por acidente de trabalho, que possui nexo com o trabalho. Além disso, redução anual dos benefícios acidentários concedidos. Conclui-se que há dificuldade dos trabalhadores em obter o reconhecimento da doença como decorrente do trabalho, especialmente quando caracterizadas como transtornos mentais.

  17. Frugivoria por aves em um mosaico de Floresta Estacional Semidecidual e reflorestamento misto em Rio Claro, São Paulo, Brasil Frugivory by birds in a mosaic of seasonal semideciduous forest and a mixed reforested area in Rio Claro, Sao Paulo, Brazil

    Directory of Open Access Journals (Sweden)

    Samira Athiê

    2012-03-01

    Full Text Available Visando subsidiar futuros projetos de recuperação florestal com base nas interações animal-planta, foram avaliadas as espécies ornitocóricas e o consumo de frutos por aves em um mosaico de Floresta Estacional Semidecidual e um reflorestamento misto, em Rio Claro, São Paulo. Através do monitoramento da frutificação e avaliação dos eventos de frugivoria em sessões focais e ad libitum, foram registradas 31 espécies ornitocóricas fornecendo frutos para 38 espécies de aves consumidoras. No reflorestamento misto foram observadas 90,3% (n=28 das espécies ornitocóricas frutificando ao longo de todo ano, enquanto no fragmento florestal, somente 51,6% (n=16 delas foram registradas, com maiores variações temporais na oferta de frutos; 65,2% (n=1027 dos frutos foram consumidos no reflorestamento misto e 34,8% (n=547 no fragmento florestal. Tais resultados podem estar relacionados ao menor tamanho do fragmento de vegetação nativa, o que, proporcionalmente, poderia determinar uma menor riqueza de espécies vegetais no mesmo e/ou ao fato de a dispersão abiótica tender a predominar nos locais fragmentados e perturbados. O reflorestamento misto, embora apresente algumas espécies vegetais exóticas, está sendo ecologicamente mais funcional para a avifauna e, devido à proximidade com o fragmento, parece estar contribuindo para a manutenção das comunidades de aves residentes e visitantes deste último através dos recursos alimentares oferecidos.To support future forest recovery projects based on plant-animal interactions, this work aimed to evaluate the ornithochoric species and fruit consumption by birds in both a mosaic of seasonal semideciduous forest and a mixed reforested area in Rio Claro, Sao Paulo, Brazil. By monitoring and evaluating fruiting and frugivory events in focal and ad libitum sessions, 31 ornithochoric species were found that provide fruits to 38 species of frugivorous birds. In the mixed reforested area, 90.3% (n

  18. Composición de ácidos grasos y peroxidación lipídica de mitocondrias y microsomas aislados de hígado, corazón y cerebro de aves de diferentes especies: relación con el tamaño corporal

    OpenAIRE

    Gutiérrez, Ana María

    2015-01-01

    Las aves pueden vivir dos veces más tiempo y poseen tasas metabólicas específicas 2.3 veces mayores que las de los mamíferos de similar tamaño corporal. La temperatura del cuerpo está 3ºC por encima de la que presentan los mamíferos y los niveles de glucosa en sangre son 2 a 4 veces más altos. Los ácidos grasos poliinsaturados de cadena larga como el ácido araquidónico (C20:4n6) y el ácido docosahexenoico (C22:6n3) juegan un papel importante en una variedad de funciones biológicas. Los ácidos...

  19. Uso estructural del hábitat por una comunidad de aves en bosques de rebollo (Quercus pyrenaica, Willd

    Directory of Open Access Journals (Sweden)

    Calvo, Jesús M.

    1994-12-01

    Full Text Available The influence on the bird community of 9 structural zones in two plots of Iberian oak-woodland (Quercus pyrenaica with differences in vegetation structure was studied. Bird utilization of vegetation was measured by taking samples of each observed individual every 30 seconds, specifying the zone used as a food resource. Existence of a preferential selection in tree top and shrub was verified in the "Monte" plot, whereas tree top and ground in "Dehesa" plot were the preferential zones. The incidence of the seasons in the utilization of some zones (tree top, shrub and air was proven, while others zones (ground and trunks maintained an uniform level of utilization all year round. Shrub is used more in Iberian-oak forest than in other evergreen Quercus woods, while the opposite happens for the ground. The hardest period for birds in the study forest in the winter, while in other evergreen Mediterranean woods It is the summer.

    Depto. de Biología Animal, Facultad de Biología, Universidad de Salamanca, 37071- Salamanca, España [es] Se estudia la influencia que ejercen sobre la comunidad de aves, las 9 zonas estructurales definidas dentro de dos parcelas de rebollar que presentan diferente estructura de su vegetación. La utilización del medio se midió observando cada individuo a intervalos de 30 segundos, anotando la zona sobre la que se encontraba buscando alimento. Se comprueba la selección preferencial de la copa de los árboles y del matorral en la parcela "Monte" y de la copa y el suelo en la parcela "Dehesa". Se pone de manifiesto la incidencia de la estacionalidad sobre la selección de algunos sustratos (copa de árboles, matorral y aire, mientras que otros mantienen una utilización más uniforme durante todo el año (suelo y troncos. El matorral es más ampliamente empleado en el rebollar que en bosques de Quercus perennes ibéricos, mientras que sucede lo contrario respecto al empleo del suelo. El invierno

  20. Phenology, nest-site selection and breeding success of a North ...

    African Journals Online (AJOL)

    Gulls are good biological models to investigate anthropogenic changes affecting the environment. We studied the breeding ecology of a monospecific colony of yellow-legged gulls, Larus michahellis on the Algerian island of Srigina, during three consecutive years (2009–2011) and attempted to identify factors influencing ...

  1. Lead and cadmium in wild birds in southeastern Spain

    Energy Technology Data Exchange (ETDEWEB)

    Garcia-Fernandez, A.J.; Sanchez-Garcia, J.A.; Luna, A. [Univ. of Murcia (Spain); Jimenez-Montalban, P. [Regional Environmental Agency, Murcia (Spain). Centro de Recuperacion de Fauna Silvestre El Valle

    1995-12-01

    The main purpose of this study was to monitor exposure to lead and cadmium in wild birds in Murcia, a southeastern region of Spain on the Mediterranean coast. This region lies on one of the African-European flyways. Samples of liver, kidney, brain, bone, and whole blood from several species of wild birds were obtained during 1993. The authors found a clear relationship between cadmium and lead concentrations in birds and their feedings habits. Vultures (Gyps fulvus) had the highest concentrations of lead (mean 40 {micro}g/dl in blood), and seagulls (Larus argentatus and Larus ridibundus) the highest concentrations of cadmium (mean 4.43 {micro}g/g in kidney). Insectivores had high concentrations of both metals, and diurnal and nocturnal raptors showed the lowest tissue concentrations. The findings that tissue and blood concentrations were generally not elevated suggests environmental (rather than acute) exposure. Birds from more industrialized areas of the region studied here had higher concentrations of both lead and cadmium.

  2. Surveillance of arbovirus infections in the atlantic forest region, State of São Paulo, Brazil: I. detection of hemagglutination-inhibition antibodies in wild birds between 1978 and 1990 Vigilância de infecções por arbovírus na Região da Mata Atlântica, Estado de São Paulo, Brasil.: I. Detecção de anticorpos inibidores de hemaglutinação em aves silvestres entre 1978 e 1990

    Directory of Open Access Journals (Sweden)

    Ivani B. Ferreira

    1994-06-01

    Full Text Available We report data related to arbovirus antibodies detected in wild birds periodically captured from January 1978 to December 1990 in the counties of Salesópolis (Casa Grande Station, Itapetininga and Ribeira Valley, considering the different capture environments. Plasmas were examined using hemagglutination-inhibition (HI tests. Only monotypic reactions were considered, except for two heterotypic reactions in which a significant difference in titer was observed for a determined virus of the same antigenic group. Among a total of 39,911 birds, 269 birds (0.7% belonging to 66 species and 22 families were found to have a monotypic reaction for Eastern equine encephalitis (EEE, Venezuelan equine encephalitis (VEE, Western equine encephalitis (WEE, Ilheus (ILH, Rocio (ROC, St. Louis encephalitis (SLE, SP An 71686, or Caraparu (CAR viruses. Analysis of the data provided information of epidemiologic interest with respect to these agents. Birds with positive serology were distributed among different habitats, with a predominance of unforested habitats. The greatest diversity of positive reactions was observed among species which concentrate in culture fields.Apresentam-se os resultados referentes a anticorpos para arbovírus em aves silvestres capturadas, periodicamente, de janeiro de 1978 a dezembro de 1990, nos municípios de Salesópolis (Estação de Casa Grande; Itapetininga e municípios do Vale do Ribeira, considerando-se os diferentes ambientes de captura. Plasmas foram examinados, por testes de Inibição de Hemaglutinação (IH. Considerou-se apenas as reações monotípicas, com exceção de duas reações heterotípicas, onde ocorreu uma diferença de título significativa para um determinado vírus de um mesmo grupo antigênico. Em um total de 39.911 aves, foram encontradas 269 aves pertencentes a 66 espécies e 22 famílias, com reação monotípica para os vírus Encefalite Equina do Leste (EEE, Encefalite Equina Venezuelana (VEE

  3. Enteric virus with segmented double-stranded RNA genome in broiler chicken: Rotavirus, Reovirus and Picobirnavirus / Virus entéricos RNA fita dupla, segmentado, em aves: Rotavírus, Reovírus e Picobirnavírus

    Directory of Open Access Journals (Sweden)

    Amauri Alcindo Alfieri

    2000-04-01

    Full Text Available Enteric infections account for considerable economic losses to the poultry industry through weight loss, low food conversion, direct and indirect expenses with treatments and increased death rates. Poultry intestinal pathologies, either with local or general manifestations, can be caused by bacteria, protozoa or virus, acting alone or in association. Regarding viral etiology, several genera have been isolated from poultry with enteric disease. However, two genera from the Reoviridae family, the rotavirus and the reovirus are found more frequently in broiler chicken and/or laying hen feces. These viruses have been associated with clinical signs of enteritis in most epidemiological research. This revision aims to present some topics on the etiological agents (rotavirus, reovirus and picobirnavirus, the clinical disease and the diagnostic and control methods and prophylaxis of the infection.As infecções entéricas são responsáveis por consideráveis prejuízos econômicos à indústria avícola representados por perda de peso, baixa conversão alimentar, custos diretos e indiretos com tratamentos e por aumento na taxa de mortalidade. As patologias intestinais em aves, tanto com manifestação local quanto geral, podem ser determinadas por bactérias, protozoários e vírus, atuando de forma isolada ou em associação. Com relação a etiologia virai, vários gêneros têm sido isolados a partir de aves com enteropatias. Porém, dois gêneros na família Reoviridae, o rotavírus e o reovírus são encontrados com maior freqüência em fezes de frangos de corte e/ou galinhas poedeiras. Na maioria dos inquéritos epidemiológicos esses vírus estão associados a sinais clínicos de enterite. Esta revisão tem por objetivo apresentar alguns tópicos relativos aos agentes etiológicos (Rotavírus, Reovírus e Picobirnavírus, à doença clínica e aos métodos de diagnóstico, controle e profilaxia da infecção.

  4. Ticks (Acari: Ixodidae as ectoparasites of Brazilian wild birds and their association with rickettsial diseases

    Directory of Open Access Journals (Sweden)

    Maria Ogrzewalska

    2016-04-01

    Full Text Available Os carrapatos (Acari: Ixodoidea são ectoparasitas obrigatórias de uma variedade de hospedeiros vertebrados e têm um papel importante na ecologia e transmissão de diversos patógenos causadores de doenças em humanos e animais no mundo todo. No Brasil existem 68 espécies de carrapatos e pelo menos 23 espécies são encontradas parasitando aves silvestres. Esse número tem crescido com o advento de novos estudos ressaltando o papel das aves nos ciclos de vida desses artrópodes. Na América do Sul alguns desses carrapatos estão envolvidos na epidemiologia de doenças graves para o ser humano, como a febre maculosa, causada por bactérias do gênero Rickettsia (Rickettsiales: Rickettsiaceae. O alvo desse artigo é apresentar o estado atual de conhecimento sobre a fauna de carrapatos encontrados em aves no Brasil e as associações estabelecidas com as riquetsioses. A literatura disponível sobre carrapatos em aves e ocorrência de riquétsias foi revisada e pôde ser concluído que aves têm um papel importante nos ciclos de vida de várias espécies de carrapatos, sendo especialmente importantes para os estágios imaturos (larvas e ninfas. A maior parte do conhecimento sabrecai na fauna de carrapatos de aves dos biomas Mata Atlântica e Cerrado no sudeste e centro-oeste do Brasil. Já o conhecimento sobre o parasitismo por carrapatos em aves dos outros biomas: Amazônia, Caatinga, Pantanal e Pampas é muito limitado. Além disso, não há estudos sobre o papel de aves como disseminadores de carrapatos entre áreas e também o papel de aves no ciclo de Rickettsia não está totalmente esclarecido.

  5. Composição e dinâmica da avifauna da usina eólica da praia da Pedra do Sal, Delta do Parnaíba, Piauí, Brasil

    Directory of Open Access Journals (Sweden)

    Anderson Guzzi

    2015-06-01

    Full Text Available RESUMO O impacto dos parques eólicos sobre as aves é um dos temas menos estudados no Brasil, o que contrasta com a importância dessa nova fonte de energia renovável. O presente estudo buscou caracterizar a composição e dinâmica ecológica das espécies de aves residentes e migratórias presentes na área da Usina Eólica da Pedra do Sal, em Parnaíba, Estado do Piauí. O estudo foi desenvolvido por meio de trinta e três amostragens distribuídas em dois ciclos sazonais completos (setembro de 2011 a agosto de 2013, através do método do ponto de escuta, dispostos na base de cada um dos aerogeradores. Foram registrados 6.843 contatos de aves pertencentes a 67 espécies distribuídas em 22 famílias e 13 ordens, e a espécie com maior número de contatos foi a batuíra-de-coleira (Charadrius collaris. As categorias tróficas predominantes foram as das aves insetívoras, representadas por 18 espécies, seguidas pelas aves que se alimentam de invertebrados aquáticos (17 espécies. A maioria das aves registradas é de ambiente aquático. Durante o desenvolvimento desse estudo não foram registradas colisões entre as aves e os aerogeradores.

  6. AVES: FRINGILLIDAE

    African Journals Online (AJOL)

    bully seedeater (S. suJphllTlltw), at 31 study areas in the southwestern Cape during January 1974-. October 1976. The data used here were obtained incidentally during a study (Milewski 1976) of the feeding ecology and habitat of the protea seedeater, a rare and threatened species whose biology is virtually unknown ...

  7. AVES; SULIDAE

    African Journals Online (AJOL)

    mass of food needed to hand-rear a captive Cape gannet chick is given by ..... consumed more food during the growth period than those reared naturally and attained a ... grow as fast as wild birds and were lighter at fledging (Kushlan I 977a).

  8. Ave Maria

    DEFF Research Database (Denmark)

    Imer, Lisbeth

    2012-01-01

    På nationalmuseerne i Grønland og i Danmark ligger en guldgrube af indskrifter, som giver os en enestående mulighed for at beskrive skriftkulturen hos landbefolkningen i middelalderen. Fra nordbotidens Grønland (ca. 985-1450) stammer omkring 150 genstande med runer og latinske bogstaver, som vise...

  9. Avian influenza: Eco-epidemiological aspects of the virus in its natural hosts, the migratory waterfowls Influenza aviar: Aspectos ecoepidemiológicos del virus en su hospedero natural, las aves acuáticas migratorias

    Directory of Open Access Journals (Sweden)

    MARICELA MONTALVO-CORRAL

    2010-12-01

    Full Text Available Avian influenza viruses produce mainly respiratory and intestinal diseases. Their relevance in the generation of pandemic strains has led to a large amount of research to understand their distribution in nature, as well as the relations that become established for the effective transmission among different hosts. Waterfowl have been recognized as their natural reservoir and they play an important role in the propagation and generation of the diversity of these viruses. The emergence of new influenza viruses with pandemic potential among the human population (H5N1 of avian origin or recombinant H1N1 with avian segments point our lack of information on many aspects of the ecology and epidemiology of these viruses in their natural hosts to enable the implementation of more effective prevention and control measures. In this review, we attempt to make a critical essay on the current state of knowledge on the biotic and abiotic factors that influence the ecology and epidemiology of the influenza A viruses in wild birds.Los virus influenza ocasionan enfermedades respiratorias e intestinales. Su importancia en la generación de cepas pandémicas ha conducido a la realización de intensa investigación científica para entender y conocer su distribución en la naturaleza, así como las relaciones que se establecen para la transmisión efectiva entre diferentes hospederos. Las aves acuáticas principalmente del orden Anseriformes, se han reconocido como el reservorio de estos virus y tienen una participación crucial en la propagación y generación de diversidad de estos virus. La emergencia de nuevos virus influenza con potencial pandémico entre la población humana (H5N1 de origen aviar y el actual virus pandémico H1N1 que presenta segmentos aviares, resalta la falta de información sobre muchos aspectos de la ecología y epidemiología de estos virus en sus hospederos naturales, que permitan la implementación de medidas más efectivas de prevenci

  10. Genes associated with pathogenicity of avian Escherichia coli (APEC isolated from respiratory cases of poultry Genes associados à patogenicidade de Escherichia coli patogênica para aves (APEC isoladas de frangos de corte com sintomatologia clínica respiratória

    Directory of Open Access Journals (Sweden)

    Ana C.G.P. Rocha

    2008-03-01

    Full Text Available The virulence mechanisms of avian pathogenic Escherichia coli (APEC have been continually studied and are believed to be multi-factorial. Certain properties are primarily associated with virulent samples and have been identified in avian isolates. In this study a total of 61 E. coli, isolates from chicken flocks with respiratory symptomatology, were probed by Polimerase Chain Reation (PCR for the presence of genes responsible for the adhesion capacity, P fimbria (papC e F11 fimbria (felA, colicin production (cvaC, aerobactin presence (iutA, serum resistance (iss, temperature-sensitive hemagglutinin (tsh, and presence of K1 and K5 capsular antigens (kpsII. The iss gene was detected in 73,8%, tsh in 55,7%, iutA in 45,9%, felA in 39,3%, papC in 24,3%, cvaC in 23% and kpsII in18%.Os mecanismos de virulência das amostras de Escherichia coli potencialmente patogênicas para aves (APEC têm sido continuamente estudados e acredita-se ser multifatorial. Certas propriedades são associadas primariamente a amostras virulentas e vêm sendo identificadas em amostras de E. coli isoladas de aves. Neste estudo um total de 61 amostras de E. coli, isoladas de frangos de corte com problemas respiratórios, foram testadas através da Reação em Cadeia da Polimerase (PCR, para a presença dos genes responsáveis pela capacidade de adesão, fimbria P (papC e fimbria F11 (felA, produção de colicinas (cvaC, presença de aerobactina (iutA, resistência sérica (iss, hemaglutinina temperatura sensível (tsh e presença de dos antígenos capsulares K1 e K5 (kpsII. O gene iss foi detectado em 73,8%, tsh em 55,7%, iutA em 45,9%, felA em 39,3%, papC em 24,3%, cvaC em 23% e kpsII em 18%.

  11. Comportamento de poedeiras criadas a diferentes densidades e tamanhos de grupo em ambiente enriquecido

    Directory of Open Access Journals (Sweden)

    Danilo Florentino Pereira

    2013-06-01

    Full Text Available O objetivo deste trabalho foi determinar diferenças comportamentais entre poedeiras criadas sob diferentes densidades e tamanhos de grupo, em condições de ambiente enriquecido. Foram utilizadas poedeiras Isa Brown com idade entre 30 e 32 semanas alojadas em galpões de escala reduzida e distorcida. As aves foram criadas durante 28 dias, em baias com cama de maravalha, poleiro e ninho. Foram avaliados dois tamanhos de grupos (6 e 12 aves e duas densidades de criação (774 e 1.440 cm² por ave, em arranjo fatorial com três repetições. Em amostras de vídeo de 15 min, foram registrados as frequências e os tempos de expressão dos comportamentos: arrumar penas, banho de areia, bater asas, beber água, bicar, coçar a cabeça, ciscar, comer, empoleirar, esticar perna, perseguir, sentar e visitar o ninho. Foram observados efeitos significativos dos tratamentos e da interação entre eles. O grupo de seis aves manifestou aumento da frequência de comportamentos que indicam maior frustração das aves, independentemente da densidade. O tamanho de grupo é o fator mais importante para o bem-estar das aves.

  12. Experimental infection of laying hens with Salmonella enterica serovar Gallinarum Infecção experimental com Salmonella enterica serovar Gallinarum em poedeiras comerciais

    Directory of Open Access Journals (Sweden)

    Gláucia Helaine de Oliveira

    2005-03-01

    Full Text Available Experimental infections were set up in commercial laying birds, comprising a white relatively resistant line and a red susceptible line infecting with Salmonella enterica serovar Gallinarum. The major findings were that in susceptible birds clinical disease occurred in a dose-dependent manner. Faecal excretion occurred in susceptible birds almost up to death but also occurred in the more resistant line and in birds, which were convalescing. Removal of birds, which had died from the disease, from the environment, reduced the resultant mortality/morbidity and may be regarded as a useful measure for control.Infecções experimentais por Salmonella enterica serovar Gallinarum foram realizadas em aves de postura comercial, incluindo uma linhagem branca resistente e uma linhagem vermelha susceptível ao desenvolvimento da enfermidade clínica. As aves de linhagem susceptível apresentaram doença clínica dependente da dose administrada. Excreção fecal foi observada em aves da linhagem susceptível próximo ao momento da morte e, eventualmente, em aves da linhagem resistente e aves convalescentes. A remoção das aves mortas do meio ambiente reduziu a taxa de mortalidade/morbidade, procedimento este que pode ser utilizado como medida de controle.

  13. 76 FR 34099 - National Register of Historic Places; Notification of Pending Nominations and Related Actions

    Science.gov (United States)

    2011-06-10

    ... Recreation Center, 1361 Dr. Martin Luther King, Jr. Ave., Mobile, 11000407 International Longshoreman's Association Hall, 505 Dr. Martin Luther King, Jr. Ave., Mobile, 11000408 KANSAS Butler County Yingling...

  14. APLICACIÓN DE LOS SIG PARA LA EVALUACIÓN DEL ESTADO DE CONSERVACIÓN DEL HÁBITAT DEL PAUJIL DE PICO AZUL CRAX ALBERTI (AVES: CRACIDAE EN EL NORORIENTE DE ANTIOQUIA, COLOMBIA

    Directory of Open Access Journals (Sweden)

    Adriana María Molina

    Full Text Available El paujil de pico azul, Crax alberti, es un ave endémica del norte de Colombia en peligro crítico de extinción, sometida a la pérdida del hábitat y a la cacería de subsistencia como principales amenazas. Se desarrolló una aplicación de Sistemas de Información Geográfica (SIG para comparar el estado de conservación de las áreas de bosque, hábitat del paujil de pico azul, en 15 municipios de la región del nororiente de Antioquia en dos períodos de tiempo diferentes (1986 y 2002. La aplicación desarrollada que incorpora información cartográfica digital permitió clasificar ocho zonas definidas en el área de estudio para realizar un análisis de las prioridades de conservación. Se formularon, además, algunas recomendaciones para futuras aplicaciones de SIG como herramienta para la gestión de la conservación de especies amenazadas en Colombia.

  15. Doryctopambolus Nunes & Zaldívar-Riverón (Braconidae), a new neotropical doryctine wasp genus with propodeal spines

    Science.gov (United States)

    Nunes, Juliano Fiorelini; Zaldívar-Riverón, Alejandro; de Castro, Clóvis Sormus; Marsh, Paul M.; Penteado-Dias, Angélica Maria; Briceño, Rosa; Martínez, Juan José

    2012-01-01

    Abstract The new Neotropical doryctine genus Doryctopambolus gen. n. is erected to contain Doryctopambolus pilcomayensis (van Achterberg & Braet, 2004), comb. n., which was previously placed within Pambolus (Pambolinae), as well as three new species, Doryctopambolus clebschi sp. n., Doryctopambolus dominicanus sp. n. and Doryctopambolus sarochensis sp. n. Members of this new genus are mainly characterised by the presence of at least one pair of conspicuous propodeal apico-lateral projections, which are similar to those present in all members of Pambolinae and in species of three Australasian doryctine genera. We generated DNA barcoding sequences for the three newly described species. We discuss the morphological similarity between species of the Australasian Echinodoryctes Belokobylskij, Iqbal & Austin and Doryctopambolus. A key for the described species of Doryctopambolus is provided. PMID:23166460

  16. Análise de componentes principais em características de produção de aves de postura Principal component analysis in laying hen production traits

    Directory of Open Access Journals (Sweden)

    André Luis da Costa Paiva

    2010-02-01

    Full Text Available Para avaliar a possibilidade de descarte de variáveis de produção em 942 aves de postura por meio de componentes principais, visando eliminar características redundantes e de difícil mensuração, foram utilizados os dados obtidos de linhagens de aves de postura do Programa de Melhoramento Genético da Universidade Federal de Viçosa. As características analisadas foram: taxa de postura da 26ª à 58ª semana de idade (TP; peso médio individual na 34ª (PMI1, na 42ª (PMI2, na 50ª (PMI3, na 58ª (PMI4 e na 66ª semana (PMI5; e peso médio do ovo na 34ª (PMO1, na 42ª (PMO2, na 50ª (PMO3, na 58ª (PMO4 e na 66ª semana de idade (PMO5. Dos 11 componentes principais, oito apresentaram variância inferior a 0,7 (autovalor inferior a 0,7, o que sugere oito variáveis para descarte. As variáveis descartadas foram aquelas com maiores coeficientes, em valor absoluto, a partir do último componente principal, uma vez que variáveis altamente correlacionadas aos componentes principais de menor variância representam variação praticamente insignificante. As variáveis descartadas apresentaram correlação linear simples significativa com as demais, ou seja, foram redundantes. Com base nesses resultados, recomendam-se as seguintes variáveis para utilização em experimentos futuros: TP, PMI1 e PMO4.To assess the possibility of discarding production variables in 942 laying hens by principle component analysis to eliminate unnecessary and difficult to measure characteristics, data were obtained from laying hen lines of the genetic breeding program of the Universidade Federal de Viçosa. The traits analyzed were egg production rate (TP from the 26th to the 58th week, individual mean weight at the 34th (PMI1, 42th (PMI2, 50th (PMI3, 58th (PMI4 and 66th week (PMI5; egg mean weight at the the 34th (PMO1, 42nd (PMO2, 50th (PMO3, 58th (PMO4 and 66th weeks of age (PMO5. Eight of the 11 principal components showed variance lower than 0.7 (eigenvalue

  17. 75 FR 5595 - Notice of Agreements Filed

    Science.gov (United States)

    2010-02-03

    ..., Esq.; Hoppel, Mayer & Coleman; 1050 Connecticut Ave., NW., 10th Floor; Washington, DC 20036. Synopsis... Distribution, Inc. Filing Party: Paul D. Coleman, Esq.; Hoppel, Mayer & Coleman; 1050 Connecticut Ave. NW...

  18. 75 FR 32502 - National Register of Historic Places; Notification of Pending Nominations and Related Actions

    Science.gov (United States)

    2010-06-08

    ..., 5935 Hohman Ave, Hammond, 10000376 Porter County Haste-Crumpacker House, 208 N Michigan St, Valparaiso..., 1170 8th Ave, Bethlehem, 10000401 Northampton County Heller, Michael and Margaret, House, 1890-1892...

  19. Professed religious affiliation and the practice of euthanasia.

    Science.gov (United States)

    Baume, P; O'Malley, E; Bauman, A

    1995-02-01

    Attitudes towards active voluntary euthanasia (AVE) and physician-assisted suicide (PAS) among 1,238 doctors on the medical register of New South Wales varied significantly with self-identified religious affiliation. More doctors without formal religious affiliation ('non-theists') were sympathetic to AVE, and acknowledged that they had practised AVE, than were doctors who gave any religious affiliation ('theists'). Of those identifying with a religion, those who reported a Protestant affiliation were intermediate in their attitudes and practices between the agnostic/atheist and the Catholic groups. Catholics recorded attitudes most opposed to AVE, but even so, 18 per cent of Catholic medical respondents who had been so requested, recorded that they had taken active steps to bring about the death of patients.

  20. Fisonomía vegetal y abundancia de aves en un bosque templado con dos niveles de perturbación en el Eje Neovolcánico Transversal Vegetation physiognomy and abundance of birds in a temperate forest with two disturbance levels in the Eje Neovolcanico Transversal

    Directory of Open Access Journals (Sweden)

    Saúl Ugalde-Lezama

    2012-03-01

    Full Text Available Durante noviembre 2003 y junio 2004 se estudió la abundancia de especies de aves y su relación con la fisonomía vegetal en un bosque templado bajo 2 condiciones: bosque de pino no perturbado (ZOQ1 y bosque de pino perturbado (ZOQ2 de la Estación Forestal Experimental Zoquiapan (EFEZ, Estado de México. Para el conteo de aves se empleó el método de puntos de conteo con radio fijo (25 m. Los principales gradientes de las variables descriptoras de la vegetación se determinaron con análisis de componentes principales (ACP y la relación fisonomía-abundancia por especie y grupos de aves mediante análisis de regresión Poisson (ARP. Los ejes principales del ACP explicaron el 84.3, 83.4 y 81.7% de la variabilidad presente en la vegetación de ZOQ1, ZOQ2 y ZOQ1-ZOQ2. La cobertura, diámetro y altura de árboles fueron las variables que explicaron el 41.5, 43.7 y 41.8% de la varianza para el componente 1. La cobertura, diámetro y altura de arbustivas explicaron el 28.4, 25.0 y 25.3% para el 2; por último, la cobertura de herbáceas y arbustivas el 14.4, 14.6 y 14.5% para el componente 3. Los ARP indicaron una relación estadísticamente significativa (pFrom November 2003 to June 2004, we studied the abundance of bird species and their relationship with vegetation physiognomy (structure in a temperate forest under 2 conditions: undisturbed forest (ZOQ1 and disturbed forest (ZOQ2 of the Zoquiapan Forest Experimental Station (EFEZ, acronym in Spanish in central Mexico. Birds were recorded using the method of fixed radius point counts (25 m. We identified the major gradients of variation of descriptive variables of vegetation using Principal Component Analysis (PCA, and the relationship between vegetation physiognomy and bird abundance through Poisson regression analyses (ARP. The three main axes of PCA explained the 84.3, 83.4 and 81.7% of the variability present in the vegetation of ZOQ1, ZOQ2 and ZOQ1-ZOQ2, respectively. Tree cover, diameter

  1. 78 FR 9771 - Notice of Opportunity for Public Comment on Surplus Property Release at Brunswick-Golden Isles...

    Science.gov (United States)

    2013-02-11

    ... address: Atlanta Airports District Office, Attn: Aimee A. McCormick, Program Manager, 1701 Columbia Ave... McCormick, Program Manager, Atlanta Airports District Office, 1701 Columbia Ave., Suite 2-260, Atlanta, GA...

  2. Velcro on the slippery slope: the role of psychiatry in active voluntary euthanasia.

    Science.gov (United States)

    Ryan, C J

    1995-12-01

    The aim of the paper is to determine the role that psychiatrists should play in legislation that establishes a right to active voluntary euthanasia (AVE). One version of the "slippery slope" argument, usually invoked against the legalisation of AVE, is recast as an argument for the introduction of strong safeguards in any future AVE legislation. The literature surrounding the prevalence of psychiatric illnesses in the terminally ill, physicians' ability to identify such illnesses and the aetiology of suicide in the terminally ill is examined. The strength of the slippery slope argument, combined with the poor ability of general physicians to diagnose psychiatric illness in the terminally ill, demands that any legislation allowing AVE should require a mandatory psychiatric review of the patient requesting euthanasia. Any legislation adopted that establishes a right to active voluntary euthanasia should include a mandatory psychiatric review of the person requesting euthanasia and a cooling off period before the request is acceded to. In addition, the discovery of a serious mental illness ought to disqualify the affected person from the right to AVE until that illness resolves.

  3. Las aves de distribución mediterránea en el País Vasco: abundancia y tendencia poblacional en el sur de Álava

    Directory of Open Access Journals (Sweden)

    Gainzarain, J.A., Belamendia, G.

    2015-01-01

    Full Text Available Varias especies de aves, entre ellas algunas catalogadas como amenazadas, presentan en la Comunidad Autónoma Vasca una distribución meridional centrada en la Rioja Alavesa. Mediante transectos efectuados en esta comarca en las primaveras de 2012 y 2013, se obtuvieron datos sobre la abundancia de estas especies en diferentes tipos de hábitat. Con el fin de conocer la evolución reciente de sus poblaciones, esta información se comparó con la de dos estudios anteriores, llevados a cabo en 1988/89 y 1994. Nuestros datos revelan que el alcaudón real Lanius meridionalis se ha extinguido como nidificante en la comarca y que, junto con esta especie, la tórtola europea Streptopelia turtur, la calandria común Melanocorypha calandra y el escribano hortelano Emberiza hortulana son las que han experimentado una disminución más marcada. En sentido contrario, la curruca cabecinegra Sylvia melanocephala ha colonizado la comarca después de 1988, y la terrera común Calandrella brachydactyla probablemente haya aumentado sus efectivos. Las tendencias observadas coinciden en gran medida con las registradas en el conjunto de España mediante el programa SACRE. La abundancia global del grupo de especies analizadas ha sufrido un descenso significativo en las dos últimas décadas, paralelo a un notable aumento de la superficie ocupada por el viñedo en la comarca en detrimento de otros usos minoritarios del suelo.

  4. Increased prevalence of antibiotic-resistant E. coli in gulls sampled in southcentral Alaska is associated with urban environments

    Science.gov (United States)

    Atterby, Clara; Ramey, Andrew M.; Gustafsson Hall, Gabriel; Jarhult, Josef; Borjesson, Stefan; Bonnedahl, Jonas

    2016-01-01

    BackgroundAntibiotic-resistant bacteria pose challenges to healthcare delivery systems globally; however, limited information is available regarding the prevalence and spread of such bacteria in the environment. The aim of this study was to compare the prevalence of antibiotic-resistant bacteria in large-bodied gulls (Larus spp.) at urban and remote locations in Southcentral Alaska to gain inference into the association between antibiotic resistance in wildlife and anthropogenically influenced habitats.MethodsEscherichia coli was cultured (n=115 isolates) from fecal samples of gulls (n=160) collected from a remote location, Middleton Island, and a more urban setting on the Kenai Peninsula.ResultsScreening of E. coli from fecal samples collected from glaucous-winged gulls (Larus glaucescens) at Middleton Island revealed 8% of isolates were resistant to one or more antibiotics and 2% of the isolates were resistant to three or more antibiotics. In contrast, 55% of E. coli isolates derived from fecal samples collected from large-bodied gulls (i.e. glaucous, herring [Larus argentatus], and potentially hybrid gulls) on the Kenai Peninsula were resistant to one or more antibiotics and 22% were resistant to three or more antibiotics. In addition, total of 16% of the gull samples from locations on the Kenai Peninsula harbored extended-spectrum cephalosporin-resistant E. coli isolates (extended-spectrum beta-lactamases [ESBL] and plasmid-encoded AmpC [pAmpC]), in contrast to Middleton Island where no ESBL- or pAmpC-producing isolates were detected.ConclusionOur findings indicate that increased prevalence of antibiotic resistance is associated with urban environments in Southcentral Alaska and presumably influenced by anthropogenic impacts. Further investigation is warranted to assess how migratory birds may maintain and spread antimicrobial-resistant bacteria of relevance to human and animal health.

  5. Elaboração de um manual ilustrado de exercícios domiciliares para pacientes com hemiparesia secundária ao acidente vascular encefálico (AVE Elaboration of an illustrated home exercise manual for stroke patients with hemiparesis

    Directory of Open Access Journals (Sweden)

    Adriana Maria Barsante Santos

    2012-03-01

    Full Text Available A realização de exercícios físicos para pacientes com sequelas motoras pós-acidente vascular encefálico (AVE é essencial para a recuperação funcional. Programas educacionais podem facilitar a repetição dos exercícios em casa e contribuir para o tratamento. Este trabalho teve como objetivo elaborar e aplicar um manual de exercícios domiciliares para pacientes com AVE. O estudo consistiu em duas etapas: na primeira foi elaborado um manual de exercícios domiciliares (piloto com fotos e textos simples para facilitar a compreensão. Foi realizada uma avaliação funcional de cada paciente e selecionados os exercícios mais adequados, que deveriam ser feitos em casa. Esse manual foi aplicado a 17 pacientes, 70% crônicos e 30% agudos. Após 15 dias, o paciente retornava e era solicitado que reproduzisse os exercícios e informasse o nível de compreensão das fotos e do texto do manual e se sentia dor ao realizá-los. As fotos e os exercícios referidos como difíceis foram revistos, e criada a versão teste que foi aplicada em outros 23 pacientes, dando origem à versão final do manual. A avaliação do manual piloto foi insatisfatória, sendo que apenas 56% referiram aprovação das fotos e 87% do texto. Após a reformulação, a compreensão das fotos e do texto alcançou valores acima de 98%. Foi possível obter um manual ilustrado de exercícios domiciliares, de fácil aplicação e compreensão, específico e individualizado, para pacientes com AVE e adaptável aos diferentes quadros motores.The practice of exercises for patients with motor sequels post-stroke is essential for the functional recovery. Educational programs can facilitate the repetition of the exercises at home and contribute to the treatment. The objective of this study was to elaborate a home exercise manual for stroke patients. The study consisted of two stages: in the first one, a home exercise manual was made (pilot with pictures and simple text to facilitate

  6. Respuesta productiva de gallinas semipesadas inducidas al descanso ovárico en diferentes edades

    Directory of Open Access Journals (Sweden)

    Luis Galeano V.

    2012-12-01

    Full Text Available Objetivo. Evaluar el efecto de la inducción al descanso ovárico (DO a diferentes edades sobre la respuesta productiva en aves semipesadas productoras de huevo comercial. Materiales y método. Se usaron 840 aves de la línea Hy Line Brown con 64 semanas de edad, distribuidas en 10 tratamientos, consistentes en tres edades (65, 70 y 75 semanas con la aplicación de tres períodos de ayuno (5, 10 y 15 días y un control (sin DO. El análisis estadístico utilizó un modelo completamente aleatorizado, anidado, efecto fijo y balanceado. Se evaluó consumo de calcio durante el ayuno (g/ave/día, consumo de alimento (g/ave/día, porcentaje de producción, peso del huevo (g, conversión por masa de huevo y huevos por ave alojada (HAA. Resultados. La edad presentó efecto significativo (p<0.05 sobre las variables consumo de alimento, día del primer huevo postmuda, días sin producción, día postmuda de retorno al 50% de producción, peso del huevo, número de huevos, masa huevos, conversión y porcentaje de producción (p<0.01. Al comparar con el control, el tratamiento 75-5 presentó efecto significativo (p<0.05 para las variables: consumo de alimento, número de huevos promedio, masa huevos y conversión. Conclusiones. Las aves con mayor período de ayuno presentaron mayor período improductivo postmuda, grandes pérdidas de peso y alto consumo de alimento, lo que genera alta conversión e ineficiencia productiva. En comparación con reportes de literatura sobre DO en aves livianas, las aves semipesadas llegan al cese de producción en menos días y su período improductivo es menor.

  7. Ponovno odkritje dvoma o ikoni: študija izmišljenega primera iz prestolnice nekdanje sovjetske države

    Directory of Open Access Journals (Sweden)

    Lazaros E. Mavromatidis

    2012-01-01

    Full Text Available Cilj članka so opredelitev in obravnava radikalnih družbeno-kulturnih pristopov oblikovanja pokrajine v današnjih megamestih znotraj strogega kapitalističnega konteksta ter razpravljanje o njih. V ta namen je v članku teoretično in na primeru preučen prostorski izraz znotraj vsiljenega sodobnega foucaultovskega »stanja znanosti«. V okviru raziskovalne metodologije sta tako sočasno uporabljeni različni hipotezi, ki naj bi premostili vrzel med teoretičnim preučevanjem in stvarnim vidikom arhitekturnega ustvarjanja. Glavna hipoteza temelji na lacanovskem konceptu dvoma. V članku je dvom upoštevan kot chomskyjanska primitivna sila, ki oblikuje vsakršno zamisel ali koncept in lahko pokvari »radikalno imaginacijo« vsake družbe, kot jo v svojih delih opredeljuje Castoriadis. Druga glavna hipoteza temelji na analitični študiji ustvarjanja prostora znotraj strogih političnih in gospodarskih kontekstov, v okviru katere so na primeru nekdanje Sovjetske zveze preučene vrednote kulturne pokrajine v komunističnem in kapitalističnem režimu. Največ pozornosti se posveča Armeniji in zlasti preobrazbi pokrajine v prestolnici Erevan med prehodom iz komunizma v kapitalizem. V članku so najprej podrobno teoretično obravnavani neekonomski dejavniki, na podlagi katerih bi morale kapitalistične države upoštevati potrebe socialno šibkejših družbenih skupin, ki nimajo prostora v današnjih megamestih, nato pa je podrobno predstavljena izvirna zasnova pokrajine v okviru novejšega arhitekturnega natečaja, ki ga tu razumemo kot sodobno foucaultovsko »stanje znanosti«. Glavni cilj predstavljene arhitekturne zasnove je izpolnitev razpisnih pogojev in pri tem združitev vsiljene podobe globalnega kapitalizma z lokalnimi prvinami. Pri tem naj bi se oblikovala foucaultovska heterotopija, in sicer tako, da se različnim družbeno-kulturnim identitetam omogoči, da razpravljajo o predlagani ikonični prostorski podobi, jo izpodbijajo ali

  8. Journal of Chemical Sciences | Indian Academy of Sciences

    Indian Academy of Sciences (India)

    Author Affiliations. DENYS G GROMADSKYI1 2. Joint Department of Electrochemical Energy Systems, 38A Vernadsky Ave, 03680 Kyiv, Ukraine; National Technical University of Ukraine “KPI”, 37 Peremohy Ave, 03056, Kyiv, Ukraine ...

  9. Primerless Finishing Systems for the Corrosion Protection of Aluminum.

    Science.gov (United States)

    1988-09-19

    1 Attn: K. Silberger 208485S. Normandle Ave. Torrance, CA 90502 Center For Naval Analyses................................................. 1 4401 Font Ave P.O. Box 16268 Alexandria, VA 22302-0268 MWA~2 i40Ř 7b

  10. 75 FR 65362 - Oncologic Drugs Advisory Committee; Notice of Meeting

    Science.gov (United States)

    2010-10-22

    ... Hampshire Ave., Silver Spring, MD 20993-0002. Information regarding special accommodations due to a... Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Ave., Bldg. 31, rm. 2417, Silver...) Soft Gelatin Capsules, [[Page 65363

  11. 78 FR 63233 - National Offshore Safety Advisory Committee; Meeting

    Science.gov (United States)

    2013-10-23

    ....S. Coast Guard, 2703 Martin Luther King Jr. Ave. SE., Stop 7509, Washington, DC 20593-7509... (ADFO) of NOSAC, Commandant (CG-OES-2), U.S. Coast Guard, 2703 Martin Luther King Jr. Ave. SE., Stop...

  12. Feather mites (Acari: Astigmata) on birds of Cerrado in Distrito Federal, Brazil

    OpenAIRE

    Kanegae, Mieko Ferreira; Valim, Michel; Fonseca, Marcelo Andrade da; Marini, Miguel Ângelo; Freire, Nicolau Maués Serra

    2008-01-01

    O objetivo do estudo foi identificar os ácaros plumícolas em aves do cerrado. O mesmo foi realizado na Fazenda Água Limpa (FAL), Distrito Federal, Brasil, entre janeiro e agosto de 2002. As aves foram capturadas com rede de neblina e anilhadas. Foram amostradas 696 aves pertencentes a 83 espécies e 25 famílias de Passeriformes e não-Passeriformes. Foram encontrados ácaros plumícolas pertencentes a cinco famílias: Analgidae, Trouessartiidae, Proctophyllodidae, Avenzoariidae e Psoroptoididae. O...

  13. La influenza aviar y el riesgo de infección en seres humanos

    OpenAIRE

    Vargas, Javier

    2005-01-01

    La gripe aviar es una infección causada por el virus influenza de aves. La infección ocurre de manera natural entre aves silvestres, las cuales portan el virus en su vía digestiva. Ocasionalmente pueden transmitirla a aves domésticas como gallinas, patos, palomas, etc. las cuales pueden enfermar y ocacionalmente morir. Comúnmente los virus de la influenza aviar no infectan a los seres humanos sin embargo desde 1997, se han documentado casos de infección humana.

  14. Estudio del cambio climático y su efecto en las aves en México: enfoques actuales y perspectivas futuras

    Directory of Open Access Journals (Sweden)

    Teresa Patricia Feria Arroyo

    2013-01-01

    Full Text Available El cambio climático está impactando la biodiversidad en el planeta. En México diferentes líneas de investigación se han desarrollado para estudiar los efectos del cambio climático en la distribución de su avifauna. Entender qué enfoques se usan en el país para estudiar este fenómeno puede ayudar a planear mejor los esfuerzos de conservación, determinar qué especies y sitios serían los más afectados, ubicar qué lugares y qué proyectos deberían recibir más atención para asignar los pocos recursos económicos existentes de manera más eficiente. En este documento describimos los enfoques usados por ocho grupos de investigación que estudian los efectos del cambio climático en la avifauna mexicana. El 87.5% usó tres escenarios de cambio climático: A1B, A2 y B2. Todos los gupos, salvo uno, usaron las variables de WorldClim. El 62.5% usó los modelos de circulación general canadiense (CCCMA y australiano (CSIRO y el 87.5% usó GARP o MaxEnt para modelar la distribución de especies. Se requiere avanzar en cuatro áreas: (1 elaborar mapas climáticos con mayor resolución, (2 incrementar la colaboración entre grupos de investigación, (3 realizar estudios de identificación de especies y áreas en mayor riesgo, y (4 aplicar los conocimientos que se tienen a la fecha. Proponemos 17 recomendaciones que, de seguirse, podrían determinar que el desarrollo futuro de estas cuatro áreas influya en la conservación de las aves habitando en México. Los resultados de este trabajo podrían ayudar a los científicos, tomadores de decisiones y manejadores de recursos naturales a planear estrategias de conservación apropiadas para el futuro.

  15. Factors associated with the rejection of active euthanasia: a survey among the general public in Austria

    Science.gov (United States)

    2013-01-01

    Background In recent decades, the general public has become increasingly receptive toward a legislation that allows active voluntary euthanasia (AVE). The purpose of this study was to survey the current attitude towards AVE within the Austrian population and to identify explanatory factors in the areas of socio-demographics, personal experiences with care, and ideological orientation. A further objective was to examine differences depending on the type of problem formulation (abstract vs. situational) for the purpose of measuring attitude. Methods A representative cross-sectional study was conducted across the Austrian population. Data were acquired from 1,000 individuals aged 16 years and over based on telephone interviews (CATI). For the purpose of measuring attitude toward AVE, two different problem formulations (abstract vs. situational) were juxtaposed. Results The abstract question about active voluntary euthanasia was answered negatively by 28.8%, while 71.2% opted in favour of AVE or were undecided. Regression analyses showed rejection of AVE was positively correlated with number of adults and children in the household, experience with care of seriously ill persons, a conservative worldview, and level of education. Mean or high family income was associated with lower levels of rejection. No independent correlations were found for variables such as sex, age, political orientation, self-rated health, and experiences with care of terminally ill patients. Correlation for the situational problem formulation was weaker and included fewer predictors than for the abstract question. Conclusions Our results suggest that factors relating to an individual’s interpersonal living situation and his/her cognitive convictions might be important determinants of the attitude toward AVE. If and to the extent that personal care experience plays a role, it is rather associated with rejection than with acceptance of AVE. PMID:23826902

  16. Hepatic steatosis is associated with increased hepatic FDG uptake

    Energy Technology Data Exchange (ETDEWEB)

    Keramida, Georgia, E-mail: G.Keramida@bsms.ac.uk [Clinical Imaging Sciences Centre, Brighton Sussex Medical School, Brighton (United Kingdom); Department of Nuclear Medicine, Brighton Sussex University Hospitals NHS Trust, Brighton (United Kingdom); Potts, Jon [Department of Medicine, Brighton Sussex University Hospitals NHS Trust, Brighton (United Kingdom); Bush, Janice [Clinical Imaging Sciences Centre, Brighton Sussex Medical School, Brighton (United Kingdom); Dizdarevic, Sabina; Peters, A. Michael [Clinical Imaging Sciences Centre, Brighton Sussex Medical School, Brighton (United Kingdom); Department of Nuclear Medicine, Brighton Sussex University Hospitals NHS Trust, Brighton (United Kingdom)

    2014-05-15

    Objective: The use of liver as a reference tissue for semi-quantification of tumour FDG uptake may not be valid in hepatic steatosis (HS). Previous studies on the relation between liver FDG uptake and HS have been contradictory probably because they ignored blood glucose (BG). Because hepatocyte and blood FDG concentrations equalize, liver FDG uptake parallels BG, which must therefore be considered when studying hepatic FDG uptake. We therefore re-examined the relation between HS and liver uptake taking BG into account. Methods: This was a retrospective study of 304 patients undergoing routine PET/CT with imaging 60 min post-FDG. Average standard uptake value (SUV{sub ave}), maximum SUV (SUV{sub max}) and CT density (index of HS) were measured in a liver ROI. Blood pool SUV was based on the left ventricular cavity (SUV{sub LV}). Correlations were assessed using least squares fitting of continuous data. Patients were also divided into BG subgroups (<4, 4–5, 5–6, 6–8, 8–10 and 10+ mmol/l). Results: SUV{sub ave}, SUV{sub max} and SUV{sub LV} displayed similar relations with BG. SUV{sub max}/SUV{sub LV}, but not SUV{sub ave}/SUV{sub LV}, correlated significantly with BG. SUV{sub max}, but not SUV{sub ave}, correlated inversely with CT density before and after adjusting for BG. SUV{sub max}/SUV{sub ave} correlated more strongly with CT density than SUV{sub max}. CT density correlated inversely with SUV{sub max}/SUV{sub LV} but positively with SUV{sub ave}/SUV{sub LV}. Conclusions: Hepatic SUV is more influenced by BG than by HS. Its relation with BG renders it unsuitable as a reference tissue. Nevertheless, hepatic fat does correlate positively with liver SUV, although this is seen only with SUV{sub max} because SUV{sub ave} is ‘diluted’ by hepatic fat.

  17. Efeito da Densidade de Criação e do Sexo Sobre o Empenamento, Incidência de Lesões na Carcaça e Qualidade da Carne de Peito de Frangos de Corte

    Directory of Open Access Journals (Sweden)

    Garcia RG

    2002-01-01

    Full Text Available O experimento foi conduzido nas instalações experimentais da Faculdade de Medicina Veterinária e Zootecnia - UNESP, Campus de Botucatu, SP, Brasil, com o objetivo de avaliar o efeito da densidade de criação e do sexo sobre o empenamento, incidência de lesões na carcaça e a qualidade de carne de peito de frangos de corte. Foram utilizados 1950 pintos de corte sexados, da linhagem Ross, distribuídos em um delineamento inteiramente casualizado, com esquema fatorial com 3 densidades (10, 13 e 16 aves/m² e dois sexos com 5 repetições, sendo que uma foi destinada exclusivamente para reserva, criados até os 42 dias de idade. Aos 28, 35 e 42 dias foram amostradas 3 aves por repetição para a determinação do empenamento através da porcentagem de penas e 10 aves para a determinação do escore de empenamento. Também aos 42 dias de idade todas as aves foram identificadas na pata com anilhas numeradas e submetidas à avaliação da incidência de lesões na pele. Foram escolhidas ao acaso 5 aves por repetição para a determinação da qualidade da carne de peito. Pode-se concluir que o aumento na densidade de criação promoveu uma diminuição na velocidade de empenamento e, conseqüentemente, uma maior incidência de lesões na carcaça. O comprimento, a largura e a espessura do peito foram menores para as aves criadas na maior densidade, e a perda de peso por cozimento foi maior para as aves criadas na maior densidade.

  18. Isolamento e identificação de Lactobacillus spp., Bifidobacterium spp., Enterococcus spp., Pediococcus spp. e Lactococcus spp. da microbiota intestinal de Papagaio-verdadeiro (Amazona aestiva)

    OpenAIRE

    Luciana Allegretti

    2009-01-01

    No Brasil, o papagaio-verdadeiro (Amazona aestiva) é uma das aves mais procuradas como animal de estimação e comercializadas ilegalmente. Na literatura pouco é descrito sobre a microbiota intestinal de aves silvestres. O trato intestinal das aves é composto por inúmeras e diferentes espécies bacterianas. A grande maioria são bactérias gram-positivas pertencentes ao grupo de bactérias ácido-láticas. Este estudo teve como objetivo isolar e identificar a presença de bactérias dos gêneros Lactoba...

  19. Composição e abundância de corujas em floresta atlântica e sua relação com variáveis de hábitat

    OpenAIRE

    Karina Felipe Amaral

    2007-01-01

    A heterogeneidade do habitat pode afetar diretamente ou indiretamente a disponibilidade de recursos necessários para a sobrevivência e reprodução das aves, uma vez que estas selecionam micro-habitats para forrageamento e sítios reprodutivos. As corujas são aves noturnas que desempenham um importante papel no equilíbrio do ecossistema, por evitar superpopulações de presas e eliminar indivíduos defeituosos. Essas aves são de pouquíssimo conhecimento e principalmente em relação ao uso de habitat...

  20. A breeding colony of Wedge-rumped Storm-Petrel, Oceanodroma tethys kelsalli (Lowe 1925), on Santa Island-Peru

    OpenAIRE

    Ayala, Liliana; Sanchez Scaglioni, Raul; Amoros, Samuel; Felipe, Luis

    2013-01-01

    Las áreas reproductivas de la Golondrina de la tempestad Peruana eran desconocidas hasta hace poco. Esta especie anida en la costa central del Perú, en las islas: Ferrol, Chao y Corcovado. Reportamos un área reproductiva para esta ave marina en la isla Santa. Localizamos un total de 407 nidos activos, incluyendo 92 (22%) con huevos y 7 (8%) con polluelos. La mayor parte de las aves reproductivas se hallaron cerca de la casa al este de la isla, en el sur y suroeste, donde se registraron aves g...

  1. Microvertebrados del sitio arqueológico Cueva El Abra, Tandilia oriental: tafonomía y paleoambiente

    OpenAIRE

    Quintana, Carlos A

    2016-01-01

    Se analizó la tafonomía y la diversidad de los restos óseos de microvertebrados (mamíferos, peces, aves y ofidios) del Holoceno tardío final del sitio Cueva El Abra, Tandilia oriental (Buenos Aires, Argentina). Los atributos tafonómicos indican que la acumulación de la muestra se debe a la actividad de aves rapaces nocturnas Strigiformes (roedores cricétidos, didélfidos, Ctenomys talarum y algunas aves), a la muerte ocasional en el sitio (ofidios) y a la actividad humana (roedores cávidos, pe...

  2. Perdida de carga en conductos de hierro galvanizado conduciendo agua residual de instalaciones de gallinas ponedoras

    OpenAIRE

    RODRIGUES DE SOUZA, José ANTONIO; ASTONI MOREIRA, DÉBORA; OLIVEIRA BATISTA, RAFAEL; OSORIO S., JAIRO ALEXANDER; ZAPATA MARÍN, OLGA LUCÍA

    2011-01-01

    Las operaciones relacionadas con la producción de aves de corral pueden generar efluentes procedentes de fuentes distintas, incluida la escorrentía originada en las jaulas, alimentación y abastecimiento de agua de las aves y de las instalaciones de almacenamiento y manejo de residuos. En todo proyecto de explotación de aves de corral, se debe tener en cuenta el manejo de residuos y aguas residuales, las cuales pueden ser conducidas en tuberías de hierro galvanizado. El objetivo de este trabaj...

  3. 78 FR 52504 - Quarterly Update to Annual Listing of Foreign Government Subsidies on Articles of Cheese Subject...

    Science.gov (United States)

    2013-08-23

    ..., International Trade Administration, U.S. Department of Commerce, 14th Street and Constitution Ave. NW... Import Administration, U.S. Department of Commerce, 14th Street and Constitution Ave. NW., Washington, DC..., Slovenia, Spain, Sweden, and the United Kingdom. [[Page 52505

  4. Preventing Pressure Sores

    Medline Plus

    Full Text Available ... established by Robert Hill and Thea Flaum. 737 N. Michigan Ave., Suite 1560 , Chicago, IL 60611. © 2011 – ... established by Robert Hill and Thea Flaum. 737 N. Michigan Ave., Suite 1560 , Chicago, IL 60611. © 2011 – ...

  5. Basics of SCI Rehabilitation

    Medline Plus

    Full Text Available ... established by Robert Hill and Thea Flaum. 737 N. Michigan Ave., Suite 1560 , Chicago, IL 60611. © 2011 – ... established by Robert Hill and Thea Flaum. 737 N. Michigan Ave., Suite 1560 , Chicago, IL 60611. © 2011 – ...

  6. Spinal Cord Injury 101

    Medline Plus

    Full Text Available ... established by Robert Hill and Thea Flaum. 737 N. Michigan Ave., Suite 1560 , Chicago, IL 60611. © 2011 – ... established by Robert Hill and Thea Flaum. 737 N. Michigan Ave., Suite 1560 , Chicago, IL 60611. © 2011 – ...

  7. Sex and Fertility After SCI

    Medline Plus

    Full Text Available ... established by Robert Hill and Thea Flaum. 737 N. Michigan Ave., Suite 1560 , Chicago, IL 60611. © 2011 – ... established by Robert Hill and Thea Flaum. 737 N. Michigan Ave., Suite 1560 , Chicago, IL 60611. © 2011 – ...

  8. Near-surface air temperature lapse rates in Xinjiang, northwestern China

    Science.gov (United States)

    Du, Mingxia; Zhang, Mingjun; Wang, Shengjie; Zhu, Xiaofan; Che, Yanjun

    2018-02-01

    Lapse rates of near-surface (2 m) air temperature are important parameters in hydrologic and climate simulations, especially for the mountainous areas without enough in-situ observations. In Xinjiang, northwestern China, the elevations range from higher than 7000 m to lower than sea level, but the existing long-term meteorological measurements are limited and distributed unevenly. To calculate lapse rates in Xinjiang, the daily data of near-surface air temperature ( T min, T ave, and T max) were measured by automatic weather stations from 2012 to 2014. All the in situ observation stations were gridded into a network of 1.5° (latitude) by 1.5° (longitude), and the spatial distribution and the daily, monthly, seasonal variations of lapse rates for T min, T ave, and T max in Xinjiang are analyzed. The Urumqi River Basin has been considered as a case to study the influence of elevation, aspect, and the wet and dry air conditions to the T min, T ave, and T max lapse rates. Results show that (1) the lapse rates for T min, T ave, and T max vary spatially during the observation period. The spatial diversity of T min lapse rates is larger than that of T ave, and that of T max is the smallest. For each season, T max lapse rates have more negative values than T ave lapse rates which are steeper than T min lapse rates. The weakest spatial diversity usually appears in July throughout a year. (2) The comparison for the three subregions (North, Middle, and South region) exhibits that lapse rates have similar day-to-day and month-to-month characteristics which present shallower values in winter months and steeper values in summer months. The T ave lapse rates in North region are shallower than those in Middle and South region, and the steepest T ave lapse rates of the three regions all appear in April. T min lapse rates are shallower than T max lapse rates. The maximum medians of T min and T max lapse rates for each grid in the three regions all appear in January, whereas the

  9. Atividade antimicrobiana de óleos essenciais de condimentos frente a amostras de Escherichia coli isoladas de aves e bovinos Antimicrobial activity of spice essential oils against Escherichia coli strains isolated from poultry and cattle

    Directory of Open Access Journals (Sweden)

    Deise Flores Santurio

    2011-06-01

    Full Text Available A discutida questão da substituição do uso de antibacterianos em rações (promotores de crescimento requer urgentes alternativas. Face às necessidades de inibidores microbianos nesses alimentos, os óleos essenciais (OES se constituem em alternativa, sob avaliação. Neste estudo, avaliou-se a atividade antimicrobiana dos OES de Origanum vulgare (orégano, Thymus vulgaris (tomilho, Cinnamomum zeylanicum (canela, Lippia graveolens (orégano mexicano, Zingiber officinale (gengibre, Salvia officinalis (sálvia, Rosmarinus officinalis (alecrim e Ocimum basilicum (manjericão frente a amostras de Escherichia coli isoladas de fezes de aves (n=43 e de bovinos (n=36. A concentração inibitória mínima (CIM e a concentração bactericida mínima (CBM foram determinadas para cada isolado através da técnica de microdiluição em caldo, a partir da máxima concentração de 6400µg mL-1 de cada OE testado. Observou-se atividade antimicrobiana para os OES de orégano, orégano mexicano, tomilho, canela. Para todas as amostras testadas, independente de sua origem, os OES mais e menos efetivos quanto à atividade antimicrobiana foram o orégano e a canela, respectivamente. Esses resultados confirmaram o potencial antibacteriano de alguns OES, os quais merecem novas investigações abordando sua adição na alimentação de aves e bovinos.The discussed issue about replacing the use of antibiotics in animal feed (growth promoters requires emerging alternatives. To meet the needs of microbial inhibitors in these foods, the essentials oils (EOS constitute potential alternatives under evaluation. In this study it was evaluated the antimicrobial activities of EOs from Oreganum vulgare (oregano, Thymus vulgaris (thyme, Lippia graveolens (Mexican oregano, Cinnamomum zeylanicum (cinnamon, Zingiber officinale (ginger, Salvia officinalis (sage, Rosmarinus officinalis (rosemary and Ocimum basilicum (basil against Escherichia coli strains isolated from poultry (n

  10. 40 CFR 262.83 - Notification and consent.

    Science.gov (United States)

    2010-07-01

    ... (CONTINUED) STANDARDS APPLICABLE TO GENERATORS OF HAZARDOUS WASTE Transfrontier Shipments of Hazardous Waste...), Environmental Protection Agency, 1200 Pennsylvania Ave., NW., Washington, DC 20460, with the words “Attention... (2254A), Environmental Protection Agency, 1200 Pennsylvania Ave., NW., Washington, DC 20460, with the...

  11. 40 CFR 262.53 - Notification of intent to export.

    Science.gov (United States)

    2010-07-01

    ... (CONTINUED) STANDARDS APPLICABLE TO GENERATORS OF HAZARDOUS WASTE Exports of Hazardous Waste § 262.53...), Environmental Protection Agency, 1200 Pennsylvania Ave., NW., Washington, DC 20460. Hand-delivered notifications... St. and Pennsylvania Ave., NW., Washington, DC 20004. In both cases, the following shall be...

  12. 75 FR 65495 - Draft Guidance for Industry on Qualification Process for Drug Development Tools; Availability

    Science.gov (United States)

    2010-10-25

    ...] Draft Guidance for Industry on Qualification Process for Drug Development Tools; Availability AGENCY... Drug Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Ave., Bldg. 51, rm... Drug Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Ave., Bldg. 21, rm...

  13. 75 FR 52310 - Quarterly Update to Annual Listing of Foreign Government Subsidies on Articles of Cheese Subject...

    Science.gov (United States)

    2010-08-25

    ... Administration, International Trade Administration, U.S. Department of Commerce, 14th Street and Constitution Ave... Constitution Ave., NW., Washington, DC 20230. This determination and notice are in accordance with section 702..., Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, and...

  14. 76 FR 14649 - Quarterly Update to Annual Listing of Foreign Government Subsidies on Articles of Cheese Subject...

    Science.gov (United States)

    2011-03-17

    ..., International Trade Administration, U.S. Department of Commerce, 14th Street and Constitution Ave., NW... Constitution Ave., NW., Washington, DC 20230. This determination and notice are in accordance with section 702..., Lithuania, Luxembourg, Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, and...

  15. 77 FR 51758 - Quarterly Update to Annual Listing of Foreign Government Subsidies on Articles of Cheese Subject...

    Science.gov (United States)

    2012-08-27

    ... Administration, International Trade Administration, U.S. Department of Commerce, 14th Street and Constitution Ave... Assistant Secretary for Import Administration, U.S. Department of Commerce, 14th Street and Constitution Ave..., Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, and the United Kingdom. [[Page 51759

  16. 76 FR 2860 - National Emission Standards for Hazardous Air Pollutants From the Portland Cement Manufacturing...

    Science.gov (United States)

    2011-01-18

    ... Cement Manufacturing Industry and Standards of Performance for Portland Cement Plants AGENCY... Portland Cement Manufacturing Industry Docket, Docket ID No. EPA-HQ-OAR-2002-0051, 1200 Pennsylvania Ave... Portland Cement Manufacturing Industry Docket, EPA West, Room 3334, 1301 Constitution Ave., NW., Washington...

  17. EFECTO DE LA TEMPERATURA Y VELOCIDAD DE LA LÍNEA DE COLGADO, EN EL PORCENTAJE DE PLUMA Y DESPIGMENTACIÓN DE AVES BLANCA Y CAMPESINA, DURANTE EL PROCESO DE ESCALDADO EFEITO DA TEMPERATURA E LINHA DE VELOCIDADE DE SUSPENSÃO DO PERCENTUAL DE PENA DE AVES E BRANCAS DESPIGMENTAÇÃO CAMPONESES DURANTE O PROCESSO ESCALDAGEM EFFECT OF TEMPERATURE AND SPEED OF THE HANGING LINE ON THE PERCENTAGE OF FEATHER AND DEPIGMENTATION OF WHITE AND PEN CHICKENS, DURING THE SCALDING PROCESS

    Directory of Open Access Journals (Sweden)

    DEYANIRA MUÑOZ M

    2011-06-01

    Full Text Available En este trabajo se reporta el efecto de la temperatura y velocidad de la línea de colgado, en el porcentaje de pluma y despigmentación de aves blanca y campesina, durante el proceso de escaldado. Los valores de operación de temperatura de escaldado y velocidad encontrados y acordes a los estándares de calidad reglamentados por el INVIMA, fueron para pollo blanco temperatura entre 54 a 58°C y velocidades de 110 a 130 unidades por minuto, mientras en campesino se obtuvieron temperaturas de 51 a 53°C y velocidad de 90 unidades por minuto. En estas condiciones en ambos tipos de pollo se generan menos del 10% de pluma, 1% de grados de sobre-escaldado y porcentajes de despigmentación inferiores al 26%.Este trabalho tem como objetivo estudar o efeito da temperatura e da velocidade da linha de suspensão, na percentagem de penas e despigmentação de aves brancas e camponesas, durante o procedimento de escaldado. Os resultados da temperatura de escaldado e da velocidade obtidos foram consistentes com os padrões de qualidade estabelecidos pelo INVIMA. A temperatura para o frango "branco" foi de 54-58°C e a velocidade de 110 a 130 unidades por minuto, enquanto que a temperatura para o frango "camponês" foi de 51 a 53°C e a velocidade de 90 unidades por minuto. Sob estas condições em ambos tipos de carne de frango são obtidos valores inferiores a 10 de penas, 1% de graus de sobre-escaldado e percentagens de despigmentação menores a 26%.This research aims at analyzing the effect of temperature and speed of the hanging line on the percentage of feather and depigmentation of white and pen chickens during the scalding process. The operation values of scalding temperature of and speed in accordance with the standards of quality stipulated by INVIMA, were 54 to 58°C and 110 to 130 units per minute for white chickens, and 51 to 53°C and 90 units per minute for pen chicken. Under these conditions, less than of 10% of feather, 1% of over scalding

  18. Valoración de bienes rústicos de utilidad pública: La expropiación forzosa por las obras del AVE en la provincia de León

    Directory of Open Access Journals (Sweden)

    María del Pilar Gutiérrez Flórez

    2010-06-01

    Full Text Available Con motivo de la expropiación forzosa de fincas en la provincia de León debido a las obras del Tren de Alta Velocidad, AVE, los propietarios de ochenta y dos fincas de los Ayuntamientos de Villanueva de las Manzanas, Santas Martas y Vega de Infanzones, solicitaron un estudio de valoración alternativo de las mismas para presentarlo, en forma de alegaciones individuales, al Jurado Provincial de Expropiación Forzosa de León, tal y como es su derecho, según la Ley de Expropiación Forzosa, LEF, por su desacuerdo con la oferta de la Entidad Expropiante.En este artículo se presenta el método, se justifican los criterios de valoración, se presentan y analizan los resultados obtenidos y se elaboran las conclusiones a partir de los informes individuales, tras el reconocimiento de los terrenos afectados y su entorno, en base a datos obtenidos bien sea de la propia entidad expropiante bien de la normativa autonómica en vigor en el momento de la expropiación, o bien de la Ley del Suelo 8/2007 en lo referente a la toma de decisiones para el planteamiento de las hipótesis de partida del estudio.Por último, se justifican la tasa del tipo de interés utilizado para la Capitalización de las rentas, en base a normativa vigente o estudios oficiales, y el coeficiente multiplicador del valor de las mismas, según los modelos territoriales de situación respecto a un núcleo urbano, ambos parámetros necesarios para determinar el valor de las parcelas.On the occasion of the necessary expropriation of lands in the province of León due to the works of the High-speed train, AVE (HIGH SPEED TRAIN, the owners of eighty two plots of Villanueva de las Manzanas, Santas Martas and Vega de Infanzones, requested an choice study of valuation of the same ones it to present, in the individual allegations, to the Provincial Juror of Necessary Expropriation of León, as it is your choice, according to the Spanish Law of Necessary Expropriation, LEF, for your

  19. 75 FR 17699 - Quarterly Update to Annual Listing of Foreign Government Subsidies on Articles of Cheese Subject...

    Science.gov (United States)

    2010-04-07

    ..., International Trade Administration, U.S. Department of Commerce, 14th Street and Constitution Ave., NW... Secretary for Import Administration, U.S. Department of Commerce, 14th Street and Constitution Ave., NW..., Malta, Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, and the United Kingdom...

  20. 76 FR 38359 - Quarterly Update to Annual Listing of Foreign Government Subsidies on Articles of Cheese Subject...

    Science.gov (United States)

    2011-06-30

    ..., International Trade Administration, U.S. Department of Commerce, 14th Street and Constitution Ave., NW... Import Administration, U.S. Department of Commerce, 14th Street and Constitution Ave., NW., Washington..., Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, and the United Kingdom. [FR Doc. 2011-16497...

  1. 76 FR 60805 - Quarterly Update to Annual Listing of Foreign Government Subsidies on Articles of Cheese Subject...

    Science.gov (United States)

    2011-09-30

    ... Administration, International Trade Administration, U.S. Department of Commerce, 14th Street and Constitution Ave... Assistant Secretary for Import Administration, U.S. Department of Commerce, 14th Street and Constitution Ave..., Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, and the United Kingdom. [FR Doc...

  2. 76 FR 2346 - Quarterly Update to Annual Listing of Foreign Government Subsidies on Articles of Cheese Subject...

    Science.gov (United States)

    2011-01-13

    ... Administration, International Trade Administration, U.S. Department of Commerce, 14th Street and Constitution Ave... Constitution Ave., NW., Washington, DC 20230. This determination and notice are in accordance with section 702..., Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, and the United Kingdom. [FR Doc...

  3. 77 FR 10478 - Quarterly Update to Annual Listing of Foreign Government Subsidies on Articles of Cheese Subject...

    Science.gov (United States)

    2012-02-22

    ... Constitution Ave. NW., Washington, DC 20230, telephone: (202) 482-3338. SUPPLEMENTARY INFORMATION: Section 702... Constitution Ave., NW., Washington, DC 20230. This determination and notice are in accordance with section 702..., Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, and the United Kingdom. [FR Doc...

  4. 75 FR 35769 - Quarterly Update to Annual Listing of Foreign Government Subsidies on Articles of Cheese Subject...

    Science.gov (United States)

    2010-06-23

    ..., International Trade Administration, U.S. Department of Commerce, 14th Street and Constitution Ave., NW... Import Administration, U.S. Department of Commerce, 14th Street and Constitution Ave., NW., Washington..., Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, and the United Kingdom. [FR Doc. 2010-15214...

  5. 77 FR 34404 - National Register of Historic Places; Notification of Pending Nominations and Related Actions

    Science.gov (United States)

    2012-06-11

    ... St, 703 S. Main St., Little Rock, 12000355 CONNECTICUT Fairfield County Kellogg, Enos, House, 210 Ponus Ave. Ext., Norwalk, 12000356 LeRoy Shirt Company Factory, 11 Chestnut St., Norwalk, 12000357..., Sarasota High School Addition, (Sarasota School of Architecture MPS) 1000 School Ave., S., Sarasota...

  6. Infecção natural por Cryptosporidium sp. em aves domésticas comercializadas em mercados municipais do Estado do Rio de Janeiro Natural infection by Cryptosporidium sp. in domestic fowls sold at local markets

    Directory of Open Access Journals (Sweden)

    Raquel Saucier Gomes

    2009-10-01

    Full Text Available O objetivo do trabalho foi comparar a dinâmica, a ocorrência, a morfometria de oocistos e os períodos patentes de Cryptosporidium sp. em aves domésticas, patos (Anas platyrhynchos, pintos (Gallus gallus e codornas (Coturnix japonica, naturalmente infectadas, provenientes de dois mercados municipais do Estado do Rio de Janeiro, Rio de Janeiro (RJ. Houve diferenças quanto à ocorrência da infecção entre os dois locais e entre pintos e patos, mas não entre codornas. Para a morfometria, foram observadas diferenças estatísticas nas medidas dos diâmetros maior e menor e para o índice morfométrico calculado (P0,05. Na comparação do período de eliminação, patos tiveram um maior período com maiores quantidades de oocistos eliminados. Codornas e pintos apresentaram dinâmica de eliminação semelhante e não houve diferença quanto à concentração de oocistos. Pintos foram mais susceptíveis à infecção seguidos por patos e codornas. Pode-se concluir que a infecção natural por Cryptoporidium sp. foi frequente nas aves estudadas. Patos, pintos e codornas podem ser disseminadores do protozoário em mercados municipais do Rio de Janeiro, RJ. Assim, podem constituir risco de infecção.The objective of the current study was comparing the dynamic and occurrence of Cryptosporidium sp., as well as the morphometry and elimination period of oocysts in naturally infected ducks (Anas platyrhynchos, chickens (Gallus gallus and Japanese quails (Coturnix japonica from two local markets of Rio de Janeiro, RJ. There were significant differences considering the occurrence of infection between the two markets, and also between chickens and ducks, but not among Japanese quails. Also, significant statistical differences were observed in morphometry, considering the major and minor diameters of oocysts and the calculated morphometric index (P0.05. According to the elimination period, ducks eliminated oocysts for a longer period and in a higher number

  7. 77 FR 58096 - Georgia Transmission Corporation: Notice of Intent To Prepare an Environmental Assessment and To...

    Science.gov (United States)

    2012-09-19

    ..., South Madison Ave., Douglas, Georgia 31533; Pearson Public Library, 56 East Bullard Ave., Pearson... will not have a significant effect on the quality of the human environment, RUS will prepare a Finding... of the human environment, the preparation of an Environmental Impact Statement will be required. Any...

  8. 76 FR 38891 - Companies Holding Certificates of Authority as Acceptable Sureties on Federal Bonds and as...

    Science.gov (United States)

    2011-07-01

    ...) BUSINESS ADDRESS: 333 S. WABASH AVE, CHICAGO, IL 60604. PHONE: (312) 822-5000. UNDERWRITING LIMITATION b... IN: Indiana. American Fire and Casualty Company (NAIC 24066) BUSINESS ADDRESS: 9450 Seward Road... ADDRESS: 333 S. WABASH AVE, CHICAGO, IL 60604. PHONE: (312) 822-5000. UNDERWRITING LIMITATION b/: $795,783...

  9. 78 FR 39439 - Companies Holding Certificates of Authority as Acceptable Sureties on Federal Bonds and as...

    Science.gov (United States)

    2013-07-01

    ... Company of Reading, Pennsylvania (NAIC 20427) BUSINESS ADDRESS: 333 S. WABASH AVE, CHICAGO, IL 60604..., UT, VA, WA, WV, WI, WY. INCORPORATED IN: California. American Fire and Casualty Company (NAIC 24066... Carolina. Continental Casualty Company (NAIC 20443) BUSINESS ADDRESS: 333 S. WABASH AVE, CHICAGO, IL 60604...

  10. 78 FR 63218 - Draft Guidance for Industry on Chronic Hepatitis C Virus Infection: Developing Direct-Acting...

    Science.gov (United States)

    2013-10-23

    ...: The Food and Drug Administration (FDA) is announcing the availability of a draft guidance for industry... Evaluation and Research, Food and Drug Administration, 10903 New Hampshire Ave., Bldg. 51, rm. 2201, Silver... and Research, Food and Drug Administration, 10903 New Hampshire Ave., Bldg. 22, rm. 6360, Silver...

  11. 76 FR 72677 - Quarterly Update to Annual Listing of Foreign Government Subsidies on Articles of Cheese Subject...

    Science.gov (United States)

    2011-11-25

    ... Administration, International Trade Administration, U.S. Department of Commerce, 14th Street and Constitution Ave... Constitution Ave. NW., Washington, DC 20230. This determination and notice are in accordance with section 702(a..., Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, and the United Kingdom. [FR Doc...

  12. 77 FR 32567 - Quarterly Update to Annual Listing of Foreign Government Subsidies on Articles of Cheese Subject...

    Science.gov (United States)

    2012-06-01

    ..., International Trade Administration, U.S. Department of Commerce, 14th Street and Constitution Ave. NW... Constitution Ave. NW., Washington, DC 20230. This determination and notice are in accordance with section 702(a..., Netherlands, Poland, Portugal, Romania, Slovakia, Slovenia, Spain, Sweden, and the United Kingdom. [FR Doc...

  13. An Investigation of an Irradiated Fuel Pin by Measurement of the Production of Fast Neutrons in a Thermal Column and by Pile Oscillation Technique

    International Nuclear Information System (INIS)

    Gustavsson, Veine

    1968-05-01

    A fuel pin irradiated to about 3400 MWd/tU from the Halden reactor has been investigated by a measurement of the production of fast neutrons in a thermal column and by pile oscillator technique in the central channel of the reactor R1. Calibration was made by using samples with different U 235 enrichments. The thermal column experiment gives the quantity ave(νΣ f ) (average in the thermal column spectrum) for the Halden sample. Σ f is the macroscopic fission cross section and ν is the number of fast neutrons produced per fission. The result of the oscillator measurements is a value of ave(Σ a ) - w ave(Σ f ) (average in the central channel spectrum) for the irradiated sample, w is the importance of a fast neutron relative to a thermal one and ave(Σ a ) is the macroscopic absorption cross section. The results from both the experiments have been compared with values calculated by the REBUS code and the agreement was good

  14. Sexual differences in post-hatching Saunders's gulls: size, locomotor activity, and foraging skill.

    Science.gov (United States)

    Yoon, Jongmin; Lee, Seung-Hee; Joo, Eun-Jin; Na, Ki-Jeong; Park, Shi-Ryong

    2013-04-01

    Various selection pressures induce the degree and direction of sexual size dimorphism in animals. Selection favors either larger males for contests over mates or resources, or smaller males are favored for maneuverability; whereas larger females are favored for higher fecundity, or smaller females for earlier maturation for reproduction. In the genus of Larus (seagulls), adult males are generally known to be larger in size than adult females. However, the ontogeny of sexual size dimorphism is not well understood, compared to that in adults. The present study investigates the ontogeny of sexual size dimorphism in Saunders's gulls (Larus saundersi) in captivity. We artificially incubated fresh eggs collected in Incheon, South Korea, and measured body size, locomotor activity, and foraging skill in post-hatching chicks in captivity. Our results indicated that the sexual differences in size and locomotor activity occurred with the post-hatching development. Also, larger males exhibited greater foraging skills for food acquisition than smaller females at 200 days of age. Future studies should assess how the adaptive significance of the sexual size dimorphism in juveniles is linked with sexual divergence in survival rates, intrasexual contests, or parental effort in sexes.

  15. Aditivos fitogênicos e glutamina mais ácido glutâmico na dieta de frangos desafiados com coccidiose

    Directory of Open Access Journals (Sweden)

    Everton Moreno Muro

    2015-06-01

    Full Text Available O objetivo deste trabalho foi avaliar a suplementação da dieta com aditivos fitogênicos (AFs e glutamina mais ácido glutâmico (Gln/Glu como alternativa aos antibióticos melhoradores de desempenho e anticoccidianos (AMD/AC, sobre o desempenho e rendimento de carcaça e partes de frangos de corte desafiados com Eimeria acervulina. Foram distribuídos de maneira inteiramente casualizada 600 pintos machos em seis tratamentos e quatro repetições: dieta controle (DC; DC + Vacina de coccidiose; DC+AMD/AC; DC+Gln/Glu; DC+AFs; DC+Gln/Glu+AFs. Aos 21 dias de idade, as aves do tratamento AMD/AC apresentaram maior ganho de peso em relação às aves dos tratamentos DC+Vacina e DC+Gln/Glu, não diferindo dos demais tratamentos. A melhor conversão alimentar (CA foi observada para aves do tratamento AMD/AC em relação às aves dos tratamentos DC+Vacina, DC+AFs e DC+Gln/Glu + AFs. Aos 42 dias de idade as aves do tratamento DC+AFs apresentaram maior consumo de ração em relação às aves do tratamento DC+Gln/Glu, não diferindo dos demais tratamentos. Não houve diferença para as variáveis de rendimento de carcaça e partes. De modo geral, os melhores resultados de desempenho ocorreram para as aves dos tratamentos contendo AFs e AMD/AC. A adição de aditivos fitogênicos, associados ou não à glutamina mais ácido glutâmico, na dieta de frangos de corte desafiados com Eimeria acervulina, pode substituir o antibiótico melhorador de desempenho e anticoccidiano. Os dados obtidos foram analisados pelo procedimento GLM do programa estatístico SPSS® e as médias foram comparadas pelo teste de Tukey a 5% de probabilidade.

  16. Plaadid / Ave Randviir

    Index Scriptorium Estoniae

    Randviir, Ave, 1981-

    2005-01-01

    Uutest heliplaatidest "Deep", Frank Sinatra, Tommy Dorsey Orchestra "The Essential Sinatra With The Tommy Dorsey Orchestra", Michael Buble "Caught In The Act", shakira "Oral Fixation", Queen "A Night At The Opera", Millionaire "Paradisiac", Simon Webbe "Sanctuary"

  17. Kontserdikaja / Ave Sopp

    Index Scriptorium Estoniae

    Sopp, Ave

    2003-01-01

    Kontserdist "Tuletrummi tempel" Pärnu kontserdimajas 30. juulil Peeter Vähi kujundatud festivali "Klaaspärlimäng" raames, esitlusel Terry Rile' teos "Pärsia dervishid" (löökpillidele ja orelile) ning Peeter Vähi kantaat "Roheline Tara"

  18. Plaadid / Ave Randviir

    Index Scriptorium Estoniae

    Randviir, Ave, 1981-

    2007-01-01

    Uutest heliplaatidest Mogwai "Zidane. A 21st century portrait", Diskreetse Mango Trio "Prigadi-pragadi", Mummer "Soulorganismstate", Janet Jackson "20 Y.O.", Gruppo Jazz Marca "Mitteleuropa", Konsorten TM "Wir und die Anderen", Josh Groban "Awake"

  19. Plaadid / Ave Randviir

    Index Scriptorium Estoniae

    Randviir, Ave, 1981-

    2006-01-01

    Uutest heliplaatidest The Flaming Lips "At War With The Mystics", "Hed Kandi: Twisted Disco", The Streets "The Hardest Way To Make An Easy Living", Psychoterror "Anarhia ja dekadents", Slide-Fifty "Reach Out", LL Cool J "Todd Smith", Jewel "Goodbye Alice in Wonderland"

  20. Depredación de aves acuáticas por la nutria neotropical (Lontra longicaudis annectens, en el río Yaqui, Sonora, México Aquatic bird predation by neotropical river otter (Lontra longicaudis annectens, at Rio Yaqui, Sonora, Mexico

    Directory of Open Access Journals (Sweden)

    Juan Pablo Gallo-Reynoso

    2008-06-01

    Full Text Available Se registra la depredación de aves acuáticas por la nutria neotropical (L. longicaudis annectens en el río Yaqui, Sonora. Se colectaron e identificaron 25 cráneos, porciones de esqueleto postcraneal y plumas de aves encontrados en los comederos de las nutrias; las especies identificadas fueron el cormorán neotropical (Phalacrocorax brasilianus con 16 individuos, el pato de collar (Anas platyrhynchos diazi, 4 individuos; la garza blanca (Ardea alba, 3 individuos; el huaco de corona amarilla (Nyctanassa violacea y el pelícano café (Pelecanus occidentalis, ambos con 1 individuo. En los peces se encontró la tilapia del género Oreochromis. Probablemente los hábitos alimenticios de esta especie responden a la estacionalidad y al consumo de presas más disponibles en el hábitat. Estos registros confirman que las nutrias de río son depredadores oportunistas cuya dieta tiene una amplio rango de uso de especies de los ambientes riparios, además dichos registros son una razón más para considerar la nutria neotropical como especie sombrilla para la conservación de ecosistemas completos, ya que su presencia es un indicador de alta disponibilidad energética y de alta biodiversidad.We report the predation of aquatic birds by neotropical river otters (L. longicaudis annectens at Río Yaqui, Sonora. As many as 25 skulls, post-cranial skeletons and feathers were found at river otter feeding sites. The neotropical cormorant (Phalacrocorax brasilianus was the most predated bird with 16 individuals, followed by Mexican mallard (Anas platyrhynchos diazi with 4 individuals, great egret (Ardea alba with 3 individuals, yellow-crowned night-heron (Nyctanassa violacea, and brown pelican (Pelecanus occidentalis, both with 1 individual. With respect to fish, the tilapia Oreochromis, was the only species found in scats. Neotropical river otter feeding habits were associated with food availability at different seasons of the year. These records show that

  1. 75 FR 38191 - Companies Holding Certificates of Authority as Acceptable Sureties on Federal Bonds and as...

    Science.gov (United States)

    2010-07-01

    ..., Pennsylvania (NAIC 20427) BUSINESS ADDRESS: 333 S. WABASH AVE, CHICAGO, IL 60604. PHONE: (312) 822-5000.... INCORPORATED IN: Indiana. American Fire and Casualty Company (NAIC 24066) BUSINESS ADDRESS: 9450 Seward Road... Casualty Company (NAIC 20443) BUSINESS ADDRESS: 333 S. WABASH AVE, CHICAGO, IL 60604. PHONE: (312) 822-5000...

  2. 76 FR 55702 - National Register of Historic Places; Notification of Pending Nominations and Related Actions

    Science.gov (United States)

    2011-09-08

    ..., MPS) Roughly bounded by Terry St., Ward Ave., Ellis St. & Darby Ave., Fort Smith, 11000693 Washington... Washington County Smith, E.L., Roundhouse Granite Shed, 23 Burnham Meadows, Barre, 11000704 Request for REMOVAL has been made for the following resources: ARKANSAS Howard County Boyd, Adam, House E. of Center...

  3. 40 CFR 262.56 - Annual reports.

    Science.gov (United States)

    2010-07-01

    ... APPLICABLE TO GENERATORS OF HAZARDOUS WASTE Exports of Hazardous Waste § 262.56 Annual reports. (a) Primary...), Environmental Protection Agency, 1200 Pennsylvania Ave., NW., Washington, DC 20460. Hand-delivered reports... St. and Pennsylvania Ave., NW., Washington, DC 20004. [51 FR 28682, Aug. 8, 1986, as amended at 56 FR...

  4. Questioning Mechanisms During Tutoring, Conversation, and Human-Computer Interaction

    Science.gov (United States)

    1993-06-01

    Robert J. Seidel Dept. Psicologia Basica OERI US Army Research Institute Univ. Barcelona 555 New Jersey Ave., NW 5001 Eisenhower Ave. 08028 Barcelona...having a different set of random starting weights in the weight space and running the simulation 10 times. As a crude, but conservative estimate, a GOP

  5. 78 FR 44485 - Implementation of the 2008 National Ambient Air Quality Standards for Ozone: State Implementation...

    Science.gov (United States)

    2013-07-24

    ... Headquarters Library, Room Number 3334 in the EPA West Building, located at 1301 Constitution Ave. NW... homepage at http://www.epa.gov/epahome/dockets.htm . For additional instructions on submitting comments, go... Library, Room Number 3334 in the EPA West Building, located at 1301 Constitution Ave. NW., Washington, DC...

  6. 4D Proton treatment planning strategy for mobile lung tumors

    International Nuclear Information System (INIS)

    Kang Yixiu; Zhang Xiaodong; Chang, Joe Y.; Wang He; Wei Xiong; Liao Zhongxing; Komaki, Ritsuko; Cox, James D.; Balter, Peter A.; Liu, Helen; Zhu, X. Ronald; Mohan, Radhe; Dong Lei

    2007-01-01

    Purpose: To investigate strategies for designing compensator-based 3D proton treatment plans for mobile lung tumors using four-dimensional computed tomography (4DCT) images. Methods and Materials: Four-dimensional CT sets for 10 lung cancer patients were used in this study. The internal gross tumor volume (IGTV) was obtained by combining the tumor volumes at different phases of the respiratory cycle. For each patient, we evaluated four planning strategies based on the following dose calculations: (1) the average (AVE) CT; (2) the free-breathing (FB) CT; (3) the maximum intensity projection (MIP) CT; and (4) the AVE CT in which the CT voxel values inside the IGTV were replaced by a constant density (AVE R IGTV). For each strategy, the resulting cumulative dose distribution in a respiratory cycle was determined using a deformable image registration method. Results: There were dosimetric differences between the apparent dose distribution, calculated on a single CT dataset, and the motion-corrected 4D dose distribution, calculated by combining dose distributions delivered to each phase of the 4DCT. The AVE R IGTV plan using a 1-cm smearing parameter had the best overall target coverage and critical structure sparing. The MIP plan approach resulted in an unnecessarily large treatment volume. The AVE and FB plans using 1-cm smearing did not provide adequate 4D target coverage in all patients. By using a larger smearing value, adequate 4D target coverage could be achieved; however, critical organ doses were increased. Conclusion: The AVE R IGTV approach is an effective strategy for designing proton treatment plans for mobile lung tumors

  7. Refratariedade das galinhas ao "Trypanosoma (Schizotrypanum Cruzi" III - dissociação dos fenômenos da refratariedade e da lise dos epimastigotas pelo soro das aves The refractory state of birds towards the "Trypanosoma (Schizotrypanum cruzi". III - The dissociation of the phenomena of the refractory state and the lysis of the epimastigotes by chicken sera

    Directory of Open Access Journals (Sweden)

    F. Nery-Guimarães

    1974-01-01

    Full Text Available Há muito tempo é sabido serem as aves refratárias ao "T. (S. cruzi". Em trabalhos anteriores verificou-se que nas galinhas pode-se obter infecções "in ovo" diagnosticáveis até o 21º de incubação, porém, logo após o nascimento os pintos mostram-se refratários ao parasito, que é destruído no ponto de inoculação. Neste trabalho verificou-se que tripomastigotas injetados diretamente no sangue, podem ser esporadicamente encontrados até 1h depois. Verificou-se também que galinhas bursectomizadas, com associação de testosterona "in ovo" e ciclofosfamida nos 4 primeiros dias de vida permanecem refratárias. Entretanto, o soro dessas aves perde a capacidade lítica que o soro das aves normais possui para os epimastigotas do "T. (S. cruzi", pela qual são responsáveis as gama-globulinas séricas, conforme foi verificado após o fracionamento do soro em coluna de DEAE-Sefádex A50. A dissociação dos 2 fenômenos, mostra que a capacidade lítica pode ser atribuída a um "anticorpo natural" - uma vez que é eliminada ou grandemente diminuída com a supressão do sistema imunitário bursa- dependente - porém, o mesmo não se pode concluir quanto à refratariedade. Esta, provavelmente, deve estar relacionada ao próprio metabolismo celular após o nascimento.The refractory state of birds to the "T (S cruzi" is well known since long ago. In previous papers it was possible to observe in chicks, infection "in ovo", still present at the last dat of incubation. Nevertheless after hatching the chicks become refractory to the parasite. The destruction of the parasites takes place in the skin at the inoculation point. Throughout these studies the authors verified that the trypomastigotes forms disappear within an hour, after being injected directly into the blood stream. Bursectomized chicks by treatment with testosterone "in ovo" plus cyclophosphamide in the first four days of life, show also the refractory condition, but their sera lack the

  8. Padrões de interações mutualísticas entre espécies arbóreas e aves frugívoras em uma comunidade de Restinga no Parque Estadual de Itapuã, RS, Brasil Patterns of mutualistic interactions between tree species and frugivorous birds in a restinga community at Itapuã State Park, Rio Grande do Sul, Brazil

    Directory of Open Access Journals (Sweden)

    Adriano Scherer

    2007-03-01

    Full Text Available Padrões de interação entre aves frugívoras e espécies arbóreas, com suas variações sazonais, foram determinados em uma mata de Restinga. Foram feitas observações visuais e capturas da avifauna, ao longo de um ano, estimando-se a conectância do sistema mutualístico e o índice de importância das espécies. Também foi elaborada a rede de interações do sistema e feita a análise da variação das interações entre as estações do ano. Foram registradas 18 espécies animais e 11 vegetais interagindo, com uma conectância de 25,3%. Turdus amaurochalinus e T. rufiventris apresentaram maior número de visitas, interagiram com a maioria das espécies arbóreas e tiveram o maior índice de importância, sendo caracterizadas como as principais dispersoras em potencial. Ocotea pulchella e Myrsine spp. foram registradas com os maiores números de eventos de consumo de frutos pelas aves. No entanto, Ficus organesis interagiu com mais espécies dispersoras, além de ter a maior importância na dieta das aves. Observaram-se variações na quantidade de eventos de frugivoria ao longo do ano, com um aumento significativo na primavera. Além disso, verificou-se um aumento nas espécies frugívoras durante a primavera e verão, bem como no número de espécies arbóreas visitadas nessas estações.Interaction patterns between frugivorous birds and tree species, with seasonal variations, were determined in a restinga forest. Visual observations and bird captures were performed throughout a year, estimating the connectance of the mutualistic system and the importance index of species. The interaction network of the system was also worked out and seasonal variation in these interactions was analyzed. Eighteen animal species and 11 tree species were recorded as interacting, with a connectance of 25.3%. Turdus amaurochalinus and T. rufiventris had the highest number of visits, interacted with most tree species and had the highest importance index

  9. Avian cholera causes marine bird mortality in the Bering Sea of Alaska

    Science.gov (United States)

    Bodenstein, Barbara L.; Kimberlee Beckmen,; Gay Sheffield,; Kathy Kuletz,; Van Hemert, Caroline R.; Berlowski-Zier, Brenda M.; Shearn-Bochsler, Valerie I.

    2015-01-01

    The first known avian cholera outbreak among wild birds in Alaska occurred during November 2013. Liver, intestinal, and splenic necrosis consistent with avian cholera was noted, and Pasteurella multocida serotype 1 was isolated from liver and lung or spleen in Crested Auklets (Aethia cristatella), Thick-billed Murres (Uria lomvia), Common Eider (Somateria mollissima), Northern Fulmars (Fulmarus glacialis), and Glaucous-winged Gulls (Larus glaucescens).

  10. Incidence de la hausse des taxes sur le tabac et du prix des produits ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    La recherche destinée aux responsables des politiques de l'Ukraine, de la Russie et du Bélarus mettra en évidence la façon dont les mesures de taxation des produits du tabac peuvent contribuer à l'atteinte d'objectifs en matière de santé ... New website will help record vital life events to improve access to services for all.

  11. Some observations on Seabirds breeding in the Tsitsikamma Coastal National Park.

    Directory of Open Access Journals (Sweden)

    R. J. M Crawford

    1983-12-01

    Full Text Available In 1980 and 1981 more than 50 pairs of kelp gulls Lams dominicanus, 70 of Cape cormorants Phalacrocorax capensis and 20 of whitebreasted cormorants P. carbo nested in the Tsitsikamma Coastal National Park. Kelp gulls were breeding in the Park in the mid 1960's but no records could be found of breeding by Cape cormorants prior to 1980. The earliest record for nesting by whitebreasted cormorants was 1971 and the population apparently increased in the late 1970's. Small numbers of African black oystercatchers Haematopus moquini nested in the park in 1980 and 1981. Brown mussels Perna perna and limpets Patella spp. dominated their hardshelled diet. Whereas oystercatchers at St Croix Island fed mainly on organisms from the mid intertidal region, those at Tsitsikamma appear to have favoured molluscs from the lower tidal range.

  12. Infecção por Salmonella typhimurium de origem hídrica em garça gigante (Casmerodius albus egretta, em sua vida livre no Estado do Rio de Janeiro

    Directory of Open Access Journals (Sweden)

    Maria do Amparo Queiroz de Freitas

    1977-10-01

    Full Text Available De uma mortandade de garças de vida livre, no Estado do Rio de Janeiro, Brasil, foi isolada Salmonella typhimurium por hemocultura de material proveniente de uma ave que se mostrava enferma e que à necrópsia não apresentavam lesões a na tomopa tológicas. A Salmonella typhimurium foi também isolada de água de um lago existente no Jardim Zoológico do Rio de Janeiro, onde as aves tinham acesso permanente. Durante a mortandade das aves foi observada uma hepatite necrótica na qual havia colônias bacterianas, tesões atribuídas a esta salmonelose.

  13. Hemoparásitos aviares de los llanos orientales colombianos

    Directory of Open Access Journals (Sweden)

    Oscar A. Rodríguez

    2000-07-01

    Full Text Available Un total de 315 aves, pertenecientes a 75 (23 familias de Villavicencio y San Miguel (Meta, Colombia fueron examinadas para hematozoarios, donde 50 aves (15.9% presentaron uno o mas hemoparasitos. Microfilaria fue el hematozoario más encontrado, seguido numéricamente por: especies de Haemoproteus, Plasmodium y Trypanosoma y finalmente par un ejemplar de Hepatozoon. El estudio incluye 15 nuevos registros hospedero-parasito para el mundo y 18 para Colombia y 8 especies de aves fueron examinadas para hemoparasitos por primera vez. La baja prevalencia registrada por este estudio coincide con los estudios para otras zonas del Neotrópico y Colombia.

  14. 78 FR 77711 - National Register of Historic Places; Notification of Pending Nominations and Related Actions

    Science.gov (United States)

    2013-12-24

    ... Cook County Bush Temple of Music, 100 W. Chicago Ave., 800 N. Clark St., Chicago, 13001001 Stony Island... Independent city Waverly Main Street Historic District, Roughly bounded by E. 29th & E. 35th Sts., Old York Rd., Greenmount Ave., Baltimore (Independent City), 13001020 Nebraska Madison County Stubbs--Ballah House, 1000...

  15. Effects of human disturbance on a burrow nesting seabird Efectos de la presencia de humanos en aves marinas que anidan en madrigueras

    Directory of Open Access Journals (Sweden)

    Yuri V. Albores-Barajas

    2011-12-01

    Full Text Available During 2004, we followed 72 natural burrows to determine the effects of disturbance on breeding success of Cassin's auklets (Ptychoramphus aleuticus. We used distance from a human settlement or path in the analysis of disturbance. Birds whose burrows were closer to the path or the village had a higher rate of nest abandonment and lower breeding success compared to birds nesting further away from the path or the village. Also, older and more experienced individuals represented a larger proportion of the breeding population on less disturbed areas than on highly disturbed ones, probably as older individuals tend to arrive earlier at the breeding grounds, and failed breeders may change burrow sites to move away from disturbance. P. aleuticus are adversely affected by human activity at colonies even if birds are not handled and burrows are not opened, and this has implications for conservation, and planning of ecotourism. On the long term, this can have negative consequences for this species and others with similar characteristics.Durante el 2004 seguimos 72 nidos de la alcuela (Ptychoramphus aleuticus para determinar los efectos de disturbio en el éxito reproductivo. Utilizamos la distancia del nido a áreas asentamientos humanos o al camino como medidas de disturbio. Los nidos que estaban más cerca de los asentamientos o del camino tuvieron una tasa de abandono mayor y un éxito reproductivo menor en comparación con los nidos que estaban más alejados de las fuentes de disturbio. También observamos que en las zonas menos expuestas la proporción de adultos, con mayor experiencia, era más alta, posiblemente porque los individuos con mayor experiencia llegan antes a la zona de anidación. Las alcuelas son afectadas negativamente por la presencia de los humanos y sus actividades, aunque las aves no entren en contacto directo con los humanos. A largo plazo, esto puede acarrear consecuencias graves para esta especie y otras con caracter

  16. Patrones de distribución, abundancia y riqueza de especies de la avifauna terrestre de la isla de La Palma (islas Canarias

    Directory of Open Access Journals (Sweden)

    Carrascal, L. M.

    2008-12-01

    Full Text Available We estimate the population size and density, habitat preferences, habitat breadth and probable population trends in the last 25-15 years of the diurnal terrestrial bird species breeding in La Palma island (Canary islands. Data were obtained in a large extensive census program carried out during the 2007 nesting period using line transects that allowed detectability estimations. We also explored patterns of species richness both at inter-habitat and local scale. Local species richness (species per 0.5 km transects showed an important geographical component, increasing from south to north, from west to east, and reaching maximum values at altitudes around 600-1,000 m a.s.l. It was also positively related to vegetation development (specially in the herbaceous and shrub layer, and negatively associated with urbanization and agriculture. Total bird density reached the highest figures in the ‘monteverde’ (laurel and heath forests ca. 650 aves/km2, and in the transition pinewoods-laurel forests (509 aves/km2, while the lowest figures were recorded in high altitude shrublands (153 aves/km2 and recent lava fields (58 aves/km2. The bird species with lower population sizes are Falco [peregrinus] pelegrinoides, Burhinus oedicnemus distinctus, Upupa epops, Carduelis carduelis, Miliaria calandra and Petronia petronia, while the last five species have undergone more negative population trends in the last 15-25 years.

    Se estiman los niveles poblacionales, las densidades ecológicas, los principales patrones de preferencia de hábitat, las posibles tendencias demográficas habidas en los últimos 25 y 15 años, y el estatus de conservación actual de las especies de aves terrestres diurnas reproductoras en la isla de La Palma. Los datos fueron obtenidos durante el periodo reproductor de 2007, utilizando transectos lineales. En total se efectuaron 437 transectos de 0,5 km repartidos por toda la

  17. Exigência de metionina + cistina para frangas de reposição na fase cria de sete a 12 semanas de idade

    Directory of Open Access Journals (Sweden)

    P. D'Agostini

    2012-12-01

    Full Text Available Determinou-se a exigência de metionina + cistina para frangas de sete a 12 semanas de idade e verificou-se seu efeito sobre a fase de postura. O experimento foi dividido em duas fases, de cria e de produção, esta de 22 a 33 semanas de idade. Na primeira fase, utilizaram-se 640 aves - 50% Lohmann LSL e 50% Lohmann Brown - com sete a 12 semanas de idade, distribuídas em delineamento inteiramente ao acaso, em esquema fatorial 5x2 (porcentagem de met+cis e linhagem, com quatro repetições e 16 aves por repetição. As porcentagens de met+cis total estudadas foram 0,471; 0,541; 0,611; 0,681 e 0,751%. Ao atingirem 22 semanas de idade, 240 aves foram utilizadas para verificar o efeito residual das dietas fornecidas na fase de cria. A dieta fornecida nesta fase foi igual para todas as aves. As exigências de metionina + cistina para aves de reposição, leves e semipesadas, no período de sete a 12 semanas de idade, foram de 0,710 % de met+cis total (0,639% de met+cis digestível e 0,706% de met+cis total (0,635% de met+cis digestível, respectivamente.

  18. Análise comparativa da assembléia de aves em dois remanescentes florestais no interior do Estado de São Paulo, Brasil Comparative analysis of birds community in two forested fragments in the State of São Paulo, Brazil

    Directory of Open Access Journals (Sweden)

    Reginaldo J. Donatelli

    2007-06-01

    Full Text Available Realizou-se o levantamento quantitativo e qualitativo da comunidade de aves de dois fragmentos de floresta estacional semidecídua no interior do estado de São Paulo de julho de 2004 a julho de 2005. Para o estudo quantitativo utilizou-se da metodologia de Pontos de Escuta. Foram analisados os índices de diversidade e de freqüência de ocorrência dessa comunidade. O levantamento qualitativo registrou 181 espécies na Fazenda Rio das Pedras - FRP (Itapetininga, 350 ha e 126 espécies na Fazenda Santa Maria II - FSM (Buri, 480 ha, enquanto que o levantamento quantitativo registrou a presença de 73 espécies em 988 contatos e 64 espécies em 1019 contatos para FRP e FSM, respectivamente. O índice pontual de abundância (IPA variou de 0,01 (1 contato a 1,32 (132 contatos, para FRP e na FSM variou entre 0,01 (1 contato a 0,97 (97 contatos. A diversidade do fragmento da FRP foi de H’ = 3,04 e na FSM de H’ = 2,85 onde a eqüitatividade em ambas áreas foi de 0,91. A comunidade de aves nos fragmentos estudados mostrou o mesmo padrão encontrado em outros fragmentos de floresta estacional semidecídua de tamanhos relativos. As categorias alimentares mais representativas nos dois remanescentes foram insetívoras (53% na FSM e 50% na FRP e frugívoras (23% na FSM e 26% na FRP. Dentre os insetívoros, destacaram-se as famílias Tyrannidae na FSM e Thamnophilidae na FRP. Tanto na FSM como na FRP os insetívoros de sub-bosque foram mais representativos (53% e 51,4% respectivamente, seguidos pelos frugívoros de sub-bosque (50% na FSM e frugívoros de copa (52,6% na FRP. A importância do estudo de comunidade de aves esta ligada à elaboração do plano de manejo e conservação das áreas naturais.Qualitative and quantitative survey of bird community were performed in two distinct semideciduous forest in the interior of the State of São Paulo from July 2004 to July 2005. Point Counts were used for the quantitative survey followed by diversity and

  19. Aspergillosis in Larus cachinnans micaellis: survey of eight cases.

    Science.gov (United States)

    Nardoni, Simona; Ceccherelli, Renato; Rossi, Giacomo; Mancianti, Francesca

    2006-05-01

    Avian aspergillosis is reported in several avian species, with Aspergillus fumigatus as the main aetiological agent. Predisposing factors such as starvation, thermal stress, migratory stress, primary infectious disease or toxicosis may play a role. Eight cases of disseminated aspergillosis in free ranging seagulls sheltered at C.R.U.M.A. (Centro Recupero Uccelli Marini e Acquatici, Livorno, Italy) with different clinical histories are presented. The infection was demonstrated by cultural and histological methods from lesions of all birds, and the presence of airborne A. fumigatus viable elements ranging from 450 to 525 CFU/m(3) inside and outside the shelter by means of a surface air sampler (SAS) Super-90 was also assessed. The role of this fungal species as an opportunistic factor in the captivity of seagulls is considered and some control measures, such as a clean and stress free environment and the use of antifungal drugs are suggested.

  20. Fluid intelligence allows flexible recruitment of the parieto-frontal network in analogical reasoning.

    Science.gov (United States)

    Preusse, Franziska; van der Meer Elke; Deshpande, Gopikrishna; Krueger, Frank; Wartenburger, Isabell

    2011-01-01

    Fluid intelligence is the ability to think flexibly and to understand abstract relations. People with high fluid intelligence (hi-fluIQ) perform better in analogical reasoning tasks than people with average fluid intelligence (ave-fluIQ). Although previous neuroimaging studies reported involvement of parietal and frontal brain regions in geometric analogical reasoning (which is a prototypical task for fluid intelligence), however, neuroimaging findings on geometric analogical reasoning in hi-fluIQ are sparse. Furthermore, evidence on the relation between brain activation and intelligence while solving cognitive tasks is contradictory. The present study was designed to elucidate the cerebral correlates of geometric analogical reasoning in a sample of hi-fluIQ and ave-fluIQ high school students. We employed a geometric analogical reasoning task with graded levels of task difficulty and confirmed the involvement of the parieto-frontal network in solving this task. In addition to characterizing the brain regions involved in geometric analogical reasoning in hi-fluIQ and ave-fluIQ, we found that blood oxygenation level dependency (BOLD) signal changes were greater for hi-fluIQ than for ave-fluIQ in parietal brain regions. However, ave-fluIQ showed greater BOLD signal changes in the anterior cingulate cortex and medial frontal gyrus than hi-fluIQ. Thus, we showed that a similar network of brain regions is involved in geometric analogical reasoning in both groups. Interestingly, the relation between brain activation and intelligence is not mono-directional, but rather, it is specific for each brain region. The negative brain activation-intelligence relationship in frontal brain regions in hi-fluIQ goes along with a better behavioral performance and reflects a lower demand for executive monitoring compared to ave-fluIQ individuals. In conclusion, our data indicate that flexibly modulating the extent of regional cerebral activity is characteristic for fluid intelligence.

  1. Fluid intelligence allows flexible recruitment of the parieto-frontal network in analogical reasoning.

    Directory of Open Access Journals (Sweden)

    Franziska ePreusse

    2011-03-01

    Full Text Available Fluid intelligence is the ability to think flexibly and to understand abstract relations. People with high fluid intelligence (hi-fluIQ perform better in analogical reasoning tasks than people with average fluid intelligence (ave-fluIQ. Although previous neuroimaging studies reported involvement of parietal and frontal brain regions in geometric analogical reasoning (which is a prototypical task for fluid intelligence, however, neuroimaging findings on geometric analogical reasoning in hi-fluIQ are sparse. Furthermore, evidence on the relation between brain activation and intelligence while solving cognitive tasks is contradictory. The present study was designed to elucidate the cerebral correlates of geometric analogical reasoning in a sample of hi-fluIQ and ave-fluIQ high school students. We employed a geometric analogical reasoning task with graded levels of task difficulty and confirmed the involvement of the parieto-frontal network in solving this task. In addition to characterizing the brain regions involved in geometric analogical reasoning in hi-fluIQ and ave-fluIQ, we found that blood oxygenation level dependency (BOLD signal changes were greater for hi-fluIQ than for ave-fluIQ in parietal brain regions. However, ave-fluIQ showed greater BOLD signal changes in the anterior cingulate cortex and medial frontal gyrus than hi-fluIQ. Thus, we showed that a similar network of brain regions is involved in geometric analogical reasoning in both groups. Interestingly, the relation between brain activation and intelligence is not mono-directional, but rather, it is specific for each brain region. The negative brain activation–intelligence relationship in frontal brain regions in hi-fluIQ goes along with a better behavioral performance and reflects a lower demand for executive monitoring compared to ave-fluIQ individuals. In conclusion, our data indicate that flexibly modulating the extent of regional cerebral activity is characteristic for

  2. DINÁMICA SEROLÓGICA DEL VIRUS DE BRONQUITIS INFECCIOSA EN UNA GRANJA DE POLLO DE ENGORDE DEL DEPARTAMENTO DE CUNDINAMARCA

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    DC Álvarez

    2009-01-01

    Full Text Available El virus de bronquitis infecciosa (IBV causa una enfermedad altamente contagiosa, distribuida mundialmente, que conlleva graves pérdidas económicas. En algunas oportunidades se asocia con otras entidades como los virus de las enfermedades de Gumboro y de Newcastle, Mycoplasma gallisepticum y Escherichia coli. La alta variabilidad genética del virus ha generado una gran cantidad de cepas virales con diferentes cuadros clínicos. El objetivo del trabajo fue evaluar la dinámica de anticuerpos del IBV en aves vacunadas y no vacunadas contra IBV, alojadas en una explotación de pollo de engorde donde se detectó el agente por RT-PCR, en Fusagasugá, Colombia, y aves vacunadas en semiaislamiento en Bogotá. Para esto se organizaron 3 grupos de aves (Ross 308 de 1 día de edad (44 aves/grupo, las cuales fueron vacunadas con un virus vivo atenuado, cepa Massachusetts H120, y se evaluó la respuesta inmune a través de la prueba de Elisa. Desde el primer día hasta el día 24 de edad se observó una disminución progresiva de los títulos de anticuerpos en los tres grupos, aunque en las aves vacunadas y no vacunadas mantenidas en granja se observaron niveles de anticuerpos superiores al grupo en condiciones de semiaislamiento. A partir del día 28 en las aves alojadas en campo se incrementaron levemente los títulos hasta final de ciclo. El leve aumento en el nivel de anticuerpos puede ser consecuencia de exposición al virus vacunal que generó reversión de patogenicidad, persistencia viral o una exposición tardía al virus de campo.

  3. An Investigation of an Irradiated Fuel Pin by Measurement of the Production of Fast Neutrons in a Thermal Column and by Pile Oscillation Technique

    Energy Technology Data Exchange (ETDEWEB)

    Gustavsson, Veine

    1968-05-15

    A fuel pin irradiated to about 3400 MWd/tU from the Halden reactor has been investigated by a measurement of the production of fast neutrons in a thermal column and by pile oscillator technique in the central channel of the reactor R1. Calibration was made by using samples with different U 235 enrichments. The thermal column experiment gives the quantity ave({nu}{sigma}{sub f}) (average in the thermal column spectrum) for the Halden sample. {sigma}{sub f} is the macroscopic fission cross section and {nu} is the number of fast neutrons produced per fission. The result of the oscillator measurements is a value of ave({sigma}{sub a}) - w ave({sigma}{sub f}) (average in the central channel spectrum) for the irradiated sample, w is the importance of a fast neutron relative to a thermal one and ave({sigma}{sub a}) is the macroscopic absorption cross section. The results from both the experiments have been compared with values calculated by the REBUS code and the agreement was good.

  4. Una colonia reproductiva de la Golondrina de la Tempestad Peruana, Oceanodroma tethys kelsalli (Lowe 1925, en la Isla Santa, Perú

    Directory of Open Access Journals (Sweden)

    Liliana Ayala

    2013-03-01

    Full Text Available Las áreas reproductivas de la Golondrina de la tempestad Peruana eran desconocidas hasta hace poco. Esta especie anida en la costa central del Perú, en las islas: Ferrol, Chao y Corcovado. Reportamos un área reproductiva para esta ave marina en la isla Santa. Localizamos un total de 407 nidos activos, incluyendo 92 (22% con huevos y 7 (8% con polluelos. La mayor parte de las aves reproductivas se hallaron cerca de la casa al este de la isla, en el sur y suroeste, donde se registraron aves guaneras y altas cantidades de garrapatas pocas golondrinas fueron halladas. En el sur y suroeste de la isla la humedad contribuye a que algunas pircas estén cubiertas de musgos y algas, en estas paredes no se hallaron aves anidando. Es posible que existan otras áreas de reproducción en la costa peruana. Estudios de las áreas de anidación en la costa del Perú proveerá la información necesaria sobre el estatus de la Golondrina de la Tempestad Peruana.

  5. Desenvolvimento de um ambiente virtual de ensino em histologia para estudantes da saúde

    Directory of Open Access Journals (Sweden)

    Daniel Fernando Pereira Vasconcelos

    Full Text Available As tecnologias da informação e da comunicação (TICs têm sido amplamente utilizadas no ensino da saúde. As plataformas usadas para o desenvolvimento do ambiente virtual de ensino (AVE geralmente apresentam uma linguagem de informática complexa. O objetivo deste trabalho foi desenvolver um AVE em Histologia voltado para estudantes da área da saúde, disponibilizado na internet com o uso de uma plataforma de uso gratuito e livre. O material elaborado utilizou diferentes TICs, como: animações, vídeos, atlas virtual, aulas virtuais, simulados online e chat. Foi desenvolvido um AVE com uso da plataforma online wordpress.org, que apresentou as seguintes vantagens: fácil manipulação, gerenciamento e atualização do site; interface simples; ampla quantidade de plugins disponíveis, que supriram as necessidades primárias do AVE; e utilização gratuita e livre. Embora esse recurso possa facilitar o aprendizado em Histologia, é preciso avaliar sua efetividade.

  6. Riqueza, composição e distribuição espacial da comunidade de aves em um fragmento florestal urbano em Maringá, Norte do Estado do Paraná, Brasil = Richness, composition and spatial distribution of bird community on an urban forest fragment at Maringá, Northern Paraná State, Brazil

    Directory of Open Access Journals (Sweden)

    André Beal Galina

    2006-10-01

    Full Text Available Foi analisada a riqueza, composição e distribuição espacial de aves em um fragmento florestal urbano de 47,3 ha em Maringá, Sul do Brasil (23°25’S e 51°25W. Quatro hábitats foram categorizados neste fragmento: interior de floresta, borda de floresta, áreas abertas e lago. A borda e interior de floresta foram divididos em três estratos: inferior (abaixo de 3 m, médio (3-6 m e superior (acima de 6 m. Uma transecção abrangendo todos os hábitats foi percorrida quatro vezes por mês de janeiro a dezembro de 2003, totalizando 48 dias de amostragens. Foram registradas 86 espécies de aves no fragmento florestal, sendo os insetívoros e onívoros, respectivamente, as guildas com maior número de espécies. A maioriadas espécies foi registrada no máximo em 25% das amostragens. O interior da floresta foi o hábitat que teve a maior riqueza de espécies e a maior porcentagem de espécies com freqüência de ocorrência superior a 75%. O estrato médio apresentou a maior riqueza e o superior a maior porcentagem de espécies com freqüência de ocorrência superior a 75%. Ressalta-se a importância de se manter os vários fragmentos florestais urbanos e a cobertura arbórea nacidade de Maringá, a fim de se minimizar os efeitos do isolamento e tentar suprir as necessidades de uma parte da comunidade de aves que possivelmente não se manteria caso não houvesse outras áreas florestais próximas ao local estudado.Richness, composition and spatial distribution of birds were analyzed on an urban forest fragment of 47.3 ha at Maringá, Southern Brazil (23°25'S and 51°25W. Four habitats were categorized on this fragment: forest, forest edge, open areas and lagoon. The forest and forest edge were divided into three levels: understory (bellow 3 m, mid-levels (3-6 m and canopy (above 6 m. A standard transect was ran throughout all pre-established habitats four times each month of January to December 2003, totaling 48 sampling days. A total of 86

  7. Tropical Cyclone Wind Probability Forecasting (WINDP).

    Science.gov (United States)

    1981-04-01

    llq. h. ,c ilrac (t’ small probabilities (below 107c) is limited II(t’h, numb(r o!, significant digits given: therefore 1t( huld lU r~ruidvd as being...APPLIED SCI. CORP. ENGLAMD ;7MOS. SCIENCES OEPT., LIBRARY ATTN: LIBARY , SUITE 500 400 WASHINGTON AVE. 6811 KENILWORTH AVE. EUROPEAN CENTRE FOR MEDIUM

  8. 76 FR 20293 - Approval and Promulgation of Implementation Plans and Designations of Areas for Air Quality...

    Science.gov (United States)

    2011-04-12

    ... Co. ( 37-119-1009). Rowan County (NC) 301 West St. & Gold 0.084 0.071 0.077 0.077 Hill Ave. (37-159...). Rowan County (NC) 301 West St & Gold 93 91 95 93 Hill Ave. (37-159- 0021). Rowan County (NC) 925 N... 40 CFR Part 52 Environmental protection, Air pollution control, Intergovernmental relations, Oxides...

  9. Adiciones a la avifauna de los Humedales de Ite, costa sur de Perú

    Directory of Open Access Journals (Sweden)

    Jhonson K. Vizcarra

    2011-07-01

    Full Text Available El presente trabajo reporta nueve nuevos registros de especies de aves para los Humedales de Ite. Las especies fueron observadas entre julio de 2008 y junio de 2009. Estas observaciones incrementan el número de aves reportadas hasta 139 especies y contribuyen a justificar la importancia para la conservación de este ambiente.

  10. Coastal waterbirds of El Chorro and Majahuas, Jalisco, México, during the non-breeding season, 1995-1996

    Directory of Open Access Journals (Sweden)

    Salvador Hernández-Vázquez

    2001-03-01

    Full Text Available We studied how waterbirds used two small estuaries during the non-breeding season of 1995-1996. These estuaries, El Chorro and Majahuas, were located in the middle of a large span of non-wetland habitat along the Pacific coast of México. Whereas El Chorro was basically a large and open waterbody, Majahuas was a long and narrow corridor flanked by mangroves. The two estuaries had 77 species throughout our study, but shared only 58, due to differences in their habitat. Seabirds comprised 66% of all the birds; grebes, ducks and rails 16%; shorebirds 12% and herons and egrets 5%. During late winter and early spring a very reduced number of migratory species accounted for the dominance of seabirds. Sterna hirundo and Phalacrocorax brasilianus accounted for 40 and 33%, respectively, of all the seabirds. Opening or closure of the estuary mouth at El Chorro affected the bird communities at both sites, by exposing or inundating a large mudflat in that estuary. Overall, however, time of the year was more important in the composition of the bird assemblages. Both estuaries should be considered as a single unit.Durante la estación no reproductiva de 1995-1996 estudiamos las aves acuáticas de los estuarios El Chorro y Majahuas, Jalisco, México. El Chorro es un cuerpo de agua más abierto, mientras que Majahuas está formado por canales rodeados por manglares. Registramos 77 especies de aves. Las aves marinas comprendieron el 66%, los patos y similares el 16%, las aves playeras el 12% y las garzas el 5%. Sterna hirundo y Phalacrocorax brasilianus representaron el 40 y 33%, respectivamente, del total de aves marinas. El que la bocabarra de El Chorro estuviera abierta o cerrada influyó en la concentración de aves en los dos esteros, debido a la exposición o inundación de áreas lodosas y arenosas. A pesar de las diferencias entre los dos estuarios, la época del año fue más importante en la composición de las comunidades de aves. Ambos esteros deben

  11. Blood parasites in passerine birds from the Brazilian Atlantic Forest Hemoparasitos em passeriformes da Mata Atlântica Brasileira

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    Fabiane Sebaio

    2012-03-01

    Full Text Available Parasites may lead bird species to extinction, affect host temporal and spatial population dynamics, alter community structure and alter individuals’ social status. We evaluated blood parasite prevalence and intensity according to bird families and species, among 925 birds that were caught in 2000 and 2001, in the Atlantic Forest in the State of Minas Gerais, Brazil. We applied Giemsa staining to thin blood smears, to detect blood parasites. The birds (n = 15.8% in 11 families, were infected by at least one parasite genus, especially Muscicapidae (28.3% and Conopophagidae (25%. Among the 146 infected birds, Plasmodium was detected in all bird families and had the highest prevalence (54.8%. Trypanosoma, Haemoproteus and microfilaria had lower prevalence rates (23.3, 23.3 and 2.1%, respectively. Birds caught during the rainy season were more infected than birds caught during the dry season. The overall low prevalence of blood parasites in birds is similar to the patterns found elsewhere in the Neotropical region.Parasitos podem levar espécies de aves à extinção, afetar as dinâmicas temporais e espaciais dos hospedeiros, alterar a estrutura de comunidades e o status social de indivíduos. Avaliou-se a prevalência e a intensidade de parasitos em famílias e espécies de 925 aves capturadas, entre 2000 e 2001, na Mata Atlântica de Minas Gerais. Foram coradas com Giemsa extensões de sangue para detectar parasitos hematozoários. As aves (n= 15,8% 11 famílias estavam infectadas por pelo menos um gênero de parasito, especialmente Muscicapidae (28,3% e Conopophagidae (25%. Entre as 146 aves infectadas, Plasmodium foi detectado em todas as famílias e possuiu a maior prevalência (54,8%. Trypanosoma,Haemoproteus e microfilaria possuíram baixas prevalências (23,3, 23,3 e 2,1%, respectivamente. Aves capturadasdurante a estação chuvosa estavam mais infectadas do que aves capturadas durante a estação seca. A baixa prevalência geral de

  12. Attitudes of UK doctors towards euthanasia and physician-assisted suicide: a systematic literature review.

    Science.gov (United States)

    McCormack, Ruaidhri; Clifford, Margaret; Conroy, Marian

    2012-01-01

    To review studies over a 20-year period that assess the attitudes of UK doctors concerning active, voluntary euthanasia (AVE) and physician-assisted suicide (PAS), assess efforts to minimise bias in included studies, determine the effect of subgroup variables (e.g. age, gender) on doctors' attitudes, and make recommendations for future research. Three electronic databases, four pertinent journals, reference lists of included studies. Literature search of English articles between January 1990 and April 2010. Studies were excluded if they did not present independent data (e.g. commentaries) or if they related to doctors outside the UK, patients younger than 18 years old, terminal sedation, withdrawing or withholding treatment, or double-effect. Quantitative and qualitative data were extracted. Following study selection and data extraction, 15 studies were included. UK doctors oppose the introduction of both AVE and PAS in the majority of studies. Degree of religiosity appeared as a statistically significant factor in influencing doctors' attitudes. The top three themes in the qualitative analysis were the provision of palliative care, adequate safeguards in the event of AVE or PAS being introduced, and a profession to facilitate AVE or PAS that does not include doctors. UK doctors appear to oppose the introduction of AVE and PAS, even when one considers the methodological limitations of included studies. Attempts to minimise bias in included studies varied. Further studies are necessary to establish if subgroup variables other than degree of religiosity influence attitudes, and to thoroughly explore the qualitative themes that appeared.

  13. Functional Redundancy and Ecological Innovation Shape the Circulation of Tick-Transmitted Pathogens

    Directory of Open Access Journals (Sweden)

    Agustín Estrada-Peña

    2017-05-01

    Full Text Available Ticks are vectors of pathogens affecting human and animal health worldwide. Nevertheless, the ecological and evolutionary interactions between ticks, hosts, and pathogens are largely unknown. Here, we integrated a framework to evaluate the associations of the tick Ixodes ricinus with its hosts and environmental niches that impact pathogen circulation. The analysis of tick-hosts association suggested that mammals and lizards were the ancestral hosts of this tick species, and that a leap to Aves occurred around 120 M years ago. The signature of the environmental variables over the host's phylogeny revealed the existence of two clades of vertebrates diverging along a temperature and vegetation split. This is a robust proof that the tick probably experienced a colonization of new niches by adapting to a large set of new hosts, Aves. Interestingly, the colonization of Aves as hosts did not increase significantly the ecological niche of I. ricinus, but remarkably Aves are super-spreaders of pathogens. The disparate contribution of Aves to the tick-host-pathogen networks revealed that I. ricinus evolved to maximize habitat overlap with some hosts that are super-spreaders of pathogens. These results supported the hypothesis that large host networks are not a requirement of tick survival but pathogen circulation. The biological cost of tick adaptation to non-optimal environmental conditions might be balanced by molecular mechanisms triggered by the pathogens that we have only begun to understand.

  14. Helmintos gastrointestinales en aves acuáticas de la subcuenca alta del río Lerma, México Gastrointestinal helminth in waterfowl of the upper Lerma river sub-basin, Mexico

    Directory of Open Access Journals (Sweden)

    Marcela Martínez-Haro

    2012-03-01

    Full Text Available Se realizó un inventario y se calcularon los parámetros de infección de los helmintos gastrointestinales de 36 ejemplares de aves acuáticas pertenecientes a las familias Anatidae, Rallidae y Threskiornithidae, procedentes de la subcuenca alta del río Lerma, Estado de México, identificándose 20 especies: 9 tremátodos, 8 céstodos, 2 nemátodos y 1 acantocéfalo. De las 8 especies de céstodos, 6 son registros nuevos para el país y Pseudocorynosoma constrictum se registra por primera vez en Anas crecca, Anas discors, Oxyura jamaicensis y Fulica americana. Los helmintos que presentaron las prevalencias más altas fueron los céstodos Hymenolepis megalops y Sobolevicanthus krabbeella en Anas acuta, Anas clypeata, Anas cyanoptera y Anas crecca.A survey of helminth parasites in 36 waterfowl species from the upper Lerma River, in central Mexico was conducted. A total of 20 helminth species were recorded, including 9 trematodes, 8 cestodes, 2 nematodes and 1 acanthocephalan. Six of the cestode species are recorded for the fisrt time from Mexican birds; the acanthocephalan Pseudocorynosoma constrictum is reported for the first time in Anas crecca, A. discors, Oxyura jamaicensis and Fulica americana. The highest prevalences were recorded for the cestodes Hymenolepis megalops and Sobolevicanthus krabbeella in Anas acuta, A. clypeata, A. cyanoptera and A. crecca.

  15. Status and distribution of migrating and breeding marine birds in north Lebanon

    International Nuclear Information System (INIS)

    Jarade, Gh.R.

    2017-01-01

    The study of marine birds in the northern part of Lebanon recorded 2681 individuals, distributed over 86 species. Among them 35 are foreshore species, 18 coastal, 6 maritime, 9 ducks, 6 herons, 9 various saltwater related species and 3 terrestrial. The highest density is shown by the yellow-legged Gull Larus michahellis and common blackheaded gull Chroicocephalus ridibundus. The globally vulnerable yelkouan shearwater Puffinus yelkouan, an endemic species to the Mediterranean, appears on the 9th rank in the classification of seabird species from the more to the least abundant, highlighting as such, beside other 6 globally near threatened species, the role that Lebanon can play in improving the conservation status of these species. Regarding the phenological status of species, 48 are passage migrant/winter visitors, 31 passage migrants, 5 winter visitors and 2 vagrant species. The surveys revealed that three coastal seabird species (Armenian gull Larus armenicus, slender-billed gull Chroicocephalus genei and sandwich tern Thalasseus sandvicensis) and one ubiquist species (Eurasian Golden Plover Pluvialis apricaria) are not rare as it was believed in previous papers but fairly common winter visitors. The study identified the yellow-legged gull breeding population to be 160 couples, and confirmed the second and third breeding records of the little ringed plover Charadrius dubius.(author)

  16. Seabird species vary in behavioural response to drone census.

    Science.gov (United States)

    Brisson-Curadeau, Émile; Bird, David; Burke, Chantelle; Fifield, David A; Pace, Paul; Sherley, Richard B; Elliott, Kyle H

    2017-12-20

    Unmanned aerial vehicles (UAVs) provide an opportunity to rapidly census wildlife in remote areas while removing some of the hazards. However, wildlife may respond negatively to the UAVs, thereby skewing counts. We surveyed four species of Arctic cliff-nesting seabirds (glaucous gull Larus hyperboreus, Iceland gull Larus glaucoides, common murre Uria aalge and thick-billed murre Uria lomvia) using a UAV and compared censusing techniques to ground photography. An average of 8.5% of murres flew off in response to the UAV, but >99% of those birds were non-breeders. We were unable to detect any impact of the UAV on breeding success of murres, except at a site where aerial predators were abundant and several birds lost their eggs to predators following UAV flights. Furthermore, we found little evidence for habituation by murres to the UAV. Most gulls flew off in response to the UAV, but returned to the nest within five minutes. Counts of gull nests and adults were similar between UAV and ground photography, however the UAV detected up to 52.4% more chicks because chicks were camouflaged and invisible to ground observers. UAVs provide a less hazardous and potentially more accurate method for surveying wildlife. We provide some simple recommendations for their use.

  17. Environmental pollutants in endangered vs. increasing subspecies of the lesser black-backed gull on the Norwegian Coast

    International Nuclear Information System (INIS)

    Bustnes, Jan Ove; Helberg, Morten; Strann, Karl-Birger; Skaare, Janneche Utne

    2006-01-01

    Organochlorine (OC) residues were measured in eggs and blood of different subspecies of the lesser black-backed gull, Larus fuscus, on the Norwegian coast: a) increasing L. f. intermedius in the North Sea; b) endangered L. f. fuscus near the Arctic Circle; c) L. f. fuscus and greyish-mantled gulls, with a L. f. intermedius appearance, in the Barents Sea region. The dominating OCs in lesser black-backed gulls were polychlorinated biphenyls (PCB) and p,p'-dichlorodiphenyldichloroethylene (DDE). DDE and β-hexachlorocyclohexane (β-HCH) residues were higher in L. f. fuscus compared to L. f. intermedius and greyish-mantled birds in the Barents Sea region. In the latter area, blood residues of PCB and DDE in lesser black-backed gulls were as high as in great black-backed gulls, Larus marinus, while in the other regions they were lower. The higher DDE residues in endangered L. f. fuscus compared to increasing L. f. intermedius and greyish-mantled birds, which are invading northern Norway, suggest that OCs may have played a role in the population decline of L. f. fuscus, possibly in combination with nutrient stress. - DDE and β-HCH residues were higher in an endangered compared to an increasing subspecies of lesser black-backed gulls in Norway

  18. Identification and characterization of a novel adenovirus in the cloacal bursa of gulls

    International Nuclear Information System (INIS)

    Bodewes, R.; Bildt, M.W.G. van de; Schapendonk, C.M.E.; Leeuwen, M. van; Boheemen, S. van; Jong, A.A.W. de; Osterhaus, A.D.M.E.; Smits, S.L.; Kuiken, T.

    2013-01-01

    Several viruses of the family of Adenoviridae are associated with disease in birds. Here we report the detection of a novel adenovirus in the cloacal bursa of herring gulls (Larus argentatus) and lesser black-backed gulls (Larus fuscus) that were found dead in the Netherlands in 2001. Histopathological analysis of the cloacal bursa revealed cytomegaly and karyomegaly with basophilic intranuclear inclusions typical for adenovirus infection. The presence of an adenovirus was confirmed by electron microscopy. By random PCR in combination with deep sequencing, sequences were detected that had the best hit with known adenoviruses. Phylogenetic analysis of complete coding sequences of the hexon, penton and polymerase genes indicates that this novel virus, tentatively named Gull adenovirus, belongs to the genus Aviadenovirus. The present study demonstrates that birds of the Laridae family are infected by family-specific adenoviruses that differ from known adenoviruses in other bird species. - Highlights: ► Lesions typical for adenovirus infection detected in cloacal bursa of dead gulls. ► Confirmation of adenovirus infection by electron microscopy and deep sequencing. ► Sequence analysis indicates that it is a novel adenovirus in the genus Aviadenovirus. ► The novel (Gull) adenovirus was detected in multiple organs of two species of gulls

  19. Avanços metodológicos na avaliação de alimentos e de exigências nutricionais para aves e suínos Methodological improvements in feedstuffs evaluation and nutritional requirements for poultry and swine

    Directory of Open Access Journals (Sweden)

    Horacio S. Rostagno

    2007-07-01

    Full Text Available A produção industrial de aves e suínos mostrou enormes avanços nos últimos anos, principalmente devido ao aumento dos conhecimentos na área de genética e de nutrição. Na área de avaliação dos alimentos e das exigências nutricionais de animais monogástricos, as melhoras se dão a passos largos, devido á seriedade com que os profissionais encaram a responsabilidade de fazer pesquisa de qualidade dentro e fora do país. Neste trabalho serão abordadas as metodologias que permitem melhorar a utilização dos alimentos de maneira mais eficiente e econômica. Serão citados alguns cuidados e procedimentos essenciais para executar adequadamente experimentos de desempenho com aves e suínos. Na atualidade, para a realização de experimentos com monogástricos, é necessário: definir claramente os objetivos, utilizar animais com peso inicial uniforme, usar número adequado de repetições e de animais por unidade experimental. Testes de médias devem ser usados para as variáveis qualitativas e quando a variável independente for quantitativa aplicar análise de regressão. O nível de significância utilizado (5, 7, 10% pode variar conforme a importância econômica da característica estudada. A adequada condução dos ensaios, sejam de crescimento ou de digestibilidade, é fundamental para que as ferramentas apresentadas possam ter efetividade, resultando na melhora da produtividade e na redução dos custos e da excreção de nutrientes.Swine and Poultry production showed enormous progress in the last few years, mainly due to the increased knowledge in genetics and nutrition. In the area of feedstuffs evaluation and nutritional requirements the improvement also was big due to the seriousness of the professionals to make high quality research in Brazil and abroad. This paper shows methodologies that can improve feedstuffs utilization more efficiently with lower costs. Procedures are described for adequate execution of growth

  20. : tous les projets | Page 209 | CRDI - Centre de recherches pour le ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    La recherche destinée aux responsables des politiques de l'Ukraine, de la Russie et du Bélarus mettra en évidence la façon dont les mesures de taxation des produits du tabac peuvent contribuer à l'atteinte d'objectifs en matière de santé publique et à la réduction de la charge de morbidité et de mortalité liée au tabagisme ...

  1. Ce que nous faisons | Page 76 | CRDI - Centre de recherches pour ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    La recherche destinée aux responsables des politiques de l'Ukraine, de la Russie et du Bélarus mettra en évidence la façon dont les mesures de taxation des produits du tabac peuvent contribuer à l'atteinte d'objectifs en matière de santé publique et à la réduction de la charge de morbidité et de mortalité liée au tabagisme ...

  2. Incidence de la hausse des taxes sur le tabac et du prix des produits ...

    International Development Research Centre (IDRC) Digital Library (Canada)

    La recherche destinée aux responsables des politiques de l'Ukraine, de la Russie et du Bélarus mettra en évidence la façon dont les mesures de taxation des produits du tabac peuvent contribuer à l'atteinte d'objectifs en matière de santé publique et à la réduction de la charge de morbidité et de mortalité liée au tabagisme ...

  3. Clinical features, neuroimaging and prognosis of adult patients with clinically diagnosed acute-onset encephalitis treated at a teaching neurology center in the Toyama area of Japan

    International Nuclear Information System (INIS)

    Dougu, Nobuhiro; Takashima, Shutaro; Taguchi, Yoshiharu; Sasahara, Etsuko; Tanaka, Kortaro; Inoue, Hiroshi

    2006-01-01

    Although acute viral encephalitis (AVE) and acute disseminated encephalomyelitis (ADEM) are etiologically and pathologically distinct, a differential diagnosis between these two disorders is often difficult, especially if the patient exhibits a disturbance in consciousness. To identify useful clinical differences enabling a differential diagnosis to be made at an early stage, we retrospectively analyzed patients who had been admitted to our hospital within the past seven years because of acute-onset encephalitis with a disturbance in consciousness. Eleven adult patients were classified as having AVE, and 8 adult patients were classified as having ADEM within this period. The clinical characteristics of the two groups were then compared. Patients with AVE exhibited a disturbance in consciousness as their first neurological sign, whereas patients with ADEM initially showed focal signs like spastic paralysis, urinary disturbance and ataxia, which were followed by a disturbance in consciousness. ADEM is usually preceded by infection or vaccination, but obtaining a medical history from patients with disturbed consciousness is often difficult. Based on the present analysis, the initial manifestation of focal neurological signs may be very useful for distinguishing ADEM from AVE. (author)

  4. Micro And Nanostructured Materials For Fluid And Ion Transport For Miniaturized Applications

    Science.gov (United States)

    2016-06-08

    MASSACHUSETTS INSTITUTE OF TECHNOLOGY 77 MASSACHUSETTS AVE CAMBRIDGE , MA 02139-4301 US 8. PERFORMING ORGANIZATION REPORT NUMBER 9. SPONSORING/MONITORING...Institution: Massachusetts Institute of Technology - Mailing Address: 77 Massachusetts Ave 37-401, Cambridge , MA 02139 USA - Phone: (617) 258-0742...operating at !"" =1818 V. The relative intensities of the four signals are illustrated in the inset. Each current signal has been normalized to

  5. Temporal variation in the reproductive success of Cacicus haemorrhous (Linnaeus (Aves, Icterinae in an Atlantic Forest reserve in Southeast Brazil Variação temporal no sucesso reprodutivo de Cacicus haemorrhous (Linnaeus (Aves, Icterinae em uma reserva de Floresta Atlântica no sudeste do Brasil

    Directory of Open Access Journals (Sweden)

    Charles Duca

    2005-06-01

    Full Text Available For colonial bird species, egg hatching synchrony has been considered an important factor in their reproductive success. The Red-rumped Cacique, Cacicus haemorrhous (Linnaeus, 1766, is a Passeriformes species (Icterinae that reproduces in colonies in which groups of females lay their eggs at different periods during the reproductive season. The objective of this study was to evaluate if there was a variation in the reproductive success among C. haemorrhous females groups that lay eggs in different periods along the reproductive season. A total of 192 nests from four colonies were monitored at Parque Estadual do Rio Doce, Minas Gerais state, Brazil, and used to calculate the nest survival probability in different periods (early and late of the 2001 reproductive season. The results showed that females that reproduced at the beginning of the reproductive period had higher reproductive success than those that reproduced later. Predation was the main cause of nests loss (48,4%, and an increase in predation rate was observed as the reproductive period advanced.Para espécies de aves coloniais a sincronia de eclosão dos ovos tem sido considerada um fator que influencia o sucesso reprodutivo. O Guaxe, Cacicus haemorrhous (Linnaeus, 1766, é uma espécie de Passeriformes (Icterinae que se reproduz em colônias com grupos de fêmeas fazendo a postura em diferentes períodos ao longo da estação reprodutiva. O objetivo deste estudo foi avaliar se há uma variação no sucesso reprodutivo de C. haemorrhous entre esses grupos de fêmeas que fazem a postura em diferentes períodos ao longo da estação reprodutiva. Quatro colônias totalizando 192 ninhos foram monitoradas no Parque Estadual do Rio Doce, Minas Gerais, Brasil, calculando-se a probabilidade de sobrevivência dos ninhos em relação a diferentes períodos (cedo e tardio ao longo da estação reprodutiva de 2001. Constatou-se que fêmeas que reproduziram mais cedo na estação reprodutiva

  6. Diferentes Perfis de Aminoácidos para Frangos de Corte no Período de 43 a 56 Dias de Idade

    Directory of Open Access Journals (Sweden)

    Araújo Lúcio Francelino

    2002-01-01

    Full Text Available Um experimento foi conduzido para avaliar o desempenho e rendimento de carcaça de duas marcas comerciais de frangos de corte alimentados com diferentes perfis de aminoácidos. Dados de desempenho (ganho de peso, consumo de ração e conversão alimentar, carcaça (rendimento de carcaça, peito, pernas, dorso, asas, pés, cabeça e gordura abdominal e vísceras comestíveis (moela, fígado e coração foram coletados. O experimento foi realizado no período de 43 a 56 dias de idade e o delineamento experimental foi inteiramente casualizado em esquema fatorial 2x4 (duas marcas comerciais -- Hubbard e HI-Yield, e quatro perfis de aminoácidos - NRC (1994, Rostagno et al. (1992, Degussa (1997 e AEC (1993, com quatro repetições de 50 aves cada. Quando as diferentes recomendações foram comparadas, o nível de lisina foi mantido constante, utilizando o nível do NRC (1994 como padrão. As aves alimentadas com dietas formuladas segundo recomendações do NRC (1994 apresentaram menor ganho de peso e pior conversão alimentar. As aves da marca comercial Hubbard apresentaram melhor ganho de peso, porém o consumo e a conversão alimentar não foram alterados. O rendimento de carcaça não diferiu entre os tratamentos. Contudo, as aves da marca comercial Hubbard apresentaram melhor rendimento de pernas e as aves HI-Yield, melhor rendimento de peito. A gordura abdominal foi afetada pelos tratamentos estudados em que aves da marca comercial Hubbard e alimentadas de acordo com os níveis recomendados pelo AEC (1993 apresentaram menor porcentagem de gordura abdominal. Não ocorreu efeito significativo para as vísceras comestíveis.

  7. Improved Harmony Search Algorithm with Chaos for Absolute Value Equation

    Directory of Open Access Journals (Sweden)

    Shouheng Tuo

    2013-11-01

    Full Text Available In this paper, an improved harmony search with chaos (HSCH is presented for solving NP-hard absolute value equation (AVE Ax - |x| = b, where A is an arbitrary square matrix whose singular values exceed one. The simulation results in solving some given AVE problems demonstrate that the HSCH algorithm is valid and outperforms the classical HS algorithm (CHS and HS algorithm with differential mutation operator (HSDE.

  8. Keelatud ained / Ave Oit

    Index Scriptorium Estoniae

    Oit, Ave

    2012-01-01

    Öko- ja looduskosmeetikas keelatud või piirangutega lubatud koostisainetest: silikoonid, etoksüleeritud emulgaatorained (PEG-ühendid), toorõli baasil valmistatud rasvained ja emulgaatorid s.h mineraalõlid ja -vahad

  9. Incidência de ascite em diferentes categorias genéticas de frangos de corte alimentados com rações de alto nível energético Incidence of ascites on different genetic categories of broilers fed with high-energy diet

    Directory of Open Access Journals (Sweden)

    Manoel Garcia Neto

    2003-06-01

    Full Text Available O objetivo deste trabalho foi verificar a incidência de ascite em avós, matrizes e frangos de corte, de uma mesma linhagem comercial, alimentados com ração de alto nível energético, de um dia a 39 dias de idade. Todas as aves foram criadas como frangos de corte, recebendo ração ad libitum com 3.050 kcal/EM; foram utilizadas aves da linha fêmea e linha macho e frangos de corte. Um total de 2.700 aves foram usadas, alojadas ao acaso em um galpão experimental de 8x76 m, utilizando-se 27 boxes de 3x3,5 m, com 100 aves por divisão, sendo três repetições por tratamento, em esquema fatorial. A incidência de ascite não dependeu da categoria genética das aves.The objective of this work was to verify the incidence of ascites on grand parents, breeders and commercial broilers from the same genetic strain of birds, fed with high energy level ration, from the first day of age to 39 days old. All birds were grown as commercial broilers receiving a ration ad libitum with 3,050 kcal/ME; birds from female line, male line and commercial broilers were tested. A total of 2,700 birds were housed at random in a experimental facility of 8x76 m, with 27 compartments of 3x3.5 m each and 100 birds per division. A factorial design was used with three replications per treatment. The incidence of ascites was not dependent on genetic category.

  10. Effects of changing climate on reference crop evapotranspiration over 1961-2013 in Xinjiang, China

    Science.gov (United States)

    Yao, Ning; Li, Yi; Sun, Changfeng

    2018-01-01

    To know the importance of different climate variables on reference crop evapotranspiration ( ET o), a step-by-step sensitivity analysis of ET o to single, two, and multi-climate variables ( C) was conducted. ET o in north, south, and entire Xinjiang Province, China, over 1961-2013 was estimated using the Penman-Monteith equation. Trends in the involved six Cs (i.e., minimum temperature— T min, average temperature— T ave, maximum temperature— T max, wind speed at 2 m— U 2, sunshine hour— n, and relative humidity— RH) were detected by the modified Mann-Kendall test. Nineteen scenarios of changed Cs were preset to obtain recalculated ET o values considering the actual trend in each C and the Pearson's correlation relationship between ET o and Cs. The results showed that ET o was mostly sensitive to T max, U 2, and n. Sensitivity of ET o to the two overlapped changes of T min and T max caused larger increases in ET o than T max and T ave, T ave and T max, T max and (- n), T max and RH, T max and (- U 2), and T min and T ave, but the overlapped changes (- U 2) and (- n) caused larger decreases in ET o than the other two C scenarios. The simultaneously increased T max, T min, T ave, and RH plus decreased U 2 and n had caused the actual decreases in ET o in Xinjiang. In general, the effects of decreased U 2 and n on decreasing ET o compensated the effects of increased T max on decreasing ET o in Xinjiang.

  11. Técnica de Doyle na correção de fratura completa em úmero de tucano (Ramphastos toco: relato de caso

    Directory of Open Access Journals (Sweden)

    D.B.C. Lima

    2014-12-01

    Full Text Available O objetivo deste trabalho foi relatar a realização de osteossíntese no úmero esquerdo de uma ave silvestre utilizando-se a técnica de Doyle. Um tucano (Ramphastos toco sofreu uma fratura transversa completa no terço proximal do úmero esquerdo. Após avaliação clínica e procedimentos pré-operatórios, a ave foi submetida à osteossíntese. A técnica cirúrgica utilizada permitiu uma perfeita coaptação dos fragmentos ósseos, ocasionando a formação de calo ósseo e recuperação do membro afetado em um período curto de tempo, apresentando-se como opção eficaz na correção de fraturas do úmero em aves de médio porte.

  12. GPS synchronisation of harmonic and transient measurements in offshore wind farms

    DEFF Research Database (Denmark)

    Kocewiak, Łukasz Hubert; Arana Aristi, Iván; Hjerrild, Jesper

    2012-01-01

    The GPS synchronization challenges during the development, construction and installation of a measurement system for multi-point, high-speed and long-term data logging is described in this paper. The presented measurement system was tested in a rough offshore environment at Avedøre Holme and Gunf......The GPS synchronization challenges during the development, construction and installation of a measurement system for multi-point, high-speed and long-term data logging is described in this paper. The presented measurement system was tested in a rough offshore environment at Avedøre Holme...... and Gunfleet Sands Offshore wind farms. The paper will describe the application of GPS technology in synchronised measurements carried out at Avedøre Holme and Gunfleet Sands wind farms. Different aspects of software development and hardware configuration in order to optimise measurement system reliability...

  13. Improvement of Managerial Education of Junior Officers of the Venezuelan Navy.

    Science.gov (United States)

    1988-03-01

    it is very important that the Navy has a well rounded career program to improve the management education of all officers, especially for those just...93943-5100 5. Comandancia General de la Armada de Venezuela 2 Director de Educacion de la Armada Ave. Vollmer, San Bernardino Caracas, Venezuela 1011...6. Escuela Superior de Guerra Naval 1 Direccion de Educacion de la Armada Ave. Vollmer, San Bernardino Caracas, Venezuela 1011 7. Cdr. Igor A. Campos

  14. SIAM Conference of Optimization Theory and Applications (4th) Held in Chicago, Illinois on May 11-13, 1992

    Science.gov (United States)

    1992-08-31

    Tokyo 107 Chiyodaku Tokyo 100 Japan Japan -4 - Rheozhong, Tan Richard A, Tapia Pablo , larazaga i University of Cincinnati Rice University University...GeraLdo, Veiga Jose A, Ventura 5256 Lynd Ave Apt 215 Penn State University Lyndhurst OH 44124-1031 2000 Durant Ave 207 Hammond Bldg (216) 581-5493 Berkeley...G.C. Resende, AT&T Bell University of Wisconsin, Madison Laboratories and Geraldo Veiga . 5:00 Robust Optimization. Masvely University of California

  15. Estudo do crescimento, desempenho, rendimento de carcaça e qualidade de carne de três linhagens de frango de corte Growth, performance, carcass yield and meat quality of three broiler chickens strains

    Directory of Open Access Journals (Sweden)

    Andrea Luciana dos Santos

    2005-10-01

    Full Text Available O objetivo nesta pesquisa foi avaliar o potencial de crescimento, desempenho zootécnico e as características de rendimento da carcaça, das partes e dos órgãos e a qualidade da carne de três linhagens de frango de corte: Cobb (CB, Paraíso Pedrês (PP e ISA Label (IL. O delineamento foi inteiramente casualizado, com cinco repetições de 29 aves por tratamento. Semanalmente, com os dados obtidos para peso corporal médio, foi descrito o crescimento das aves, utilizando-se a equação de Gompertz e, com sua derivada, foi obtida a taxa de crescimento das aves. Três aves de cada repetição foram selecionadas e abatidas para análises do rendimento da carcaça, das partes e dos órgãos. As características físico-químicas da carne foram avaliadas utilizando-se o peito de duas destas aves. As aves CB apresentaram maior potencial de crescimento e, entre as caipiras o maior potencial foi observado para PP. Quanto ao desempenho, observou-se que a linhagem CB apresentou maior ganho de peso e consumo de ração, seguida pelas aves PP e IL. Maiores rendimentos de carcaça, de peito, sobrecoxa, fígado, intestinos e proventrículo foram obtidos com as aves CB em relação às caipiras, que não diferiram entre si. As aves CB apresentaram carne de peito com maior pH e maior capacidade de retenção de água que as de linhagens caipiras, que apresentaram carne de peito menos macia e com maior intensidade da cor vermelha. Maior potencial de crescimento e maiores rendimentos de pés, coxa, coxa+sobrecoxa e de coração foram verificados nos machos, enquanto, nas fêmeas, maiores rendimentos de peito, porcentagem de gordura abdominal, fígado, moela e proventrículo. As aves CB em relação às caipiras possuíram maior potencial de crescimento e maior rendimento de partes nobres, mas as caipiras apresentaram atributos diferenciados que justificam sua criação.This is study aimed to compare growth performance, meat quality, and carcass yield of three

  16. Implicações biogeográficas de novos registros ornitológicos em um enclave de vegetação de campina no sudoeste da Amazônia brasileira Biogeographic implications of new avian records from a patch of white-sand forest in southwestern Brazilian Amazonia

    Directory of Open Access Journals (Sweden)

    Fabíola Poletto

    2005-12-01

    Full Text Available Campinas constituem um tipo florestal de porte arbóreo reduzido e aspecto geral aberto, que cresce em solos arenosos e lixiviados de toda a Amazônia; apesar de sua ampla distribuição, campinas ocorrem predominantemente nas regiões do alto e médio rio Negro, no noroeste do Amazonas e sul de Roraima, incluindo também o sul da Venezuela e o sudeste da Colômbia. Existem pequenas manchas isoladas de campinas no sudoeste da Amazônia brasileira que ainda não foram estudadas sistematicamente por ornitólogos; portanto, são reportados aqui alguns resultados importantes obtidos durante uma expedição ornitológica a uma mancha de campina no extremo sudoeste do estado do Amazonas (7º22'33,2"S e 73º00'42,5"W. Foram documentados para região os primeiros registros das seguintes espécies: Hemitriccus striaticollis (Lafresnaye, 1853 (Aves, Tyrannidae e Xenopipo atronitens Cabanis, 1847 (Aves, Pipridae; adicionalmente, foram obtidos registros com as seguintes espécies raras ou de distribuição pouco conhecida no sudoeste da Amazônia: Formicivora grisea (Boddaert, 1783 (Aves, Thamnophilidae, Conopias parvus (Pelzeln, 1868 (Aves, Tyrannidae e Heterocercus linteatus (Strickland, 1850 (Aves, Pipridae. Como verificado em manchas de campina distribuídas por todo o norte do Peru, a avifauna de campina que ocorre no sudoeste da Amazônia brasileira é também altamente influenciada por espécies associadas à região do alto rio Negro. Entretanto, uma segunda influência biogeográfica também pôde ser notada: aquela de espécies cujo centro de distribuição está localizado nas campinas do centro e leste da Amazônia, ao sul do rio Amazonas. A avifauna das campinas do sudoeste da Amazônia ainda é pouco conhecida; futuros levantamentos de enclaves de campina nesta região podem levar a novas extensões de distribuição e também à descoberta de novos táxons.White-sand forests (WSF hereafter include several types of stunted and open forest

  17. Resistência à Síndrome Ascítica, Competência Homeotérmica e Níveis de Hsp70 no Coração e Pulmão de Frangos de Corte Resistance to Ascites Syndrome, Homoeothermic Competence and Levels of Hsp70 in the Heart and Lung of Broilers

    Directory of Open Access Journals (Sweden)

    Renata Hernandes

    2002-06-01

    Full Text Available Como em outros seres vivos, também nas células das aves ocorre a síntese das proteínas de baixo peso molecular (Hsp, cujo aumento é induzido sob condições de estresse. As Hsps têm um papel importante na manutenção da integridade celular, questiona-se o seu envolvimento no mecanismo de proteção celular de órgãos alvos na ocorrência da síndrome ascítica (SA. Este trabalho objetivou avaliar a temperatura corporal e os níveis da Hsp70 no coração e pulmão de frangos de corte Hubbard (sensível à SA e caipira de pescoço-pelado (resistente, criados em termoneutralidade (25°C e frio (16°C entre 10 e 45 dias de idade. Foram utilizados 192 pintos machos, 96 de cada linhagem. Não houve mortalidade por SA nas aves caipiras. Nas aves Hubbard, a mortalidade devida à SA foi de 4% e 41% em ambiente termoneutro e frio, respectivamente. Em ambiente frio, a temperatura corporal das aves Hubbard foi menor que a das caipiras. A temperatura corporal e o nível de Hsp70 do coração das aves Hubbard diminuíram com o aumento da idade, mas não nas aves caipiras, os quais se mantiveram constantes, inclusive a Hsp70 do pulmão. Independente da idade ou da temperatura, o nível de Hsp70 no pulmão das aves caipiras era superior ao das aves Hubbard. Em relação às aves Hubbard, as caipiras são homeotérmicas mais competentes e apresentam uma maior indução de Hsp70 nos órgãos primariamente afetados na SA, mas este não parece ser o sistema de proteção contra SA, a qual as aves de pescoço pelado são resistentes.Similar to other living animals, the cells of the birds also synthesize small proteins (heat shock protein, Hsp, which increasing levels can be induce by stress. The Hsp have a relevant function in maintaining the integrity of the cell, and we question if they are involved in the mechanism of the cellular protection of target organs affected by ascites syndrome (AS. The objective of this study was to evaluate the body temperature

  18. Composição e Digestibilidade dos Aminoácidos das Sojas Integrais Processadas para Aves Composition and Bioavailability of Amino Acid of Full-Fat Soybeans in Poultry

    Directory of Open Access Journals (Sweden)

    M B Café

    2000-04-01

    Full Text Available O presente trabalho foi realizado com o objetivo de determinar a composição em aminoácidos e os coeficientes de digestibilidade dos aminoácidos da soja integral extrusada, tostada e do farelo de soja reconstituído de óleo. Foi utilizada a metodologia da alimentação forçada (Sibbad, 1976 com galos adultos. Para o cálculo dos coeficientes de digestibilidade dos aminoácidos das sojas testadas, foram consideradas as perdas endógenas e metabólicas obtidas de galos em jejum. Os dados médios de digestibilidade verdadeira de todos os aminoácidos testados foram de 91,1% para a soja extrusada, 78,6% para a soja tostada e 90,5% para o farelo de soja. Os resultados obtidos permitem concluir que a digestibilidade dos aminoácidos da soja integral tostada foi inferior a da soja extrusada e farelo de soja + óleo, que por sua vez foram semelhantes entre si. Portanto, pode-se afirmar que os diferentes tipos de processamentos da soja integral conferem a esse alimento características nutricionais distintas para aves.The present bird assays were conducted to determine the digestibility of amino acid content of process full-fat soybeans. Two types of process full-fat soybeans were utilized, the extruded and heated full-fat soybeans. The assay was developed by using the force-feeding adult rooster method. The results for amino acid digestibility of the extruded soybean were higher than that heated soybean. As the type of full-fat soybean processing caused differences on the amino acid availability of studied soybeans, it can be concluded that the different processing gave to those feedstuffs diverse nutritional characteristics for poultry.

  19. Ensemble-based prediction of RNA secondary structures.

    Science.gov (United States)

    Aghaeepour, Nima; Hoos, Holger H

    2013-04-24

    Accurate structure prediction methods play an important role for the understanding of RNA function. Energy-based, pseudoknot-free secondary structure prediction is one of the most widely used and versatile approaches, and improved methods for this task have received much attention over the past five years. Despite the impressive progress that as been achieved in this area, existing evaluations of the prediction accuracy achieved by various algorithms do not provide a comprehensive, statistically sound assessment. Furthermore, while there is increasing evidence that no prediction algorithm consistently outperforms all others, no work has been done to exploit the complementary strengths of multiple approaches. In this work, we present two contributions to the area of RNA secondary structure prediction. Firstly, we use state-of-the-art, resampling-based statistical methods together with a previously published and increasingly widely used dataset of high-quality RNA structures to conduct a comprehensive evaluation of existing RNA secondary structure prediction procedures. The results from this evaluation clarify the performance relationship between ten well-known existing energy-based pseudoknot-free RNA secondary structure prediction methods and clearly demonstrate the progress that has been achieved in recent years. Secondly, we introduce AveRNA, a generic and powerful method for combining a set of existing secondary structure prediction procedures into an ensemble-based method that achieves significantly higher prediction accuracies than obtained from any of its component procedures. Our new, ensemble-based method, AveRNA, improves the state of the art for energy-based, pseudoknot-free RNA secondary structure prediction by exploiting the complementary strengths of multiple existing prediction procedures, as demonstrated using a state-of-the-art statistical resampling approach. In addition, AveRNA allows an intuitive and effective control of the trade-off between

  20. Níveis de óleo e adição de complexo enzimático na ração de frangos de corte

    Directory of Open Access Journals (Sweden)

    Pucci Luiz Eduardo Avelar

    2003-01-01

    Full Text Available Dois experimentos foram conduzidos para avaliar o efeito da adição de óleo de soja e de um complexo enzimático em rações à base de milho e farelo de soja, sobre o desempenho de frangos de corte e a digestibilidade dos nutrientes. No experimento 1, foram utilizados 960 pintos de corte, não sexados, os quais receberam os tratamentos em esquema fatorial 4 x 2 (quatro níveis de inclusão de óleo de soja: 0; 2,5; 5,0 e 7,5%, com ou sem adição de um complexo enzimático contendo amilase, xilanase e protease, em quatro repetições de 30 aves cada, no período de 1 a 21 dias de idade. Dos 22 aos 42 dias de idade, todas as aves receberam uma mesma ração de crescimento, para avaliação de possível efeito residual dos tratamentos aplicados na fase inicial de criação sobre a fase seguinte. Aos 21 dias de idade, 90 aves (três machos e duas fêmeas de cada unidade experimental foram transferidas para uma sala de metabolismo (experimento 2, em que as aves receberam as mesmas rações experimentais, para determinação dos valores energéticos e dos coeficientes de digestibilidade da matéria seca e do extrato etéreo. Não houve efeito da adição do complexo enzimático, nem interação dos níveis de óleo e suplementação com enzimas sobre o desempenho das aves. O valor energético das rações melhorou em 2,3% com a adição de óleo, não havendo efeito da adição de enzimas. O nível de 2,33% de óleo permitiu máxima digestibilidade do extrato etéreo. Concluiu-se que a inclusão de óleo na ração melhorou o desempenho das aves e a conversão alimentar permaneceu constante a partir de 2,18% de inclusão.