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Sample records for silvestres sporophila caerulescens

  1. FAUNA SILVESTRE

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    Luis Fernando Osorio, Director 5 Simp. For.

    2012-10-01

    Full Text Available Comité científico del simposio Director Luis Fernando Osorio Vélez, Ph.D. Universidad Nacional de Colombia, sede Medellín. Colombia. Fauna silvestre Brian C. Bock, Ph.D. Universidad de Antioquia. Colombia. Jaime Polanía Vorenberg, Ph.D. Universidad Nacional de Colombia. Colombia. Joan Gastón Zamora Abrego, Ph.D. Universidad Nacional de Colombia. Colombia. Néstor Javier Mancera Rodríguez, Ph.D. Universidad Nacional de Colombia. Colombia. Sergio Solari, Ph.D. Universidad de Antioquia. Colombia.

  2. Tiny Bird, Huge Mystery-The Possibly Extinct Hooded Seedeater (Sporophila melanops Is a Capuchino with a Melanistic Cap.

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    Juan Ignacio Areta

    Full Text Available Known with certainty solely from a unique male specimen collected in central Brazil in the first quarter of the 19th century, the Critically Endangered (Possibly Extinct Hooded Seedeater Sporophila melanops has been one of the great enigmas of Neotropical ornithology, arguably the only one of a host of long-lost species from Brazil to remain obstinately undiscovered. We reanalysed the morphology of the type specimen, as well as a female specimen postulated to represent the same taxon, and sequenced mitochondrial DNA (COI and Cyt-b from both individuals. Furthermore, we visited the type locality, at the border between Goiás and Mato Grosso, and its environs on multiple occasions at different seasons, searching for birds with similar morphology to the type, without success. Novel genetic and morphological evidence clearly demonstrates that the type of S. melanops is not closely related to Yellow-bellied Seedeater S. nigricollis, as has been frequently postulated in the literature, but is in fact a representative of one of the so-called capuchinos, a clade of attractively plumaged seedeaters that breed mostly in the Southern Cone of South America. Our morphological analysis indicates that S. melanops has a hitherto unreported dark-coffee throat and that it is probably a Dark-throated Seedeater S. ruficollis collected within its wintering range, acquiring breeding plumage and showing melanism on the cap feathers. Alternatively, it may be a melanistic-capped individual of a local population of seedeaters known to breed in the Esteros del Iberá, Corrientes, Argentina, to which the name S. ruficollis might be applicable, whilst the name S. plumbeiceps might be available for what is currently known as S. ruficollis. A hybrid origin for S. melanops cannot be ruled out from the available data, but seems unlikely. The purported female specimen of S. melanops pertains either to S. nigricollis or to Double-collared Seedeater S. caerulescens based on

  3. "Towards practical cadmium phytoextraction with Thlaspi caerulescens"

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    During 2005-2007, a series of field trials were conducted to investigate the potential of Thlapsi caerulescens ecotypes derived from southern France to phytoextract localized Cd/Zn contamination in Thailand. Soil treatments included pH variation and fertilization level. T. caerulescens ecotypes w...

  4. Another color morph of Sporophila Seedeater from the capuchinos group (Aves, Emberizidae

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    Márcio Repenning

    2010-12-01

    Full Text Available The genus Sporophila (Cabanis, 1844 unites about 30 species of small seedeaters that predominantly inhabit open or semi-open areas in the Neotropical region. The taxonomy of this group is based on morphological studies from collected male specimens. The dynamic spatial and temporal variation in the male plumage and lack of knowledge of their vocalizations make it difficult to properly diagnose some species even today, so these two aspects account for the existing taxonomic dilemmas involving Sporophila. During a four-year field study, we investigated the natural history of a breeding population of Sporophila melanogaster (Pelzeln, 1870. This is an endemic species in Brazil, which reproduces in the high-altitude grasslands of the Atlantic Forest biome. We found four male specimens with clearly diagnosable plumage, distinct from the typical form of the species. Here we describe this previously unreported plumage form. Based on the evaluation of habitat use, vocalization, and reproductive behavior, we tested two hypotheses regarding its taxonomic status. We concluded that this is another case of an intra-specific color morph within the seedeaters of the "capuchinos" group.

  5. Towards practical cadmium phytoextraction with Noccaea caerulescens.

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    Simmons, R W; Chaney, R L; Angle, J S; Kruatrachue, M; Klinphoklap, S; Reeves, R D; Bellamy, P

    2015-01-01

    A series of field trials were conducted to investigate the potential of Noccaea caerulescens F.K. Mey [syn. Thlaspi caerulescens J &C Presl. (see Koch and Al-Shehbaz 2004)] populations (genotypes) derived from southern France to phytoextract localized Cd/Zn contamination in Thailand. Soil treatments included pH variation and fertilization level and application of fungicide. N. caerulescens populations were transplanted to the field plots three months after germination and harvested in May, prior to the onset of seasonal rains. During this period growth was rapid with shoot biomass ranging from 0.93-2.2 g plant(-1) (280-650 kg ha(-1)) DW. Shoot Cd and Zn concentrations for the four populations evaluated ranged from 460-600 and 2600-2900 mg kg(-1) DW respectively. Cadmium and Zn Translocation Factors (shoot/root) for the populations tested ranged from 0.91-1.0 and 1.7-2.1 and Bioaccumulation Factors ranged from 12-15 and 1.2-1.3. We conclude that optimizing the use of fungicidal sprays, acidic soil pH, planting density and increasing the effective cropping period will increase rates of Cd and Zn removal enough to facilitate practical Cd phytoextraction from rice paddy soils in Thailand.

  6. Amendoins silvestres para uso ornamental.

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    Renato Ferraz de Arruda Veiga

    2003-06-01

    Full Text Available Algumas espécies silvestres de amendoim (Arachis spp. gênero Arachis L. (Fabaceae, vêm sendo utilizadas como forração em jardins no Brasil, porém todas com pouca variabilidade já que a distribuição do germoplasma é feita sempre pelos mesmos acessos4. Por outro lado, inúmeras coletas têm sido realizadas, particularmente pela Embrapa Recursos Genéticos e Biotecnologia (Cenargen, disponibilizando acessos até então inacessíveis à pesquisa científica. Em virtude dessa nova disponibilidade e igualmente de híbridos resultantes de pesquisas do Cenargen, organizou-se este trabalho. Foram objeto desta pesquisa cinco espécies: A. glabrata Benth., A. helodes Mart. ex Krapov.& Rigoni, A. pintoi‘Krapov.& W.C.Gregory, A. repens Handro e A. kempff-mercadoi Krapov.,W.C.Gregory & C.E.Simpson, e seis híbridos originados dos paternais: A. appressipila Krapov.&W.C.Gregory, A. paraguariensis Chodat & Hassl., A. pintoi, A. repens e A. vallsi Krapov.& W.C.Gregoryi. O experimento foi desenvolvido no período dos anos agrícolas de 1998 a 2000, na Fazenda Santa Elisa do Instituto Agronômico (IAC, em Campinas (SP, anotando-se o número de flores por planta, a velocidade de desenvolvimento, a capacidade de cobertura do solo, aspectos ornamentais como exuberância das flores e folíolos, coloração e, ainda, sanidade e vigor dos acessos. Os híbridos apresentaram um bom comportamento, porém com ciclo anual, ao passo que os acessos de Arachis kempffmercadoi, A.helodes, A. repens e A. glabrata mostraram-se mais recomendáveis para o uso em jardins por serem perenes. Todos os acessos ficam mais bonitos no verão em razão do período de floração e graças ao verde de sua massa foliar.

  7. Multivariate analysis of protein profiles of metal hyperaccumulator Thlaspi caerulescens accessions.

    NARCIS (Netherlands)

    Tuomainen, M.H.; Nunan, N.; Lehesranta, S.J.; Tervahauta, A.I.; Hassinen, V.H.; Schat, H.; Koistinen, K.M.; Auriola, S.; McNicol, J.; Karenlampi, S.O.

    2006-01-01

    Thlaspi caerulescens is increasingly acknowledged as one of the best models for studying metal hyperaccumulation in plants. In order to study the mechanisms underlying metal hyper-accumulation, we used proteomic profiling to identify differences in protein intensities among three T caerulescens

  8. Field evaluation of Cd and Zn phytoextraction potential by the hyperaccumulators Thlaspi caerulescens and Arabidopsis halleri

    International Nuclear Information System (INIS)

    McGrath, S.P.; Lombi, E.; Gray, C.W.; Caille, N.; Dunham, S.J.; Zhao, F.J.

    2006-01-01

    Field trials were undertaken to investigate the effect of the application of metal mobilizing agents, different sowing strategies and length of growing season on the extraction of Cd and Zn from soils by Thlaspi caerulescens and Arabidopsis halleri. None of the mobilizing agents used enhanced metal accumulation by T. caerulescens. Between 1998 and 2000, on average across plots where Cd or Zn exceeded allowable limits, T. caerulescens removed 1.3 and 0.3% of the total soil Cd and Zn. In one season when T. caerulescens was grown for 14 months, 21.7 and 4.4% of the total soil Cd and Zn was removed. This was larger than values found when T. caerulescens was grown for 4 months. A. halleri accumulated similar concentrations of Zn, but lower Cd concentrations than T. caerulescens. The results indicate that metal phytoextraction using T. caerulescens can be used to clean up soils moderately contaminated by Cd. - The hyperaccumulator Thlaspi caerulescens (the Ganges ecotype) is more efficient at phytoextracting Cd than Zn from contaminated soil

  9. Field evaluation of Cd and Zn phytoextraction potential by the hyperaccumulators Thlaspi caerulescens and Arabidopsis halleri

    Energy Technology Data Exchange (ETDEWEB)

    McGrath, S.P. [Agriculture and the Environment Division, Rothamsted Research, Harpenden, Herts AL5 2JQ (United Kingdom)]. E-mail: steve.mcgrath@bbsrc.ac.uk; Lombi, E. [Agriculture and the Environment Division, Rothamsted Research, Harpenden, Herts AL5 2JQ (United Kingdom); Gray, C.W. [Agriculture and the Environment Division, Rothamsted Research, Harpenden, Herts AL5 2JQ (United Kingdom); Caille, N. [Agriculture and the Environment Division, Rothamsted Research, Harpenden, Herts AL5 2JQ (United Kingdom); Dunham, S.J. [Agriculture and the Environment Division, Rothamsted Research, Harpenden, Herts AL5 2JQ (United Kingdom); Zhao, F.J. [Agriculture and the Environment Division, Rothamsted Research, Harpenden, Herts AL5 2JQ (United Kingdom)

    2006-05-15

    Field trials were undertaken to investigate the effect of the application of metal mobilizing agents, different sowing strategies and length of growing season on the extraction of Cd and Zn from soils by Thlaspi caerulescens and Arabidopsis halleri. None of the mobilizing agents used enhanced metal accumulation by T. caerulescens. Between 1998 and 2000, on average across plots where Cd or Zn exceeded allowable limits, T. caerulescens removed 1.3 and 0.3% of the total soil Cd and Zn. In one season when T. caerulescens was grown for 14 months, 21.7 and 4.4% of the total soil Cd and Zn was removed. This was larger than values found when T. caerulescens was grown for 4 months. A. halleri accumulated similar concentrations of Zn, but lower Cd concentrations than T. caerulescens. The results indicate that metal phytoextraction using T. caerulescens can be used to clean up soils moderately contaminated by Cd. - The hyperaccumulator Thlaspi caerulescens (the Ganges ecotype) is more efficient at phytoextracting Cd than Zn from contaminated soil.

  10. Consumo e valor nutritivo de alimentos utilizados para Bicudo-verdadeiro (“Sporophila maximiliani” Consumption and nutritive value of feedstuffs used for great-billed seed finch (“Sporophila maximiliani”

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    Elis Regina de Moraes Garcia

    2011-09-01

    Full Text Available Foi conduzido um estudo para determinar o consumo e o valor nutritivo do alpiste comum (Phalaris Canariensis L., arroz (Oryza Sativa L., painço verde (Panicum Miliaceum L. e capim-arroz (Echinochloa Spp para Bicudo-verdadeiro (Sporophila maximiliani. Foram utilizadas 24 fêmeas adultas com idade média de dois anos, distribuídas em um delineamento inteiramente ao acaso, com quatro tratamentos, três repetições e duas aves por unidade experimental. Foi utilizado o método de coleta total de excretas para determinar os coeficientes de metabolização aparente da matéria seca, proteína e energia, assim como os valores de energia metabolizável aparente e corrigida para o balanço de nitrogênio. Não houve diferença nos consumos, com média de 3,55±0,11 gramas de alimento/ave/dia. O arroz apresentou os melhores valores para os coeficientes de metabolização da matéria seca (90,57% e da energia (90,55%. Os coeficientes de metabolização da proteína não diferiram entre os alimentos. Os melhores valores de energia metabolizável foram obtidos para o alpiste (3.612kcal/EM kg e o capim-arroz (3.509kcal/EM kg.An experiment was carried out to determinate the nutritive value and consumption of canary grass (Phalaris canariensis L., rice (Oryza sativa L., proso millet (Panicum miliaceum L. and barnyard grass (Echinochloa spp for the Great-billed Seed Finch (Sporophila maximiliani. Twenty four adult females averaging two years of age were assigned to a completely randomized design with four treatments, three replicates and two birds per pen. Fecal output was used to determine dry matter, protein and energy metabolizable coefficients, and also the values of apparent metabolizable energy and corrected by nitrogen. No differences were observed in consumption, with 3.55±0.11g of feedstuff/birds/day. Rice provided the best values for metabolization coefficients of dry matter (90.57% and energy (90.55%. No differences were observed for protein

  11. Sexagem cirúrgica em aves silvestres

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    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.

  12. Discovery of a second population of white-collared seedeaters, Sporophila torqueola (Passeriformes: emberizidae) along the Rio Grande of Texas

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    Woodin, Marc C.; Skoruppa, Mary K.; Blacklock, Gene W.; Hickman, Graham C.

    1999-01-01

    The range of the white-collared seedeater (Sporophila torqueola), a tropical grassland species, extends from Central America northward along both coasts of Mexico (Eitniear, 1997), including Tamaulipas and Nuevo Leon (Howell and Webb, 1995). White-collared seedeaters historically occurred commonly in extreme southern Texas (Oberholser, 1974; Rappole and Blacklock, 1994). However, since about 1950, white-collared seedeaters have undergone a precipitous decline in south Texas. Studies during 1994-1996 identified only seven to nine breeding pairs in the only population known to occur in Texas, located ca. 55 km downriver of Laredo, Texas, in Zapata Co. (Eitniear, 1997). Outside of the historical range, very few records are documented. Oberholser (1974) reported that three white-collared seed- eater specimens were collected in 1948 in Webb Co., northwest of Laredo, and Arnold (1980) also collected a white-collared seedeater in Webb Co. Vagrants also have been sighted as far afield as Corpus Christi (Blacklock, 1964), ca. 200 km north of the Rio Grande (Fig. 1).

  13. Ectoparasitos de animais silvestres no Maranhão

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    Mayra A P Figueiredo

    2010-11-01

    Full Text Available Objetivou-se identificar os ectoparasitos de animais silvestres recepcionados pelo Centro de Triagem de Animais Silvestres, São Luís, Maranhão. Os ectopararasitos identificados foram: piolhos Acidoproctus sp., Trinoton sp., Ciconiphilus sp, Austromenopon sp., Quadraceps sp., Saemundssonia sp. e Trichodectes canis; carrapato Amblyomma rotundatum e Rhipicephalus sanguineus; pulgas Ctenocephalides felis e larvas de Cochliomyia hominivorax. Os resultados apresentados documentam a infestação de mamíferos, répteis e aves silvestres por ectoparasitos.

  14. A comprehensive set of transcript sequences of the heavy metal hyperaccumulator Noccaea caerulescens

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    YA-FEN eLIN

    2014-06-01

    Full Text Available Noccaea caerulescens is an extremophile plant species belonging to the Brassicaceae family. It has adapted to grow on soils containing high, normally toxic, concentrations of metals such as nickel, zinc and cadmium. Next to being extremely tolerant to these metals, it is one of the few species known to hyperaccumulate these metals to extremely high concentrations in their aboveground biomass. In order to provide additional molecular resources for this model metal hyperaccumulator species to study and understand the mechanism of heavy metal exposure adaptation, we aimed to provide a comprehensive database of transcript sequences for N. caerulescens. In this study, 23830 transcript sequences (isotigs with an average length of 1025 bps were determined for roots, shoots and inflorescences of N. caerulescens accession ‘Ganges’ by Roche GS-FLEX 454 pyrosequencing. These isotigs were grouped into 20,378 isogroups, representing potential genes. This is a large expansion of the existing N. caerulescens transcriptome set consisting of 3705 unigenes. When compared to a Brassicaceae proteome set, 22,232 (93.2% of the N. caerulescens isotigs (corresponding to 19191 isogroups had a significant match and could be annotated accordingly. Of the remaining sequences, 98 isotigs resembled non-plant sequences and 1386 had no significant similarity to any sequence in the GenBank database. Among the annotated set there were many isotigs with similarity to metal homeostasis genes or genes for glucosinolate biosynthesis. Only for transcripts similar to Metallothionein3 (MT3, clear evidence for an additional copy was found. This comprehensive set of transcripts is expected to further contribute to the discovery of mechanisms used by N. caerulescens to adapt to heavy metal exposure.

  15. The prevalence and pathogenicity of gizzard nematodes of the genera Amidostomum and Epomidiostomum (Trichostrongylidae) in the lesser snow goose (Chen caerulescens caerulescens)

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    Tuggle, B.N.; Crites, John L.

    1984-01-01

    Three species of trichostrongylid nematodes were removed from the gizzards of 25 lesser snow geese, Chen caerulescens caerulescens, collected at Winisk, Ont. A 100% prevalence of infection was noted in the sampled population with each bird harboring two or more of the following species: Epomidiostomum crami (prevalence, 92%; mean intensity, 18.7 ± 13.3), Amidostomum anseris (prevalence, 84%; mean intensity, 9.6 ± 9.8), and Amidostomum spatulatum (prevalence, 84%; mean intensity, 11.2 ± 9.8). When large burdens (>30) of both A. anseris and A. spatulatum were present in the mucosal lining of the gizzard, progressive degeneration of the epithilium and koilin linings was noted in 16% of the geese examined. Severe necrotic granulomata observed in the gizzard muscle of 36% of the geese were associated with sizable burdens (>25) of E. crami which were found burrowed in the gizzard muscle.

  16. Gene Expression Differences between Noccaea caerulescens Ecotypes Help to Identify Candidate Genes for Metal Phytoremediation

    NARCIS (Netherlands)

    Halimaa, P.; Lin, Y.F.; Ahonen, V.H.; Blande, D.; Clemens, S.; Gyenesei, A.; Haikio, E.; Karenlampi, S.O.; Laiho, A.; Aarts, M.G.M.; Pursiheimo, J.P.; Schat, H.; Schmidt, H.; Tuomainen, M.H.; Tervahauta, A.I.

    2014-01-01

    Populations of Noccaea caerulescens show tremendous differences in their capacity to hyperaccumulate and hypertolerate metals. To explore the differences that could contribute to these traits, we undertook SOLiD high-throughput sequencing of the root transcriptomes of three phenotypically

  17. Decrease of labile Zn and Cd in the rhizosphere of hyperaccumulating Thlaspi caerulescens with time

    Energy Technology Data Exchange (ETDEWEB)

    Dessureault-Rompre, Jacynthe, E-mail: dessureaultromj@agr.gc.c [Institute of Terrestrial Ecosystems (ITES), ETH Zurich, Universitaetstrasse 16, CH-8092 Zuerich (Switzerland); Luster, Joerg, E-mail: joerg.luster@wsl.c [Swiss Federal Institute for Forest, Snow, and Landscape Research (WSL), Zuercherstrasse 111, CH-8903 Birmensdorf (Switzerland); Schulin, Rainer, E-mail: rainer.schulin@env.ethz.c [Institute of Terrestrial Ecosystems (ITES), ETH Zurich, Universitaetstrasse 16, CH-8092 Zuerich (Switzerland); Tercier-Waeber, Mary-Lou, E-mail: marie-louise.tercier@unige.c [CABE, Department of Inorganic and Analytical Chemistry, Sciences II, University of Geneva, 30 quai Ernest Ansermet, CH-1211 Geneva 4 (Switzerland); Nowack, Bernd, E-mail: bernd.nowack@empa.c [Institute of Terrestrial Ecosystems (ITES), ETH Zurich, Universitaetstrasse 16, CH-8092 Zuerich (Switzerland); Empa - Swiss Federal Laboratories for Materials Testing and Research, Lerchenfeldstrasse 5, CH-9014 St. Gallen (Switzerland)

    2010-05-15

    By using a rhizobox micro-suction cup technique we studied in-situ mobilization and complexation of Zn and Cd in the rhizosphere of non-hyperaccumulating Thlaspi perfoliatum and two different Thlaspi caerulescens ecotypes, one of them hyperaccumulating Zn, the other Zn and Cd. The dynamic fraction (free metal ions and small labile complexes) of Zn and Cd decreased with time in the rhizosphere solution of the respective hyperaccumulating T. caerulescens ecotypes, and at the end of the experiment, it was significantly smaller than in the other treatments. Furthermore, the rhizosphere solutions of the T. caerulescens ecotypes exhibited a higher UV absorptivity than the solution of the T. perfoliatum rhizosphere and the plant-free soil. Based on our findings we suggest that mobile and labile metal-dissolved soil organic matter complexes play a key role in the rapid replenishment of available metal pools in the rhizosphere of hyperaccumulating T. caerulescens ecotypes, postulated earlier. - A mechanism that explains the rapid replenishment of metal pools accessible by hyperaccumulator plants for phytoextraction is proposed.

  18. Fatty acid profiles of ecotypes of hyperaccumulator Noccaea caerulescens growing under cadmium stress

    Czech Academy of Sciences Publication Activity Database

    Zemanová, V.; Pavlík, Milan; Kyjaková, Pavlína; Pavlíková, D.

    2015-01-01

    Roč. 180, MAY 15 (2015), s. 27-34 ISSN 0176-1617 Institutional support: RVO:61389030 ; RVO:61388963 Keywords : Heavy metals stress * Thlaspi caerulescens (J. & C. Presl) * 9,12-Octadecadienoic acid Subject RIV: CE - Biochemistry; CB - Analytical Chemistry, Separation (UOCHB-X) Impact factor: 2.971, year: 2015

  19. Metal availability and soil toxicity after repeated croppings of Thlaspi caerulescens in metal contaminated soils

    International Nuclear Information System (INIS)

    Keller, Catherine; Hammer, Daniel

    2004-01-01

    Metal phytoextraction with hyperaccumulating plants could be a useful method to decontaminate soils, but it is not fully validated yet. In order to quantify the efficiency of Cd and Zn extraction from a calcareous soil with and without Fe amendment and an acidic soil, we performed a pot experiment with three successive croppings of Thlaspi caerulescens followed by 3 months without plant and 7 weeks with lettuce. We used a combined approach to assess total extraction efficiency (2 M HNO 3 -extractable metals), changes in metal bio/availability (0.1 M NaNO 3 -extractable metals and lettuce uptake) and toxicity (lettuce biomass and the BIOMETreg] biosensor). The soil solution was monitored over the whole experiment. In the calcareous soil large Cu concentrations were probably responsible for chlorosis symptoms observed on T. caerulescens. When this soil was treated with Fe, the amount of extracted metal by T. caerulescens increased and metal availability and soil toxicity decreased when compared to the untreated soil. In the acidic soil, T. caerulescens was most efficient: Cd and Zn concentrations in plants were in the range of hyperaccumulation and HNO 3 -extractable Cd and Zn, metal bio/availability, soil toxicity, and Cd and Zn concentrations in the soil solution decreased significantly. However, a reduced Cd concentration measured in the third T. caerulescens cropping indicated a decrease in metal availability below a critical threshold, whereas the increase of dissolved Cd and Zn concentrations after the third cropping may be the early sign of soil re-equilibration. This indicates that phytoextraction efficiency must be assessed by different approaches in order not to overlook any potential hazard and that an efficient phytoextraction scheme will have to take into account the different dynamics of the soil-plant system

  20. Ranino ua uai: Palabra de cosecha de frutas silvestres

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    Hipolito Candre

    2016-01-01

    Full Text Available Este texto, transcrito de una narración del anciano Hipólito Candre, hace un inventario de los frutos silvestres que se encuentran en el monte y cómo eran aprovechados por las antiguas generaciones. También hace referencia a la colecta de miel silvestre, a la pesca con barbasco y trampas y la colecta de ranas comestibles en trampas. En las notas se da la identificación biológica de las especies mencionadas y se agrega información sobre sus épocas de fructificación y otras informaciones recogidas en el campo.

  1. Transport and detoxification of cadmium, copper and zinc in the Cd/Zn hyperaccumulator plant Thlaspi caerulescens

    OpenAIRE

    Leitenmaier, Barbara

    2010-01-01

    SummaryIn this thesis, various aspects on heavy metal accumulation by the hyperaccumulator plant Thlaspi caerulescens have been investigated. T. caerulescens belongs to the family of Brassicaceae and hyperaccumulates zinc. Its ecotype Ganges, originating from Southern France, additionally takes up cadmium actively. It is known from previous studies that hyperaccumulators have highly overexpressed metal transporters and that most of them store the metal in the vacuole of large epidermal cells....

  2. Gene expression differences between Noccaea caerulescens ecotypes help to identify candidate genes for metal phytoremediation.

    Science.gov (United States)

    Halimaa, Pauliina; Lin, Ya-Fen; Ahonen, Viivi H; Blande, Daniel; Clemens, Stephan; Gyenesei, Attila; Häikiö, Elina; Kärenlampi, Sirpa O; Laiho, Asta; Aarts, Mark G M; Pursiheimo, Juha-Pekka; Schat, Henk; Schmidt, Holger; Tuomainen, Marjo H; Tervahauta, Arja I

    2014-03-18

    Populations of Noccaea caerulescens show tremendous differences in their capacity to hyperaccumulate and hypertolerate metals. To explore the differences that could contribute to these traits, we undertook SOLiD high-throughput sequencing of the root transcriptomes of three phenotypically well-characterized N. caerulescens accessions, i.e., Ganges, La Calamine, and Monte Prinzera. Genes with possible contribution to zinc, cadmium, and nickel hyperaccumulation and hypertolerance were predicted. The most significant differences between the accessions were related to metal ion (di-, trivalent inorganic cation) transmembrane transporter activity, iron and calcium ion binding, (inorganic) anion transmembrane transporter activity, and antioxidant activity. Analysis of correlation between the expression profile of each gene and the metal-related characteristics of the accessions disclosed both previously characterized (HMA4, HMA3) and new candidate genes (e.g., for nickel IRT1, ZIP10, and PDF2.3) as possible contributors to the hyperaccumulation/tolerance phenotype. A number of unknown Noccaea-specific transcripts also showed correlation with Zn(2+), Cd(2+), or Ni(2+) hyperaccumulation/tolerance. This study shows that N. caerulescens populations have evolved great diversity in the expression of metal-related genes, facilitating adaptation to various metalliferous soils. The information will be helpful in the development of improved plants for metal phytoremediation.

  3. Combined endophytic inoculants enhance nickel phytoextraction from serpentine soil in the hyperaccumulator Noccaea caerulescens.

    Science.gov (United States)

    Visioli, Giovanna; Vamerali, Teofilo; Mattarozzi, Monica; Dramis, Lucia; Sanangelantoni, Anna M

    2015-01-01

    This study assesses the effects of specific bacterial endophytes on the phytoextraction capacity of the Ni-hyperaccumulator Noccaea caerulescens, spontaneously growing in a serpentine soil environment. Five metal-tolerant endophytes had already been selected for their high Ni tolerance (6 mM) and plant growth promoting ability. Here we demonstrate that individual bacterial inoculation is ineffective in enhancing Ni translocation and growth of N. caerulescens in serpentine soil, except for specific strains Ncr-1 and Ncr-8, belonging to the Arthrobacter and Microbacterium genera, which showed the highest indole acetic acid production and 1-aminocyclopropane-1-carboxylic acid-deaminase activity. Ncr-1 and Ncr-8 co-inoculation was even more efficient in promoting plant growth, soil Ni removal, and translocation of Ni, together with that of Fe, Co, and Cu. Bacteria of both strains densely colonized the root surfaces and intercellular spaces of leaf epidermal tissue. These two bacterial strains also turned out to stimulate root length, shoot biomass, and Ni uptake in Arabidopsis thaliana grown in MS agar medium supplemented with Ni. It is concluded that adaptation of N. caerulescens in highly Ni-contaminated serpentine soil can be enhanced by an integrated community of bacterial endophytes rather than by single strains; of the former, Arthrobacter and Microbacterium may be useful candidates for future phytoremediation trials in multiple metal-contaminated sites, with possible extension to non-hyperaccumulator plants.

  4. Combined endophytic inoculants enhance nickel phytoextraction from serpentine soil in the hyperaccumulator Noccaea caerulescens

    Directory of Open Access Journals (Sweden)

    Giovanna eVisioli

    2015-08-01

    Full Text Available This study assesses the effects of specific bacterial endophytes on the phytoextraction capacity of the Ni-hyperaccumulator Noccaea caerulescens, spontaneously growing in a serpentine soil environment. Five metal-tolerant endophytes had already been selected for their high Ni tolerance (6 mM and plant growth promoting ability. Here we demonstrate that individual bacterial inoculation is ineffective in enhancing Ni translocation and growth of N. caerulescens in serpentine soil, except for specific strains Ncr-1 and Ncr-8, belonging to the Arthrobacter and Microbacterium genera, which showed the highest IAA production and ACC-deaminase activity. Ncr-1 and Ncr-8 co-inoculation was even more efficient in promoting plant growth, soil Ni removal and translocation of Ni, together with that of Fe, Co and Cu. Bacteria of both strains densely colonised the root surfaces and intercellular spaces of leaf epidermal tissue. These two bacterial strains also turned out to stimulate root length, shoot biomass and Ni uptake in Arabidopsis thaliana grown in MS agar medium supplemented with Ni. It is concluded that adaptation of N. caerulescens in highly Ni-contaminated serpentine soil can be enhanced by an integrated community of bacterial endophytes rather than by single strains; of the former, Arthrobacter and Microbacterium may be useful candidates for future phytoremediation trials

  5. 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,...

  6. Phytoextraction of cadmium and zinc from arable soils amended with sewage sludge using Thlaspi caerulescens: Development of a predictive model

    Energy Technology Data Exchange (ETDEWEB)

    Maxted, A.P. [School of Biosciences, University of Nottingham, Biology Building, University Park, Nottingham NG7 2RD (United Kingdom); Black, C.R. [School of Biosciences, University of Nottingham, Sutton Bonington Campus, Loughborough LE12 5RD (United Kingdom); West, H.M.; Crout, N.M.J. [School of Biosciences, University of Nottingham, Biology Building, University Park, Nottingham NG7 2RD (United Kingdom); McGrath, S.P. [Rothamsted Research, Harpenden, Hertfordshire AL5 2JQ (United Kingdom); Young, S.D. [School of Biosciences, University of Nottingham, Biology Building, University Park, Nottingham NG7 2RD (United Kingdom)], E-mail: scott.young@nottingham.ac.uk

    2007-12-15

    The objectives of this study were to assess the potential for using Thlaspi caerulescens as a phytoextraction plant and develop a user-advice model, which can predict the frequency of phytoextraction operation required under prescribed conditions. Pot and field trials were conducted using soil collected from a dedicated sewage sludge disposal facility. Soil amendments (sulphuric acid, potassium chloride and EDTA) intended to increase Cd solubility were also tested. Predictive models of Cd and Zn uptake were developed which were able to reproduce the observed pH-dependence of Cd uptake with an apparent maximum around pH 6. Chemical treatments did not significantly increase the uptake of Cd. The periodic use of phytoextraction with T. caerulescens to maintain soils below statutory metal concentration limits, when modern sewage sludges are repeatedly applied, seems very attractive given the non-intrusive and cost-effective nature of the process. The major limitations lie with the large-scale husbandry of T. caerulescens. - A predictive model of Cd and Zn uptake by Thlaspi caerulescens is presented as a management tool in the phytoextraction of arable soils receiving sewage sludge.

  7. Phytoextraction of cadmium and zinc from arable soils amended with sewage sludge using Thlaspi caerulescens: Development of a predictive model

    International Nuclear Information System (INIS)

    Maxted, A.P.; Black, C.R.; West, H.M.; Crout, N.M.J.; McGrath, S.P.; Young, S.D.

    2007-01-01

    The objectives of this study were to assess the potential for using Thlaspi caerulescens as a phytoextraction plant and develop a user-advice model, which can predict the frequency of phytoextraction operation required under prescribed conditions. Pot and field trials were conducted using soil collected from a dedicated sewage sludge disposal facility. Soil amendments (sulphuric acid, potassium chloride and EDTA) intended to increase Cd solubility were also tested. Predictive models of Cd and Zn uptake were developed which were able to reproduce the observed pH-dependence of Cd uptake with an apparent maximum around pH 6. Chemical treatments did not significantly increase the uptake of Cd. The periodic use of phytoextraction with T. caerulescens to maintain soils below statutory metal concentration limits, when modern sewage sludges are repeatedly applied, seems very attractive given the non-intrusive and cost-effective nature of the process. The major limitations lie with the large-scale husbandry of T. caerulescens. - A predictive model of Cd and Zn uptake by Thlaspi caerulescens is presented as a management tool in the phytoextraction of arable soils receiving sewage sludge

  8. The changes of contents of selected free amino acids associated with cadmium stress in Noccaea caerulescens and Arabidopsis halleri

    Czech Academy of Sciences Publication Activity Database

    Zemanová, V.; Pavlík, Milan; Pavlíková, D.; Tlustoš, P.

    2013-01-01

    Roč. 59, č. 9 (2013), s. 417-422 ISSN 1214-1178 Institutional research plan: CEZ:AV0Z50380511 Keywords : heavy metals * nitrogen-transport amino acids * Thlaspi caerulescens Subject RIV: EF - Botanics Impact factor: 1.113, year: 2013 http://www.agriculturejournals.cz/publicFiles/100270.pdf

  9. Cadmium Induced Changes of Proline in Two Ecotypes of Thlaspi Caerulescens

    Directory of Open Access Journals (Sweden)

    Zemanová V.

    2013-04-01

    Full Text Available A Thlaspi caerulescens (J. & C. PRESL was used to study the effect of cadmium on the content of free amino acids and ability accumulation of Cd in ecotypes of this plant species. In pot experiment two ecotypes T. caerulescens were used: Ganges ecotype from France and Mežica ecotype from Slovenia. The plants were grown in soil (chernozem – Suchdol spiked with NPK and three different concentration of Cd: 30, 60 and 90 mg/kg. The content of Cd was measured in the above-ground biomass and roots using ICP-OES. Accumulation of Cd was higher in the Mežica ecotype in contrast to the low Cd-accumulating the Ganges ecotype. Analyses of free amino acids contents were measured by GC-MS method. The content of free amino acids in above-ground biomass of the Mežica ecotype declined progressively with increasing concentrations of Cd. Opposite trend was observed in roots of this ecotype. The increase of free amino acids contents in above-ground biomass and roots of the Ganges ecotype were detected. The results of specific amino acids free proline showed increased content in plant biomass with increasing Cd contamination of soil. A statistically significant increase was observed between control plants (0 mg/kg Cd and variant Cd3 (90 mg/kg Cd for both ecotypes. The statistically significant decrease of free proline was observed in the Mežica ecotype roots. Opposite trend was observed in roots of Ganges ecotype - increasing trend of free proline content. These results indicate a correlation between content of Cd and content of free proline in different parts of the plant. We can speculate that the mechanism of Cd hyperaccumulation and metabolism of free proline are not identical in ecotypes of this species.

  10. Growth and Cadmium Phytoextraction by Swiss Chard, Maize, Rice, Noccaea caerulescens, and Alyssum murale in Ph Adjusted Biosolids Amended Soils.

    Science.gov (United States)

    Broadhurst, C Leigh; Chaney, Rufus L; Davis, Allen P; Cox, Albert; Kumar, Kuldip; Reeves, Roger D; Green, Carrie E

    2015-01-01

    Past applications of biosolids to soils at some locations added higher Cd levels than presently permitted. Cadmium phytoextraction would alleviate current land use constraints. Unamended farm soil, and biosolids amended farm and mine soils were obtained from a Fulton Co., IL biosolids management facility. Soils contained 0.16, 22.8, 45.3 mg Cd kg(-1) and 43.1, 482, 812 mg Zn kg(-1) respectively with initial pH 6.0, 6.1, 6.4. In greenhouse studies, Swiss chard (Beta vulgaris var. cicla), a Cd-accumulator maize (inbred B37 Zea mays) and a southern France Cd-hyperaccumulator genotype of Noccaea caerulescens were tested for Cd accumulation and phytoextraction. Soil pH was adjusted from ∼5.5-7.0. Additionally 100 rice (Oryza sativa) genotypes and the Ni-hyperaccumulator Alyssum murale were screened for potential phytoextraction use. Chard suffered phytotoxicity at low pH and accumulated up to 90 mg Cd kg(-1) on the biosolids amended mine soil. The maize inbred accumulated up to 45 mg Cd kg(-1) with only mild phytotoxicity symptoms during early growth at pH>6.0. N. caerulescens did not exhibit phytotoxicity symptoms at any pH, and accumulated up to 235 mg Cd kg(-1) in 3 months. Reharvested N. caerulescens accumulated up to 900 mg Cd kg(-1) after 10 months. Neither Alyssum nor 90% of rice genotypes survived acceptably. Both N. caerulescens and B37 maize show promise for Cd phytoextraction in IL and require field evaluation; both plants could be utilized for nearly continuous Cd removal. Other maize inbreds may offer higher Cd phytoextraction at lower pH, and mono-cross hybrids higher shoot biomass yields. Further, maize grown only for biomass Cd maximum removal could be double-cropped.

  11. COMERCIO DE FAUNA SILVESTRE EN COLOMBIA WILDLIFE TRADE IN COLOMBIA

    Directory of Open Access Journals (Sweden)

    Néstor Javier Mancera Rodríguez

    2008-12-01

    Full Text Available Este trabajo ofrece un panorama sobre las actividades relacionadas con el comercio de bienes derivados de las especies de fauna silvestre en Colombia, abordando el tema desde el desarrollo que ha tenido su actividad productiva, el aprovechamiento extractivo, así como la dinámica de su comercio legal e ilegal en el país y el desarrollo y promoción de alternativas productivas sustentadas en su aprovechamiento. Se analizó la información secundaria de entidades como el Ministerio de Ambiente, Vivienda y Desarrollo Territorial, las Corporaciones Autónomas Regionales y Autoridades Ambientales Urbanas, el Instituto Colombiano de Desarrollo Rural-INCODER, las Autoridades Policiales, los Institutos de Investigación, el Departamento Administrativo Nacional de Estadística, la Dirección de Impuestos y Aduanas Nacionales-DIAN, el Ministerio de Comercio, Industria y Turismo, y PROEXPORT. entre otras. En Colombia, el comercio de especies de fauna silvestre está centrado principalmente en la extracción de ejemplares de forma ilegal, lo cual ha generado desequilibrios en las poblaciones naturales y ha repercutido en el deterioro de la dinámica de los ecosistemas. El comercio legal de fauna silvestre se basa en la producción de unas pocas especies entre las que se destacan la babilla (Caiman crocodilus, el chigüiro (Hydrochaeris hydrochaeris, cerca de 200 especies de peces ornamentales y en menor medida el lobo pollero (Tupinambis nigropunctatus, la iguana (Iguana iguana, la boa (Boa constrictor, escarabajos (Dynastes hercules y mariposas. En el país no se tiene información exacta sobre el número de incautaciones realizadas en los operativos de control al tráfico ilegal de fauna, y no existe un conocimiento de la dinámica de este comercio ilegal.This work offers a current view on the activities related to the trade of derived from the wildlife species in Colombia, approaching the topic from the development that has had its productive activity

  12. Protein Biochemistry and Expression Regulation of Cadmium/Zinc Pumping ATPases in the Hyperaccumulator Plants Arabidopsis halleri and Noccaea caerulescens

    Directory of Open Access Journals (Sweden)

    Seema Mishra

    2017-05-01

    Full Text Available P1B-ATPases are decisive for metal accumulation phenotypes, but mechanisms of their regulation are only partially understood. Here, we studied the Cd/Zn transporting ATPases NcHMA3 and NcHMA4 from Noccaea caerulescens as well as AhHMA3 and AhHMA4 from Arabidopsis halleri. Protein biochemistry was analyzed on HMA4 purified from roots of N. caerulescens in active state. Metal titration of NcHMA4 protein with an electrochromic dye as charge indicator suggested that HMA4 reaches maximal ATPase activity when all internal high-affinity Cd2+ binding sites are occupied. Although HMA4 was reported to be mainly responsible for xylem loading of heavy metals for root to shoot transport, the current study revealed high expression of NcHMA4 in shoots as well. Further, there were additional 20 and 40 kD fragments at replete Zn2+ and toxic Cd2+, but not at deficient Zn2+ concentrations. Altogether, the protein level expression analysis suggested a more multifunctional role of NcHMA4 than previously assumed. Organ-level transcription analysis through quantitative PCR of mRNA in N. caerulescens and A. halleri confirmed the strong shoot expression of both NcHMA4 and AhHMA4. Further, in shoots NcHMA4 was more abundant in 10 μM Zn2+ and AhHMA4 in Zn2+ deficiency. In roots, NcHMA4 was up-regulated in response to deficient Zn2+ when compared to replete Zn2+ and toxic Cd2+ treatment. In both species, HMA3 was much more expressed in shoots than in roots, and HMA3 transcript levels remained rather constant regardless of Zn2+ supply, but were up-regulated by 10 μM Cd2+. Analysis of cellular expression by quantitative mRNA in situ hybridisation showed that in A. halleri, both HMA3 and HMA4 mRNA levels were highest in the mesophyll, while in N. caerulescens they were highest in the bundle sheath of the vein. This is likely related to the different final storage sites for hyperaccumulated metals in both species: epidermis in N. caerulescens, mesophyll in A. halleri.

  13. FLUJO DE GENES ENTRE FRIJOL COMÚN Y SILVESTRE EN COSTA RICA

    Directory of Open Access Journals (Sweden)

    N\\u00E9stor Chaves-Barrantes

    2009-01-01

    Full Text Available Con el objetivo de analizar el flujo de genes entre frijol común silvestre y cultivado, se determinó el porcentaje de alogamia en condiciones naturales de crecimie nto del frijol silvestre y en estación experimental. En el 2004 se evaluó el cruzamie nto natural entre frijol silvestre mexicano G23511A (Phaseolus vulgaris L. y la línea blanca PAN 68, en la Estación Experimental Fabio Baudrit de la Universidad de Costa Ri ca en Alajuela. Para ello se sembraron dos parcelas experimentales; cada una constó de dos bloques de PAN 68 de 10 surcos (15 m de largo y espacia dos 0,6 m. Entre los bloques y en el borde superior de los mismos, se sembraron tres surcos de frijol silvestre como donantes de polen. Se numeraron las hileras y las plantas de cada una en los bloques de frijol blanco. En Quircot de Ca rtago (área donde crece en forma natural P. vulgaris silvestre, en el 2005 y 2006, se sembraron plantas de frijol comercia l (Vainica de Palo a lo largo de seis sitios junto a las poblaciones de frijol silvestre. En ambas localidades la floración de silvestres y comerciales fue coincidente. Se cosechó toda la semilla de los ensayos y se germinó en bandejas, determinando el porcentaje de alogamia por medio del color morado del hip ocotilo, indicativo de aquellas plántulas cruzadas. En Alajuela el porcentaje de cruza varió entre 0,007 y 0,028 %; mie ntras que en Quircot, entre 0 y 0,199 %.

  14. Guía para restricción física de fauna silvestre

    OpenAIRE

    Torres-Chaparro, María Yanneth; Quintero-Sánchez, Vladimir

    2016-01-01

    Esta guía presenta los protocolos y actividades que deben realizarse durante la manipulación de fauna silvestre en los Centros de Atención y Valoración (CAV). Como bien es sabido, el tráfico de fauna silvestre es una actividad ilícita que trae consigo unos problemas profundos de pérdida de biodiversidad. Dentro de las estrategias de control de tráfico de fauna se realizan actividades de control y monitoreo, presentándose situaciones en las cuales un gran número de animales son rescatados, dec...

  15. 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...

  16. Expression differences for genes involved in lignin, glutathione and sulphate metabolism in response to cadmium in Arabidopsis thaliana and the related Zn/Cd-hyperaccumulator Thlaspi caerulescens

    NARCIS (Netherlands)

    van de Mortel, Judith E.; Schat, Henk; Moerland, Perry D.; Ver Loren van Themaat, Emiel; van der Ent, Sjoerd; Blankestijn, Hetty; Ghandilyan, Artak; Tsiatsiani, Styliani; Aarts, Mark G. M.

    2008-01-01

    Cadmium (Cd) is a widespread, naturally occurring element present in soil, rock, water, plants and animals. Cd is a non-essential element for plants and is toxic at higher concentrations. Transcript profiles of roots of Arabidopsis thaliana (Arabidopsis) and Thlaspi caerulescens plants exposed to Cd

  17. Responses to Cd Stress in Two Noccaea Species (Noccaea praecox and Noccaea caerulescens) Originating from Two Contaminated Sites in Mezica, Slovenia and Redlschlag, Austria

    Czech Academy of Sciences Publication Activity Database

    Zemanová, V.; Pavlík, Milan; Pavlíková, D.; Hnilička, F.; Vondráčková, S.

    2016-01-01

    Roč. 70, č. 3 (2016), s. 464-474 ISSN 0090-4341 Institutional support: RVO:61389030 Keywords : HYPERACCUMULATOR THLASPI-CAERULESCENS * CADMIUM STRESS * AMINO - ACIDS Subject RIV: DK - Soil Contamination ; De-contamination incl. Pesticides Impact factor: 2.467, year: 2016

  18. IMPACTOS DE LAS CARRETERAS SOBRE LA FAUNA SILVESTRE Y SUS PRINCIPALES MEDIDAS DE MANEJO

    Directory of Open Access Journals (Sweden)

    María del Pilar Arroyave

    Full Text Available El objetivo de este artículo es presentar el impacto de los proyectos viales sobre la fauna silvestre y evaluar las medidas de manejo de estos efectos. Se revisó y analizó la información de diversos estudios realizados en el mundo, al igual que algunos estudios de impacto ambiental de carreteras que se han desarrollado en Antioquia. Se encontró que los principales impactos son el atropellamiento, el aislamiento de poblaciones y el cambio en los patrones reproductivos de la fauna; esto trae como consecuencia la disminución de las poblaciones de especies de fauna silvestre. También se plantean las estrategias comúnmente implementadas para el manejo de los impactos.

  19. [Reseñas Bibliográficas] Atlas de la flora vascular silvestre de Burgos

    Directory of Open Access Journals (Sweden)

    Iñaki Aizpuru

    2005-01-01

    Full Text Available Es una reseña bibliográfica de la obra, Atlas de la flora vascular silvestre de Burgos / Alejandre Sáenz, J.M. García-López, L. Marín Padellano, G. Mateo Sanz, E. Miguélez del coso, C. Molina Martín, G. Montamarta Prieto, S. Patino Sánchez, M.A. Pinto Cebrián 6 J. Valencia Janices.

  20. Evaluación del riesgo de las carreteras nacionales para la fauna silvestre y el uso de ciencia ciudadana como herramienta para el monitoreo de fauna silvestre atropellada en Costa Rica

    OpenAIRE

    Gutiérrez Sanabria, Diego R.

    2017-01-01

    Evalua el riesgo de las carreteras nacionales para la fauna silvestre y el uso de ciencia ciudadana como herramienta para el monitoreo de fauna silvestre atropellada en Costa Rica. A partir de ahí se desarrolló y evaluó el uso de una aplicación informática en una plataforma web ya existente, para ser usado por cualquier smartphone, lo cual, representa una propuesta innovadora y por último, se usaron datos provenientes de esta aplicación, con una de las especies que más registros de atropellos...

  1. ESTUDIO EPIDEMIOLÓGICO DEL CONEJO SILVESTRE Sylvilagus brasiliensis EN EL PARQUE NACIONAL NATURAL LOS NEVADOS

    OpenAIRE

    Insuasty Osorio, Julián Alejandro; Ramírez Benavides, Ginés Fernando; Mejía Morales, Luis Miguel

    2008-01-01

    Este estudio epidemiológico se realizó con el objeto de identificar los agentes etiológicos responsables de las afecciones presentes en las poblaciones de conejo silvestre Sylvilagus brasiliensis, en la zona amortiguadora del Parque Nacional Natural Los Nevados. Con un enfoque en Medicina de la Conservación, bajo el concepto "Triada Ecológica de la Enfermedad" y por medio del análisis multivariado "Análisis Factorial de Correspondencias Múltiples" con el programa "SPAD-WIN"; se determinó y an...

  2. DIAGNÓSTICO JURÍDICO SOBRE EL DECOMISO Y MANEJO POSTDECOMISO DE FAUNA SILVESTRE EN EL DEPARTAMENTO DEL CHOCÓ

    OpenAIRE

    Lisneider Hinestroza Cuesta; Marisela Mena Valencia; Kelly Johana Palacios Sánchez

    2011-01-01

    En este artículo se presenta un estudio de carácter descriptivo sobre los decomisos y el manejo postdecomiso de fauna silvestre en el departamento del Chocó utilizado como corredor para el tráfico y comercialización ilegal; se analizan, a partir del marco jurídico colombiano, la definición de fauna silvestre, decomiso y sus consecuencias jurídicas. Entre el 2005 y marzo del 2011 se realizaron en el Chocó 904 decomisos: 316 aves, 321 reptiles y 264 de mamíferos, 1 anfibio, 1 arácnido y 1 pez. ...

  3. Plasticidad fenotípica de poblaciones de chile silvestre (Capsicum annuum var. glabriusculum) en respuesta a disponibilidad de luz

    OpenAIRE

    Hernández-Verdugo, Sergio; González-Sánchez, Ramón A.; Porras, Flor; Parra-Terraza, Saúl; Valdez-Ortiz, Angel; Pacheco-Olvera, Antonio; López-España, Ricardo Guillermo

    2015-01-01

    La plasticidad fenotípica permite a las plantas lidiar con ambientes heterogéneos. Capsicum annuum silvestre es un valioso recurso genético que habita en sitios que difieren en la disponibilidad de luz. Evaluamos la variación genética entre poblaciones, la plasticidad fenotípica y su variación en respuesta a tres niveles de luz (alto, 100%; medio, 50%; y bajo, 25% de luz solar) de cinco poblaciones de Capsicum annuum silvestre del noroeste de México. Las características medidas fueron: altura...

  4. Soil geochemical factors regulate Cd accumulation by metal hyperaccumulating Noccaea caerulescens (J. Presl & C. Presl) F.K. Mey in field-contaminated soils.

    Science.gov (United States)

    Rosenfeld, Carla E; Chaney, Rufus L; Martínez, Carmen E

    2018-03-01

    Cadmium contamination in soil is a substantial global problem, and of significant concern due to high food-chain transfer. Cadmium hyperaccumulators are of particular interest because of their ability to tolerate and take up significant amounts of heavy metal pollution from soils. One particular plant, Noccaea caerulescens (formerly, Thlaspi caerulescens), has been extensively studied in terms of its capacity to accumulate heavy metals (specifically Zn and Cd), though these studies have primarily utilized hydroponic and metal-spiked model soil systems. We studied Cd and nutrient uptake by two N. caerulescens ecotypes, Prayon (Zn-only hyperaccumulator) and Ganges (Zn- and Cd-hyperaccumulator) in four long-term field-contaminated soils. Our data suggest that individual soil properties such as total soil Cd, Zn:Cd molar ratio, or soil pH do not accurately predict Cd uptake by hyperaccumulating plants. Additionally, total Cd uptake by the hyperaccumulating Ganges ecotype was substantially less than its physiological capacity, which is likely due to Cd-containing solid phases (primarily iron oxides) and pH that play an important role in regulating and limiting Cd solubility. Increased P accumulation in the Ganges leaves, and greater plant Fe accumulation from Cd-containing soils suggests that rhizosphere alterations via proton, and potentially organic acid, secretion may also play a role in nutrient and Cd acquisition by the plant roots. The current study highlights the role that soil geochemical factors play in influencing Cd uptake by hyperaccumulating plants. While these plants may have high physiological potential to accumulate metals from contaminated soils, individual soil geochemical factors and the plant-soil interactions in that soil will dictate the actual amount of phytoextractable metal. This underlines the need for site-specific understanding of metal-containing solid phases and geochemical properties of soils before undertaking phytoextraction efforts

  5. Influência de temperatura, luz e giberelina na germinação de sementes de Thlaspi caerulescens J. Presl & C. Presl (Brassicaceae

    Directory of Open Access Journals (Sweden)

    Marcelo de Almeida Guimarães

    2010-06-01

    Full Text Available Thlaspi caerulescens é espécie hiperacumuladora de metais como Cd2+, Ni2+ e Zn2+, considerada como uma plantamodelo para estudar a acumulação e tolerância a metais pesados. No entanto, a baixa produção de sementes em nossas condições climáticas tornam necessária a determinação de condições que possam maximizar a germinação e o vigor de suas sementes. Para identificar as melhores condições para a germinação, sementes de T. caerulescens foram colocadas na presença (15 mmol.m-2.s-1, 8 h luz/16 h escuro ou ausência de luz nas temperaturas de 10, 15, 20 e 25 ºC, em papel germitest previamente umedecido com solução de ácido giberélico (GA3 a 0,05% ou água destilada. Foram avaliados a porcentagem de germinação (%G e o índice de velocidade de germinação (IVG. Maior porcentagem de germinação (66% foi observada nos tratamentos com GA3 e temperaturas de 15 e 20 ºC, na presença de luz. Maiores valores do IVG foram obtidos com a utilização de GA3 nas temperaturas de 15 e 20 ºC, tanto na presença quanto na ausência de luz. Maiores germinação e IVG de T. caerulescens foram observados com uso de GA3 na presença de luz nas temperaturas de 15 e 20 ºC.

  6. A tutela da fauna silvestre como efetivação do direito fundamental ao meio ambiente

    Directory of Open Access Journals (Sweden)

    Emerson Bortolozi

    2018-03-01

    Full Text Available Esta pesquisa tem por objeto a análise da efetivação do direito fundamental ao meio ambiente sob a ótica da tutela à fauna silvestre, com base na Constituição Federal e em normas infraconstitucionais. Como se sabe, a Constituição de 1988 é um marco importantíssimo na evolução da defesa jurídica do meio ambiente, tendo desencadeado o surgimento de uma ampla legislação voltada à defesa de valores ambientais e, particularmente, da fauna silvestre. A partir da ótica constitucional e da legislação de proteção à fauna silvestre, como a Lei que cria Política Nacional do Meio Ambiente, a Lei que cria o Sistema Nacional de Unidades de Conservação – SNUC, a Lei de Uso Científico de Animais, a Lei de Rodeios e, em especial, a Lei de Proteção à Fauna, que foi recepcionada pela Constituição, é que se compõe o arsenal de ferramentas jurídicas que realizam a efetivação do direito fundamental ao meio ambiente animal. Por meio desse exame, identifica-se que a tutela da fauna silvestre acaba significando forma de efetivação do direito fundamental ao Meio Ambiente

  7. Bravo, Silvestre!

    Science.gov (United States)

    Kline, Harriet

    1971-01-01

    Discussion of a successful Federally funded program designed to teach English to Mexican-Americans in Edinburg, Texas. The author credited this success to the multi-media approach of teaching languages. (AF)

  8. Relación heterófilo/linfocito, frecuencia espontánea de eritrocitos micronucleados y prolongaciones nucleares en el ganso nevado (Chen caerulescens: Una propuesta como posible biomonitor de estrés y genotóxicos ambientales

    Directory of Open Access Journals (Sweden)

    Martha C. Martínez Quintanilla

    2017-04-01

    Full Text Available Existen organismos silvestres que son altamente vulnerables ante estresores antropogénicos y naturales, estos organismos pueden ser de utilidad para evaluar la salud ambiental mediante diferentes indicadores confiables, sencillos, rápidos, económicos para determinar y si es posible reducir estos efectos negativos. En este estudio proponemos al ganso nevado (Chen caerulescens como posible biomonitor de estrés y genotóxicos ambientales mediante la relación heterófilo/linfocito (H/L, la prueba de micronúcleos (EMN, prolongaciones nucleares en eritrocitos (EPN y eritrocitos policromáticos (EPC. Durante la temporada de caza (2012-2013 en el humedal de Málaga, Durango, México, colectamos 18 organismos. Los eritrocitos fueron las células más abundantes, de núcleo y morfología elípticos, de tamaño 12.68 ± 0.89 µm. Observamos heterófilos (11.07±1.32 µm, eosinófilos (9.67±1.26 µm, basófilos (5.75 ± 0.78 µm, monocitos (10.49±1.36 µm y linfocitos (6.53±1.0 µm. No identificamos alteración en las proporciones ni en la morfología de leucocitos, sin embargo, es necesario un mayor número de organismos para establecer los parámetros sanguíneos de base normal para esta especie. La relación h/l fue de 0.41 ± 0.11 este valor es similar a lo reportado para esta y otras especies de aves consideradas como sanas. Establecimos la frecuencia basal de EMN (2.6±1.45, epn (249.2 ± 89.74 y EPC (156.5 ± 50. El ganso nevado es un organismo que se perfila como buen candidato a biomonitor ambiental debido a la frecuencia basal de su relación H/L, EMN, EPN y EPC, pero debe probarse en condiciones estandarizadas y a través de estudios en zonas con y sin contaminación.

  9. Soil solution Zn and pH dynamics in non-rhizosphere soil and in the rhizosphere of Thlaspi caerulescens grown in a Zn/Cd-contaminated soil.

    Science.gov (United States)

    Luo, Y M; Christie, P; Baker, A J

    2000-07-01

    Temporal changes in soil solution properties and metal speciation were studied in non-rhizosphere soil and in the rhizosphere of the hyperaccumulator Thlaspi caerulescens J. & C. Presl (population from Prayon, Belgium) grown in a Zn- and Cd-contaminated soil. This paper focuses on soil solution Zn and pH dynamics during phytoextraction. The concentration of Zn in both non-rhizosphere and rhizosphere soil solutions decreased from 23 mg/l at the beginning to 2 mg/l at the end of the experiment (84 days after transplanting of seedlings), mainly due to chemical sorption. There was no significant difference in overall Zn concentration between the planted and the unplanted soil solutions (P > 0.05). Soil solution pH decreased initially and then increased slightly in both planted and unplanted soil zones. From 60 to 84 days after transplanting, the pH of the rhizosphere soil solution was higher than that of non-rhizosphere soil solution (P<0.05). Zn uptake by the hyperaccumulator plants was 8.8 mg per pot (each containing 1 kg oven-dry soil) on average. The data indicate that the potential of T. caerulescens to remove Zn from contaminated soil may not be related to acidification of the rhizosphere.

  10. Orientalismos peninsulares en el levante andaluz. Nombres y usos de algunas plantas silvestres

    Directory of Open Access Journals (Sweden)

    Torres Montes, Francisco

    2000-06-01

    Full Text Available The author describes sorne wild plants from the provinces of Almería, Granada and Jaén (Andalusia, Spain that have folk names from Eastern Iberia. For each plant he provides the scientific and folk name, the isoglottic line and the lexical arca. He also informs about the use of these plants in folk and household medecine, religious rites, animal husbandry, etc.En este estudio se presentan algunas plantas silvestres de Almería, Granada y Jaén cuyos nombres vulgares proceden del oriente peninsular. De cada planta se da, junto al nombre vulgar y científico, la isoglosa o límite de los orientalismos y sus correspondientes áreas léxicas. Al mismo tiempo se hace el estudio etnográfico de sus usos en la medicina popular o doméstica, ritos religiosos, ganadería, etc.

  11. Intestinal protozoan parasites with zoonotic potential in birds.

    Science.gov (United States)

    Marietto-Gonçalves, G A; Fernandes, T M; Silva, R J; Lopes, R S; Andreatti Filho, R L

    2008-10-01

    The aim of this study was to evaluate the occurrence of potentially zoonotic intestinal protozoan infections in exotic and wildlife Brazilian birds. Fecal samples from 207 birds of 45 species were examined. Infections by Balantidium sp., Entamoeba sp., and Blastocystis sp. were observed in 17 individuals (8.2%) of Gnorimopsar chopi, Oryzoborus angolensis, Sporophila caerulescens, Ramphastos toco, Aratinga leucophtalmus, and Pavo cristatus.

  12. Pterocladiella caerulescens (Kützin Santelices & Hommersand (RHODOPHYTA, UNA NUEVA ADICIÓN PARA LA FLORA FICOLÓGICA DEL ESTADO NUEVA ESPARTA (VENEZUELA | Pterocladiella caerulescens (Kützin Santelices & Hommersand (RHODOPHYTA, A NEW ADDITION TO THE PHYCOLOGICAL FLORA OF NUEVA ESPARTA STATE (VENEZUELA

    Directory of Open Access Journals (Sweden)

    Julio César Rodríguez Reyes,

    2016-10-01

    Full Text Available El alga rodofita, Pterocladiella caerulescens, ha sido poco estudiada en Venezuela, a pesar de que a nivel mundial se ha determinado su alto rendimiento en la producción de agar. En este trabajo, se describen las estructuras vegetativa y reproductiva (cistocarpo, tetrasporangio y espermatangio de una población de P. caerulescens ubicada en los sustratos rocosos de la zona intermareal de la bahía de Boca de Río, Isla de Margarita, durante el mes de noviembre 2013 a mayo de 2014. Doscientos ejemplares, formando agrupaciones cespitosas, fueron recolectados con estructuras de fijación, realizándose el desprendimiento con la ayuda de cuchillo y espátulas, preservándolas en solución de formaldehido al 4% v/v con agua de mar y almacenadas en frascos de vidrio. El análisis mediante microscopía óptica reveló en los ejemplares femeninos, la presencia de un cistocarpo solitario con una placenta unilocular en cuyo centro de la cavidad se dispone el carpogonio, lo que permitió la identificación de la especie como Pterocladiella caerulescens (Kützin Santelices & Hommersand, perteneciente a la familia Pterocladiaceae. Esta especie no había sido registrada en la zona marino-costera del estado Nueva Esparta, siendo identificado por primera vez en los estados Falcón y Carabobo, posteriormente en el estado Sucre, por lo que con este registro se amplía el área de distribución de la misma en Venezuela.

  13. Febre amarela silvestre: reemergencia de transmissao no estado de Sao Paulo, Brasil, 2009

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    Melissa Mascheretti

    2013-10-01

    Full Text Available OBJETIVO Descrever a investigação do surto de febre amarela silvestre e as principais medidas de controle realizadas no estado de São Paulo. MÉTODOS Estudo descritivo do surto de febre amarela silvestre na região sudoeste do estado, entre fevereiro e abril de 2009. Foram avaliados casos suspeitos e confirmados em humanos e primatas não humanos. A investigação entomológica, em ambiente silvestre, envolveu captura em solo e copa de árvore para identificação das espécies e detecção de infecção natural. Foram realizadas ações de controle de Aedes aegypti em áreas urbanas. A vacinação foi direcionada para residentes dos municípios com confirmação de circulação viral e nos municípios contíguos, conforme recomendação nacional. RESULTADOS Foram confirmados 28 casos humanos (letalidade 39,3% em áreas rurais de Sarutaiá, Piraju, Tejupá, Avaré e Buri. Foram notificadas 56 mortes de primatas não humanos, 91,4% do gênero Alouatta sp . A epizootia foi confirmada laboratorialmente em dois primatas não humanos, sendo um em Buri e outro em Itapetininga. Foram coletados 1.782 mosquitos, entre eles Haemagogus leucocelaenus , Hg. janthinomys/capricornii , Sabethes chloropterus , Sa. purpureus e Sa. undosus . O vírus da febre amarela foi isolado de um lote de Hg. leucocelaenus procedente de Buri. A vacinação foi realizada em 49 municípios, com 1.018.705 doses aplicadas e o registro de nove eventos adversos graves pós-vacinação. CONCLUSÕES Os casos humanos ocorreram entre fevereiro e abril de 2009 em áreas sem registro de circulação do vírus da febre amarela há mais de 60 anos. A região encontrava-se fora da área com recomendação de vacinação, com alto percentual da população suscetível. A adoção oportuna de medidas de controle permitiu a interrupção da transmissão humana em um mês, assim como a confirmação da circulação viral em humanos, primatas não humanos e mosquitos. Os isolamentos

  14. Frutos tropicais silvestres e polpas de frutas congeladas: atividade antioxidante, polifenóis e antocianinas

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    Kuskoski Eugenia Marta

    2006-01-01

    Full Text Available Os sucos de frutas tropicais conquistam cada vez mais o mercado consumidor, sendo o Brasil um dos principais produtores. Existe grande diversidade de produtos derivados de frutos e constante inserção de novos produtos no mercado de consumo, os quais, na maioria das vezes, ainda não foram devidamente pesquisados com respeito às suas propriedades e atividades benéficas à saúde. Neste trabalho, objetiva-se determinar algumas propriedades de frutos tropicais silvestres in natura e polpas de frutos comercializados congelados. Para determinar a atividade antioxidante, utilizou-se o método do radical 2,2-difeniL-1-picrilhidrazilo (DPPH.; para determinar os polifenóis totais, o método de Folin-Ciocalteu e, para as antocianinas, o método da diferença de pH. As polpas de frutas analisadas foram de amora, uva, açaí, goiaba, morango, acerola, abacaxi, manga, graviola, cupuaçu e maracujá; e os frutos silvestres, jambolão e baguaçu. Representada em TEAC (atividade antioxidante equivalente a Trolox, a atividade antioxidante global das polpas oscila entre mínimos e máximos 0,5 e 53,2mimol g-1, enquanto que, representada em VCEAC (atividade antioxidante equivalente a vitamina C, entre mínimos e máximos de 64,8 e 1198,9mg100g-1. Para os extratos de polpa dos frutos in natura, a atividade antioxidante oscila entre 13,3 e 111,2mimol g-1 (TEAC e entre 42,8 e 2533,1mg 100g-1 (VCEAC. Em ordem decrescente de capacidade antioxidante, encontra-se: acerola> manga> morango> uva> açaí> goiaba> amora> graviola> maracujá> cupuaçu> abacaxi. Os frutos de baguaçu apresentam maior atividade antioxidante que os de jambolão.

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

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    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

  16. Time budgets of Snow Geese Chen caerulescens and Ross's Geese Chen rossii in mixed flocks: Implications of body size, ambient temperature and family associations

    Science.gov (United States)

    Jonsson, J.E.; Afton, A.D.

    2009-01-01

    Body size affects foraging and forage intake rates directly via energetic processes and indirectly through interactions with social status and social behaviour. Ambient temperature has a relatively greater effect on the energetics of smaller species, which also generally are more vulnerable to predator attacks than are larger species. We examined variability in an index of intake rates and an index of alertness in Lesser Snow Geese Chen caerulescens caerulescens and Ross's Geese Chen rossii wintering in southwest Louisiana. Specifically we examined variation in these response variables that could be attributed to species, age, family size and ambient temperature. We hypothesized that the smaller Ross's Geese would spend relatively more time feeding, exhibit relatively higher peck rates, spend more time alert or raise their heads up from feeding more frequently, and would respond to declining temperatures by increasing their proportion of time spent feeding. As predicted, we found that Ross's Geese spent more time feeding than did Snow Geese and had slightly higher peck rates than Snow Geese in one of two winters. Ross's Geese spent more time alert than did Snow Geese in one winter, but alert rates differed by family size, independent of species, in contrast to our prediction. In one winter, time spent foraging and walking was inversely related to average daily temperature, but both varied independently of species. Effects of age and family size on time budgets were generally independent of species and in accordance with previous studies. We conclude that body size is a key variable influencing time spent feeding in Ross's Geese, which may require a high time spent feeding at the expense of other activities. ?? 2008 The Authors.

  17. Caracterización morfológica de accesiones silvestres de guayaba

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    Liliana Jiménez Lozano

    2009-04-01

    Full Text Available Se realizó la caracterización morfológica de 22 accesiones silvestres de guayaba Psidium guajava L. 14 colectadas en el municipio de Restrepo (Valle del Cauca, seis en Armenia (Quindío y dos en Pereira (Risaralda. Se utilizaron 12 descriptores cuantitativos y 10 cualitativos de tallo, hojas y frutos; el análisis de agrupamiento se hizo mediante el coeficiente de Dice-Nei-Li y el promedio aritmético no ponderado (UPGMA. La mayor variabilidad se halló en los descriptores peso de la pulpa (CV = 55.92%, peso (CV = 45.23%, y acidez del fruto (CV = 44.75%. El análisis de agrupamientos con base en caracteres cuantitativos permitió establecer cuatro grupos: las accesiones del grupo A (Armenia, presentaron valores promedio de los descriptores de la calidad del fruto (grados Brix, acidez del fruto y relación grados Brix/acidez y valores altos de contenido de pulpa. La mayoría de accesiones del grupo C (Restrepo tuvieron altos valores de calidad del fruto y bajo contenido de pulpa. El grupo B, constituido por accesiones de Armenia y Pereira, se diferenció por valores bajos en los descriptores de rendimiento del fruto (peso del fruto, de la pulpa y diámetro de la cavidad seminal. Las accesiones del grupo D (Restrepo mostraron valores promedios en calidad y rendimiento del fruto. Los descriptores cuantitativos se reunieron en tres variables sintéticas para rendimiento y calidad del fruto que representaron 76.86% de la variabilidad total.

  18. Psychromicrobium silvestre gen. nov., sp. nov., an actinobacterium isolated from alpine forest soils.

    Science.gov (United States)

    Schumann, Peter; Zhang, De-Chao; França, Luís; Albuquerque, Luciana; da Costa, Milton S; Margesin, Rosa

    2017-03-01

    Two Gram-stain-variable, non-motile, catalase-positive and cytochrome c oxidase-negative bacteria, designated AK20-18 T and AM20-54, were isolated from forest soil samples collected in the Italian Alps. Growth occurred at a temperature range of 5-30 °C, at pH 6-9 and in the presence of 0-5 % (w/v) NaCl. The 16S rRNA gene sequence similarity between strains AK20-18 T and AM20-54 was 100 %. Phylogenetic analysis based on 16S rRNA gene sequence showed that strain AK20-18 T had highest 16S rRNA gene sequence similarity with the type strain of Arthrobacter psychrochitiniphilus (96.9 %). The cell-wall peptidoglycan structure of strain AK20-18 T was of the type A3alpha l-Lys-l-Thr-l-Ala2 (A11.27). The whole-cell sugars were galactose, ribose and lesser amounts of mannose. The major respiratory quinone of the two strains was menaquinone 9(H2) [MK-9(H2)], whereas MK-10(H2) was a minor component. The polar lipids were diphosphatidylglycerol, phosphatidylglycerol, phosphatidylinositol and unknown glycolipids. The major cellular fatty acids were anteiso-C15 : 0, iso-C15 : 0, iso-C16 : 0 and anteiso-C17 : 0. The genomic DNA G+C content was 59.9 mol%. Combined data of phylogenetic, phenotypic and chemotaxonomic analyses demonstrated that strains AK20-18 T and AM20-54 represent a novel genus and species, for which the name Psychromicrobium silvestre gen. nov., sp. nov. is proposed. The type strain of Psychromicrobium silvestregen. nov., sp. nov. is AK20-18 T (=DSM 102047 T =LMG 29369 T ).

  19. Augusto Boal en la educación social: del teatro del oprimido al psicodrama silvestre

    Directory of Open Access Journals (Sweden)

    Manuel F. Vieites García

    2015-02-01

    Full Text Available La obra de Augusto Boal Teatro del Oprimido se suele situar entre las aportaciones más transcendentales del teatro del siglo XX, en tanto sus dictados teóricos y sus propuestas metodológicas y prácticas han calado en ámbitos de la educación social y teatral relacionados con el desarrollo de la democracia cultural. Pasados cuarenta años desde sus primeras experiencias, en este trabajo se propone una genealogía del teatro del oprimido a partir de una lectura crítica de sus textos fundacionales y de alguna experiencia considerada paradigmática en su desarrollo, para mostrar su naturaleza, aportes, fortalezas y debilidades. Igualmente se muestra el tránsito entre una dimensión más educativa y teatral y otra más centrada en la terapia y el desarrollo personal, para concluir que las técnicas y recursos empleados en teatro del oprimido, que proceden de fuentes muy diversas, siguen teniendo potencialidades indudables en propuestas de intervención social, cultural y educativa propias de la pedagogía teatral y la pedagogía social.Cómo referenciar este artículoVieites García, M. F. (2015. Augusto Boal en la educación social: del teatro del oprimido al psicodrama silvestre. Foro de Educación, 13(18, pp. 161-179. doi: http://dx.doi.org/10.14516/fde.2015.013.018.009 

  20. Essential oil composition and biological activity from Artemisia caerulescens subsp. densiflora (Viv.) Gamisans ex Kerguélen & Lambinon (Asteraceae), an endemic species in the habitat of La Maddalena Archipelago.

    Science.gov (United States)

    Ornano, Luigi; Venditti, Alessandro; Ballero, Mauro; Sanna, Cinzia; Donno, Yuri; Quassinti, Luana; Bramucci, Massimo; Vitali, Luca A; Petrelli, Dezemona; Tirillini, Bruno; Papa, Fabrizio; Maggi, Filippo; Bianco, Armanodoriano

    2016-08-01

    The purpose of this study was to investigate the composition of the essential oil obtained from a population of Artemisia caerulescens subsp. densiflora growing in Razzoli, an island in the La Maddalena Archipelago (Sardinia, Italy). A. caerulescens sups. densiflora Viv. (Asteraceae), a wild herb, seldom studied in the Mediterranean, represents one of the many rare endemic species growing in North Sardinia. The essential oil composition was analysed by means of GC/MS analysis, which showed davana ethers as the major volatile components, accounting together for 17.5%, followed by (E)-nerolidol (4.5%), β-oplopenone (3.3%), cis-sabinene hydrate (5.2%) and terpinen-4-ol (4.7%). The oil was tested for antioxidant activity by means of DPPH test, inhibition of lipid oxidation test and hypochlorous acid test, which showed a quite interesting scavenger capacity. For the first time, we reported the cytotoxic activity of the essential oil of A. caerulescens subsp. densiflora, against three human tumour cell lines (A375, MDA-MB231 and HCT116), with IC50 values in the range 5.20-7.61 μg/mL, which deserved further studies to support its use as chemopreventive agent. Finally, the antimicrobial activity of the essential oil, displayed on a panel of human pathogens, was very low.

  1. Aspectos ecológicos y distribución de Tropaeolum tuberosum ssp. silvestre (Tropaeolaceae en Argentina

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    Eva Bulacio

    2012-06-01

    Full Text Available Tropaeolum tuberosum Ruiz et Pav. ssp. silvestre Sparre es una hierba rizomatosa trepadora que en Argentina fue encontrada en las Sierras de Calilegua (Jujuy y en áreas montanas de Catamarca, aunque de esta última localidad sólo se conoce un único e incompleto ejemplar. Habita quebradas húmedas, entre los 2.100 y 2.650 m s.n.m., en el límite superior del bosque montano. El tallo es grácil de hasta 3 m de largo y la porción subterránea está constituida por rizomas alargados y de hasta 1 cm de diámetro. Estas son las principales diferencias con la ssp. tuberosum, en la cual el tallo es más corto, erguido y desarrolla tubérculos bien definidos.Ecological features and distribution of Tropaeolum tuberosum ssp. silvestre (Tropaeolaceae in Argentina. Tropaeolum tuberosum Ruiz et Pav. ssp. silvestre Sparre is a rhizomatous climbing herb that in Argentina was found in the Sierras of Calilegua (Jujuy and Catamarca mountains, yet of this last locality only is known an one and incomplete specimen. It inhabits humid gorges, between 2100-2650 masl, in the upper limit of the montane forest. The slender stem reaches 3 meters in lenght and the underground portion shows elongated rhizomes up to 1 cm in diameter. These are the main differences with the ssp. tuberosum, in which the stem is shorter, erect and develop well-defned tubers.

  2. Diagnóstico da fauna silvestre em empresas florestais brasileiras Diagnosis of wild fauna in brazilian forest companies

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    Giovanna Debortoli Medeiros

    2009-02-01

    Full Text Available Com o objetivo de conhecer a situação atual da fauna silvestre em empresas florestais brasileiras, foram pesquisadas 42 razões sociais, entre Associadas e Co-Participantes da Sociedade de Investigações Florestais (SIF, as quais possuem plantios florestais próprios. As informações foram obtidas com base em questionário enviado às referidas empresas, via correio eletrônico, sendo as respostas obtidas também por esse mecanismo. Entre os vários resultados, destaca-se o fato de que 90,9% das empresas associadas já realizaram levantamentos qualitativos da fauna silvestre. No entanto, de modo geral há notória carência de infra-estrutura nas empresas pesquisadas para atender a trabalhos específicos de manejo e conservação da fauna silvestre.Forty-two companies, associates and co-participants of the Forest Investigation Society (SIF and owners of private forest plantations, were assessed to determine the current situation of wild fauna in Brazilian forest companies. Information was obtained through a questionnaire sent to and received from the companies by e-mail. One of the several results obtained was that 90.9% of the associate companies had already carried out qualitative surveys on wild fauna stands.. On the other hand, in general, there is a total lack of infrastructure in the surveyed companies, to specifically assist in the management and conservation of wild fauna.

  3. Aceite de frutos de Persea schiedeana en sobremaduración y cosechados de árboles en estado silvestre

    OpenAIRE

    Campos-Hernández, N; Cruz-Castillo, JG; Hernández-Montes, A; Rubio-Hernández, D

    2011-01-01

    En frutos sobremaduros de Persea schiedeana Nees colectados en árboles creciendo en estado silvestre se estudiaron las características químicas y sensoriales del aceite. La extracción de aceite con isopropanol y hexano tuvo un rendimiento de 12% aceite/pulpa (v/p). El aceite de P. schiedeana fue comparado con aceites comerciales de oliva y aguacate. El aceite de P. schiedeana tuvo menor número de insaturaciones y más ácidos grasos de cadena larga que los aceite de oliva y de aguacate. Los índ...

  4. Contribución a la patología de los carnívoros silvestres.

    OpenAIRE

    Sobrino Menchero, Raquel

    2008-01-01

    España cuenta con una rica comunidad de carnívoros silvestres terrestres. Esta tesis parte de las siguientes hipótesis: (1) los carnívoros terrestres, por su ubicación en la cúspide de la pirámide trófica, pueden ser buenos indicadores de la presencia y frecuencia de enfermedades que afectan a distintos taxones animales. (2) la diversidad paisajística de la Península Ibérica, que se asocia con diferentes comunidades de carnívoros terrestres, podría determinar diferencias en la distribución y ...

  5. Diagnóstico jurídico sobre el decomiso y manejo postdecomiso de fauna silvestre en el departamento del Chocó

    OpenAIRE

    Hinestroza Cuesta, Lisneider; Mena Valencia, Marisela; Palacios Sánchez, Kelly Johana; 2011-12-31

    2011-01-01

    En este artículo se presenta un estudio de carácter descriptivo sobre los decomisos y el manejo postdecomiso de fauna silvestre en el departamento del Chocó utilizado como corredor para el tráfico y comercialización ilegal; se analizan, a partir del marco jurídico colombiano, la definición de fauna silvestre, decomiso y sus consecuencias jurídicas. Entre el 2005 y marzo del 2011 se realizaron en el Chocó 904 decomisos: 316 aves, 321 reptiles y 264 de mamíferos, 1 anfibio, 1 arácnido y 1 pez. ...

  6. DIAGNÓSTICO JURÍDICO SOBRE EL DECOMISO Y MANEJO POSTDECOMISO DE FAUNA SILVESTRE EN EL DEPARTAMENTO DEL CHOCÓ

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    Lisneider Hinestroza Cuesta

    2011-12-01

    Full Text Available En este artículo se presenta un estudio de carácter descriptivo sobre los decomisos y el manejo postdecomiso de fauna silvestre en el departamento del Chocó utilizado como corredor para el tráfico y comercialización ilegal; se analizan, a partir del marco jurídico colombiano, la definición de fauna silvestre, decomiso y sus consecuencias jurídicas. Entre el 2005 y marzo del 2011 se realizaron en el Chocó 904 decomisos: 316 aves, 321 reptiles y 264 de mamíferos, 1 anfibio, 1 arácnido y 1 pez. La tendencia ha sido el aumento. La principal opción de disposición de fauna decomisada es la Liberación. Se han impuesto solamente sanciones de tipo administrativo sin reporte en el Registro Único de Infractores Ambientales y no se ha adelantado ninguna investigación de tipo penal

  7. Usos potenciales de germoplasma animal masculino con fines de preservación de fauna silvestre

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    Francisco Cabrera

    2017-11-01

    Full Text Available El germoplasma animal comprende células o tejidos que pueden generar nuevos individuos. Su preservación y uso puede instrumentarse en la reproducción de animales en peligro de extinción. El germoplasma animal, además de los gametos, incluye células diploides como las células madre, potencialmente capaces de dividirse indefinidamente. Las células madre espermatogoniales (CMEs generan los espermatozoides en el testículo (espermatogénesis. Las CME ofrecen múltiples opciones biotecnológicas. A diferencia de las células madre ovogoniales (hembras, numerosas CME pueden ser obtenidas durante el periodo postnatal prepuberal pre-meiosico. Estas células pueden ser aisladas, amplificadas in vitro y criopreservadas, para así crear líneas celulares. Las CME pueden inducirse a diferenciar in vivo e in vitro. Las metodologías in vivo, están basadas en el transplante de CMEs del testículo de un animal donador al testículo de otro receptor sin espermatogenesis, técnicas ya establecidas en animales de laboratorio con potencial para utilizarse en animales domésticos y silvestres. Estos últimos, podrían donar CMEs y animales de especies filogenéticamente relacionadas no amenazadas serían receptores para producir espermatozoides de la especie amenazada. Existen técnicas de transplante de material testicular preservado de diversos animales al tejido subcutáneo de ratones, donde se desarrolla la espermatogénesis completa. La espermatogénesis in vitro está disponible en ratones. Independientemente de la metodología utilizada, los espermatozoides obtenidos de CME pueden utilizarse en técnicas de reproducción asistida para generar embriones y/o nuevos individuos a fin de repoblar ecosistemas en desequilibrio o aumentar las tasas de mejoramiento genético en sistemas de producción animal.

  8. Riesgo de transmisión de la enfermedad de Chagas por intrusión de triatominos y mamíferos silvestres en Bucaramanga, Santander, Colombia

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    Marlene Reyes

    2017-01-01

    Conclusiones. El hallazgo de especies de triatominos intrusivas y de mamíferos con T. cruzi en el domicilio y el peridomicilio, así como en los bosques periurbanos, demuestra el riesgo de infección en las poblaciones que habitan en viviendas urbanas adyacentes a los ecótopos donde se mantiene el ciclo silvestre.

  9. O silêncio de Deus em Morangos Silvestres e O Sétimo Selo de Ingmar Bergman

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    Sinay, Isadora Goldberg

    2014-01-01

    A presente dissertação de mestrado é composta da análise de dois longa-metragens de ficção, Morangos Silvestres e O Sétimo Selo, de Ingmar Bergman . A análise busca mapear nas duas obras a temática do silêncio de Deus, aspecto relevante na obra do cineasta em questão. Ingmar Bergman é um dos maiores nomes da arte contemporânea e seus filmes articulam filosofia e religião, tornando-os de interesse fundamental para as ciências da religião como manifestação de reflexões essenci...

  10. Clínica de animais exóticos e silvestres: patologias nutricionais em psitacídeos

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    Pereira, Stéphanie Dorothée Melen Palha Ramos

    2014-01-01

    O presente trabalho visa relatar a casuística observada durante o estágio curricular em clínica de animais exóticos e silvestres, no Centro Veterinário de Exóticos do Porto e no Parc Zoologique d’Amnéville. Esta será exposta em frequências absolutas e relativas que estarão representadas em gráficos e tabelas para que a interpretação das atividades desenvolvidas seja clara. De seguida, estará contemplada uma revisão bibliográfica subordinada a uma das emergências mais frequentemente assisti...

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

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    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.

  12. Ácidos grasos y parámetros de calidad del aceite de semilla de uva silvestre (Vitis spp.

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    O. Franco-Mora

    2015-01-01

    Full Text Available México es centro de origen de varias especies de Vitis. La gran mayoría de ellas no son empleadas en la agricultura e industrias derivadas. Como parte de la exploración de su potencial agroindustrial se identificó y cuantificó a los ácidos grasos del aceite de semilla de vid silvestre (Vitis spp. de frutos de Temascaltepec, México y de la accesión E-201, cultivada en Zumpahuacán, México. El contenido promedio de aceite en la semilla fue de 16,7%, encontrando ácido linoleico (71,5%, oleico (17,2%, palmítico (6,6% y esteárico (4,3%. En el aceite obtenido en vides de Temascaltepec se determinó índice de yodo (57,9 g/100 g, índice de saponificación (170,7 mg/g e índice de peroxidos (30 mEq/kg, valores relacionados posiblemente al contenido de ácidos grasos insaturados. Sin embargo, ese mismo grado de insaturación no concordó con el punto de humeo observado (211 °C, lo cual posiblemente está relacionado con el contenido de ácidos palmítico y esteárico. El aceite de semilla de vid silvestre cumple parcialmente con los estándares establecidos para el aceite de semilla de V. vinifera, lo cual implica su potencial culinario, agroindustrial y cosmetológico.

  13. Ecología de la fauna silvestre de la sierra nevada y la Sierra del Ajusco

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    D. Granados Sánchez

    2004-01-01

    Full Text Available Se presenta un estudio sobre la fauna silvestre de la Sierra del Ajusco y la Sierra Nevada, localizadas dentro de la Faja Volcánica Transmexicana (FVT, en la porción oriental del límite meridional de la Cuenca de México. La enorme riqueza biológica de esta zona que rodea la zona metropolitana de la ciudad de México, uno de los mayores complejos urbanos del mundo, ha sobrevivido durante décadas al impacto de la urbanización de las áreas forestales, explotación de recursos naturales, contaminación, cacería, incendios y pastoreo. A pesar de esto, se desconocen muchos de los factores que regulan la dinámica de los ecosistemas en esta región. Con relación a la fauna silvestre la carencia de información es mucho más evidente, aspectos elementales como la diversidad de especies, las interacciones ecológicas, la función de los organismos en el ecosistema, las condiciones de estrés a que están sometidos, han sido poco explorados. En esta investigación se recurrió a observaciones de campo y a la consulta de diferentes fuentes bibliográficas para estimar la riqueza de especies de mamíferos, aves, reptiles y anfibios; las relaciones ecológicas entre los mismos y las consecuencias de la modificación de su hábitat producto de las actividades humanas.

  14. Estudio preliminar de especies de micobacterias en primates colombianos no humanos en cautiverio en dos centros de rescate de fauna silvestre de Bogotá

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    Karol Bibiana Barragán Fonseca

    2005-01-01

    Mycobacterium africanum, siendo el primer reporte de estas micobacterias para primates del Nuevo Mundo. La prevalencia para MNT fue de 7,2% perteneciendo a las especies Mycobacterium phlei, M. terrae, M. vaccae, M. flavescens, M. flavescens y M. zsulgaii, algunas de estas, patógenos oportunistas. No existe una diferencia a nivel descriptivo en cuanto a la edad, al sexo y al tipo de entrega de los individuos infectados con MNT y micobacterias tuberculosas con respecto a los individuos que no las presentaron. Los primates del Nuevo Mundo pueden ser portadores sanos de micobacterias tuberculosas lo que representa un riesgo para la salud humana, y con ciertas especies de micobacterias, podría ser un riesgo para las poblaciones de primates silvestres en caso de que estos primates sean liberados en el medio silvestre. Este estudio es relevante para el país, ya que integra conceptos médicos tanto epidemiológicos como microbiológicos, con aspectos relacionados con la conservación de la fauna silvestre.

  15. Tráfico y tenencia ilegal de fauna silvestre en el departamento de Boyacá

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    Alejandro Cabrejo Bello

    2010-10-01

    Full Text Available Con el fin de establecer cuáles son los principales grupos taxonómicos, suparticipación y las ciudades con mayores índices de tráfico y tenencia ilegal de vida silvestre en el departamento de Boyacá, jurisdicción de la Corporación Autónoma Regional de Boyacá- Corpoboyacá, se tomaron reportes de la base de datos de dicha entidad entre los años 2004 y 2008. Se hallaron registros de 398 individuos decomisados por parte de la autoridad ambiental y otros por entregas voluntarias. El grupo con mayor incidencia fue el de las aves con 58%,seguido por los reptiles con 26% y en tercer lugar los mamíferos con el 16% de los registros. Se observó que las tres principales ciudades del departamento (Tunja, Duitama y Sogamoso reportan las frecuencias más elevadas de incautaciones. Puerto Boyacá, también registra un número elevado de decomisos. Dentro de los tres grupos mencionados, las especies más afectadas correspondena los órdenes Psitaciformes, Primates y Testudínata, por lo cual merecen principal atención. Se recomienda además, implementar planes de conservación y emprender actividades de educación ambiental encaminadas a la utilización sostenible de la fauna en general.

  16. Abundancia estacional, fenología reproductiva y fidelidad al sitio del mulato (Melanotis caerulescens en ambientes ribereños del suroeste de Jalisco Seasonal abundance, reproductive phenology and site fidelity in riparian environments of the Blue Mockingbird (Melanotis caerulescens in southwestern Jalisco

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    Luz de los Milagros Rodríguez-Parga

    2012-06-01

    Full Text Available Este estudio describe la abundancia estacional, fenología reproductiva y fidelidad al sitio de Melanotis caerulescens, especie de ave endémica de México, localmente conocida como mulato y valorada por su canto. Se realizó un muestreo con el método de captura con redes de niebla durante 2 años en 3 sitios de la vegetación ribereña del río Ayuquila, Jalisco. Se caracterizó el hábitat mediante muestreos de los estratos arbóreo, arbustivo y herbáceo. Mediante modelos lineales generalizados se analizaron las diferencias de cobertura de los estratos entre los sitios y se identificó el efecto del sitio y el mes sobre la abundancia de la especie. La presencia de parche de incubación y protuberancia cloacal describe un periodo reproductor de abril a agosto. La abundancia del mulato se relacionó positivamente con sitios de mayor cobertura arbustiva y el análisis de fidelidad (por presencia-ausencia de 16 individuos mostró que 3 parejas reproductoras mantuvieron sus territorios. Estos resultados sugieren que mantener una adecuada densidad de sotobosque arbustivo en zonas ribereñas es importante para proveer alimento y áreas para la nidificación que requiere el mulato. El presente estudio es relevante por tratarse de los primeros datos al respecto que se publican sobre esta especie endémica.This study describes the seasonal abundance, reproductive phenology and site fidelity of the Blue Mockingbird (Melanotis caerulescens, an endemic species of Mexico noted for its singing capabilities. This species was sampled using mist-nets for 2 consecutive years at 3 sites of riparian vegetation in the Ayuquila River, Jalisco. Habitat characterization was carried out through sampling strata of trees, shrubs, and herbaceous ground cover. We used Generalized Linear Models to analyze the differences in coverage strata between the sites, and to identify the effect of site and month on the abundance of the species. The presence of a brood patch and

  17. LA VIDA SILVESTRE MANEJADA COMO RECURSOS DE USO COMÚN: ESTUDIO DE CASO EN MÉXICO

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    Alejandra Juárez Mondragón

    2015-12-01

    Full Text Available Desde 1997, el ejido Ajuchitlán Santiopan implementó reglas de aprovechamiento del venado cola blanca (Odocoileus virginianus mexicanus. Paralelamente registró una Unidad de Manejo para la Conservación de la Vida Silvestre (UMA, pretendiendo una caza sustentable. Esto implicó un co-manejo entre regulación local y federal. En México existe insuficiente conocimiento de estos procesos y de las repercusiones que generan en los ejidos. El objetivo del estudio fue comprender (desde la percepción de los pobladores la relación entre la creación de la institución local y el establecimiento de la UMA, utilizando la perspectiva teórica de recursos de uso común (RUC. Se realizaron entrevistas, listados libres, observación participante y consulta documental. De los entrevistados, el 46 % consideró que algunas leyes federales afectan tradiciones, y mencionaron que el 20 % dejó de respetar reglas ejidales. Sin embargo, 78 % reconoció importante mantener la UMA, porque: genera empleos temporales, incrementó la abundancia de venados y suscitó la reintroducción natural de especies ya extintas en el ejido. El 100 % coincidió en que la UMA es el factor principal de conservación de especies silvestres. Para continuar con este proceso es esencial replantear colectivamente objetivos de aprovechamiento y estrategias de vigilancia, ante las condiciones actuales.   White-tailed deer (Odocoileus virginianus mexicanus use regulations were implemented by the ejido Ajuchitlán Santiopan, since 1997. In parallel, the ejidatarios registered a Management Unit for the Conservation of Wildlife (UMA, seeking its sustainable hunting. This involved a co-management between local and federal regulation. The knowledge on these types of processes is sparse in Mexico, and of the impact that they generate in the ejidos. The aim of this study was to understand (from the perception of the inhabitants the relationship

  18. Estudio de la resistencia a Bemisia tabaci (Gennadius (Hemiptera: Aleyrodidae en germoplasma cultivado y silvestre de tomate (Solanum lycopersicum L.

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    Yeimy García Valencia

    2013-12-01

    Full Text Available En la Universidad Nacional de Colombia sede Palmira, en condiciones de campo y casa de malla, se evaluaron por preferencia para oviposición y número de ninfas de mosca blanca (Bemisia tabaci (Gennadius varias accesiones silvestres y poblaciones segregantes de tomate resistentes al pasador del fruto, Neoleucinodes elegantalis (Guenée. Se utilizó un diseño de bloques completos al azar con cuatro repeticiones, donde se evaluaron como variables el número de huevos y de ninfas del insecto por hoja. En cada observación se incluyeron tres hojas del tercio superior, medio e inferior del tallo de la planta. Las poblaciones de mosca blanca fueron muy bajas en los dos primeros ciclos de cultivo (en campo debido, probablemente, a las altas precipitaciones. Estas condiciones no permitieron una selección de materiales resistentes o susceptibles a este insecto. En el tercer ciclo de cultivo, bajo condiciones de casa de malla, no se encontraron diferencias significativas entre los retrocruzamientos respecto al testigo susceptible para la variable preferencia por oviposición. El genotipo 4212P4 presentó el menor número de ninfas, mostrando que tiene posiblemente un mecanismo que le confiere menor atracción para B. tabaci. Se encontró que los genotipos menos preferidos para oviposición y con menor número de ninfas fueron PI 134417, PI 134418 y PI 126449 (Solanum habrochaites var. Glabratum S. Knapp y D. M Spooneer.

  19. Sistemas de transmisión del conocimiento etnobotánico de plantas silvestres comestibles en Turbo, Antioquia, Colombia.

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    Ramón Antonio Mosquera Mena

    2015-03-01

    Full Text Available Los diferentes estudios etnobotánicos y etnoecológicos, muestran no solo la gran riqueza de recursos naturales que muchas comunidades han aprovechado de manera sostenible en el tiempo, si no también, la preocupación por la falta de sistematización del conocimiento debido a diferentes situaciones que lo dificultan. Esta investigación tiene como propósito mostrar los diferentes sistemas de transmisión del conocimiento que los habitantes del municipio de Turbo, Antioquia, Colombia, han utilizado para que las generaciones presentes y futuras reconozcan las plantas silvestres comestibles, lo cual es útil para tomar decisiones frente a la necesidad de sistematización del conocimiento de la biodiversidad local. Se utiliza una metodología que comprende las etapas de diseño de la encuesta etnobotánica, la aplicación de la misma teniendo en cuenta el tamaño de la población lo que arroja un total de 360 encuestas aplicadas en los 18 corregimientos del municipio, agrupados en cuatro sectores fisiográficos: Serranía, Litoral, Abanico Aluvial y Planicie Inundable. Los resultados muestran las formas de transmisión de conocimiento en cada uno de los corregimientos que componen la geografía del territorio, evidenciando que continúan primando sistemas de transmisión oral con muy baja sistematización y con un desinterés de la población joven por reconocer dichos recursos orientados a la preservación como fuentede alimento.

  20. Fauna silvestre asociada a ganado vacuno doble propósito en sistema de silvopastoreo, Pinto, Magdalena, Colombia

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    Jaime De La Ossa V.

    2011-12-01

    Full Text Available Objetivo. Evaluar la biodiversidad faunística asociada a ganadería vacuna de doble propósito en dos potreros estructurados con Botriochloa pertusa (colosoana como herbácea dominante, uno de ellos plantado con Crescentia cujete (Bignoniaceae como fuente de alimento adicional y otro con escaso y disperso arbolado. Materiales y métodos. El área de estudio está ubicada en el municipio de Pinto, Magdalena. Cada potrero evaluado fue de 10 ha, se mantuvo en cada uno un lote de quince vacas (½ Cebú, ¼ Pardo y ¼ Costeño con Cuernos, la separación entre las áreas muestreadas fue de 500m. Los registros de fauna se condujeron mediante punto fijo de conteo, en diez sitios de avistamiento, durante 20 días continuos, con cubrimiento visual amplio. Al ganado vacuno adulto presente en las dos áreas de trabajo se le realizó un pesaje individual al inicio del trabajo y al final del mismo, con el fin de determinar posibles diferencias entre ellos. Resultados. Estadísticamente el número de individuos y el número de especies presentaron diferencias significativas, siendo mayor la diversidad biológica para el potrero que poseía la plantación de C. cujete, mientras que el peso corporal de las vacas sometidas a pastoreo en las dos áreas no presentó diferencias significativas. Conclusiones. Se demuestra la importancia de este modelo pecuario como promotor de la conservación faunística local al convertirse enrefugio de variadas especies silvestres, al tiempo que mantiene la productividad existente sin alterar el ambiente sustancialmente.

  1. Biossegurança no manejo de animais silvestres em áreas de confinamento no Estado do Piauí

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    Felipe José Costa Viana

    2016-02-01

    Full Text Available A biossegurança em áreas de confinamento de animais silvestres é questão fundamental para a saúde pública, sobretudo em locais onde os animais são considerados protagonistas da atração, como em parques zoológicos. Estes locais, apesar de toda segurança envolvida na contenção e manejo dos animais, ainda podem ser considerados como ponto de transmissão de zoonoses. Objetivou-se avaliar o grau de insalubridade dos funcionários e o uso de equipamentos de proteção contra patógenos de caráter zoonótico em áreas de confinamento de animais silvestres. O estudo foi realizado através da análise dos dados obtidos por meio de questionário aplicado aos trabalhadores de áreas de confinamento de animais silvestres, cujo enfoque era sobre a rotina de trabalho, manejo dos animais, histórico de saúde e o conhecimento acerca de doenças zoonóticas. As informações coletadas revelaram que, em parte, a administração do local proporciona aos funcionários uma segurança básica, fornecendo EPIs e cursos de atualização no manejo dos animais. Entretanto, a vestimenta utilizada pelos funcionários é lavada em suas próprias residências. Ainda há pontos a serem corrigidos na biossegurança nestes parques, como a construção de vestiários e uniformes próprios, com a lavagem do mesmo em um setor de lavanderia no próprio local.

  2. Prácticas culinarias y (reconocimiento de la diversidad local de verduras silvestres en el Colectivo Mujeres y Maíz de Teopisca, Chiapas, México

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    Celina Guadalupe Solís Becerra

    2014-07-01

    Full Text Available Se analizan los saberes y acciones relacionados con la diversidad local de verduras silvestres, reconocida por las integrantes del Colectivo Mujeres y Maíz de Teopisca, Chiapas, México, a partir de sus prácticas culinarias. Se documentaron trece especies de verduras silvestres mayormente presentes en traspatios y 33 recetas culinarias con incorporación de tales especies. Se destaca la importancia de las verduras silvestres, la gastronomía local, el trabajo cotidiano y la vida campesina, con los cuales se enriquece la relación que las mujeres del colectivo y sus familias tienen con la biodiversidad local a través de su cultura alimentaria.

  3. Técnica de Necropsia, Interpretación de Hallazgos Macroscópicos y Toma de Muestras en Mamíferos Silvestres

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    Jahnier Caicedo; J C Ospina; J Avila

    2012-01-01

    La correcta realización de necropsias y toma de muestras en los animales silvestres de los diferentes sistemas de conservación del país es una herramienta de alta importancia en el manejo epidemiológico de muchas enfermedades. La falta de entrenamiento en las técnicas de necropsia de estos animales dificulta la elaboración de propuestas diagnósticas y de control que repercutan en los problemas sanitarios; por lo cual, se presenta una guía de técnica de necropsia general para mamíferos silvest...

  4. Priorización de enfermedades virales zoonóticas en la interfaz de cerdos silvestres, cerdos domésticos y seres humanos

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    Diana Benavides-Arias

    2016-08-01

    Conclusión. Los métodos semicuantitativos de priorización son una fuente de información para la toma de decisiones, pero su utilización es poco frecuente en los países en desarrollo por la falta de datos de vigilancia en salud pública. El control de las enfermedades que afectan tanto a los seres humanos como a los animales silvestres, requiere el desarrollo de estrategias que reduzcan la transmisión de patógenos de estos a los animales domésticos y a los seres humanos.

  5. Estudio preliminar de especies de micobacterias en primates colombianos no humanos en cautiverio en dos centros de rescate de fauna silvestre de Bogotá

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    Karol Bibiana Barragán Fonseca; Claudia I. Brieva Rico; Martha I. Guerrero

    2005-01-01

    Se determinó la presencia de diferentes especies de micobacterias en 83 primates colombianos en cautiverio en dos centros de rescate de fauna silvestre de Bogotá. Se evaluaron 166 muestras de sangre y lavado gástrico mediante amplificación por PCR-spoligotyping para micobacterias del complejo tuberculosis y Hsp65-PRA para micobacterias no  tuberculosas (MNT). Se obtuvo una prevalencia del 2,4% para micobacterias del complejo Mycobacterium tuberculosis, encontrando un Saimiri sciureus infec...

  6. Estudio preliminar de especies de micobacterias en primates colombianos no humanos en cautiverio en dos centros de rescate de fauna silvestre de Bogotá

    OpenAIRE

    Barragán Fonseca Karol Bibiana; Guerrero Martha I.; Brieva Rico Claudia I.

    2005-01-01

    Se determinó la presencia de diferentes especies de micobacterias en 83 primates colombianos en cautiverio en dos centros de rescate de fauna silvestre de Bogotá. Se evaluaron 166 muestras de sangre y lavado gástrico mediante amplificación por PCR-spoligotyping para micobacterias del
    complejo tuberculosis y Hsp65-PRA para micobacterias no  tuberculosas (MNT). Se obtuvo una prevalencia del 2,4% para micobacterias del complejo Mycobacterium tuberculosis, encontrando un Saimiri sciure...

  7. Composição química e valor nutricional de cogumelos silvestres comestíveis do nordeste de Portugal

    OpenAIRE

    Barros, Lillian; Baptista, Paula; Correia, Daniela M.; Casal, Susana; Oliveira, M.B.P.P.; Ferreira, Isabel C.F.R.

    2007-01-01

    Neste trabalho, determinou-se a composição química e o valor nutricional de cinco espécies de cogumelos silvestres comestíveis (Agaricus arvensis, Lactarius deliciosus, Leucopaxillus giganteus, Sarcodon imbricatus, Tricholoma portentosum) vulgarmente consumidos na região de Trás-os-Montes, Nordeste de Portugal. A avaliação da composição química incluíu determinação de humidade, gordura total, proteína total, cinzas, hidratos de carbono e do valor nutricional. O perfil de macron...

  8. Ecletismo e retórica na filosofia brasileira: de Silvestre Pinheiro Ferreira (1769-1846) ao frei Francisco do Monte Alverne (1784-1858)

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    Duran, Maria Renata da Cruz

    2015-01-01

    Resumo Este artigo trata da filosofia eclética de Victor Cousin conforme seus repetidores brasileiros do início do século XIX: Silvestre Pinheiro Pereira e frei Francisco do Monte Alverne. O objetivo principal é estudar as relações entre o ecletismo e a retórica em prol da justificação dos limites, da dispersão e da superficialidade do debate filosófico local. Revisando as obras de Antônio Paim, Laerte Ramos de Carvalho e Maria Beatriz Nizza da Silva, destacou-se, especialmente, alguns pressu...

  9. Eclecticism and Rhetoric in the Brazilian philosophy: from Silvestre Pinheiro Ferreira (1769-1846) to Fray Francisco do Monte Alverne (1784-1858)

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    Duran, Maria Renata da Cruz; Universidade Estadual de Londrina

    2015-01-01

    Este artigo trata da filosofia eclética de Victor Cousin conforme seus repetidores brasileiros do início do século XIX: Silvestre Pinheiro Pereira e frei Francisco do Monte Alverne. O objetivo principal é estudar as relações entre o ecletismo e a retórica em prol da justificação dos limites, da dispersão e da superficialidade do debate filosófico local. Revisando as obras de Antônio Paim, Laerte Ramos de Carvalho e Maria Beatriz Nizza da Silva, destacou-se, especialmente, alguns pressupostos ...

  10. La investigación en torno a la concepción de vida silvestre: Una aproximación al estado del arte en el contexto educativo.Pág 51-87

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    Luis Juan Rubiano O.

    2011-07-01

    Full Text Available Se hace una revisión sobre el origen de la concepción de vida silvestre, rastreando su significado desde el siglo XIV hasta el presente. Aunque existen en Inglaterra referencias muy antiguas sobre la concepción de vida silvestre, es en Estados Unidos donde nace y evoluciona dicho término. Al comparar las concepciones de la vida silvestre en los Estados Unidos respecto a los países latinoamericanos, se evidencia la enorme importancia cultural, educativa, política y social dada a tales concepciones en el continente norteamericano en contraste con Latinoamérica, particularmente Colombia, en donde no se dan tales manifestaciones. Igualmente, la historia de la educación e investigación en educación sobre la vida silvestre en los Estados Unidos revela una notoria inserción de esta temática tanto en los textos divulgativos (educación no formal como en la literatura científica y en los currículos de educación básica y universitaria. En dicho país es posible conjeturar un cambio evolutivo en la concepción de vida silvestre que, de acuerdo con nuestra investigación, se inicia a finales del siglo XIX con un significado de fauna de caza deportiva y culmina, hacia la década de 1970 con la inclusión de todos los reinos de la naturaleza así como su hábitat e interrelaciones. En nuestro país, y en general para Suramérica, es muy escasa la literatura especializada sobre vida silvestre, no existiendo facultades o carreras con dicha temática a pesar de la enorme biodiversidad de este continente. Algunas de las razones aducidas por el autor, que explican esta situación, son la influencia de la visión taxonómica de la naturaleza, privilegiada en Colombia por la Expedición Botánica, y la dificultad para incorporar la educación ambiental en el contexto académico universitario. Se concluye igualmente la escasa investigación en vida silvestre y el potencial que existe para desarrollarla en el campo de las ciencias naturales y sociales

  11. PARÁMETROS HEMATOLÓGICOS EN POLLUELOS DE PSITÁCIDOS EN CAUTIVERIO DE ORIGEN SILVESTRE

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    J. A. Herrera

    2013-01-01

    Full Text Available El objetivo de este estudio fue describir los parámetros hematológicos en 69 polluelos en cautiverio de origen silvestre, clínicamente sanos, menores de tres meses de edad, en cuatro especies de psitácidos: Pionus senilis (n = 18, Amazona albifrons (n = 15, Amazona autumnalis (n = 25 y Amazona oratrix (n = 11, procedentes de la región central de México. Para determinar dichos parámetros, de cada ejemplar se obtuvieron 500 μl de sangre por punción de la vena braquial. En las cuatro especies citadas, el porcentaje del hematocrito fue de 56,4 ± 3,36; 51 ± 6,52; 47,6 ± 6,47 y 53,8 ± 9,26; el VCM en fl fue de 184,6 ± 13,4; 142,0 ± 25,4; 106,3 ± 11,7 y 162,3 ± 71,9; la cuenta eritrocítica fue de 4,7 ± 2,1 x10 6 /μl; 6,1 ± 8,2 x10 6 /μl; 6,9 ± 1,2 x10 6 /μl y 5,4 ± 1,1 x10 6 /μl; y la cuenta leucocitaria de 3,06 ± 0,15 x10 3 /μl; 3,62 ± 0,24 x10 3 /μl; 4,48 ± 0,36 x10 3 /μl y 3,56 ± 0,71 x10 3 /μl respectivamente para P. senilis , A. albifrons , A. autumnalis y A. oratrix . Se constató tendencia a la heterofilia en A. albifrons y A. oratrix , lo cual puede ser de gran utilidad para un diagnóstico cada vez más preciso en la clínica de aves en cautiverio.

  12. Natural infection by endoparasites among free-living wild animals Infecção natural por endoparasitas em animais silvestres de vida-livre

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    Luciane Holsback

    Full Text Available The objective of this study was to investigate the frequency of occurrence and variety of intestinal parasites among free-living wild animals. Fecal samples from wild mammals and birds at rehabilitation centers in the states of Mato Grosso do Sul and São Paulo were analyzed by sedimentation and flotation-centrifugation methods. Parasite eggs, oocysts, cysts and/or trophozoites were found in 71% of the samples. Cryptosporidium sp. oocysts were detected in fecal samples from oncillas (Leopardus tigrinus and scaly-headed parrots (Pionus maximiliani. Giardia cysts were identified in the feces of a gray brocket (Mazama gouazoubira. Among the most common parasites found, there were eggs from Toxocara cati, Toxascaris leonina and Ancylostoma tubaeforme, and from Cestoda. Several Enterobius sp. eggs were found in the feces of red howler monkeys (Alouatta seniculus. It can be concluded from this study that despite the small number of samples, the diversity of parasites found was noteworthy. Additional information about parasite endofauna in wild animals is needed, since their presence might suggest that there could be proximity to and interactions with domestic animals and/or humans. In addition, further studies on parasites from free-living wild animals are of prime importance for understanding the intensity of anthropic changes in wild environments.O objetivo deste trabalho foi pesquisar a frequência de ocorrência e a variedade de parasitas intestinais de animais silvestres de vida livre. Amostras de fezes de mamíferos e aves silvestres de centros de reabilitação dos Estados do Mato Grosso do Sul e São Paulo, foram analisadas pelos métodos de sedimentação e de centrífugo-flutuação. Foram encontrados ovos, oocistos, cistos e/ou trofozoítos de parasitas em 71% das amostras. Oocistos de Cryptosporidium sp. foram detectados em amostras de fezes de gato-do-mato-pequeno (Leopardus tigrinus e maritacas (Pionus maximiliani. Cistos de Giardia

  13. Detección por reacción en cadena de la polimerasa de transcriptasa inversa del virus de la fiebre amarilla en monos silvestres: una herramienta sensible para la vigilancia epidemiológica

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    Jairo A. Méndez

    2007-09-01

    Conclusión. El hallazgo del virus de la fiebre amarilla en monos silvestres representa una evidencia de su actividad enzoótica en nuestro territorio, que incrementa el riesgo de transmisión a humanos y de urbanización por procesos de migración de la población.

  14. New records of Histoplasma capsulatum from wild animals in the Brazilian Amazon Novos registros de Histoplasma capsulatum em animais silvestres na Amazônia brasileira

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    Roberto Daibes Naiff

    1996-08-01

    Full Text Available Twenty-eight isolates of Histoplasma capsulation were obtained from eight species of forest mammals from the States of Amazonas, Pará and Rondônia in the Amazon Region of Brazil. Primary isolates were obtained by inoculating triturated liver and spleen tissue intradermally and intraperito-neally in hamsters. Mycological diagnosis in hamsters presenting lesions was confirmed by histopathology and culture on Sabouraud dextrose-agar. Infected hamsters developed signs of disease within two to nine months; all had disseminated visceral lesions and most also had skin lesions at the sites of inoculation. None of the hamsters inoculated with skin macerates of the original hosts developed histoplasmosis, and histopathological examination of the viscera of the wild hosts failed to reveal H. capsulation. Prevalence of infection was considerably higher in females than in males both for the opossum Didelphis marsupialis and for total wild animals (479 examined. It is proposed that canopy-dwelling mammals may acquire the infection from conidia borne on convective currents in hollow trees with openings at ground-level.Vinte e oito amostras de Histoplasma capsulatum foram obtidas de oito espécies de mamíferos silvestres nos Estados do Amazonas, Pará e Rondônia. Os isolamentos foram feitos mediante inoculação de amostras trituradas de fígado e baço em hamsters por via intradérmica e intraperitoneal. O diagnóstico micológico nos hamsters que apresentaram lesões foi confirmado por histopatologia e cultivo em meio dextrose-agar de Sabouraud. Os hamsters infectados desenvolveram sinais de doença após dois a nove meses; todos apresentaram lesões disseminadas nas vísceras e a maioria apresentou também lesões cutâneas nos locais da inoculação. Nenhum dos hamsters inoculados com material de pele dos hospedeiros originais desenvolveu histoplasmose, e H. capsulatum não foi detectado nos exames histopatológicos dos animais silvestres. A preval

  15. Caracterización morfológica de accesiones silvestres de guayaba Morphologic characterization of wild accesions of guava

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    Liliana Jiménez Lozano

    2009-04-01

    Full Text Available Se realizó la caracterización morfológica de 22 accesiones silvestres de guayaba Psidium guajava L. 14 colectadas en el municipio de Restrepo (Valle del Cauca, seis en Armenia (Quindío y dos en Pereira (Risaralda. Se utilizaron 12 descriptores cuantitativos y 10 cualitativos de tallo, hojas y frutos; el análisis de agrupamiento se hizo mediante el coeficiente de Dice-Nei-Li y el promedio aritmético no ponderado (UPGMA. La mayor variabilidad se halló en los descriptores peso de la pulpa (CV = 55.92%, peso (CV = 45.23%, y acidez del fruto (CV = 44.75%. El análisis de agrupamientos con base en caracteres cuantitativos permitió establecer cuatro grupos: las accesiones del grupo A (Armenia, presentaron valores promedio de los descriptores de la calidad del fruto (grados Brix, acidez del fruto y relación grados Brix/acidez y valores altos de contenido de pulpa. La mayoría de accesiones del grupo C (Restrepo tuvieron altos valores de calidad del fruto y bajo contenido de pulpa. El grupo B, constituido por accesiones de Armenia y Pereira, se diferenció por valores bajos en los descriptores de rendimiento del fruto (peso del fruto, de la pulpa y diámetro de la cavidad seminal. Las accesiones del grupo D (Restrepo mostraron valores promedios en calidad y rendimiento del fruto. Los descriptores cuantitativos se reunieron en tres variables sintéticas para rendimiento y calidad del fruto que representaron 76.86% de la variabilidad total.Quantitative and qualitative morphologic characterization of 22 wild accessions of guava Psidium guajava L. collected in Restrepo (Valle del Cauca, Armenia (Quindío and Pereira (Risaralda was done. Twelve (12 quantitative and ten (10 qualitative descriptors of stem, leaves and fruits were used. The Dice- Nei Li coefficient and the UPGMA was used for the cluster analysis. Dendrograms and principal components analysis were used. The highest variability was associated with fruit descriptors, pulp weight (CV = 55

  16. Reproducción de cochinilla silvestre Dactylopius opuntiae (Homóptera: Dactylopiidae Reproduction of wild cochineal Dactylopius opuntiae (Homoptera: Dactylopiidae

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    Arnoldo Flores-Hernández

    2006-06-01

    Full Text Available Por sus características, la cochinilla silvestre ofrece perspectivas de aprovechamiento como fuente de carmín y para el mejoramiento genético de la grana fina. Por lo anterior, se estableció una multiplicación y crianza de cochinilla silvestre, proveniente de la zona árida del norte de México para caracterizarla, utilizando como hospedero a Opuntia megacantha Salm Dyck. Los resultados indican que la especie silvestre pertenece al género-especie Dactylopius opuntia. Se determinó la presencia de partenogénesis en hembras. La duración de los estadios biológicos depende del sexo del insecto; el adulto hembra permaneció durante 38.4 días y 4.2 días para machos, los primeros estadios ninfales fueron similares en duración (18.1-19.8 días. El ciclo biológico de las hembras fue de 77 días mientras que el de los machos fue de 43 días. Para las hembras se estimó un periodo de preoviposición de 18.8 días, manteniéndose en oviposición durante 21 días con un promedio de 131 insectos por hembra. La proporción sexual hembras: machos fue 1:1. El tipo de reproducción fue predominantemente sexual, aunque hubo hembras partenogénicas. Este es el primer reporte de Dactylopius opuntiae como cochinilla silvestre asociada a la zona árida del noreste de México, específicamente en el Bolsón de Mapimí, Durango, México.Wild cochineal has characteristics that offer advantage as a source of carmine and for fine cochineal improvement. To characterize wild cochineal, we initiated a breeding effort raising wild cochineal from the arid zone of the north oh Mexico, using as a host organism Opuntia megacantha Salm dick. The results indicate that the wild specie is Dactylopius opuntiae. The presence of parthenogenesis in females was determined. The duration of ontogenetic stages depends on the sex of the insect. The adult female lasted 38.4 days and 4.2 days for males, the first stage nymphs were similar in duration (18-19.8 days. The complete

  17. Epidemiologia da Leptospirose em animais silvestres na Fundação Parque Zoológico de São Paulo

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    Sandra Helena Ramiro Corrêa

    2004-06-01

    Full Text Available A Leptospirose é uma doença bacteriana de caráter zoonótico que afeta os animais domésticos, silvestres e o homem. Levantamentos sorológicos têm demonstrado o envolvimento de diferentes espécies sinantrópicas e silvestres na epidemiologia da doença. Com o objetivo de conhecer melhor a epidemiologia da Leptospirose dentro da Fundação Parque Zoológico de São Paulo, foi realizado um estudo sorológico nos animais silvestres mantidos em cativeiro, no período de 1996 a 1999. Foram colhidas amostras de sangue de 302 animais atendidos na rotina da Divisão de Veterinária, das quais 59 apresentaram resultado positivo (19.5% para a prova de Soroaglutinação Microscópica. Os sorovares mais prováveis para o conjunto total de resultados foram : copenhageni (15/59=25.4%, pomona (13/59=22% e castellonis (10/59=16.9%. Entre os animais silvestres examinados os sorovares mais prováveis foram : Família Callithrichidae : castellonis (3/3=100%, Família cebidae : copenhageni : (13/21=65%, grippotyphosa (2/21=9.5% e castellonis (1/21=44.7%. Família felidae : pomona (12/17=70.5%, icterohaemorrhagiae (2/17=11.7% e grippotyphosa (1/17=5.8%, Família canidae : castellonis (2/4=50%, cynopteri (1/4=25% e mini (1/4=25%, Família cervidae : mini (1/1=100%, Família bovidae : copenhageni (2/3=66.6%, pomona (1/3=33.3%, Família dasyproctidae : castellonis (2/3=66.6%, Família macropodidae: sentot (1/1=100%, família giraffidae : castellonis (1/1=100%. Animais de vida livre como ratos (Rattus norvegicus e gambás (Didelphis marsupialis também foram submetidos a prova de soroaglutinação necroscópica e cultura bacteriológica. Foram encontrados testes positivos para o sorovar icterohaemorrhagiae em 42,8% dos ratos e 40% dos gambás estudados. As freqüências de positivos quando analisadas do ponto de vista da localização espacial dos recintos destes animais, permitiram a verificação da existência de áreas críticas para exposição à leptospira

  18. Caracterización fitoquímica y bromatológica de Dichapetalum spruceanum vell.affinis planta silvestre de la Orinoquia Colombiana y sus potencialidades de uso

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    Cortés-Castillo, Caroll E.; Quiñones-Méndez, Luz M; Hernández C, Catalina

    2010-01-01

    Dichapetalum spruceanum vell.affinis (DICHAPETALACEAE), es una especie espontánea del departamento del Casanare en la Orinoquia Colombiana, la cual ha sido poco estudiada y considerada una maleza para los cultivos que se desarrollan en esa zona; dentro del marco del proyecto Caracterización fitoquímica y bromatológica de Dichapetalum spruceanum, planta silvestre subexplotada de la Orinoquia Colombiana, financiado por el Instituto de Investigaciones de la Orinoquia Colombiana (IIOC), se desarr...

  19. Antioxidant Capacity, Anthocyanins, and Total Phenols of Wild and Cultivated Berries in Chile Capacidad Antioxidante, Antocianinas y Fenoles Totales de Berries Silvestres y Cultivados en Chile

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    Jaime Guerrero C

    2010-12-01

    ón fue determinar la capacidad antioxidante (AC, antocianinas totales (TA y el contenido de fenoles totales (TP, de berries silvestres y cultivados en diferentes localidades de la Región de La Araucanía y Región de Los Ríos (Chile. Para evaluar estos parámetros se utilizó el método de radicales libres 2,2-difenil-2- picrilhidrazilo (DPPH, pH diferencial y Folin-Ciocalteu, respectivamente. Los porcentajes de decoloración del DPPH estuvieron comprendidos entre 67,8% para zarzaparrilla roja y 95,3% para rosa mosqueta. El maqui presentó un contenido de AT significativamente mayor (2240,2 y 1445,3 mg L-1 cianidina 3-glucósido que el resto de los berries, el promedio de AT fue de 335,5 mg L-1. En cuanto al contenido FT los mayores niveles se obtuvieron en los dos cultivares de saskatoon (773,9 y 1001,9 mg L-1 ácido gálico y en rosa mosqueta silvestre (1457,0 y 1140,4 mg L-1 de ácido gálico. En este estudio se concluye que existen diferencias significativas en la capacidad antioxidante de frutos silvestres y cultivados en Chile, observándose una fuerte correlación entre el CA y el contenido de FT.

  20. DISPONIBILIDAD DE RAÍCES ADVENTICIAS DE TRES ESPECIES SILVESTRES COSECHADAS PARA LA ELABORACIÓN DE ARTESANÍAS EN SANTA ELENA, ANTIOQUIA (COLOMBIA

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    ANA MARÍA BENAVIDES

    2015-01-01

    Full Text Available En los Andes colombianos, un gran número de artesanías se fabrican a partir de raíces adventicias de plantas nativas que crecen de forma silvestre. Sin embargo, la deforestación y las prácticas no sustentables han diezmado la disponibilidad de plantas silvestres productoras de fibra. En este estudio evaluamos la disponibilidad de fibras de tres especies en Santa Elena (Antioquia, Colombia: Asplundia sarmentosa, Philodendron aff. sagittifolium y Clusia multiflora. Después de una búsqueda exhaustiva en la zona de estudio ubicamos menos de 30 individuos adultos de cada especie. Para cada planta se midieron las variables asociadas al tamaño de la planta y se registró el número y la longitud de raíces maduras e inmaduras. Se pesaron fragmentos de raíces para estimar la biomasa. El crecimiento de raíces de cada planta fue monitoreado mensualmente durante siete meses. La disponibilidad actual de fibra (raíces maduras es de ca. 3 352 m (Asplundia 1 481 m, Clusia de 952 m, Philodendron 918 m, con esta cantidad de material se pueden elaborar entre 419 a 838 canastos. De acuerdo a la tasa de crecimiento mensual, una nueva raíz podría alcanzar un tamaño para ser cosechado entre el mes 38 y 71. Plantas más grandes tienen mayor cantidad de raíces maduras, sin embargo, la tasa de crecimiento no está asociada al tamaño de la planta. Nuestros resultados proveen evidencia de que las plantas en Santa Elena presentan una relación (tamaño de la planta, número de raíces maduras que es similar a plantas que se encuentran en zonas no intervenidas, no obstante, la cosecha de fibras en Santa Elena no es una actividad sostenible debido al bajo número de individuos susceptibles de ser cosechados, la lenta tasa de crecimiento de raíces y la alta demanda de fibras. Es necesario implementar estrategias como el enriquecimiento del bosque con estas tres especies para garantizar una actividad sustentable para recolectores y artesanos en Santa Elena y

  1. Prevalência da infecção pelo Toxoplasma gondii em animais domésticos, silvestres e grupamentos humanos da Amazônia

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    José João Ferraroni

    1980-01-01

    Full Text Available Através de Reação de Hemaglutinação Indireta para toxoplasmose foram examinadas amostras de sangue de dez diferentes espécies de animais domésticos e silvestres, de um grupamento humano da cidade de Manaus-Amazonas e de um grupamento humano indígena de área distante, no território de Roraima. Em 108 animais domésticos, o exame sorológico foi reagente em 90,6% dos gatos (Felis catus, 68,4% dos cães (Canis familiaris, 60,0% dos bovinos (Bos sp, 41,2% dos galináceos (Gallus sp e 40,0% dos palmípedes (Cairina sp. Nos 104 animais silvestres foram reagentes 75,0% dos felídeos (Felis sp, 63,6% dos marsupiais (Didelphis marsupialis e Marmosa sp, 63,3% dos primatas (Saimiri sp e 61,1% dos roedores (Proechimys. Entre os dois grupos humanos a prevalência foi de 70,6% nos 51 habitantes da área de Manaus, 64,8% nos 37 silvícolas de Roraima. Os autores discutem os resultados obtidos, assim como os diversos aspectos envolvidos na epidemiologia da toxoplasmose e chamam a atenção para a existência de mecanismos de transmissão ainda não esclarecidos, enfatizando a necessidade de maiores estudos dessa zoonose.Serological examination for Toxoplasma gondii in human blood samples and in blood samples from ten different species of animals obtained in Manaus, State of Amazonas-Brazil, are compared with results obtained from similar examinations of blood from humans living in other areas of the Amazon basin. The domestic cat (Felis catus showed the highest levels of antibody for Toxoplasma gondii, whereas the domestic chicken (Gallus domesticus and duck (Cairina sp the lowest. The other animals showed similar intermediate levels of antibody to this protozoa. The authors discuss the results and several aspects of the involvement in epidemiology of toxoplasmosis and call attention to some transmission mechanisms not yet elucidated.

  2. Etnobotánica del "coro" (Nicotiana paa, Solanaceae: Un tabaco silvestre poco conocido del extremo sur de Sudamérica

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    Gustavo F. Scarpa

    2011-07-01

    Full Text Available El "coro" es un tabaco silvestre de Argentina y Chile cuyas raíces son empleadas como fumatorio y mascatorio desde tiempos inmemoriales por grupos indígenas. Si bien existen noticias sobre su empleo desde la época colonial, en la actualidad no hay consenso sobre su identidad botánica a la par que sus modalidades de obtención, procesado y consumo han sido escasamente descriptas. Se efectuaron campañas etnobotánicas al sudoeste de la provincia del Chaco donde se colectaron ejemplares que responden a dicho nombre vernáculo en compañía de indígenas y se analizaron fuentes bibliográficas históricas disponibles. Se comprobó in situ que los mocovíes actualmente fuman sus raíces mezcladas con tabaco tanto en contextos ceremoniales como extra-ceremoniales. Como resultado del análisis bibliográfico se infiere que también lo emplearon en el pasado de manera homóloga indígenas vilelas, qom (tobas; wichi y abipones. Se descarta la correspondencia del "coro" con especies de Trichocline por la inexistencia de registros etnobotánicos al respecto. Se confirma que este fumatorio corresponde a Nicotiana paa Mart. rov. y se presentan y discuten nuevos datos sobre su obtención, procesamiento y consumo.

  3. Efecto del fotoperiodo y la temperatura sobre la composición bioquímica en reproductores silvestres de cabrilla sardinera, Mycteroperca rosacea (Streets, 1877

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    José Antonio Estrada-Godínez

    2014-03-01

    Full Text Available Se estimó el factor de condición (K, el índice gonadosomático (IGS, hepatosomático (IHS y de grasa visceral (IGV, así como la composición bioquímica en diferentes tejidos de reproductores silvestres de cabrilla sardinera, Mycteroperca rosacea, para evaluarlos a lo largo de un ciclo reproductivo y ver la relación que presentan los cambios con respecto a la temperatura del agua y fotoperiodo de la zona de muestreo. Se capturaron 187 reproductores, 146 hembras y 41 machos en el golfo de California, México. Se observaron diferencias significativas (P < 0,005 en los IGS, IHS e IGV; en el caso de K no se encontraron diferencias. También, se observaron variaciones significativas (P < 0,05 en la mayoría de los parámetros bioquímicos, encontrándose los valores más altos durante la etapa de desove, mientras que los más bajos durante la etapa de reposo. Todos los índices estimados y los parámetros bioquímicos determinados, se correlacionaron significativamente (P < 0,05 con el fotoperiodo, mientras que solo se encontraron correlaciones significativas (P < 0,05 entre el IGS e IGV con respecto a la temperatura del agua.

  4. Desenterrado os mortos: A reconstrução do passado político brasileiro na obra de Edney Silvestre

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    Gabriela Antunes

    2014-07-01

    Full Text Available Este artigo tem como objetivo analisar a trilogia de estreia de Edney Silvestre, composta por Se eu fechar os olhos agora (2009, A felicidade é fácil (2011, e Vidas provisórias (2013. Pretende-se fazer um breve balanço da contribuição do autor para a reabertura de um debate sobre o recente passado histórico-político brasileiro, e, relacionando os fatos abordados no romance com temas contemporâneos, ressaltar a relevância e a atualidade desse debate. Para isso, os textos serão analisados cronologicamente, o que visa mostrar o desenvolvimento do tratamento do sujeito histórico no conjunto de obras do autor.   This paper aims to analyse Edney Silvestre’s trilogy composed by If I close my eyes now (2009, Happiness is easy (2011, and Temporary lives (2013, as well as to review the author’s contribution in reopening a debate on Brazilian’s recent historical and political past. By pointing out the relationship between the facts mentioned in thenovels and contemporary Brazil, it aims to stress the importance and up-to-dateness of this discussion. In order to achieve these goals, the novels will be analysed chronologically, which also intends to reveal the development of the way the author deals with Brazilian history throughout his oeuvre.

  5. Híbridos somáticos obtenidos por fusión de protoplastos entre Solanum tuberosum L. subsp. tuberosum y la especie silvestre Solanum circaeifolium Bitter

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    Rosa Espejo

    2013-03-01

    Full Text Available Con la finalidad de obtener híbridos somáticos interespecíficos, se fusionaron protoplastos de la especie tetraploide Solanum tuberosum y de la especie silvestre diploide Solanum circaeifolium utilizando polietilenglicol. Los productos de fusión fueron cultivados en el medio V-KM suplementado con albúmina de suero bovino. Las primeras divisiones celulares ocurrieron a los 3 a 4 días de cultivo. Después de la formación de colonias se observó una rápida proliferación de callos, a partir de los cuales se regeneraron 19 plantas. El análisis molecular usando RAPD, confirmó que los regenerantes presentaban segmentos de ADN de ambos parentales, sugiriendo su posible naturaleza de híbridos somáticos. Las observaciones del número de cromosomas indicaron que todos los híbridos fueron aneuploides. En condiciones de invernadero, los regenerantes derivados de la fusión de protoplastos, mostraron características morfológicas intermedias entre las líneas parentales. Este estudio muestra la producción de híbridos somáticos de papa con el método de fusión presentado.

  6. Ecología trófica del jabalí europeo (Sus scrofa silvestre en Chile Trophic ecology of the wild boar (Sus scrofa in Chile

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    ÓSCAR SKEWES

    2007-09-01

    Full Text Available Documentamos la dieta del jabalí silvestre en el centro-sur de Chile basados en el examen de 20 estómagos colectados en los faldeos de volcán Mocho-Choshuenco (39°54' S, 72°02' O y en el Parque Nacional Vicente Pérez Rosales (41°03' S, 71°54' O. La dieta está representada por animales, vegetales y hongos. Entre los vegetales y hongos son consumidas tanto las partes epígeas como hipógeas, lo mismo que frutos y semillas. Hongos y rizomas de Gunnera tinctoria constituyen ítemes vegetales cuantitativamente importantes en la alimentación. El jabalí forrajea en general en ambiente boscoso, pero las especies vegetales más frecuentes en la dieta se encuentran en espacios abiertos o fuera del bosque. El ambiente dominado por Chusquea spp. constituye un importante sitio de alimentación. Los roedores de la familia Muridae dominan entre los animales determinados en la dieta del jabalí. Esta situación, sin embargo, parece obedecer a la ocurrencia de una ratada producto de la semillación masiva de Chusquea spp. durante la época de muestreo. Las aves de la familia Rhinocryptidae e invertebrados (en especial larvas del coleóptero Chiasognathus grantii constituyen parte frecuente de los ítemes animales de la dieta del jabalí. En comparación a estudios en otras partes del mundo, el jabalí silvestre en Chile consume hongos en porcentaje de ocurrencia similar (65 % a su dieta en Estados Unidos de América pero bastante más alta que su dieta en Europa (5-32 %. En relación al volumen del componente animal, el jabalí en Chile consume más (16,1 % que en Estados Unidos de América (6 % y que en Europa (7-13 %We document the diet of wild boar in south-central Chile based on analysis of 20 stomachs collected on the outskirts of Mocho-Choshuenco volcano (39°54' S, 72°02' W and of Vicente Pérez Rosales National Park (41°03' S, 71°54' W. The diet incorporates animals, plants and fungi. Among the latter two, both epigeal and hypogeal parts

  7. Crecimiento y mortalidad de la concha nácar Pteria sterna en bancos silvestres de Baja California Sur, México

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    Humberto Wright-López

    2009-09-01

    Full Text Available La concha nácar Pteria sterna sustenta los perlicultivos en México, y es la base de producción de perlas en el continente Americano. Está bajo protección especial desde 1994, y solo puede capturarse semilla natural para cultivo e investigación. Determinamos su crecimiento y mortalidad en bancos silvestres, registrando la altura de ostras de Santa Rosalía, Mulegé y Bahía de Loreto (1997-99. La longitud máxima estimada fue 130.35 mm (124.22-136.48 mm, P>0.95. Las frecuencias de longitudes se ordenaron en un "año virtual" (Guanco 1991. Los parámetros de crecimiento de von Bertalanffy estimados con el programa ELEFAN I fueron: L∞= 156.02 mm, k=0.48año-1, t0=-0.216 años, C= 0.43 y WP = 0.73; el índice de desempeño de crecimiento fue Φ’ = 4.068. La mortalidad total fue de Z = 3.34 año -1por longitud convertida a curva de captura. La regresión del peso total y la altura tuvo la expresión W = 0.000756 * L(i2.7075 (r²=0.90, n=233. Mostramos la diferencia entre los parámetros de crecimiento en condiciones de repoblamiento experimental y aquellos de individuos silvestres de P. sterna. El valor de mortalidad total es comparable a aquellos de Pinctada fucata en el mar Rojo o P. radiata en el mar Mediterráneo.Growht and mortality of the mollusk Pteria sterna in wild banks of Southern Baja California, Mexico. The Gulf of California nacre shell Pteria sterna is an important marine resource in Mexico, and the main species for "half" and round pearl production in the American continent. Wild spat can only be extracted legally for research or culture activities. This study calculates growth and mortality parameters for wild stocks in the eastern coast of Southern Baja California. Height’s data (353 dorso-ventral measurements were taken from 1997 to 1999 at Santa Rosalía, Mulegé and Loreto Bay coast. The maximum length was estimated at 130.35 mm (124.22-136.48 mm, p>0.95. The length frequency data were set in a "virtual year

  8. Observações sobre calazar em Jacobina, Bahia. VI - Investigações sobre reservatórios silvestres e comensais

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    I. A. Sherlock

    1988-03-01

    Full Text Available Durante os anos de 1982 a 1986, a investigação sobre mamíferos comensais e silvestres, da periferia da cidade de Jacobina, Bahia, mostrou, ao lado do escasso número de exemplares, uma reduzida variedade específica dessa fauna. Capturou-se apenas 11 espécies, entre as quais, predominou o Didelphis albiventris, que abrangeu 44% dos 213 espécimens capturados. Entre os 193 com exames já concluídos, 84 eram exemplares de D. albiventris e 2 estavam infectados pela Leishmania donovani senso lato, 1 por L. mexicana amazonensis, 1 por L. braziliensis, subespécie e 3 por Trypanosoma cruzi Também foram observadas formas suspeitas de serem amastigotas de leishmanics, nos esfregaços de órgãos de 3 exemplares de Dasyprocta aguti, 1 Cercomys cunicularius - e 1 Oryzomys eliurus. 0 restante dos exemplares, inclusive 14 de Lycalopex vetulus, estava negativo para flagelados. Apesar de reforçado por outros indicadores epidemiológicos, como a predominância específica, a freqüência domiciliar, a atratividade para a vetora Lutzomyia longipalpis, e a concomitância com casos humanos nos mesmos locais, o índice de 2,3% de infecção natural do Didelphis albiventris, não autoriza a conclusão definitiva de ser o marsupial o mais importante reservatório natural da leishmaniose visceral em Jacobina.

  9. Pasado y presente del uso de plantas silvestres con órganos subterráneos de almacenamiento comestibles en la Patagonia

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    Juan J. Ochoa

    2011-07-01

    Full Text Available El presente trabajo es la primara aproximación acerca del papel de las plantas con órganos de almacenamiento subterráneos comestibles (POAS en la Patagonia, desde una perspectiva temporal y espacial, al integrar datos etnohistóricos y etnográficos actuales ligados al uso de las POAS. El 75 % de las 54 fuentes analizadas mencionan el uso de POAS en la alimentación humana de la Patagonia. Las POAS silvestres comestibles registradas ascienden a 51 especies, siendo mayor el conjunto de POAS con raíces comestibles. La estepa y zonas ecotonales resultaron las de mayor riqueza de POAS, probablemente vinculado a adaptaciones ecológicas de éstas a la aridez en el primer caso, como a la alta diversidad relativa que presentan los ecotonos, en el segundo. El registro etnohistórico mostró discontinuidades marcadas, siendo pocas las especies presentes por más de un siglo, destacándose la continuidad documental de A. tuberosa desde el siglo XVIII al presente, así como la incorporación reciente de especies exóticas. Las fuentes etnohistóricas revisadas y su contraste con datos etnobotánicos recientes de campo sugieren dinamismo en los patrones de utilización, que a lo largo del tiempo han llevado al abandono del uso de las POAS en la práctica alimentaria de la Patagonia. Las singularidades encontradas respecto a lo temporal y espacial pueden vincularse tanto a los conocimientos locales y específicos desarrollados a lo largo del tiempo por los habitantes de la Patagonia, como también a las circunstancias sociopolíticas y académicas de cada una de las fuentes analizadas.

  10. Prevalencia y distribución de los principales agentes etiológicos que afectan los langostinos silvestres en Tumbes, Perú

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    Rubén Alfaro Aguilera

    2011-05-01

    Full Text Available Se determinó la prevalencia y distribución de diferentes agentes patógenos en langostinos silvestres, en la zona de esteros de la Región Tumbes - Perú, entre marzo y diciembre de 2009. Los canales de marea considerados en este estudio fueron: Boca del Río Tumbes, El Alcalde, Jelí, El Bendito, Envidia, Soledad y Algarrobo. Se colectó un total de 1926 langostinos entre juveniles y pre-adultos de las especies Litopenaeus vannamei, L. stylirostris y Farfantepenaeus californiensis. Utilizando la técnica de la PCR, se detectó la presencia de los patógenos NHPB (0,62%, IHHNV (0,31%, BP (1,61% y WSV (2,75%; no se encontró infección por TSV. Las tres especies en estudio fueron positivas a WSV y BP, presentándose la mayor prevalencia de infección por WSV (2,98% en la especie L. stylirostris y por BP (2,66% en L. vannamei. La NHPB fue detectada en las especies L. vannamei y L. stylirostris con 0,77% y 0,43% de prevalencia respectivamente. Se obtuvo una prevalencia de 0,52% para IHHNV en L. vannamei. Las más altas prevalencias de las infecciones por WSV, BP, NHPB e IHHNV se registraron en los canales de marea El Alcalde (10,79%, Algarrobo (4,51%, Envidia (2,26% y Jelí (5,05%. Los datos señalan la presencia constante de diversos patógenos virales y bacterianos en diferentes especies de peneidos y su amplia distribución a lo largo del litoral tumbesino, lo que constituye un riesgo potencial para el desarrollo de la acuicultura en la región, y podría afectar las poblaciones naturales de langostinos.

  11. Epidemiología molecular de la rabia urbana en Colombia, 1994-2004. La rabia en ecosistemas silvestres como amenaza para la población humana

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    Jorge Boshell

    2004-03-01

    Full Text Available

    En Colombia la rabia ocurre en dos ciclos epidemiológicos principales: la rabia urbana con el perro como principal reservorio y transmisor principalmente a humanos, y la rabia silvestre con especies animales de la vida silvestre como los quirópteros y zorros entre otros, como reservorios y transmisores principalmente a especies ganaderas y eventualmente a humanos que se convierten en víctimas accidentales. Durante los últimos años la rabia silvestre en Colombia ha cobrado mayor relevancia como problema de salud pública que la rabia urbana, a juzgar por el número de víctimas humanas. Con el fin de perfeccionar el diagnóstico y la tipificación del virus de la rabia en Colombia, el Laboratorio Nacional de Referencia del Instituto Nacional de Salud estandarizó técnicas para amplificar y secuenciar un fragmento de ADN complementario (cADN a una fracción de 902 nucleótidos seleccionados del ARN del virus, con el fin de adelantar estudios de epidemiología molecular. La fracción mencionada contiene secuencias que codifican para los aminoácidos 447-525 de la glicoproteína y 1-35 de la proteína L. Además contiene la región intergénica no codificante conocida como Pseudogen Psi.

    Las técnicas estandarizadas fueron las siguientes: a extracción de ARN total a partir de cerebro de ratón infectado. b amplificación molecular por transcripción reversa y reacción en cadena de la polimerasa. c secuenciación del fragmento amplificado.

    Mediante estas técnicas de epidemiología molecular viral se determinó que durante 1994-2004, la rabia urbana se concentró en tres regiones geográficas definidas, con epizootias en el antiplano cundiboyacense, departamento de Arauca y la región Caribe. Las dos primeras se controlaron

  12. PROECHIMYS SEMISPINOSUS (RATÓN DE ESPINAS: UNA ESPECIE DE FAUNA SILVESTRE CON POTENCIAL PROMISORIO PARA COMUNIDADES NEGRAS DEL DEPARTAMENTO DEL CHOCÓ, PACÍFICO COLOMBIANO

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    Asprilla-Perea Jeferson

    2012-12-01

    Full Text Available Se valoró el potencial de Proechimys semispinosus (ratón de espinas como especiepromisoria para el departamento del Chocó, según su uso tradicional en comunidadesnegras y a través de ensayos de laboratorio como aporte nutricional de su carne. Laalimentación es el principal uso que los pobladores de estas comunidades le dana la especie, y la trampa de cajón es la técnica de cacería que más se utiliza parasu captura. El sabor de la carne de este roedor goza de buena aceptación por partede sus consumidores, y no se han asociado enfermedades humanas a la ingesta dela misma. A nivel socioeconomico, aunque es una importante fuente de proteinapara las comunidades, su carne no se comercializa con frecuencia. Los ensayosde laboratorio mostraron que su carne posee características bromatológicas (20%proteínas, 78% humedad, 0.40% grasas, 0.97% Cenizas y 3.34 Kcal/100 g similaresa carnes domésticas de origen porcino, vacuno y aviar, así como también a otrassilvestres como la guagua (Cuniculus paca y el cuy (Cavia porcellus. Por lotanto, P. semispinosus es una especie de fauna silvestre con potencial promisoriopara comunidades negras en el departamento del Chocó, ya que es ampliamenteutilizado como alimento en localidades rurales de la región (que es la mayor partedel territorio y su carne cuenta con un importante valor nutricional

  13. Informe sobre la fiebre amarilla silvestre en la región del Meta, desde julio 1934 hasta diciembre de 1936

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    Jorge Boshell Manrique

    1938-02-01

    Full Text Available En agosto de 1934 el Padre Francisco Savary, misionero de la Compañía Montfort, da la voz de alarma acerca de unos casos de fiebres que se han presentado en unas veredas del vecindario de Restrepo y cuyo cuadro clínico corresponde al descrito en el capítulo de fiebre amarilla de su Manual de Misionero. Se practica una primera investigación encontrando, en efecto, manifestaciones mórbidas que sugieren fiebre amarilla. El brote presenta una característica extraña que confunde a primera vista la investigación, en un momento en que la noción de la fiebre silvestre, o sea sin Aedes aegypti, no está aún generalizada. No se encuentra tal zancudo en la región. A consecuencia de un informe de la Dirección Nacional de Higiene, el Dr. E. R. Rickard, médico de la Fundación Rockefeller, baja a Villavicencio y me deja instrucciones precisas, con elementos de investigación. En esta época el autor era Director Intendencial de Higiene. Se toman 30 muestras de sangre distribuídas entre personas convalecientes de ataques de la enfermedad, entre personas que moraban en las casas en que habían ocurrido casos y entre compañeros de trabajo de personas atacadas. De las muestras sometidas a la prueba de inmunidad para fiebre amarilla, 20 resultaron positivas, 2 inconclusivas y 8 negativas. Estos resultados traen por consecuencia el establecimiento de una comisión de investigación epidemiológica en la región de Restrepo.

  14. Diversidad y aspectos biológicos de abejas silvestres de un ambiente urbano y otro natural de la región central de Santa Fe, Argentina

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    Milagros DALMAZZO

    2010-01-01

    Full Text Available El objetivo del presente trabajo fue relevar el elenco de abejas silvestres en la región central de Santa Fe y comparar la diversidad de especies y aspectos biológicos en dos ambientes de una misma región. Las abejas fueron colectadas en el estrato herbáceo de la Reserva Universitaria “Escuela Granja” de la localidad Esperanza, y en la zona urbana de la localidad Susana, ambas ubicadas dentro de la Provincia Fitogeográfica del Espinal. La colecta se realizó en octubre, noviembre y diciembre de 2004 y en enero, febrero y marzo de 2005, registrando las especies vegetales sobre las que se capturaron. Se colectaron 277 ejemplares en total, de los cuales se identificaron 62 especies (27 géneros en 5 familias. Las curvas de rarefacción indican una tasa de acumulación de especies mayor para la Reserva Ecológica, los índices de diversidad de Shannon son 3,25 para la Reserva Ecológica y 2,64 para la Zona Urbana. Para la comparación de las comunidades en ambos sitios, las abejas fueron clasificadas en tres categorías según la especialización en el uso del recurso floral, sustrato de nidificación y comportamiento social. Se observó una asociación entre los grupos especialistas y de nidificación en el suelo con el ambiente natural, y por otro lado, las especies generalistas y de nidificación en cavidades con el ambiente urbano. No se identificaron diferencias, en cuanto al tipo de comportamiento social de las especies, entre ambos sitios.

  15. Determinación de anticuerpos contra patógenos virales y bacterianos seleccionados en la población de cerdos silvestres (Sus scrofa de la Reserva Natural Bahía Samborombón, Argentina

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    B. Carpinetti

    2017-06-01

    Full Text Available Los cerdos silvestres (Sus scrofa descienden de cruzamientos entre cerdos domésticos liberados durante la colonización con jabalíes salvajes euroasiáticos, liberados con propósitos cinegéticos. Son invasivos y su coexistencia con especies domésticas implica riesgos sanitarios. Argentina es considerada libre de fiebre aftosa (FA, peste porcina clásica (PPC y africana (PPA y síndrome reproductivo y respiratorio porcino (PRRS. La enfermedad de Aujeszky (EA y la leptospirosis son endémicas en ciertas áreas del país. El objetivo fue evaluar la presencia de ciertas enfermedades zoonóticas y/o de importancia para la producción animal y la conservación de la biodiversidad en cerdos silvestres de la Bahía de Samborombón. Se capturaron 118 animales. Se tomaron muestras de suero, tonsilas, músculo, intestino delgado, linfonódulos, entre otras. Se estudió la presencia de anticuerpos contra Brucella spp., coronavirus respiratorio porcino, virus de la estomatitis vesicular, de la FA, de la gastroenteritis transmisible porcina (TGEV, de la PPC, PPA, EA, PRRS y Leptospira spp. Se realizaron análisis bacteriológicos para Mycobacterium spp. Los resultados ratificaron la ausencia de las enfermedades exóticas e indicaron que 36 % de los animales presentó anticuerpos contra Leptospira interrogans serovar pomona y 62,5 % contra el virus de la EA. Estos resultados remarcan la importancia del monitoreo de la interfase productiva/silvestre en función de la salud pública, producción animal y conservación de la biodiversidad.

  16. Análisis de la dinámica de poblaciones silvestres de Chigüiros Hydrochaeris hydrochaeris (Linnaeus, 1766 como herramienta de manejo hacia el aprovechamiento sostenible y la conservación

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    Elizabeth Mesa González

    2006-01-01

    Full Text Available Se analizó el comportamiento de la dinámica de poblaciones silvestres de chigüiros bajo diferentes condiciones del hábitat y presiones antrópicas, y se formuló una herramienta técnica para apoyar la gestión de manejo que realiza la autoridad ambiental regional relacionada con el aprovechamiento sostenible y la conservación de la especie. Se generó un modelo de simulación determinístico que representa la dinámica de poblaciones silvestres de chigüiros, como resultado de procesos biológicos de natalidad y mortalidad, y del aprovechamiento extractivo anual de individuos en hatos de los municipios de Paz de Ariporo y Hato Corozal (Casanare, Colombia. Una interfase fue diseñada para facilitar el uso del modelo y construir escenarios para simular diferentes alternativas de manejo. El modelo fue usado para evaluar el efecto a largo plazo de la cosecha o extracción de individuos mediante la caza comercial, la cosecha selectiva de adultos por sexos, la presencia de adecuaciones y la variación del área de hábitat adecuado disponible sobre la tendencia de abundancia de tres poblaciones silvestres de chigüiros en la zona de estudio. Las simulaciones realizadas bajo los diferentes escenarios permitieron establecer las distintas respuestas de cada población a los cambios realizados en la tasa de cosecha y el área de hábitat y así recomendar acciones de manejo. Los escenarios evaluados destacan la importancia de hacer una extracción selectiva de adultos por sexos para realizar un aprovechamiento sostenible de la población y garantizarsu conservación. Así mismo, se destaca la importancia de mantener mayores áreas con hábitat adecuado.

  17. Evaluación de respuestas bioquímicas y anormalidades cito-genótóxicas en mejillón silvestre "mytilus galloprovincialis" como biomarcadores de contaminación ambiental

    OpenAIRE

    Fernández Galindo, Beatriz

    2012-01-01

    En esta Tesis Doctoral se ha estudiado una batería de biomarcadores en branquias y glándula digestiva de mejillón silvestre de la costa mediterránea y noratlántica española para detectar el impacto y efectos biológicos de los principales tipos de contaminantes químicos. Las aportaciones que recoge esta Tesis incluyen que los biomarcadores investigados presentan un comportamiento diferente en branquias y glándula digestiva, y que su respuesta integrada en ambos tejidos refleja los efectos biol...

  18. Determinación de anticuerpos contra patógenos virales y bacterianos seleccionados en la población de cerdos silvestres (Sus scrofa) de la Reserva Natural Bahía Samborombón, Argentina

    OpenAIRE

    B. Carpinetti; G. Castresana; P. Rojas; J. Grant; A. Marcos; M. Monterubbianesi; H. R. Sanguinetti; M. S. Serena; M. G. Echeverría; M. Garciarena; A. Aleksa

    2017-01-01

    Los cerdos silvestres (Sus scrofa) descienden de cruzamientos entre cerdos domésticos liberados durante la colonización con jabalíes salvajes euroasiáticos, liberados con propósitos cinegéticos. Son invasivos y su coexistencia con especies domésticas implica riesgos sanitarios. Argentina es considerada libre de fiebre aftosa (FA), peste porcina clásica (PPC) y africana (PPA) y síndrome reproductivo y respiratorio porcino (PRRS). La enfermedad de Aujeszky (EA) y la leptospirosis son endémic...

  19. Frecuencia de Varroa destructor, Nosema apis y Acarapis woodi en colonias manejadas y enjambres silvestres de abejas (Apis mellifera en Mérida, Yucatán, México

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    Jesús Froylán Martínez Puc

    2011-01-01

    Full Text Available Las enfermedades y parasitosis que afectan a las abejas melíferas causan importantes pérdidas económicas a la actividad apícola. Sin embargo, los daños provocados por dichas parasitosis se presentan de manera heterogénea en colonias manejadas y en enjambres silvestres. Con la finalidad de determinar la frecuencia y niveles de infestación de V. destructor, N. apis y A. woodi en abejas melíferas en Yucatán, se colectaron un total de 76 muestras de abejas melíferas, durante junio a septiembre de 2006, siendo 27 de colonias manejadas y 49 de enjambres silvestres. La frecuencia de V. destructor en colonias manejadas fue de 62.9 %, con un nivel de infestación de 1.70 ± 0.26 (ácaros/100 abejas, y en los enjambres silvestres fue de 55.1 %, con un nivel de infestación de 1.96 ± 0.44. No se observaron diferencias en la frecuencia (X2 = 0.44, gl = 1, P =0.51, y niveles de infestación (t=0.14, P=0.89. La frecuencia de N. apis en las colonias manejadas fue de 74.0 %, con una media de infestación de 1´480 x 103 ± 232 x 103 (esporas/ abeja, y en los enjambres silvestres de 53.0 %, con una media de infestación de 1´416 x 103 ± 264 x 103, no se observaron diferencias en la frecuencia (X2 = 3.22, gl = 1, P= 0.07 y niveles de infestación (t=0.18, P=0.86. No se detectó la presencia de A. woodi en las muestras analizadas. Los resultados demuestran un aumento en la frecuencia de N. apis en Yucatán.

  20. Identificación de escenarios de calidad de hábitat para fauna silvestre : caso de estudio| cuenca media y alta del río Otún (Risaralda)

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    García Gómez, Martha Patricia

    2009-01-01

    Este trabajo contiene eje clave de investigación las dinámicas espaciales de cambio en la calidad del hábitat para fauna silvestre, a partir de la transformación de coberturas dentro de las áreas protegidas (sistemas naturales) y los sistemas reproductivos. Se presenta la estructura de un modelo basado en la utilización de software SIG. Lógica difusa y Agentes Inteligentes a partir del cual se logra la simulación de escenarios de calidad de hábitat para la especie ?zorros? en la cuenca media ...

  1. Caracterización de sitios de percha del guajolote silvestre (Meleagris gallopavo mexicana) en Sierra Fría, Aguascalientes, México Roost sites characteristics of wild turkey (Meleagris gallopavo mexicana) in Sierra Fria, Aguascalientes, Mexico

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    Marcelo Márquez-Olivas; Edmundo García-Moya; Carlos González-Rebeles Islas; Humberto Vaquera-Huerta

    2007-01-01

    Entre octubre y noviembre del año 2001 y mayo de 2002 se localizaron 16 sitios de percha de guajolote silvestre (Meleagris gallopavo mexicana) en la Sierra Fría de Aguascalientes. El 87.5% de los sitios se encontraron en bosques de pino-encino (en rodales de pinos), en altitudes de 2500 a 2650 m. En la parte alta (2/3) de la cuesta se localizaron 8 de los sitios y 7 sobre laderas de exposición noreste, en una pendiente promedio de 38.9 ± 12.6%. El 62.5% de los sitios se usaron durante todo el...

  2. Micrometeorología de masas forestales de pino silvestre (Pinus sylvestris L.) y rebollo (Quercus pyrenaica Willd.) en la vertiente norte del Sistema Central (Montes de Valsaín, Segovia). Consecuencias selvícolas

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    Gómez Sanz, Valentín

    2011-01-01

    La Tesis trata sobre el estudio y evaluación de los patrones microescálicos de variabilidad, tanto espacial como temporal, que bajo diferentes cubiertas forestales de pino silvestre (Pinus sylvestris L.) y rebollo (Quercus pyrenaica Wild.), presentan las variables de estado de uso más frecuente en la caracterización de] sistema atmósfera-superficie terrestre. Se ha buscado con ello analizar cualitativa y cuantitativamente el efecto modificador que, sobre la respuesta micrometereológica bajo e...

  3. Utilización de especies silvestres diploides cultivadas de papa a fin de transferir resistencia a las heladas a la papa común cultivada (Solanum tuberosum l.

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    Estrada Ramos Nelsón

    1986-12-01

    Full Text Available Las heladas constituyen un factor limitante importante para la producción de papa en las altiplanicies y cordilleras andinas de Suramérlca. Por su efecto, se pierde cerca de 20% de la
    producción. Se ha informado de unas 30 especies silvestres de papa que poseen alta resistencia a las heladas. La utilización de especies de papa silvestres muy valiosas y con
    resistencia a las heladas es más eficiente y factible, si se cruzan inicialmente con clones de la especie dlplolde cultivada Sol.num phureJ. Juz. et Buk. Los híbridos F1, pueden resultar dlploides, trlploides o tetraploides, los cuales en su mayoria
    se pueden cruzar nuevamente con clones o cultivares tetraploides de S. tuberoaum L. Mediante este método se pueden transferir rápida y fácilmente la mayoria de genes que controlan la resistencia a las heladas e incorporarlos en la papa comunmente cultivada S. tuberoaum L.

  4. Mesocestoides sp. (Eucestoda, Mesocestoididae parasitizing four species of wild felines in Southern Brazil Mesocestoides sp. (Eucestoda, Mesocestoididae parasitando quatro espécies de felinos silvestres no Sul do Brasil

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    Moisés Gallas

    2011-06-01

    Full Text Available Leopardus colocolo, Leopardus geoffroyi, Leopardus tigrinus and Puma yagouaroundi are wild feline species endangered mainly due to habitat destruction and vehicle run overs. Seventeen felines hit on the roads were collected in Southern Brazil and examined for parasites. Cestodes were identified as Mesocestoides sp. The parasites were found in the small intestine of the hosts with a prevalence of 66.7% (L. colocolo and L. tigrinus, 60% (P. yagouaroundi and 50% (L. geoffroyi. Rodents and lizards were found in the stomach contents and they possibly were intermediate hosts of Mesocestoides sp. This is the first report of Mesocestoides sp. in wild felines in Brazil.As espécies Leopardus colocolo, Leopardus geoffroyi, Leopardus tigrinus e Puma yagouaroundi, são felídeos silvestres ameaçados de extinção, principalmente pela destruição do hábitat e morte em rodovias. Dezessete felídeos foram coletados atropelados no sul do Brasil e, analisados na pesquisa de parasitos. Cestóides encontrados foram identificados como Mesocestoides sp. Os parasitos foram encontrados no intestino delgado dos hospedeiros com prevalência de 66,7% (L. colocolo e L. tigrinus, 60% (P. yagouaroundi e 50% (L. geoffroyi. Roedores e lagartos foram encontrados no conteúdo estomacal, podendo ser os hospedeiros intermediários para Mesocestoides sp. Este é o primeiro registro de Mesocestoides sp. em felídeos silvestres no Brasil.

  5. Memoria espacial en monos capuchinos de Argentina: un estudio observacional en vida silvestre / Spatial memory in capuchin monkeys (Argentina:a wildlife observational study

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    María P. Tujague

    2016-03-01

    Full Text Available La memoria espacial se considera un factor selectivo en la evolución de la inteligencia. Los estudios en animales permiten pensar que los procesos cognitivos descriptos en humanos comparten características con los de otras especies. Se estudió el comportamiento espacial vinculado a la búsqueda del alimento de los monos capuchinos y su capacidad de retener información sobre la ubicación y estado del mismo. Durante los seguimientos de tres grupos de Cebus nigritus silvestres se aplicó un diseño observacional cualitativo que evaluó las cantidades de fruta madura e inmadura presentes en los árboles frutales consumidos por los monos en sus desplazamientos diarios. Las visitas a los árboles de frutos indicaron que los monos retienen información particular sobre la ubicación y condición de cada árbol. Los resultados obtenidos son fundamentales para la comprensión del funcionamiento de los mecanismos cognitivos no mediados por el lenguaje, lo cual permite ampliar los conocimientos de la base biológica del comportamiento espacial no humano. Palabras clave: Cebus=Sapajus nigritus; árboles frutales; velocidad de acercamiento; visita Spatial memory is considered a selective factor in the evolution of intelligence. Animal studies lead us to believe that cognitive processes described in humans may have much in common with those of other species. We studied the foraging spatial behavior of capuchin monkeys and their ability to retain information about food location and quality. We analyzed whether individuals were able to integrate stored information about food sites and changes in the ripening of the resource. A qualitative observational design was used to monitor three groups of wild Cebus nigritus in their daily movements, evaluating the amounts of ripe and unripe fruit present in the fruiting trees consumed by monkeys. Visits to fruiting trees showed that monkeys remember specific information on the location and condition of each tree

  6. Investigações sôbre o comportamento de formas adultas de mosquitos Silvestres no Estado de Sao Paulo, Brasil

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    Oswaldo Paulo Forattini

    1968-12-01

    Full Text Available Apresentaram-se os resultados das observações sobre o comportamento de formas adultas de Culicidae silvestres na área de Casa Grande, de zona de florestas primitivas situada na parte nordeste do Estado de São Paulo, Brasil. As investigações focalizaram os mosquitos de hábitos diurnos e crepusculares-noturnos, durante o período de 1963 a 1966. Foram obtidos dados concernentes à composição especifica, distribuição, ciclo anual da densidade, estratificação vertical na floresta e possíveis relações com o ambiente doméstico. A região estudada é considerada como bioma ou ecossistema do Anopheles (Kerteszia cruzii e, dessa maneira, êsse mosquito compareceu de maneira predominante nas observações, merecendo por isso especial atenção. As outras espécies distribuiram-se predominantemente entre os Sabethini, além de alguns Culicini. No que concerne à domesticidade, o Anopheles cruzii apresentou-se como apreciável freqüentador das casas, seguido pelo Aedes serratus. Além disso, aquele anofelino mostrou-se acentuadamente acrodendrófilo, parecendo ser dotado de alguma ornitofilia.This work reports observations on adult Culicidae activities for diurnal and crepuscular-nocturnal forest species occurring in the area of Casa Grande, located at the Northeast region of the State of São Paulo, Brazil. These investigations, were carried out during the 1963 to 1966 period. They recorded the specific composition, distribution, year cycle of abundance, vertical stratification in the forest, and the possible relationship of these forest mosquitoes to the housekold environment. Since these region is considered a biome of the Anopheles (Kerteszia cruzii particular attention was dedicated to this species, considered as an important malaria vector. Beside this, several Sabethini species proved to be considerably abundant and, along with some culicines as Aedes serratus, showed activities that may put these mosquitoes in relation with humans

  7. Fenología de la floración en tomate cultivado y especies silvestres relacionadas Flowering phenology in cultivated tomato and related wild species

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    Edwin Fernando Restrepo Salazar

    2008-06-01

    Full Text Available En un diseño experimental de bloques completos al azar se comparó la fenología de la floración de doce accesiones silvestres de Solanum sección Lycopersicum con la del tomate cultivado tipo “chonto”. Los tratamientos se repitieron tres veces. Se evaluó la aparición de las 12 primeras inflorescencias y el tipo de inflorescencia. Las fenologías de las accesiones de la variedad glabratum de S. habrochaites (PI 134417, PI134418 y PI126449, las accesiones LA1624, LA2092 de la variedad typicum de S. habrochaites y la accesión LA 444-1 de S. peruvianum coincidieron con la del tomate “chonto”. No se presentaron diferencias significativas en la variable días a inicio de floración entre las accesiones de la variedad glabratum y el tomate cultivado. Las accesiones de la variedad glabratum de S. habrochaites y el tomate cultivado presentaron inflorescencias simples; mientras que las accesiones de la variedad typicum de S. habrochaites y de la especie S. peruvianum presentaron inflorescencias bifurcadas.The flowering phenology of twelve wild accesions of Solanum section Lycopersicum were compared with those of the cultivated tomato type of “chonto” by using the randomized complete block design. The treatments were repeated three times. The appearance initiate of the first twelve inflorescences and kind of inflorescence were evaluated. The phenologies of the accesions of the glabratum variety from S. habrochaites (PI 134417, PI134418 y PI126449, LA1624 y LA2092 of the typicum variety from S. habrochaites and LA 444-1 from S. peruvianum coincided with those of the “chonto” tomato. There were no significant differences between the glabratum variety accessions and cultivated tomato in the starting days of flowering variable. The accesions of the glabratum variety from S. habrochaites and the cultivated tomato presented simple inflorescences; while the accesions of the typicum variety from S. habrochaites and S. peruvianum specie showed

  8. Comportamento reológico de méis de florada de silvestre Rheological behavior of honey from Serjania glabrata flowers

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    Alexandre J. de M. Queiroz

    2007-04-01

    Full Text Available Estudou-se o comportamento reológico de méis de Apis mellifera produzidos no estado do Piauí, no semi-árido brasileiro, elaborados com florada predominante de silvestre (Serjania glabrata. As amostras foram coletadas ao longo do ano 2000, a partir de coletas realizadas por apicultores, associações e cooperativas de apicultura da região abrangida pelos municípios de Picos, Itainópolis, Vera Mendes e Isaías Coelho. Após as coletas as amostras passaram pelos processos de centrifugação, filtragem e decantação. As medidas reológicas foram feitas nas temperaturas de 20 a 40 ºC utilizando-se um viscosímetro Brookfield, modelo RVT. As leituras de velocidade de rotação e torque foram transformadas em valores de taxa de deformação e tensão de cisalhamento. Os dados de taxa de deformação e tensão de cisalhamento foram ajustados pelas equações da Lei-da-Potência e de Herschel-Bulkley. As amostras apresentaram comportamento pseudoplástico. As equações se ajustaram adequadamente aos resultados experimentais de tensão de cisalhamento em função da taxa de deformação. O aumento de temperatura reduziu a viscosidade aparente em níveis próximos de 80%. Os valores de viscosidade aparente foram bem ajustados por uma equação do tipo Arrhenius.The rheological behavior of Apis mellifera honey produced in the State of Piauí, in the Brazilian semi-arid, obtained with predominance of Serjania glabrata flowers was studied. The samples were collected in the year 2000 by beekeepers and associations and cooperatives of beekeepers in the area covered by the municipal districts of Picos, Itainópolis, Vera Mendes and Isaías Coelho. The samples were centrifuged, filtered, decanted and the rheological measures at temperatures of 20 to 40 ºC using a Brookfield Viscometer RVT model were made. The readings of rotation speed and torque were transformed in shear rate and shear stress values. The data of shear rate and shear stress were fitted

  9. Ocorrência de linhagens humana e silvestre de Schistosoma mansoni, na pré-amazônia: I - estudo em moluscos Occurrence of wild and human strains of Schistosoma mansoni in lower Amazonia: I - study in moluscs

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    Othon de Carvalho Bastos

    1982-10-01

    Full Text Available Foram isoladas na região da Baixada Maranhense (Brasil, linhagens humana (H e silvestre(S de Schistosoma mansoni a partir de miracídios eclodidos de ovos encontrados em fezes de doentes humanos autóctones da Região e de fígados de roedores silvestres naturalmente infectados. Biomphalaria glabrata, descentes de caramujos coletados no campo, foram expostos, isoladamente, aos miracídios H e S, mantidos isolados em moluscário e observados durante 100 dias. Moluscos normais foram mantidos nas mesmas condições de ambiente em que foram submetidos os infectados e tomados como controle da experiência. Foram anotados os indices de infecção dos moluscos, as datas da eliminação de cercárias, quantidade de larvas eliminadas e mortalidade dos moluscos. Os dados sugeriram melhor adaptação do esquistossomo da linhagem H à B. glabrata. A linhagem S, por sua vez, foi três vezes mais virulenta do que a linhagem H. Estes dados foram comparados com os encontrados na literatura especializada e verificado diversidades nos comportamentos parasitológicos das linhagens em estudo, quando comparados com os encontrados nas linhagens H e S oriundas do Vale do Rio Paraíba do Sul, no Estado de São Paulo (Brasil.The wild (W and human (H strains of Schistosoma mansoni were isolated in the Lowland Region of the Maranhão State (Brazil. The snail progenies from Biomphalaria glabrata collected from that region were exposed to the W miracidia, obtained from livers of wild rodents, and H miracidia from eggs in human stools. A control gruop of normal snails was kept in the same conditions as the infected one. The date of the elimination of cercariae, the quantity of eliminated larvae, the infection index of the moluscs and the mortality rate of the snails were recorded. These data suggested better adaptation of the H strain to B. glabrata. The W strain presented three times more virulence to snails than the H strain. These results were compared with published

  10. Procedencia y uso de madera de pino silvestre y pino laricio en edificios históricos de Castilla y Andalucía

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    Rodríguez Trobajo, Eduardo

    2008-12-01

    Full Text Available The productive cycle of Scots pine (Pinus sylvestris L. and black pine (Pinus nigra Arn. within the medieval Castilian and Andalusian carpentry is here analysed. New criteria to identify both timbers and its dendrochronological date are shown as previous facts to determine their geographical origin. Historical names of these species and other names, such as alerce, with a vague allocation are also studied. Main historical areas of resource and river ways of Tajo and Guadalquivir used to transport the wood (black pine to interior cities (Sevilla, Toledo, Madrid … are thus identified. On the other hand, wood’s diversification and its selective use is analysed regarding its resistance value. Availability also determines that a sort of wood becomes fossil-guide (especie-guía, which is proposed as chronological indicator for several periods and constructive contexts. Some timber remains dating to the first millennium are studied in detail. They belong to the Mosque of Cordoba and four early medieval churches sited in the Duero valley (La Nave, Baños, Quintanilla and Barriosuso. The empiric dating and analysis of this material offer a post quem chronology for the building of these churches and new facts about the distribution of theses wood’s species in the north-western Iberian peninsula.Se realiza un recorrido a través del ciclo constructivo de las maderas de pino silvestre (Pinus sylvestris L. y pino laricio (Pinus nigra Arn. en el ámbito de la carpintería medieval de Castilla y Andalucía. Nuevos criterios para diferenciar las dos especies de madera y su datación dendrocronológica, son aportados como datos previos para determinar el origen geográfico del material. Son objeto de discusión los nombres históricos de estas especies y otras voces, como alerce, que tienen una imprecisa asignación. Se identifican así las principales áreas históricas de aprovechamiento y las vías fluviales del Tajo y Guadalquivir utilizadas para el

  11. Observações sobre calazar em Jacobina, Bahia. VI - Investigações sobre reservatórios silvestres e comensais

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    I. A. Sherlock

    1988-03-01

    Full Text Available Durante os anos de 1982 a 1986, a investigação sobre mamíferos comensais e silvestres, da periferia da cidade de Jacobina, Bahia, mostrou, ao lado do escasso número de exemplares, uma reduzida variedade específica dessa fauna. Capturou-se apenas 11 espécies, entre as quais, predominou o Didelphis albiventris, que abrangeu 44% dos 213 espécimens capturados. Entre os 193 com exames já concluídos, 84 eram exemplares de D. albiventris e 2 estavam infectados pela Leishmania donovani senso lato, 1 por L. mexicana amazonensis, 1 por L. braziliensis, subespécie e 3 por Trypanosoma cruzi Também foram observadas formas suspeitas de serem amastigotas de leishmanics, nos esfregaços de órgãos de 3 exemplares de Dasyprocta aguti, 1 Cercomys cunicularius - e 1 Oryzomys eliurus. 0 restante dos exemplares, inclusive 14 de Lycalopex vetulus, estava negativo para flagelados. Apesar de reforçado por outros indicadores epidemiológicos, como a predominância específica, a freqüência domiciliar, a atratividade para a vetora Lutzomyia longipalpis, e a concomitância com casos humanos nos mesmos locais, o índice de 2,3% de infecção natural do Didelphis albiventris, não autoriza a conclusão definitiva de ser o marsupial o mais importante reservatório natural da leishmaniose visceral em Jacobina.From 1982 to 1986, investigations on the natural infection with leishmanias of the sylvatic and commensal mammals were carried out around the city of Jacobina, Bahia, one of the oldest endemic foci of visceral leishmaniasis in Brazil. The species of Marsupialia Didelphis albiventris predominated, with the rate of 44%, over the total of 213 specimens belonging to only 11 different species of mammals collected there. Among the 84 specimens of D. albiventris examined, 2(2.3% were infected with Leishmania donovani sensu lato; 1 with L. mexicana amazonensis, 1 with L. braziliensis sub species, and 3 with Trypanosoma cruzi. Also, amastigote suspected bodies were

  12. Characterization of rust, early and late leaf spot resistance in wild and cultivated peanut germplasm Caracterização da resistência à ferrugem, mancha preta e mancha castanha em germoplasma silvestre e cultivado de amendoim

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    Alessandra Pereira Fávero

    2009-02-01

    Full Text Available Groundnut (Arachis hypogaea has an AB genome and is one of the most important oil crops in the world. The main constraints of crop management in Brazil are fungal diseases. Several species of the genus Arachis are resistant to pests and diseases. The objective of our experiments was to identify wild species belonging to the taxonomic section Arachis with either A or B (or " non-A" genomes that are resistant to early leaf spot (Cercospora arachidicola, late leaf spot (Cercosporidium personatum and rust (Puccinia arachidis. For the identification of genotypes resistant to fungal diseases, bioassays with detached leaves were done in laboratory conditions, with artificial inoculation, a controlled temperature of 25ºC and a photoperiod of 10 h light/14 h dark, for 20-42 days, depending on the fungi species. Most of the accessions of wild species were more resistant than accessions of A. hypogaea for one, two or all three fungi species studied. Arachis monticola, considered to be a possible tetraploid ancestor or a derivative of A. hypogaea, was also more susceptible to Cercosporidium personatum and Puccinia arachidis, as compared to most of the wild species. Therefore, wild germplasm accessions of both genome types are available to be used for the introgression of resistance genes against three fungal diseases of peanut.O amendoim (Arachis hypogaea possui genoma AB e é uma das mais importantes culturas oleaginosas em todo o mundo. Os principais problemas da cultura no Brasil são as doenças fúngicas. Várias espécies do gênero Arachis são resistentes a pragas e doenças. Este trabalho visou a identificar espécies silvestres pertencentes à seção Arachis associadas aos genomas A ou B (ou " não-A" do amendoim que são resistentes à mancha castanha (Cercospora arachidicola, mancha preta (Cercosporidium personatum e ferrugem (Puccinia arachidis. Para a identificação de genótipos resistentes a doenças fúngicas, bioensaios utilizando

  13. Epidemiologia da raiva: caracterização de vírus isolados de animais domésticos e silvestres do semi-árido paraibano da Região de Patos, Nordeste do Brasil

    OpenAIRE

    Albério Antonio de Barros Gomes

    2004-01-01

    No semi-árido paraibano há poucos relatos de ocorrência da raiva, há quem afirme que os caprinos, ovinos e asininos são resistentes à doença e a prática de vacinação é incomum. Este trabalho visou estudar a situação da raiva na região semi-árida de Patos-PB, estabelecendo o diagnóstico desta enfermidade em diferentes espécies de animais domésticos e silvestres. Foram capturados 12 exemplares de raposas (Dusicyon vetulus), por meio de armadilha; 192 morcegos insetívoros (Molossus molossus), ca...

  14. ¿Es la cobertura forestal conservada y restaurada por las zonas protegidas?: El caso de dos áreas silvestres protegidas en el Pacífico Central de Costa Rica

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    J Antonio Guzmán Q

    2015-09-01

    Full Text Available Resumen:Cambios en el uso del suelo son principalmente consecuencia de las acciones antropogénicas. La actual transformación agrícola y urbana en Costa Rica ha generado preguntas acerca de la efectividad de la conservación y restauración dentro de las áreas protegidas. En este documento nosotros analizamos los patrones de cambio del uso del suelo entre tres periodos: 1997, 2005 y 2010 en términos de magnitud, dirección y velocidad a través de mapas categóricos generados por la foto-interpretación para dos áreas silvestres protegidas y sus áreas aledañas: Parque Nacional La Cangreja (LCNP, el Refugio de Vida Silvestre Rancho Mastatal (RMWR y sus áreas aledañas (SA, esta última compuesta por área de un kilómetro de radio fuera de los límites de las áreas protegidas. La matriz que describe el paisaje dentro de las áreas protegidas es la cobertura natural, compuesta principalmente por la cobertura forestal y tacotales. Encontramos que la cobertura natural más abundante para ambas áreas protegidas fue cubierta forestal en todos los años estudiados. La estabilidad y las grandes áreas de la cubierta forestal en LCNP y RMWR para 2005 y 2010 reflejan que las políticas, las acciones de manejo y vigilancia tienen un impacto positivo en la conservación y restauración de los hábitats naturales en esta zona del Pacifico Central Costarricense. Sin embargo, la alta complejidad del paisaje de SA en 1997, 2005 y 2010 son una prueba de presión antropogénica sobre estas áreas protegidas y sugieren una ineficacia de los gobiernos locales para monitorear y disminuir los cambios de uso del suelo que podrían obstaculizar la gestión, conservación y restauración de especies dentro de las áreas protegidas.

  15. Trypanosomatidae de importancia en salud pública en animales silvestres y sinantrópicos en un area rural del municipio Tovar del estado Mérida, Venezuela.

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    Héctor de Lima

    2006-03-01

    Full Text Available Introducción. La enfermedad de Chagas y la leishmaniasis son patologías de gran importancia en salud pública debido a su alta frecuencia y amplia distribución en América Latina. El estudio de los animales reservorios es vital para una comprensión global de estas enfermedades. Objetivo. En el presente trabajo nos propusimos identificar parásitos de la familia Trypanosomatidae en animales silvestres con la finalidad de establecer posibles relaciones debidas a la coinfección. Materiales y métodos. En El Carrizal, un área rural del estado Mérida, Venezuela, entre julio de 1998 y febrero de 2000 se realizaron capturas sistemáticas de animales silvestres con la finalidad de poner en evidencia la presencia de parásitos pertenecientes a la familia Trypanosomatidae. Las capturas fueron realizadas con trampas caseras tipo Tomahawk, colocadas 15 noches por mes durante el periodo del estudio. A los animales capturados se les practicó punción cardiaca bajo anestesia para extracción de sangre con la cual se realizaron los siguientes estudios: examen en fresco, extendido para coloración con Giemsa y cultivo en agar-sangre. Se realizaron algunos xenodiagnósticos. Los aislamientos obtenidos por medio de cultivo se identificaron por medio de análisis de restricción e hibridación con sondas específicas. Resultados. Se capturaron y estudiaron 215 animales pertenecientes a tres especies: Rattus spp. (135, Sigmodon hispidus (73 y Didelphis marsupialis (7. Igualmente, se identificaron tres especies de Trypanosomatidae: Leishmania (V guyanensis, Trypanosoma cruzi y Trypanosoma lewisi. Mientras T. cruzi fue identificado en D. marsupialis (4/7, S. hispidus (1/73 y Rattus spp. (1/135, L.(V guyanensis y T. lewisi sólo se identificaron en Rattus spp. (1/ 135 y 12/135, respectivamente. Conclusión. El estudio de la coexistencia de estas diferentes especies de flagelados genéticamente relacionados nos parece de importancia por las interacciones inmunol

  16. Contribución de Graells a la posición de España en el primer convenio internacional para la protección de ciertas especies de la fauna silvestre (1902

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    Ferrero-García, J. J.

    2012-12-01

    Full Text Available The process followed by Spain to decide whether it should subscribe the International Convention for the Protection of Birds Useful to Agriculture, signed in 1902 is described. The fundamental role played by Mariano de la Paz Graells, one of the foremost Spanish naturalists of the 19th century, in the technical review and acceptance of the draft agreement, drawn up in 1895, is highlighted. Furthermore, a critical analysis of Graells’s position in relation to this so-called first international convention for the conservation of certain wildlife species, has been carried out.

    Se describe el proceso que siguió España para decidir si debía suscribir el Convenio Internacional para la Protección de las Aves Útiles a la Agricultura, firmado en 1902. Se pone de manifiesto el papel fundamental que tuvo Mariano de la Paz Graells, uno de los más importantes naturalistas españoles del siglo XIX, en el examen técnico y aceptación del proyecto de dicho convenio, redactado en 1895. Además, se ha realizado un análisis crítico de la postura de Graells en relación con la que puede calificarse como la primera convención internacional para la conservación de ciertas especies de la fauna silvestre.

  17. CARACTERIZAÇÃO MORFOLÓGICA DE ACESSOS DE GERMOPLASMA DE QUATRO ESPÉCIES BRASILEIRAS DE AMENDOIM-SILVESTRE MORPHOLOGICAL CHARACTERIZATION OF GERMPLASM ACESSIONS OF FOUR BRAZILIAN SPECIES OF WILD PEANUT

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    RENATO FERRAZ DE ARRUDA VEIGA

    2001-01-01

    Full Text Available Caracterizaram-se morfologicamente os acessos de germoplasma de espécies silvestres brasileiras de amendoim do gênero Arachis L., Sect. Arachis e analisaram-se a similaridade genética entre acessos da mesma espécie e entre as espécies. Realizou-se o experimento nos anos agrícolas de 1993 a 1996, no Núcleo Experimental de Campinas, do Instituto Agronômico (IAC. Avaliaram-se os acessos disponíveis no Banco Ativo de Germoplasma de Espécies Silvestres de Arachis, da Embrapa Recursos Genéticos e Biotecnologia (CENARGEN - Brasília, DF, das espécies A. palustris Krapov., W.C. Gregory & Valls, A. decora Krapov., W.C. Gregory & Valls, A. praecox Krapov., W.C. Gregory & Valls e A. stenosperma Krapov. & W.C. Gregory, efetuando-se anotações fenotípicas quantitativas e qualitativas, conforme lista de descritores morfológicos. Observou-se que os acessos de A. stenosperma são semelhantes, apesar da sua grande distância geográfica, e diferem das demais espécies, formando um grupo mais coeso. Caracteres como o diâmetro do eixo central e o comprimento dos frutos e das sementes serviram para distingui-la das demais espécies. Arachis decora apresentou alta variação entre acessos nos vários caracteres morfológicos estudados. A. palustris apresentou alta variação morfológica entre acessos, ainda que tenham sido analisados apenas dois, para altura da planta, largura da semente, dimensões do esporão, istmo, folíolo, raque e eixo central e quanto à presença e ausência de tricomas no folíolo. Arachis praecox, representada por um único acesso, aproximou-se mais de A. decora que das demais espécies.In this work, a morphological characterization of germplasm accessions of wild Brazilian species of peanut, section Arachis was accomplished. Also, an analysis of the genetic similarity among accessions and between species was evaluated. The experiment was undertaken from 1993 to 1996, at the Campinas Experimental Station of the Instituto

  18. Caracterización de sitios de percha del guajolote silvestre (Meleagris gallopavo mexicana en Sierra Fría, Aguascalientes, México Roost sites characteristics of wild turkey (Meleagris gallopavo mexicana in Sierra Fria, Aguascalientes, Mexico

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    Marcelo Márquez-Olivas

    2007-06-01

    Full Text Available Entre octubre y noviembre del año 2001 y mayo de 2002 se localizaron 16 sitios de percha de guajolote silvestre (Meleagris gallopavo mexicana en la Sierra Fría de Aguascalientes. El 87.5% de los sitios se encontraron en bosques de pino-encino (en rodales de pinos, en altitudes de 2500 a 2650 m. En la parte alta (2/3 de la cuesta se localizaron 8 de los sitios y 7 sobre laderas de exposición noreste, en una pendiente promedio de 38.9 ± 12.6%. El 62.5% de los sitios se usaron durante todo el periodo de estudio y el resto, de manera ocasional. La mayoría de los dormideros se encontraron cerca de comederos o cebaderos y de parcelas agrícolas. Se contabilizaron de 1 a 23 árboles de percha utilizados por sitio, distribuidos a una distancia promedio de 24.4 ± 17.8 metros. El 81.2% de los árboles (n=170 fueron pinos (Pinus teocote, P. durangensis, P. leiophylla y P. michoacana, 17.6% encinos (Quercus laurina, Q. grisea y Q. eduardii y 1.2% madroños (Arbutus arizonica. La altura promedio de los árboles fue de 16.6 ± 4.4 m y el diámetro 43.2 ± 11.5 cm. La preferencia del guajolote silvestre por utilizar pinos como dormideros en lugar de otras especies arbóreas, se debe posiblemente a que son árboles de mayor porte o a la conformación de su dosel; sin embargo, se ha observado que en lugares donde hay pocos pinos, los guajolotes utilizan para dormir otros árboles de características semejantes, como encinos, madroños o sicomoros.Sixteen roosting sites of Gould's wild turkey (Meleagris gallopavo mexicana were found between October and November of 2001 and May of 2002 in Sierra Fría, Aguascalientes. A large percentage (87.5% of the roost sites was located in oak-pine forest (in pine stands, at an elevation range of 2500 to 2650 meters. Eight roost sites were on the upper portion (2/3 of the ridge, and 7 at northeast exposures with an average slope of 38.9 ± 12.6%. Most (81.2% of the roost trees (n =170 were pines (Pinus teocote, P

  19. Variabilidade genética de acessos silvestres e comerciais de Passiflora edulis Sims. com base em marcadores RAPD Genetic variability of wild and commercial passion fruit (Passiflora edulis Sims. accessions using RAPD markers

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    Graciele Bellon

    2007-04-01

    Full Text Available No Cerrado brasileiro, há uma grande diversidade de cores, tamanhos e aromas de frutos em acessos silvestres de P. edulis. Estes acessos também são importantes fontes de resistência a doenças, podendo ser incorporados em programas de melhoramento genético do maracujazeiro azedo. Neste trabalho, objetivou-se estimar a variabilidade genética existente em acessos silvestres e comerciais de P. edulis utilizando-se de marcadores RAPD. O DNA genômico de cada acesso foi extraído e amplificado com treze iniciadores decâmeros (OPD-04, OPD-07, OPD-08, OPD-16, OPE-18, OPE-20, OPF-01, OPF-14, OPG-05, OPG-08, OPH-04, OPH-12 e OPH-16 para a obtenção dos marcadores RAPD. Os marcadores obtidos foram convertidos em uma matriz de dados binários, a partir da qual foram estimadas as distâncias genéticas entre os acessos e realizadas análises de agrupamento e de dispersão gráfica. Um total de 187 marcadores foi gerado, sendo que apenas 28 (14,97% deles foram monomórficos. As distâncias genéticas entre os 15 acessos de maracujazeiro variaram de 0,091 a 0,496. Os marcadores moleculares demonstraram a alta variabilidade genética dos acessos de P. edulis, sendo que os acessos de frutos amarelos apresentaram maior distanciamento em relação aos de frutos roxos. Menores distâncias genéticas foram verificadas entre os acessos de mesma origem geográfica.There are a great diversity of colors, sizes and aromas of fruits in wild accessions of P. edulis in Brazilian Savannah. These accessions are also important resistance sources against illness which can be incorpored in passionfruit breeding programs. In this work, the objetive was to evaluate the genetic variability in wild and commercial P. edulis accessions using RAPD markers. The genomic DNA of each accession was extracted and amplified using thirteen decamer primers (OPD-04, OPD-07, OPD-08, OPD-16, OPE-18, OPE-20, OPF-01, OPF-14, OPG-05, OPG-08, OPH-04, OPH-12 and OPH-16 to obtain RAPD markers

  20. Caracterización morfológica y evaluación de resistencia a Fusarium oxysporum en especies silvestres del género Solanum sección Lycopersicon

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    Maria Natalia Morales Palacio

    2014-01-01

    Título corto: Caracterización morfológica y evaluación de resistencia a Fusarium oxysporum Resumen:  Con el objetivo de evaluar la variación morfológica y la resistencia a Fusarium oxysporum en la colección del banco de germoplasma de la Universidad Nacional de Loja (UNL, 146 accesiones de cuatro especies silvestres fueron seleccionadas (Solanum pimpinellifolium, S. neorickii, S. habrochaites, S. lycopersicum var. cerasiforme; y, 20 accesiones de tomate cultivado (S. lycopersicum. Un total de 723 plántulas se transplantaron al campo y se evaluaron morfológicamente durante todo su ciclo biológico, con un descriptor que incluyó 20 caracteres cuantitativos y 25 cualitativos. Se estimó la variabilidad morfológica y se detectaron diferencias fenotípicas relacionadas con el fruto, características vegetativas de las plantas y los componentes del rendimiento. Las variables morfológicas mostraron que S. habrochaites es la especie más diferenciada con relación a las restantes. La podredumbre vascular causada por F. oxysporum es responsable de enormes pérdidas en la producción de tomate en el mundo; sin embargo, las especies silvestres que originaron las variedades cultivadas poseen genes de interés agronómico, utilizados por décadas para la generación de variedades resistentes. Por ello, entre 64 y 228 individuos por especie, se evaluaron por tres procedimientos de inoculación. Todas las especies fueron significativamente diferentes en los niveles de resistencia, tolerancia o susceptibilidad. S. neorickii fue más resistente y tolerante, seguida de S. pimpinellifolium y S. lycopersicum var. cerasiforme, mientras que todas las variedades cultivadas (S. lycopersicum fueron susceptibles. Tales circunstancias permitieron determinar sin lugar a dudas, que las plantas sobrevivientes y tolerantes poseen un genotipo particular que determina esa característica. Palabras clave:  Ecuador, tomate, tolerancia, susceptibilidad, inoculación. Abstract: In order

  1. Periodicidade e intensidade de oocistos do gênero Isospora Schneider, 1881 eliminados nas fezes de passeriformes oriundos do tráfico de animais silvestres e mantidos em quarentena.

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    Cleide Domingues Coelho

    2016-12-01

    Full Text Available Frequência diurna tem sido observada em espécies de parasitos intestinais, especialmente no gênero Isospora Schneider, 1881 em aves selvagens, que eliminam oocistos nas fezes mais frequentemente no final da tarde. Este estudo teve como objetivo avaliar a periodicidade e a eliminação de oocistos por pássaros mantidos no Centro de Triagem de Animais Silvestres, Seropédica, Rio de Janeiro, Brasil triagem. Amostras de uma defecação foram coletadas de 602 pássaros, no período da manhã entre 9 e 12h e à tarde entre 15 e 17h, de maio a novembro de 2010. As amostras foram diluídas em dicromato de potássio a 2,5% 1: 6 (v/v e incubou-se à temperatura ambiente durante sete dias. De cada amostra foi também determinada a OoPD (número de oocistos por defecação, onde observou –se que as amostras fecais coletadas na parte da manhã tiveram um número menor de amostras positivas (12/2% em comparação com àquelas coletadas no fim da tarde os quais apresentaram um maior número de amostras positivas (136/23%, da mesma forma, que os OoPDs de pássaros das famílias Cardinalidae, Emberizidae e Thraupidae também foram diferentes em intensidade. Ambos os resultados indicaram que a periodicidade e a intensidade de oocistos em passeriformes foram extremamente significativas (p<0,0001, quando eles foram determinados usando amostras coletadas no período da tarde.

  2. Preferencias en la anidación de tortugas carey (Eretmochelys imbricata y baulas (Dermochelys coriacea en el Refugio Nacional de Vida Silvestre Gandoca Manzanillo, Limón, Costa Rica

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    Lilliana Piedra-Castro

    2015-09-01

    Full Text Available El Caribe costarricense es importante como sitio de alimentación, copulación, anidación y desove de las tortugas marinas, por lo que el presente trabajo pretendió actualizar el patrón de anidación en las tortugas marinas Dermochelys coriacea y Eretmochelys imbricata en el sector Gandoca, del Refugio Nacional de Vida Silvestre Gandoca Manzanillo, Limón, Costa Rica, para proponer medidas de manejo. Se realizaron recorridos nocturnos entre las 8:00 p. m. y 4:00 a. m., la playa se dividió en cinco sectores, en estos se realizaron observaciones directas y de rastros, de las tortugas que elaboraron el nido, entre febrero y agosto del 2011 y 2012. Se registraron tres especies de tortugas marinas, Dermochelys coriacea, Eretmochelys imbricata y Chelonia mydas. La anidación de tortugas baula tuvo su punto máximo entre marzo y julio; por su parte, las carey, entre mayo y junio (2011, y junio hasta agosto en el 2012. Se observó preferencia en la posición de la playa utilizada para construir sus nidos; la baula utiliza principalmente la parte media, mientras que la carey utilizó mayormente la parte baja para anidar (t = 17.2525. Se observó que la baula utilizó frecuentemente el sector C; sin embargo, no se encontraron diferencias en el uso de los sectores. Se concluye que ambas especies tienen preferencias en la selección de la zona de playa en que anidan; la carey en la parte baja cerca de la línea de costa y la baula en la parte media. Además, las tortugas baula utilizan indistintamente los diferentes sectores de la playa estudiada.

  3. Identificação de roedores silvestres como hospedeiros do Angiostrongylus costaricensis no sul do Brasil Identification of wild rodents as hosts of Angiostrongylus costaricensis in the South of Brazil

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    Carlos Graeff-Teixeira

    1990-06-01

    Full Text Available Um número crescente de casos de angiostrongilíase abdominal tem sido detectado no sul do Brasil. O principal hospedeiro do Angiostrongylus costaricensis na América Central, o rato do algodão (Sigmodon hispidus, não ocorre na América do Sul, exceto no norte do Peru, Colômbia e Venezuela. Foram realizadas capturas na área endêmica do Rio Grande do Sul (RS, visando identificar hospedeiros para obtenção de vermes em laboratório e produção de antígeno. Pela primeira vez no Brasil foi constatada a infecção em roedores: Oryzomys nigripes e Oryzomys ratticeps. O. nigripes é um roedor silvestre de pequeno porte e parece ser o principal hospedeiro definitivo do A. costaricensis na região serrana do RS.Increasing number of human cases of abdominal angiostrongyliasis has been diagnosed in the south of Brazil. The main definitive host of Angiostrongylus costaricensis in Central America is the cotton rat (Sigmodon hispidus that does not occur in South America, except in the north of Colombia, Peru and Venezuela. Rodents were captured in the endemic area in Rio Grande do Sul (RS and definitive hosts were identified for the first time in Brazil: Oryzomys nigripes and Oryzomys ratticeps. O. nigripes is a small wild rodent and it appears to be the main definitive host of A. costaricensis in the highlands of RS, Brazil's southermost State.

  4. Evaluación y valorización económica de la fauna silvestre en el río Algodón, Amazonía peruana

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    Rolando Aquino

    2013-04-01

    Full Text Available El presente trabajo informa sobre los hábitats, abundancia cuantitativa y valorización económica de la fauna silvestre que habitan en la cuenca del río Algodón. El estudio está basado en la diferenciación de hábitats, entrevistas a cazadores y censos por transecto. En 7 de los 10 tipos de hábitats diferenciados fueron realizados censos, donde ocurrieron en total 327 avistamientos directos de mamíferos, aves y reptiles. Entre los mamíferos, el pecarí labiado (Tayassu pecari Link y el choro (Lagothrix lagotricha Humboldt fueron los más abundantes con 9,8 individuos/km2, equivalente a 323,4 kg/km2 de biomasa, y 18,4 individuos/km2 equivalente a 202,4 kg/km2 de biomasa, respectivamente. En aves, la mayor densidad correspondió a la pucacunga (Penelope jacquacu Spix con 5,4 individuos/km2, equivalente a 6,9 kg/km2 de biomasa. Sin considerar las especies nocturnas y algunas diurnas, en el área de estudio se estiman alrededor de 31891 animales de caza entre mamíferos y aves, cuyo valor económico fue estimado en US$ 349374. De ellos, 3479 individuos tienen el valor de comercial y pertenecen a cuatro especies de ungulados y uno de aves, el resto tienen el valor de subsistencia.

  5. Conducta alimenticia, supervivencia y crecimiento de juveniles silvestres de Graus nigra Philippi, 1887 en cautiverio (Perciformes: Kyphosidae Feeding behavior, survival, and growth of wild Graus nigra Philippi, 1887 juveniles in captivity (Perciformes: Kyphosidae

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    Héctor Flores

    2011-11-01

    Full Text Available Se colectaron juveniles silvestres de Graus nigra, que fueron aclimatados durante 30 días en estanques con flujo de agua abierto y a temperatura ambiente, siendo alimentados con alimento formulado. Los peces fueron separados en seis grupos que se mantuvieron en experimentación por 196 días. La supervivencia promedio fue de 80%. El crecimiento en longitud total mostró un incremento promedio del 93,3% para los juveniles grandes (grupos 4, 5 y 6 y 125% para los pequeños (grupos 1, 2 y 3. El crecimiento en peso total mostró un incremento promedio de 434% para los peces grandes (grupos 4, 5 y 6 y de 707% para los pequeños (grupos 1, 2 y 3. Se concluyó que G. nigra toleró el cautiverio y el manejo, con una supervivencia relativamente alta, lo que hace de ella una especie atractiva para la acuicultura chilena.Wild juveniles of Graus nigra were collected and acclimated for 30 days in ponds with open-water flow and ambient temperature; the specimens were given a formulated feed. Fish individuals were separated into six groups that were studied for 196 days. The average survival was 80%. The total length increased an average of 93.3% for large individuals (groups 4, 5, 6 and 125% for small ones (groups 1, 2, 3. The total weight showed an average increase of 434% for large fishes (groups 4, 5, 6 and 707% for small ones (groups 1, 2, 3. Graus nigra was found to tolerate captivity and handling, with a relatively high survival rate, making it an attractive species for aquaculture in Chile.

  6. Leishmania (Leishmania infantum chagasi em canídeos silvestres mantidos em cativeiro, no Estado de Mato Grosso Leishmania (Leishmania infantum chagasi in wild canids kept in captivity in the State of Mato Grosso

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    Nely Pinheiro Souza

    2010-06-01

    Full Text Available INTRODUÇÃO: Leishmaniose visceral é uma zoonose que acomete diversos mamíferos tendo os canídeos domésticos como principais reservatórios em ambiente urbano. A presente nota descreve a infecção de canídeos silvestres por Leishmania (Leishmania infantum chagasi mantidos em cativeiro no Estado de Mato Grosso, Brasil. MÉTODOS: De seis raposas (Cerdocyon thous e um cachorro vinagre (Spheotos venaticus, foram coletadas amostras de pele, medula óssea e linfonodo para detecção e caracterização de Leishmania sp pela técnica de PCR-RFLP. RESULTADOS: Todos as animais pesquisados apresentaram-se positivos para Leishmania (L. infantum chagasi. CONCLUSÕES: Destaca-se a importância de monitoramento adequado dos mesmos, além do maior controle desta enfermidade já que estes animais estão em ambientes de recreação pública.INTRODUCTION: Visceral leishmaniasis is a zoonosis that affects many mammals, and domestic canids are the main reservoirs in urban environments. This note describes infection by Leishmania (Leishmania infantum chagasi among wild canids kept in captivity in the State of Mato Grosso, Brazil. METHODS: Skin, bone marrow and lymph node samples were collected from six crab-eating foxes (Cerdocyon thous and one bush dog (Spheotos venaticus, in order to detect and characterize Leishmania using the PCR-RFLP technique. RESULTS: All the animals studied were positive for Leishmania (L. infantum chagasi. CONCLUSIONS: This study highlights the importance of adequate monitoring of these animals, as well as greater control of this disease, given that these animals are in a public recreation environment.

  7. Aspectos do ciclo silvestre do Trypanosoma cruzi em regiões de cerrado (Município de Formosa, Estado de Goiás Aspects of the sylvatic cycle of Trypanosoma cruzi in the region of cerrado (Formosa municipality, State of Goias

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    D. A. Mello

    1981-09-01

    Full Text Available Neste trabalho estão apresentados resultados de estudos sobre roedores, marsupiais e triatomíneos do norte do municipio de Formosa,Estado de Goiás, e sua importância no ciclo silvestre do T.cruzi. A região estudada esta localizada do ponto de vista geográfico, na "Provincia do Cerrado". Foram coletados 963 roedores, 11 marsupiais e 766 triatomíneos silvestres. O índice de infecção pelo T. cruzi entre os roedores foi de 0,1% e entre os marsupiais 36,3%, enquanto todos os triatomíneos estavam negativos. Face aos aspectos ecológicos estudados, discute-se o papel desempenhado por roedores e marsupiais na manutenção e circulação do T. cruzi em ambiente silvestre. Alguns aspectos epidemiológicos no ambiente doméstico foram também abordados.Studies were carried out on the role of rodents, marsupials and triatoma bugs in the wild cycle of Trypanosoma cruzi. The area studied, located in the county of formosa, State of Goiás, Brasil, belongs to the "Província do Cerrado". The following animals were collected and examined: 963 rodents, 11 marsupials and 766 wild triatomid bugs. The infection rates for T. cruzi were as follow: 36.3% for the marsupials, 0.1% for the rodents, while all the triatomids were negative. The role of the collected mammals in the maintenance and circulation of T. cruzi in the wild environment is discussed. In addition, some epidemiological aspects of the domestic environment were also studied.

  8. Characterization and cultivation of a wild mushroom species isolated in Brazil Caracterização e cultivo de uma espécie de cogumelo silvestre isolado no Brasil

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    Luzia Doretto Paccola-Meirelles

    2002-11-01

    Full Text Available Wild mushrooms were collected close to cattle manure in pasture areas in Tamarana (Paraná/Brazil, with the objective of finding and domesticating new non-exploited basidiomycetes. An edible basidiomycete of the Agaricales order was classified as belonging to the Macrolepiota bonaerensis species (=Lepiota procera, form bonaerensis (Speg. Rick or M. procera (Scop.:Fr Sing.. The mycelia was isolated and characterized for growth rate in different culture media. A vigorous growth was observed in PDA Medium (pH 5, ±25°C. The oat culture medium was the most appropriate for cultivation submersed. M. bonaerensis mycelia secretes lipase, cellulase and protease exoenzyme types. Cytological analyses confirmed the bi-nucleated condition of the mycelia, the presence of septa and clamp connections in the hypha. The fructification occurred in the substrate composed of sterilized humus + soil (1:9 plus casing layer with active carbon. Visando a busca e a domesticação de basidiomicetos ainda inexplorados, coletou-se cogumelos silvestres em regiões de pastagens e próximos a esterco de gado no município de Tamarana, PR. Um basidiomiceto comestível da ordem Agaricales foi classificado como pertencente à espécie Macrolepiota bonaerensis (=Lepiota procera, forma bonaerensis (Speg. Rick ou M. procera (Scop.:Fr. Sing.. O micélio foi isolado e caracterizado em relação à taxa de crescimento em diferentes meios de cultura. Observou-se um crescimento vigoroso em meio BDA (pH 5, ±25°C. O meio de aveia foi o mais adequado para cultivo submerso. O micélio de M. bonaerensis secreta enzimas dos tipos lipase, celulase e protease, e as análises citológicas confirmaram a condição binucleada do micélio, a presença de septos e de grampos de conexão nas hifas. A frutificação dos cogumelos ocorreu no substrato constituído de húmus + terra (1:9 esterilizados, acrescido de terra de cobertura e carvão ativado.

  9. Capítulo V: evaluación de especies silvestres de Lycopersicon sp. como fuente de resistencia al insecto plaga Scrobipalpula absoluta (Meyrick y su intento de transferencia a Lycopersicon esculentum Mill

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    Vallejo Cabrera Franco Alirio

    1994-12-01

    Full Text Available

    En condiciones de campo, se evaluaron 32 introducciones silvestres de Lycopersicon sp. y una de la especie cultivada, L. esculentum Mill, con el fin de determinar la resistencia a Scrobipalpula absoluta (Meyrick. Se utilizó el diseño experimental bloques completos al azar con 4 repeticiones. Como bordes se colocaron tres variedades comerciales susceptibles al insecto (Chonto "Mata Verde", Napoli Y Chonto "Santa Cruz Kada" con el fin de tener una fuente de infestación natural y permanente del cogollero dentro del experimento. Se evaluaron los caracteres número de cogollos afectados, número de hojas dañadas, número de ampollas e intensidad de daño. Todas las introducciones de L. hirsutum y L. peruvianum fueron altamente resistentes. Las introducciones 1406 y 1407 de L. pimpinellifolium también fueron altamente resistentes. La introducción 1759 de L. esculentum y L. esculentum var. ceraciforme fueron muy susceptibles. Las introducciones de L. pimpinellifolium y L. hirsutum no tuvieron dificultad para hibridarse con L. esculentum var. Tropic. El cruzamiento L. esculentum x L. peruvianum no presentó semilla híbrida y se requirió efectuar cultivo de embriones inmaduros, in vitro, utilizando el medio Murashige & Skoog pero sin lograrse resultados positivos.

    Thirty two (32 wild accessions of Lycopersicon sp. and one (1 cultivated accession of Lycopersicon esculentum Mill were evaluated to determinate the resistance to Scrobipalpula absoluta (Meyrick. The experiment was conducted with a complete random design and four repetitions. Three (3 susceptibles cultivated accessions of L. esculentum (Chonto "Mata Verde", Napoli and Chonto "Santa Cruz Kada" were sowed to have natural infestation of S. absoluta. Damage intensity, number of buds damaged, number of leaves demaged and number of "blister" in the leaves were evaluated, All evaluated accessions of L. peruvianum showed heigh resistence. 1406 and 1407 accessions of L. pimpinellifolium

  10. Microbiologia de swabs retais e otológicos em carnívoros silvestres do zoológico do Parque Estadual de Dois Irmãos, Pernambuco

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    Débora Costa Viegas de Lima

    2012-02-01

    Full Text Available O estudo epidemiológico de patógenos em populações selvagens no ambiente in situ e ex situ é fundamental para implementação de programas de prevenção, controle e monitoramento de enfermidades e para elaboração de políticas públicas de saúde pública e animal. O estudo foi realizado no zoológico do Parque Estadual de Dois Irmãos no período de janeiro a julho de 2011 onde foram coletados swabs anais e otológicos referentes a 29 carnívoros silvestres cativos do zoológico. Dos swabs otológicos analisados, 1/29 (3,4% foi positivo para Malassezia pachy dermatis no exame direto. No exame microbiológico dos swabs otológicos, observou-se maior freqüência para bactérias do gênero Bacillus 16/29 (55,2%, seguida de Sta phylococcus 15/29 (51,7%, Escherichia coli 7/29 (24,1%, Streptobacillus 1/29 (3,4%, Micrococcus 1/29 (3,4% e Klebsiella 1/29 (3,4%. Com relação ao exame presuntivo para o gênero Salmonella a partir das amostras de swab retal, observou-se positividade para seis raposas (Cerdocyon thous e um guaxinim (Procyon cancrivorus. O isolamento de Salmonella spp. em C. thous e em P. cancrivorus indica um risco à saúde pública, principalmente para os profissionais do zoológico que trabalham diretamente com esses animais. Essa pesquisa reforça a importância da criação de estratégias de vigilância epidemiológica voltadas para a prevenção, controle e monitoramento de potenciais reservatórios de agentes etiológicos de doenças infecciosas e parasitárias no ambiente dos zoológicos.

  11. ISOLATION AND IDENTIFICATION OF STRAINS OF Salmonella spp IN RED-FOOT-TORTOISES FROM WILDLIFE TRADE ISOLAMENTO E IDENTIFICAÇÃO DE CEPAS DE Salmonella spp DE JABUTIS-PIRANGA ORIUNDOS DO TRÁFICO DE ANIMAIS SILVESTRES

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    Oberdan Coutinho Nunes

    2010-04-01

    Full Text Available We investigated Salmonella sp. in red-foot tortoise (Chelonoides carbonaria because of the fact this particular reptile shows high frequency of illegal commerce, and also because this situation represents a serious risk for health. We collected feces of 89 turtles from the wildlife center “Chico Mendes” - IBAMA/SUPES-BA. Characteristic colonies of Salmonella sp. were isolated in 12.36% of the tortoises (11/89. Nine colonies were identificated at the Adolfo Lutz Institute, distributed into six different sorotypes: S. enterica salamae 47:b:-; S. enterica houtenae 21:g,z51; S. Panama; S. Poona; S. Javiana e S. Michigan. All of them, according to literature, without previous description of infection in C. carbonaria whatsoever. However, there are previous cases of infections and antibiotics resistance involving these sorotypes, confirming the risk represented by wildlife trade to public health concerning the children’s exposition to the source of infection as well as the dissemination of resistant sorotypes.

    KEY WORDS: Epidemiology, reptiles, zoonosis.

    Este trabalho objetivou investigar a ocorrência de Salmonella sp. em jabutis-piranga (Chelonoides carbonaria, dada sua elevada frequência no comércio ilegal e risco que representa para a saúde. Coletaram-se fezes de 89 jabutis mantidos no Centro de Triagem de Animais Silvestres Chico Mendes – IBAMA/SUPES-BA. Isolaram-se colônias características de Salmonella sp. em 12,36% dos jabutis (11/89. Destas, nove foram identificadas no Instituto Adolfo Lutz (São Paulo, distribuindo-se em seis diferentes sorovares: S. enterica salamae 47:b:-; S. enterica houtenae 21:g,z51; S. Panama; S. Poona; S. Javiana e S. Michigan, todas, segundo a literatura consultada, sem prévia descrição para C. carbonária. No entanto, estão presentes em relatos de infecções e em estudos sobre resistência a antibióticos, confirmando o risco representado pelo tráfico de animais para a sa

  12. Teste de ELISA indireto para diagnóstico sorológico de leishmaniose visceral em canídeos silvestres Indirect ELISA for the serological diagnosis of visceral leishmaniasis in wild canids

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    Paulo R.B. Ferreira

    2013-04-01

    Full Text Available Na América do Sul, alguns canídeos silvestres são considerados reservatórios naturais da Leishmania chagasi. A resposta imunológica desses animais à Leishmania é pouco conhecida, havendo a necessidade de métodos diagnósticos adequados para esse fim. No presente estudo, é descrita a padronização do ensaio imunoenzimático indireto (ELISA para o diagnóstico sorológico de leishmaniose visceral em canídeos silvestres brasileiros. Foram estudadas amostras de soro e plasma de 12 canídeos cativos: sete lobos-guará (Chrysocyon brachyurus, três raposinhas (Lycalopex vetulus e dois cachorros-do-mato (Cerdocyon thous. As amostras de um C. brachyurus e uma L. vetulus, cativos em área endêmica para LV, que apresentavam doença clínica e positividade em testes de Imunofluorescência Indireta e Reação em Cadeia de Polimerase, foram utilizadas como controles positivos. Foram comparados os conjugados anti-IgG de cão e proteína A, ambos ligados a peroxidase, cujos testes detectaram quatro (04/12 e três (03/12 C. brachyurus soropositivos para anticorpos anti-Leishmania sp., respectivamente. As médias das densidades ópticas (DOs das amostras negativas foram nitidamente mais baixas do que as médias das DOs dos positivos tanto no ELISA com anti-IgG de cão (4,8 vezes como com proteína A (15,5 vezes. Os soros de três C. brachyurus positivos no ELISA indireto foram avaliados por Western blotting e identificaram 22 bandas, sendo imunodominantes as de peso molecular de 19, 22, 24, 45 e 66 kDa. Os testes ELISA com a proteína A e o conjugado anti-IgG de cão apresentaram respectivamente concordância excelente (Kappa = 1; pIn South America, some wild canids are considered natural reservoirs of Leishmania chagasi. The immunological response of wild canids to Leishmania is not well understood, and the development of diagnostic methods is necessary for such purpose. In the present study, the standardization of an enzyme-linked immunosorbent

  13. Functional characterisation of three zinc transporters in Thlaspi caerulescens

    NARCIS (Netherlands)

    Talukdar, S.

    2007-01-01

    Heavy metal hyperaccumulation in plants is a poorly understood phenomenon. Transmembrane metal transporters are assumed to play a key role in this process. In the research described in this thesis, genes encoding Zn transporters of Thlaspi

  14. Entomological investigation of a sylvatic yellow fever area in São Paulo State, Brazil Investigação entomológica em área de ocorrência de febre amarela silvestre no Estado de São Paulo, Brasil

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    Vera L. F. de Camargo-Neves

    2005-08-01

    Full Text Available Following reports of two autochthonous cases of sylvatic yellow fever in the State of São Paulo, Brazil, in 2000, entomological surveys were conducted with the objective of verifying the occurrence of vector species in forest environments close to or associated with riparian areas located in the western and northwestern regions of the State. Culicidae were captured in 39 sites distributed in four regions. Haemagogus leucocelaenus and Aedes albopictus were the most abundant species and were captured in all the regions studied. H. leucocelaenus was the most abundant species in the municipalities of Santa Albertina and Ouroeste, where the two cases of sylvatic yellow fever had been reported. Mosquitoes from the janthinomys/capricornii group were only found at eight sites in the São José do Rio Preto region, while Sabethes chloropterus was found at one site in Ribeirão Preto. H. leucocelaenus showed its capacity to adapt to a secondary and degraded environment. Our results indicate a wide receptive area for yellow fever transmission in the State of São Paulo, with particular emphasis on the possibility of H. leucocelaenus being involved in the maintenance of this sylvatic focus of the disease.O registro de dois casos autóctones de febre amarela silvestre no Estado de São Paulo, Brasil, em 2000, desencadeou investigações entomológicas com o objetivo de verificar a ocorrência das espécies vetoras em ambientes florestais próximos ou associados às zonas ribeirinhas, situados nas regiões oeste e noroeste do Estado. As capturas foram realizadas em 39 localidades distribuídas por quatro regiões do Estado. Haemagogus leucocelaenus e Aedes albopictus foram as espécies mais abundantes e capturadas em todas as regiões. H. leucocelaenus foi a espécie mais abundante nos municípios de Santa Albertina e Ouroeste, onde os casos de febre amarela silvestre foram registrados. Mosquitos do grupo janthinomys/capricornii foram encontrados em oito

  15. The ecology of Triatoma sordida in natural environments in two different regions of the state of Minas Gerais, Brazil Ecologia do Triatoma sordida no ambiente silvestre de duas diferentes regiões do estado de Minas Gerais, Brasil

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    L. Diotaiuti

    1993-06-01

    Full Text Available A study was undertaken about T. sordida in the natural environment in two different regions of the state of Minas Gerais: Itapagipe (Triângulo, an area of cerrado modified by the formation of fields of pasture and agriculture, and Mato Verde (north an area of transition between caatinga and cerrado with profound deforestation in the last years due to the expansion of cotton cultivation. In both regions the principal ecotopes identified were hollow trees and the bark of live or dead trees, where the occurrence of a food source is not frequent. In this environment, the triatomines utilize various food sources; opposums appear to represent an important source of infection. In the north of Minas, a greater concentration of reservoirs and vectors was observed than in the Triángulo which could explain the higher level of infection of the triatomines in the north. Close attention to the process of domiciliation of T. sordida in the north of Minas is recommended where an extensive intervention by man in the natural environment has occurred and where a rise in the population of triatomines in the peridomestic environment has been observed in recent years.Foi realizado um estudo sobre o T. sordida em ambiente silvestre em duas diferentes regiões do estado de Minas Gerais: Itapagipe (Triângulo, área de cerrado modificado para formação de campos de pastagem e agricultura, e Mato Verde (norte uma área de transição entre a caatinga e o cerrado, profundamente desmatada nos últimos anos com a finalidade de expansão do cultivo de algodão. Em ambas as regiões, os principais ecotopos identificados corresponderam a buracos e cascas de árvores vivas ou mortas, onde a ocorrência de fontes de alimentação não é frequente. Neste ambiente, os triatomíneos utilizam-se de variadas fontes de alimentação; gambás parecem representar urna importante fonte de infecção. No norte de Minas, observou-se urna maior concentração de reservatórios e vetores

  16. Behavioral experiments in a wild passerine cause short-term reductions in parental provisioning and nestling mass Experimentos conductuales en un ave paserina silvestre causan reducciones de corto plazo en el cuidado parental y peso de pichones

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    WOUTER F.D VAN DONGEN

    2009-06-01

    Full Text Available Research on wild animals often involves the capture and temporary removal of individuals from their territory. Although the acute effects of such procedures are well understood in terms of stress hormone profiles, their effect on the behaviour of captured individuals after release is poorly known. Additionally, for socially-monogamous individuals captured whilst breeding, little is known regarding whether the remaining individual compensates for the temporary loss of its partner and whether offspring condition or survival ultimately decreases due to any reductions in parental provisioning. We investigated the influence of field-based experiments requiring temporary adult removal on adult provisioning behaviour and nestling mass in the thorn-tailed rayadito (Aphrastura spinicauda, a Chilean furnariid species with equal parental effort between sexes. During the absence of the removed individual, remaining individuals did not increase nestling provisioning rates while, upon their release, removed individuals did not return to nestling feeding for at least 38 minutes and typically much longer. This drastic reduction in combined parental provisioning negatively affected nestling mass, while average nestling mass increased during a control period, nestlings failed to gain weight during and subsequent to parental removal. Finally, our experiments did not affect fledging probability. Overall, our results indicate that the temporary removal of rayaditos from their territories can cause short-term reductions in parental provisioning and nestling weight, but is unlikely to lead to any long-term effects on nestling survival.Las investigaciones en animales silvestres frecuentemente requieren la captura y remoción de individuos de sus territorios. Si bien se conocen los efectos a nivel hormonal de tales métodos, sus efectos sobre la conducta de los individuos después de la liberación son escasamente conocidos. Además, para individuos de especies mon

  17. Comparison of Pollen Production and Quality Characteristics of Cultivated and Wild Almond Species Comparación de Producción y Características de Calidad del Polen de Especies de Almendro Cultivadas y Silvestres

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    Safder Bayazit

    2011-12-01

    breeding programs.Hay varias especies de almendros silvestres en Turquía incluidas Amygdalus orientalis (Mill., Amygdalus turcomanica (Lincz., Amygdalus fenzliana (Fritsch Lipsky, Amygdalus trichamygdalus (Hand.-Mazz. Woronow, Amygdalus arabica (Olivier, y Amygdalus webbii (Spach. Estas especies ofrecen un gran valor para mejoramiento del almendro; se estudió la viabilidad del polen, tasa de germinación, y producción de polen para siete genotipos de A. orientalis y siete genotipos de A. turcomanica cultivados en condiciones naturales en el sudeste de Anatolia (Gaziantep and §anhurfa provinces, Turkey. También se estudiaron cultivares de almendros (Prunus dulcis [Mill.] D.A. Webb obtenidos desde Pozanti Agricultural Experimental Station, Universidad de Cukurova. Las viabilidades de polen de los diversos genotipos se determinaron por las pruebas 2,3,5-trifeniltetrazolium cloruro (TTC y fluoresceína diacetato (FDA. Las tasas de germinación de polen se establecieron en condiciones de placas Petri (1% agar + 0, 10, 15, y 20% sucrosa mientras la producción de polen se estimó con métodos hemocitométricos. Las tasas de viabilidad de polen fueron cercanas entre ambos métodos para los genotipos de A. orientalis y A. turcomanica. Las tasas de germinación de polen fueron dependientes del contenido de sucrosa y del genotipo. Los cultivares mostraron tasas de germinación de polen similares en todas las concentraciones de sucrosa mientras el polen de los genotipos A. orientalis y A. turcomanica mostraron mayores tasas de germinación en 10% sucrosa. El número de anteras por flor fue mayor en los cultivares mientras el número de granos de polen fue menor en otras especies de almendro. Mientras el número de granos de polen por flor fue relativamente alto en genotipos de A. orientalis, la calidad del polen fue alta en las tres especies en investigación. Los resultados sugirieron que estas dos especies, A. orientalis y A. turcomanica, podrían ser usadas para futuros

  18. Parasites of domestic and wild canids in the region of Serra do Cipó National Park, Brazil Parasitos de canídeos domésticos e silvestres na região do Parque Nacional da Serra do Cipó - Brasil

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    Juliana Lúcia Costa Santos

    2012-09-01

    Full Text Available Over recent decades, diseases have been shown to be important causes of extinctions among wild species. Greater emphasis has been given to diseases transmitted by domestic animals, which have been increasing in numbers in natural areas, along with human populations. This study had the aim of investigating the presence of intestinal helminths in wild canids (maned wolf, Chrysocyon brachyurus, and crab-eating fox, Cerdocyon thous in the Serra do Cipó National Park (43-44º W and 19-20º S and endo and ectoparasites of domestic dogs in the Morro da Pedreira Environmental Protection Area (an area surrounding the National Park. The Serra do Cipó is located in the state of Minas Gerais, Brazil. Among the enteroparasites found in domestic and wild canids, the following taxons were identified: Ancylostomidae, Trichuridae, Toxocara sp., Spirocerca sp., Physaloptera sp., Strongyloides sp., Cestoda, Dipylidium caninum, Diphyllobothriidae, Hymenolepidae, Anoplocephalidae, Trematoda, Acanthocephala and Isospora sp. Domestic dogs were positive for leishmaniasis and Babesia canis in serological tests. Among the ectoparasites, Rhipicephalus sanguineus, Amblyomma cajennense and Ctenocephalides felis felis were observed in domestic dogs. Variations in the chaetotaxy of the meta-episternum and posterior tibia were observed in some specimens of C. felis felis.Nas últimas décadas, as doenças têm sido apontadas como importantes causas de extinção de espécies silvestres. Maior ênfase tem sido dada às doenças transmitidas por animais domésticos que crescem em número, bem como as populações humanas, em áreas naturais. O presente estudo objetivou verificar a presença de helmintos intestinais de canídeos silvestres (lobo-guará - Chrysocyon brachyurus e cachorro-do-mato - Cerdocyon thous do Parque Nacional da Serra do Cipó (43-44º W e 19-20º S e endo e ectoparasitos de cães domésticos da Área de Proteção Ambiental Morro da Pedreira (entorno do

  19. Ocorrência de Giardia, Cryptosporidium e microsporídios em animais silvestres em área de desmatamento no Estado de São Paulo, Brasil Occurrence of Giardia, Cryptosporidium and microsporidia in wild animals from a deforestation area in the state of São Paulo, Brazil

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    Maria Anete Lallo

    2009-08-01

    Full Text Available A ocorrência de Giardia, Cryptosporidium e microsporídios foi investigada por meio da análise de 98 amostras fecais de animais silvestres capturados em uma área de desmatamento para a construção das barragens de Paraitinga e Biritiba, localizadas nos Municípios de Mogi das Cruzes, Salesópolis e Biritiba-Mirim, no Estado de São Paulo. As amostras foram obtidas de 46 roedores, 21 marsupiais, 16 sapos, nove morcegos, três primatas e três lagartos. As técnicas de centrífugo-flutuação com sulfato de zinco, de Kinyoun e a coloração de Gram-Chromotrope foram utilizadas, respectivamente, para a pesquisa de Giardia, de Cryptosporidium e de microsporídios. O total de animais parasitados por um dos protozoários investigados foi de 17,35% (17/98. Cistos de Giardia foram encontrados em amostras fecais de dois pequenos roedores da espécie Coendou villosus (ouriço-cacheiro. Os três animais positivos para Cryptosporidium foram roedores das espécies Akodon montensis, Thaptomys nigrita (ambos conhecidos como ratos do mato e Sciurus aestuans (serelepe ou caxinguelê. Esporos de microsporídios foram encontrados nas fezes de 12 animais, sendo seis roedores das espécies Oligoryzomys sp.(um, Akodon montensis (três e Coendou villosus (dois, três marsupiais pertencentes às espécies Didelphis aurita (dois e Marmosops incanus (um e três morcegos da espécie Diphylla ecaudata. Este é o primeiro relato de microsporidiose em animais silvestres no Brasil. A presente investigação enfatiza a importância de animais silvestres, particularmente pequenos mamíferos, como potenciais fontes de infecção desses protozoários para outras populações animais, incluindo o homem, em áreas de desmatamento.The occurrence of Giardia, Cryptosporidium and microsporidia was investigated in 98 faecal specimens from wildlife animals, captured in an area of deforestation for the construction of two water reservoirs (Paraitinga and Biritiba, located in the

  20. Flebotomíneos coletados em matas remanescentes e abrigos de animais silvestres de zoológico no perímetro urbano de Maringá, sul do Brasil. Estudo preliminar Phlebotomines collected in remaining florests and wild animal shelters in zoological garden in the urban area of Maringá, Paraná State, shoutern Brazil. Preliminary study

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    Ueslei Teodoro

    1998-12-01

    Full Text Available Um caso de leishmaniose tegumentar com provável infecção em uma das áreas de matas remanescentes no perímetro urbano de Maringá, Paraná, Brasil, o desconhecimento da fauna e do comportamento de flebotomíneos nestas matas despertaram o interesse desta investigação. Os flebotomíneos foram coletados com armadilhas de Falcão instaladas em matas remanescentes do Parque do Ingá, Bosque Dois e Horto Florestal, de junho a setembro de 1995, no período noturno. Nestas áreas coletaram-se 3.532 flebotomíneos, prevalecendo Lutzomyia (Nyssomyia whitmani (Antunes & Coutinho, 1939 com 3.395 (96,1% exemplares. No Parque do Ingá, onde as coletas também foram feitas em abrigos de animais silvestres, mantidos em zoológico, foram coletados 2.907 flebotomíneos, dos quais 1.723 nestes abrigos. Os resultados mostram melhor adaptação de Lutzomyia whitmani nas matas remanescentes no perímetro urbano de Maringá e sua freqüência nos abrigos dos animais silvestres mantidos em cativeiro.The present study was undertaken after the detection of one case of cutaneous leishmaniasis with presumed infection in one of the three remaining wooded areas in the urban area of the city of Maringá, Southern Brazil; also in view of the lack of knowledge about sand flies and their behavior. From June to September, 1995, sand flies were caught with Falcão traps during the night in the remaining wooded areas (Parque do Ingá, Bosque Dois and Horto Florestal. A total of 2,907 sand flies were caugth in Parque do Ingá; 1,723 of them were aught in forest traps and 1,184 in wild animal shelter traps at the zoo. The results show that Lutzomyia whitmani is better adapted to the three areas under study and that it frequently occurs in wild animal shelters within the urban perimeter of Maringá.

  1. Whitefly species (Hemiptera: Aleyrodidae on wild and cultivated plants in the horticultural region of Rosario, Santa Fe, Argentina Especies de moscas blancas (Hemiptera: Aleyrodidae sobre plantas silvestres y cultivadas en la región hortícola de Rosario, Santa Fe, Argentina

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    Gustavo G. Gonsebatt

    2012-06-01

    Full Text Available Whiteflies of economic importance are polyphagous, being able to develop on a large number of cultivated and spontaneous plants. We recorded the whitefly species on vegetable and flower crops and the wild plants associated, under greenhouse and field conditions, for two years. We observed two species: Trialeurodes vaporariorum (Westwood and the Bemisia tabaci complex (Gennadius. T vaporariorum was recorded on 24 plant species (11 families, 12 and 8 of which are new hosts in Argentina and in the world, respectively. The B. tabaci complex was recorded only on flower production systems, on 19 plant species (11 families, 14 and 7 of which are new hosts in Argentina and in the world, respectively. The crops Glycine max (L. and Chrysanthemum morifolium Ramat., the wild species Amaranthus blitum L., Amaranthus quitensis Kunth, Conyza bonariensis (L., Galinsoga parviflora Cav., Sonchus oleraceus L. and Wedelia glauca (Ortega O. Hoffm. ex Hicken were hosts of both species. The only parasitoid recorded was Eretmocerus californicus near corni Haldeman (Hymenoptera: Aphelinidae from T. vaporariorum. This study, which is the first systematic survey of host plants in the region, intends to provide a better knowledge of the range of whiteflies host plants in Argentina.Las moscas blancas de importancia económica son polífagas y capaces de desarrollarse sobre numerosas plantas cultivadas y espontáneas. Registramos las especies de moscas blancas sobre cultivos hortícolas y de flores, y sobre las plantas silvestres asociadas. Observamos dos especies: Trialeurodes vaporariorum (Westwood y el complejo Bemisia tabaci (Gennadius. T. vaporariorum fue registrada sobre 24 especies de plantas (11 familias, 12 y 8 de las cuales son hospedantes nuevos para Argentina y a nivel mundial, respectivamente. El complejo B. tabaci fue registrado solo en sistemas de producción de flores, sobre 19 especies de plantas (11 familias, 14 y 7 de las cuales son nuevos hospedantes para

  2. Absconding and migratory behaviors of feral Africanized honey bee (Apis mellifera L. colonies in NE Brazil = Comportamentos de abandono e migração de colônias silvestres da abelha melífera africanizada (Apis mellifera L. no nordeste do Brasil

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    Breno Magalhães Freitas

    2007-10-01

    Full Text Available We investigated the annual movements of feral Africanized honey bee (Apis mellifera L. colonies in the state of Ceará, Brazil, aiming to understand seasonal variations in their population. Arrival and absconding of Africanized honey bee (AHB colonies in the semiaridmunicipality of Canindé and the coastal humid city of Fortaleza (120 km apart were recorded weekly from January 1999 to December 2001, and the data compared to rainfall records in both areas. Results showed that AHB colonies only nest in the semiarid during the rainy season and abscond during the dry season, the opposite from observations taken in Fortaleza. Only 5% of colonies remained in the semiarid area for the entire year due to ant (Camponotus sp. attacks and shortage of nectar and water during the dry season, with most colonies migrating to coastal areas where the weather is milder and many plant species bloom at that time of year. Excessive rainfallprobably pushes AHB colonies back to the semiarid during the rainy season. We concluded that absconding and migration are strategies that allow AHB colonies to survive in the semiarid NE of Brazil, contrary to European honeybees, which have never succeeded in establishing wild colonies in the region.Os movimentos de colônias silvestres da abelha melífera africanizada (Apis mellifera L. no Estado do Ceará, Brasil, foram investigados com o objetivo de compreender variações anuais em sua população. A chegada e a partida de colônias de abelhas africanizadas (AHB,no município semi-árido de Canindé e na úmida cidade litorânea de Fortaleza (separadas por 120 km, foram monitoradas semanalmente, de janeiro de 1999 a dezembro de 2001, e comparados com os dados pluviométricos de chuvas em ambas as áreas. Os resultadosdemonstraram que as abelhas africanizadas somente nidificaram no semi-árido durante a estação chuvosa e o abandonaram na estação seca, ao contrário do observado em Fortaleza. Apenas 5% das col

  3. Impactos de atropelamentos de animais silvestres no trecho da rodovia SP-215 confrontante ao Parque Estadual de Porto Ferreira – Porto Ferreira, SP (Nota Científica. Impacts roadkills mortality of wild animals in the area of SP-215 highway alongside Porto Ferreira State Park – Porto Ferreira, SP (Scientific Note.

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    Sonia Aparecida de SOUZA

    2010-12-01

    Full Text Available No presente trabalho foi realizado o monitoramento dos atropelamentos de animais silvestres na rodovia SP–215 no trecho confrontante ao Parque Estadual de Porto Ferreira. Em seis anos foram registrados 72 indivíduos, sendo 17 espécies de mamíferos, 10 de aves, quatro de répteis, uma de anfíbio e três indivíduos não identificados. Dentre esses, lobo-guará Chrysocyon brachyurus, jaguatirica Leopardus pardalis e cuíca-lanosa Caluromys lanatus se encontram na lista das espécies ameaçadas de extinção do Estado de São Paulo. A partir do conhecimento das espécies atingidas, faz-se necessário o desenvolvimento de estudos e propostas de implantação de medidas mitigadoras à presença da rodovia SP–215 para a conservação da fauna.This paper presents the data collected through the monitoring of roadkills on SP–215 highway in the area alongside Porto Ferreira State Park. During six years, 72 roadkills were recorded, including 17 species of mammals, 10 of birds, five of reptiles, one of amphibians and three unidentified individuals. Among those species, maned wolf Chrysocyon brachyurus, ocelot Leopardus pardalis, and Western woolly opossum Caluromys lanatus are included in the threatened species list of the state of São Paulo. After finding out which species are affected, it is necessary to develop studies and proposals for implementing effective mitigation measures for the presence of SP–215 highway in the area in order to preserve the local fauna.

  4. Phytochemical Evaluation of Wild and Cultivated Pepper (Capsicum annuum L. and C. pubescens Ruiz & Pav. from Oaxaca, Mexico Evaluación Fitoquímica en Chile (Capsicum annuum L. and C. pubescens Ruiz & Pav. Silvestre y Cultivado en Oaxaca, México

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    Araceli Minerva Vera-Guzmán

    2011-12-01

    Full Text Available Reports of the last decade show that some types of food and spices included in the human diet, such as pepper (Capsicum annuum L. can have a positive effect on human health. The Mexican pepper germplasm is poorly documented with regard to variety and the amount of phytochemical compounds that it contains. In the present study, the variation of phytochemical compounds was evaluated in nine fruit variants (morphotypes of wild and cultivated pepper grown in Oaxaca. ANOVA detected significant differences among pepper morphotypes and ripeness stages of fruits; vitamin C, total phenols, flavonoids, P-carotene, coordinated chromatic of color, and capsaicinoids. The highest values of vitamin C were found in 'Tabaquero', 'Guero' and 'Costeño' morphotypes (151.6 to 183.2 mg 100 g-1. With regard to total phenols and flavonoids, 'Piquín' and 'Solterito' had the highest levels. Coordinates of color a* and b*, and chroma presented a positive correlation with phenol and flavonoid contents. The evaluated morphotypes differed in capsaicin and dihydrocapsaicin; C. annuum had higher capsaicin content (4.9 to 142 /En la última década, se reportó que el consumo de ciertos alimentos y especias, como el chile (Capsicum annuum L., pueden tener un efecto positivo en la salud. Particularmente, los acervos genéticos mexicanos de chile están poco documentados en relación a la diversidad desde la perspectiva fitoquímica. En este trabajo se evaluó la variación de compuestos fitoquímicos en nueve morfotipos de chile silvestres y cultivados de Oaxaca. El ANDEVA detectó diferencias significativas entre morfotipos y estados de madurez en vitamina C, fenoles, flavonoides, P-caroteno, color, y capsaicinoides. Los valores más altos de vitamina C se determinaron en 'Tabaquero', 'Guero' y 'Costeño' (151.6 a 183.2 mg 100 g-1. En fenoles y flavonoides sobresalieron los tipos 'Piquin' y 'Solterito'. Las coordenadas cromáticas a* y b*, y los tonos (C* se correlacionaron

  5. Caracterización histológica e histoquímica de la médula ósea de la baba (Caiman crocodilus crocodilus en hábitat silvestre | Histological and histochemical characterization of bone marrow of spectacled caiman (Caiman crocodilus crocodilus in a wildlife

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    Eva Velásquez Bolívar

    2017-10-01

    Full Text Available Estudios en cocodrilos prometen una estrategia para desarrollar nuevos fármacos antimicrobianos y terapias inmunes en humanos. Se caracterizaron la histología e histoquímica de la médula ósea de la Baba Caiman crocodilus crocodilus en hábitat silvestre, en virtud de la importancia de esta como formadora de las series hematopoyéticas (serie roja, serie blanca y serie trombocítica. Se tomaron muestras de los huesos húmero y fémur para la descripción histológica de la médula ósea. Los cortes histológicos fueron teñidos con hematoxilina y eosina (H-E, tinción de Wilder y tinción tricrómica de Gomori. En la descripción morfológica de las series hematopoyéticas se empleó H-E y May-Grünwald-Giemsa; la histoquímica incluyó las tinciones ácido peryódico de Schiff (PAS y Sudán III. La médula ósea del húmero y fémur de la especie resultó ser un tejido conjuntivo hipercelular con irrigación abundante de vasos sanguíneos de pequeño calibre, con soporte de reticulina. El parénquima medular está constituido por las series hematopoyéticas; las células rojas maduran en islotes eritroblásticos. La granulopoyesis es un proceso ordenado y la serie linfoide madura en la médula ósea, siguiendo un proceso de diferenciación, en: linfoblastos, prolinfocitos y linfocitos maduros. Se evidenció un proceso denominado trombopoyesis, sin que se observaran megacarioblastos ni plaquetas. La tinción del PAS, identificó glucógeno con intensa positividad en el citoplasma de heterófilos en todos sus grados de maduración. Los eosinófilos mostraron una débil positividad, permitiendo la diferenciación de estos dos tipos celulares. La serie linfoide fue débilmente positiva a la tinción Sudán III, en todos sus grados de maduración.

  6. Peumus boldus (Monimiaceae, Magnoliopsida) una especie silvestre promisoria de Chile

    OpenAIRE

    San Martín Acebedo, José; Doll, Ursula

    1998-01-01

    Se organiza y sintetiza la información relacionada con la botánica, ecología y el contenido químico de extraíbles de hojas, corteza y madera de Peumus boldus (Monimiaceae, Magnoliopsida), árbol siempreverde, autóctono, endémico y termófilo de los bosques y matorrales esclerófilos naturales del área mediterránea de Chile. La popularidad y conocimiento de la especie tiene arraigo en la medicina popular empírica, dado el efecto farmacológico atribuible fundamentalmente, al alcaloide boldina, pre...

  7. Distribución geográfica del riesgo de rabia de origen silvestre y evaluación de los factores asociados con su incidencia en Colombia, 1982-2010 Geographic distribution of wild rabies risk and evaluation of the factors associated with its incidence in Colombia, 1982-2010

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    Diana Marcela Brito-Hoyos

    2013-01-01

    Full Text Available OBJETIVO: Actualizar la información sobre la distribución geográfica de los focos de rabia transmitida por quirópteros en Colombia y evaluar las condiciones bióticas y abióticas asociadas con la incidencia de esta enfermedad en el país. MÉTODOS: Estudio observacional a partir de una base de datos construida con la información de los focos de rabia silvestre detectados entre 1982 y 2010 y la población bovina de cada municipio. Se clasificaron los municipios según el riesgo de transmisión de la enfermedad y se realizó una caracterización ambiental de 15 variables. Se elaboró un modelo de máxima entropía para predecir las zonas con condiciones apropiadas para la presencia del vector Desmodus rotundus infectado por el virus y evaluar la importancia de las variables empleadas. RESULTADOS: Se presentaron 2 330 focos en 359 (31,8% de los 1 128 municipios del país; 144 municipios se clasificaron como de alto riesgo. Montería, Valledupar, Riohacha, Aguachica, Unguía, Acandí, Río de Oro, Tibú, Sahagún y San Onofre concentraron las mayores tasas de incidencia. Los focos de rabia se presentaron a lo largo de todo el año, aunque en los meses secos (de enero a abril se observó una mayor frecuencia (correlación lineal [r] = 0,64. La temperatura y las precipitaciones son las variables que más robustez aportaron al modelo de predicción. CONCLUSIONES: Se recomienda aplicar medidas de control y prevención en los municipios con alto riesgo. Los mejores meses para realizar jornadas de vacunación son junio, noviembre y diciembre. En futuros análisis se deben incluir variables de interacción biótica para mejorar la capacidad predictiva del modelo.OBJECTIVE: To update the information on the geographic distribution of bat-transmitted rabies foci in Colombia and evaluate the biotic and abiotic conditions associated with the incidence of this disease in the country. METHODS: Observational study of a database containing information on the

  8. Molecular diversity among domestic guinea-pigs (Cavia porcellus and their close phylogenetic relationship with the Andean wild species Cavia tschudii Diversidad molecular entre cuyes domésticos (Cavia porcellus y su relación filogenética cercana con la especie silvestre andina Cavia tschudii

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    ÁNGEL E SPOTORNO

    2004-06-01

    Full Text Available To investigate the origin and diversity of domestic guinea-pigs Cavia porcellus (Linnaeus, 1758; Rodentia, Caviidae, we sequenced the mitochondrial cytochrome b gene of 12 domestic and 10 wild specimens from six species, including the two presumed as ancestral to the domestic one: Cavia tschudii and Cavia aperea. All maximum parsimony and maximum likelihood analyses grouped C. porcellus with C. tschudii (mean K2P distance = 3.2 %; best trees had 609 steps (CI = 0.796; Bremer support Index (SI = 28, and a _Ln = 4419.52, with 100 % and 97 % bootstrap support respectively. This clade, supported by three substitutions and 96 % bootstrap, is also obtained in the cladistic analysis of corresponding amino acids. When the C. aperea node was forced to join C. porcellus, these trees were consistently longer, less likely and robust, and with less defining characters than the optimal one. All C. porcellus sequences also clustered in a node defined by 15 substitutions. The sub-node containing animals from city markets, pet shops and laboratories was characterized by four substitutions (one non-silent, SI = 7, and 91 % bootstrap. Some South American C. porcellus, called "criollos" (creoles by local breeders, were more diverse. Probably, a particular clade from southern Peru and Chile may represent a pre-Columbian lineage. Mean K2P distance between C. tschudii and C. aperea was rather large, 7.7 %. Cavia appeared as a robust node (100 % bootstrap. These results indicate that C. tschudii is the species most closely related to C. porcellusPara investigar el origen y la divergencia de los cuyes domésticos Cavia porcellus (Linnaeus, 1758; Rodentia, Caviidae, secuenciamos el gen mitocondrial para citocromo b de 12 especímenes domésticos y 10 silvestres de seis especies, incluyendo las dos que se presumen como ancestro de la doméstica: C. tschudii y C. aperea. Todos los análisis de máxima parsimonia y máxima verosimilitud agruparon a C. porcellus con C

  9. Diversidad y aspectos biológicos de abejas silvestres de un ambiente urbano y otro natural de la región central de Santa Fe, Argentina Diversity and biological aspects of wild bees in an urban and a natural environment in the central region of Santa Fe, Argentina

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    Milagros Dalmazzo

    2010-06-01

    Full Text Available El objetivo del presente trabajo fue relevar el elenco de abejas silvestres en la región central de Santa Fe y comparar la diversidad de especies y aspectos biológicos en dos ambientes de una misma región. Las abejas fueron colectadas en el estrato herbáceo de la Reserva Universitaria "Escuela Granja" de la localidad Esperanza, y en la zona urbana de la localidad Susana, ambas ubicadas dentro de la Provincia Fitogeográfica del Espinal. La colecta se realizó en octubre, noviembre y diciembre de 2004 y en enero, febrero y marzo de 2005, registrando las especies vegetales sobre las que se capturaron. Se colectaron 277 ejemplares en total, de los cuales se identificaron 62 especies (27 géneros en 5 familias. Las curvas de rarefacción indican una tasa de acumulación de especies mayor para la Reserva Ecológica, los índices de diversidad de Shannon son 3,25 para la Reserva Ecológica y 2,64 para la Zona Urbana. Para la comparación de las comunidades en ambos sitios, las abejas fueron clasificadas en tres categorías según la especialización en el uso del recurso floral, sustrato de nidificación y comportamiento social. Se observó una asociación entre los grupos especialistas y de nidificación en el suelo con el ambiente natural, y por otro lado, las especies generalistas y de nidificación en cavidades con el ambiente urbano. No se identificaron diferencias, en cuanto a la sociabilidad de las especies, entre ambos sitios.The purpose of this contribution is to present a survey of wild bees in the central region of Santa Fe, and to compare the diversity and biological aspects of the bee communities at two different environments of the same region. Bees were surveyed at the ecological reserve Reserva Universitaria "Escuela Granja" in the locality of Esperanza, and at an urban area in the locality of Susana, both in the Espinal Phytogeographic Province. Bees were sampled from October to December 2004 and from January to March 2005

  10. Evaluación de poblaciones segregantes producidas a partir de cruzamientos entre tomate cultivado y la accesión silvestre PI134418 de Solanum habrochaites var. glabratum resistente al pasador del fruto. Evaluation of segregating populations from crosses between cultivated tomato and PI134418 wild accession of Solanum habrochaites var. glabratum with resistance to the fruit borer.

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    Edwin F. Restrepo S.

    2008-01-01

    Full Text Available Se realizó la evaluación de poblaciones segregantes producidas a partir de cruzamientos entre tomate S. lycopersicum L. cv. maravilla y la accesión silvestre PI134418 de S. habrochaites var. glabratum resistente al pasador del fruto N. elegantalis. Se encontró que hay dominancia de los alelos que disminuyen la expresión del caraacute;cter peso promedio de fruto. El método del retrocruzamiento resultó maacute;s eficiente que el de la autofecundación, para contrarrestar la dominancia de los alelos que codifican por el tamaño pequeño del fruto. Los tricomas y el número promedio de frutos por racimo no ejercieron ningún efecto sobre el ataque de los frutos por parte del pasador; mientras que el peso promedio de fruto sí tuvo efecto importante sobre dicho ataque, de tal manera que el insecto tiende a producir mayor daño a medida que se incrementa el peso promedio de fruto. Las poblaciones RC1 y RC2 se comportaron como las típicas segregantes para los caracteres evaluados y exhibieron amplia variabilidad en los mismos. El método del retrocruzamiento fue efectivo para romper la asociación negativa entre el peso promedio de fruto y la resistencia al insecto. El peso promedio de algunos de los frutos en los recombinantes RC2 fluctuó entre 45.1 y 68.6 g y mostraron resistencia al pasador.Evaluation of segregating populations from crosses between cultivated tomato S. lycopersicum L. cv. maravilla and PI134418 wild accession of Solanum habrochaites var. glabratum with resistance to the fruit borer N. elegantalis was made. There was dominance of alleles that decrease the expression of the character mean fruit weight. The backcrossing method was more efficient than selfing in order to counteract the dominance of alleles that encode by small fruit size. The thrichomes and the mean number of fruit per bunch did not produce any effect on the fruit attack by the fruit borer; while that mean fruit weight had important effect on this attack

  11. Variabilidade genética de acessos obtidos de populações cultivadas e silvestres de maracujazeiro-doce com base em marcadores rapd Genetic diversity obtained from cultivated population and native accesses of seewt passion fruit based on rapd markers

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    Graciele Bellon

    2009-03-01

    Full Text Available O maracujazeiro-doce (Passiflora alata Curtis, devido a preços diferenciados, vem ganhando importância dentro do mercado de frutas in natura. O melhoramento genético é fundamental para elevar a qualidade e a produtividade da cultura. Os marcadores moleculares do DNA têm sido muito úteis por permitirem a obtenção de um número praticamente ilimitado de polimorfismo genético sem influência do ambiente. Objetivou-se, neste trabalho, estudar a variabilidade genética de 17 acessos de maracujá-doce, com base em marcadores moleculares RAPD. Um acesso de P. quadrangularis e um de P. edulis foram utilizados como outgroups. Amostras de DNA genômico de cada acesso foram extraídas e 11 iniciadores decâmeros (OPD 04; 07; 08 e16; OPE 18 e 20; OPF 01 e 14; OPG 08; OPH 12 e 16 foram utilizados para a obtenção dos marcadores. Os marcadores obtidos foram convertidos em uma matriz de dados binários, a partir da qual foram estimadas as distâncias genéticas entre os acessos e realizadas análises de agrupamento e de dispersão gráfica. Do total de marcadores, considerando-se apenas os acessos de P. alata, observaram-se 87 (62,12% bandas polimórficas, evidenciando a grande variabilidade intraespecífica. A análise de agrupamento realizada com base nas distâncias genéticas permitiu subdividir os 17 acessos de P. alata em, pelo menos, cinco grupos de similaridade genética. Os acessos silvestres foram os que mais contribuíram para a ampliação da base genética dos materiais estudados, abrindo perspectivas para o uso desses materiais em programas de melhoramento.Sweet passion fruit (Passiflora alata Curtis is gaining importance in the in natura fruit market due to differential value. Genetic breeding is crucial to improve crop quality and productivity. Molecular markers of DNA have been very useful by allowing obtaining a virtually unlimited number of genetic polymorphism without environment influence. This work's objective was to study the

  12. Roadkill of wild vertebrates along the GO-060 road between Goiânia and Iporá, Goiás State, Brazil = Atropelamento de vertebrados silvestres na rodovia GO-060 entre Goiânia e Iporá Estado de Goiás, Brasil

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    Hélida Ferreira da Cunha

    2010-07-01

    Full Text Available Roadkill of wild vertebrates along GO-060, Brazil. Roads represent an old and constant cause of accidental death of wildlife. From May 2004 to November 2005, we recorded the roadkills of vertebrates in the GO-060 road between Goiânia and Iporá. For each road-killed animal we wrote down the species and location along the road. We found 308 animals roadkilled from at least 25 vertebrate species: 86% mammals, 11% birds and 3% reptiles. Tamandua tetradactyla, Cerdocyon thous and Myrmecophaga tridactyla were, in decreasing order, the species withthe largest number of road-killed individuals. Among mammals, the number of road-killed individuals was not related to species weight. The number of species and road-killed animals was constant throughout the 17 months of the research. The average frequency of animal roadkills in the dry season (April to September is slightly higher than the frequency in the rainy season (October to March. The average frequency of species victim to accidents, however, is constantthroughout the dry and rainy seasons. The incidence of species and individuals of road-killed animals per 10 km was not influenced by the number of forest fragments along the sides of the road. We suggest that speed reducers could decrease the number of animals killed on the road. As rodovias representam uma antiga e constante causa de mortalidade acidental da fauna silvestre. Entre maio/2004 e novembro/2005, registramos os vertebrados atropelados às margens da rodovia GO-060, entre Goiânia e Iporá. Para cada animal atropelado anotamos a espécie e a localização ao longo da estrada. Foram registrados 308 animaisatropelados de pelo menos 25 espécies de vertebrados: 86% de mamíferos, 11% de aves e 3% de répteis. Tamandua tetradactyla, Cerdocyon thous e Myrmecophaga tridactyla foram em ordem decrescente as espécies com maior número de indivíduos atropelados. Entre os mamíferos, o número de animais atropelados não esteve relacionado a

  13. Comportamentos de abandono e migração de colônias silvestres da abelha melífera africanizada (Apis mellifera L. - DOI: 10.4025/actascibiolsci.v29i4.882 Absconding and migratory behaviors of feral Africanized honey bee (Apis mellifera L. colonies in NE Brazil - DOI: 10.4025/actascibiolsci.v29i4.882

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    Raimundo Maciel Souza

    2008-02-01

    Full Text Available Os movimentos de colônias silvestres da abelha melífera africanizada (Apis mellifera L. no Estado do Ceará, Brasil, foram investigados com o objetivo de compreender variações anuais em sua população. A chegada e a partida de colônias de abelhas africanizadas (AHB, no município semi-árido de Canindé e na úmida cidade litorânea de Fortaleza (separadas por 120 km, foram monitoradas semanalmente, de janeiro de 1999 a dezembro de 2001, e comparados com os dados pluviométricos de chuvas em ambas as áreas. Os resultados demonstraram que as abelhas africanizadas somente nidificaram no semi-árido durante a estação chuvosa e o abandonaram na estação seca, ao contrário do observado em Fortaleza. Apenas 5% das colônias permaneceram na área semi-árida por todo o ano, por causa dos ataques de formigas (Camponotus sp. e carência de néctar e água na estação seca. A maioria das colônias migrou para as áreas litorâneas onde o clima é mais ameno e muitas espécies vegetais florescem nesta época do ano. O excesso de chuvas provavelmente forçava as colônias africanizadas a migrarem de volta ao semi-árido durante a estação chuvosa. Conclui-se que o abandono e a migração são estratégias que permitem às abelhas africanizadas sobreviverem no semi-árido nordestino, em contraste com as raças européias que nunca conseguiram estabelecer populações silvestres na região.We investigated the annual movements of feral Africanized honey bee (Apis melliferaL. colonies in the state of Ceará, Brazil, aiming to understand seasonal variations in their population. Arrival and absconding of Africanized honey bee (AHB colonies in the semiarid municipality of Canindé and the coastal humid city of Fortaleza (120 km apart were recorded weekly from January 1999 to December 2001, and the data compared to rainfall records in both areas. Results showed that AHB colonies only nest in the semiarid during the rainy season and abscond during the

  14. OPTIMIZACIÓN DEL RENDIMIENTO Y CONTENIDO DE TIMOL DE ACEITE ESENCIAL DE ORÉGANO SILVESTRE OBTENIDO POR ARRASTRE CON VAPOR OPTIMIZAÇÃO DO RENDIMENTO E CONTEÚDO DE TIMOL DO ÓLEO ESSENCIAL DO ORÉGANO SELVAGEM OBTIDO POR ARRASTRE À VAPOR OPTIMIZATION OF YIELD AND THYMOL CONTENT OF WILD OREGANO ESSENTIAL OIL OBTAINED BY STEAM DISTILLATION PROCESS

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    OSCAR ARANGO B

    2012-12-01

    Full Text Available Se estudió el proceso de extracción por arrastre con vapor a escala de planta piloto del aceite esencial de orégano silvestre (Lippia origanoides H.B.K de la región del Alto Patía (Colombia utilizando la metodología de superficie de respuesta. Los factores estudiados fueron el tiempo de extracción (1-3 horas, la densidad del lecho (60-100 g/L y la presión de extracción (1-3 psi. Las variables de respuesta fueron el rendimiento de extracción y el contenido de timol del aceite esencial. La composición de los aceites esenciales fue determinada mediante cromatografía de gases. Con respecto al rendimiento se obtuvo que solamente la densidad del lecho presentó un efecto estadísticamente significativo (PO processo de extração do óleo essencial de orégano silvestre (Lippia origanoides H.B.K por arraste a vapor foi estudado a escala piloto na região do Alto Patía (Colômbia, utilizando a metodologia de superfície resposta. Os fatores estudados foram o tempo de extração (1-3 horas, a densidade do leito (60-100 g/L e a pressão de extração (1-3 psi. As variáveis de resposta foram: o rendimento da extração e o conteúdo de timol do óleo essencial. A composição dos óleos essenciais foi determinada mediante cromatografia de gases. Com respeito ao rendimento, foi obtido que somente a densidade do leito apresentou um efeito estatisticamente significativo (PThe extraction process by steam distillation on pilot plant of essential oil from wild oregano (Lippia origanoides H.B.K from Alto Patía region (Colombia was studied using surface response methodology. Factors studied were the extraction time (1-3 hours, the density of the bed (60-100 g/L and the extraction pressure (1-3 psi. The response variables were the extraction yield and the content of thymol in the essential oil. The composition of essential oils was determined by gas chromatography. Regarding yield only the bed density presented a statistically significant effect (P

  15. Impact of metal pollution and Thlaspi caerulescens growth on soil microbial communities

    NARCIS (Netherlands)

    Epelde, L.; Becerril, J.M.; Kowalchuk, G.A.; Deng, Y.; Zhou, J.N.; Garbisu, C.

    2010-01-01

    Soil microorganisms drive critical functions in plant-soil systems. As such, various microbial properties have been proposed as indicators of soil functioning, making them potentially useful in evaluating the recovery of polluted soils via phytoremediation strategies. To evaluate microbial responses

  16. Functional analysis of zinc hyperaccumulation related genes of Noccaea (Thlaspi) caerulescens for phytoremediation purposes

    NARCIS (Netherlands)

    Hassan, Z.

    2013-01-01

    Zinc (Zn) and cadmium (Cd) are toxic metals that can cause serious soil contamination when present in excess. Especially Cd exposure is a threat to human health. Plants can potentially be used to clean-up the Zn- and/or Cd-contaminated soils in a technology called “Phytoremediation”. Two major

  17. Impact of metal pollution and Thlaspi caerulescens growth on soil microbial communities.

    NARCIS (Netherlands)

    Epelde, L.; Becerril, J.M.; Kowalchuk, G.A.; Deng, Y.; Zhou, J.; Garbisu, C.

    2010-01-01

    been proposed as indicators of soil functioning, making them potentially useful in evaluating the recovery of polluted soils via phytoremediation strategies. To evaluate microbial responses to metal phytoextraction using hyperaccumulators, a microcosm experiment was carried out to study the impacts

  18. Isolation and identification of 4-a-rhamnosyloxy benzyl glucosinolate in Noccaea caerulescens showing intraspecific variation

    NARCIS (Netherlands)

    Graaf, de R.M.; Krosse, S.; Swolfs, A.E.M.; Brinke, te E.; Prill, N.; Leimu, R.; Galen, van P.M.; Wang, Y.; Aarts, M.G.M.; Dam, van N.M.

    2015-01-01

    Glucosinolates are secondary plant compounds typically found in members of the Brassicaceae and a few other plant families. Usually each plant species contains a specific subset of the ~130 different glucosinolates identified to date. However, intraspecific variation in glucosinolate profiles is

  19. Protein Biochemistry and Expression Regulation of Cadmium/Zinc Pumping ATPases in the Hyperaccumulator Plants Arabidopsis halleri and Noccaea caerulescens

    Czech Academy of Sciences Publication Activity Database

    Mishra, S.; Mishra, Archana; Küpper, Hendrik

    2017-01-01

    Roč. 8, May 22 (2017), č. článku 835. ISSN 1664-462X R&D Projects: GA MŠk EF15_003/0000336 Institutional support: RVO:60077344 Keywords : cellular compartmentation * zinc homeostasis * cadmium * metal hyperaccumulator plants Subject RIV: CE - Biochemistry OBOR OECD: Biochemistry and molecular biology Impact factor: 4.298, year: 2016

  20. Enterobacterias en tortugas silvestres y cautivas del Amazonas, Podocnemis expansa (Testudines: Podocnemididae)

    OpenAIRE

    Meyer Junior, Júlio Cesar; Marinho, Márcia; Táparo, Cilene Vidovix; Costa, João Bosco da; Dias, Hilma Lúcia Tavares

    2015-01-01

    ResumenLa tortuga amazónica Podocnemis expansa Schweigger, 1812 es un recurso muy importante para las poblaciones ribereñas de fauna de la región amazónica, además de ser una de las principales especies enumeradas para la producción en cautiverio. El consumo de esta especie como alimento en la región ha generado una demanda de estudios sobre salud animal y sus posibles impactos en la salud pública. El objetivo principal de este estudio fue evaluar la microbiota gastrointestinal de las tortuga...

  1. PRIMER REGISTRO DE EPIBIONTES EN EJEMPLARES JUVENILES DE CROCODYLUS ACUTUS EN EL MEDIO SILVESTRE

    Directory of Open Access Journals (Sweden)

    CUPUL-MAGAÑA FABIO GERMÁN

    2005-06-01

    Full Text Available Se registra por vez primera la presencia de cuatro géneros de diatomeas (Amphora, Cymbella, Navicula y Nitzschia, un alga azul-verde del género Trichodesmium y colonias de protozoarios ciliados del género Epistylis, como epibiontes de cocodrilos de río juveniles (Crocodylus acutus. Los epibiontes se encontraron en la región ventral del cuerpo de cocodrilos juveniles, menores de 75 cm de largo, capturados en el estero Boca Negra, Jalisco, México.

  2. Propagación de especies herbáceas silvestres con potencial para paisajismo

    OpenAIRE

    García-Albarado, J. Cruz; Gómez-Merino, Fernando Carlos; Trejo-Téllez, Libia Iris; Sandoval Pérez, Isauro Alfonso; Morales Ramos, Victorino

    2013-01-01

    En esta investigación se evaluó la propagación sexual (por semillas) y asexual (por esquejes) de Ruellia nudiflora, Centratherum punctatum y Salvia coccinea, en diferentes combinaciones de sustratos a base lombricomposta, turba, arena y vermiculita. Los volúmenes de lombricomposta y turba variaron de 50 a 100% (v/v), mientras que los de arena y vermiculita lo hicieron de 0 a 50% (v/v). En cuanto a semillas, la especie que respondió de manera más eficiente a los tratamientos fue S. coccinea, l...

  3. Usos potenciales de germoplasma animal masculino con fines de preservación de fauna silvestre

    OpenAIRE

    Francisco Cabrera; Andrés Caicedo; Pedro M. Aponte

    2017-01-01

    El germoplasma animal comprende células o tejidos que pueden generar nuevos individuos. Su preservación y uso puede instrumentarse en la reproducción de animales en peligro de extinción. El germoplasma animal, además de los gametos, incluye células diploides como las células madre, potencialmente capaces de dividirse indefinidamente. Las células madre espermatogoniales (CMEs) generan los espermatozoides en el testículo (espermatogénesis). Las CME ofrecen múltiples opciones biotecnológicas....

  4. Genetic identification of new alien pest species Illinoia liriodendri and its parasitoid Areopraon silvestre in Croatia

    OpenAIRE

    Franjević, Milivoj; Glavaš, Milan; Hrašovec, Boris; Koletić, Nikola; Franjević, Damjan

    2016-01-01

    Background and Purpose: During June 2015 in Zagreb city area (Croatia) samples of tulip tree (Liriodendron tulipifera) leaves were collected with symptoms of attack by some unknown aphid. Material and methods: Aphids were collected form leaves of tulip trees on different locations in Zagreb during July 2015. Total genomic DNA was extracted from ethanol-preserved specimens. PCR analysis was carried out and PCR products were purified from 1% agarose gel for sequencing purposes. The obtaine...

  5. COMPOSICIÓN ELEMENTAL DE ALGUNAS ESPECIES DE PLANTAS SILVESTRES MEXICANAS

    Directory of Open Access Journals (Sweden)

    J. C. Raya Pérez

    2009-01-01

    Full Text Available El conocer la composición elemental de las plantas puede ser útil desde varios puntos de vista, como el saber sus necesidades nutricionales y tener una idea del tipo de mantillo que se podría formar en un momento dado. En el caso específico del silicio, las plantas que lo acumulan pueden formar fitolitos, muy útiles en paleoecología y arqueología. Se recolectaron especies de plantas de varias partes del centro-occidente de México y se determinó su composición elemental mediante sonda dispersiva de rayos X acoplada a un microscopio electrónico de barrido. Las plantas semiparásitas (plantas que fotosintetizan pero que toman sus nutrientes de la planta que parasitan acumulan cantidades considerables de iones como potasio y cloro para usarlos como osmolitos. Tillandsia recurvata, a pesar de ser epífita, acumula una buena cantidad de silicio, lo mismo que Cyperus sp., registrada como acumuladora de este elemento. Otras especies como Tagetes micrantha, de uso en la cocina mexicana, podrían contribuir en alguna medida al aporte de micronutrientes como potasio y magnesio.

  6. 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...

  7. The importance of maintaining carnivores in wildlands (La Importancia de mantener carnivoros en Areas silvestres)

    Science.gov (United States)

    Dave Foreman

    2006-01-01

    I'd like to talk a little bit about another important disturbance regime in much of the western United States and Mexico. We've talked some about the importance of fire. Another one is the importance of natural hydrological cycles. But an often-overlooked important ecological disturbance regime is predation. Research around the world and in many habitats has...

  8. 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 ...

  9. De la vida silvestre a la colonización mecanizada en el Caribe colombiano

    Directory of Open Access Journals (Sweden)

    Mario Mejía Gutiérrez

    1990-01-01

    Full Text Available En el período 1958 - 1975 el autor residió durante catorce años en diversas localidades del Caribe Colombiano, desempeñando diferentes labores, particularmente en los terrenos de la investigación agropecuaria y pesquera. Así, las páginas siguientes son resumen de una voluminosa información recogida por el autor como primer director de investigaciones del Instituto de Fomento Algodonero en Codazzi, donde construyó la Estación Experimental La Europa; como uno de los creadores del Departamento de Economía Agropecuaria y Pesquera de la C V M en Barranquilla; como Asesor del Departamento Técnico de la Corporación Financiera del Norte en Barranquilla; como primer director colombiano por INDERENA del Instituto Colombiano-Alemán de Investigaciones de Punta Betín en Santa Marta; como promotor-fundador de la Facultad de Ingeniería Pesquera en la Universidad Tecnológica del Magdalena; como Director de los Parques Salamanca y Tayrona; como Jefe de Exportación de Fauna en Inderena, Barranquilla.. .

  10. Propagación y crecimiento inicial del abarco (Cariniana pyriformis Miers, utilizando semillas silvestres

    Directory of Open Access Journals (Sweden)

    Harlenson Pinilla Cespedes

    2016-12-01

    Full Text Available Se realizó la propagación de la especie forestal Abarco Cariniana Pyriformis Miers, con el objetivo de analizar su comportamiento en vivero utilizando semillas botánicas no mejoradas. Se utilizó un diseño completamente aleatorio con arreglo factorial compuesto por 10 factores por condición lumínica -luz y sombra- y 45 unidades experimentales. Se utilizaron diferentes combinaciones de sustratos orgánicos. Las semillas fueron sometidas a un tratamiento pre-germinativo en presencia de un testigo. Las variables evaluadas fueron porcentaje de germinación, crecimiento en altura y diámetro y porcentaje de supervivencia. La especie comenzó la germinación 13 días después de la siembra y se extendió hasta el día 27. Los resultados del proceso de germinación fueron de 60 % y 40% a plena exposición solar y bajo malla poli-sombra, respectivamente. El crecimiento en altura de las plántulas muestra al factor CF con el mejor valor 28,94 cm, bajo condiciones de luz y el factor EF, con 25,56 cm a plena exposición de sombra. Mientras el incremento en diámetro los factores DF y EF registraron valores de 1,04 cm y 0,84 cm, bajo las condiciones sol y sombra respetivamente. Las semillas de esta especie son no-fotoblásticas, es decir que para su germinación es indiferente la presencia o ausencia de luz. Las plántulas ubicadas en la condición ambiental sol registraron mejores valores promedios en las variables diámetro y altura. Por tanto, esta condición ejerce efecto positivo para el crecimiento inicial de las plántulas de Abarco C. pyriformis. 

  11. Caracterización química y propiedades bioactivas de hongos silvestres portugeses comestibles

    OpenAIRE

    Barros, Lillian Bouçada de

    2008-01-01

    Nineteen different mushroom species (Agaricus arvensis, Agaricus bisporus, Agaricusromagnesii, Agaricus silvaticus, Agaricus silvicola, Cantharellus cibarius, Hypholomafasciculare, Lactarius deliciosus, Lactarius piperatus, Lepista nuda, Leucopaxillusgiganteus, Lycoperdon molle, Lycoperdon perlatum, Macrolepiota mastoidea,Macrolepiota procera, Ramaria botrytis, Sarcodon imbricatus, Tricholoma acerbum and Tricholoma portentosum) from Northeast of Portugal, one of the European regions with high...

  12. 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

  13. Pesquisa de anticorpos contra Leptospira spp. em animais silvestres e em estado feral da região de Nhecolândia, Mato Grosso do Sul, Brasil: utilização da técnica de imuno-histoquímica para detecção do agente Investigation of antibodies to Leptospira spp. in wild and feral animals from the region of Nhecolândia, Mato Grosso do Sul, Brazil: use of the immunohistochemistry technique for the agent detection

    Directory of Open Access Journals (Sweden)

    Raul José Silva Girio

    2004-02-01

    Full Text Available Foram examinadas 315 amostras de soros sangüíneos de diversas espécies de animais que vivem em estado feral ou silvestre na região de Nhecolândia, Corumbá, MS, por meio da prova de soroaglutinação microscópica para leptospirose. Dessas amostras, 67 foram de bois baguás (Bos taurus indicus, 39 de porcos-monteiros (Sus scrofa, 39 de búfalos (Bubalus bubalis, nove de quatis (Nasua nasua, 41 de veados-campeiros (Ozotoceros bezoarticus, 10 de veados-mateiros (Mazama americana e 110 amostras de ovinos (Ovis aries. Em 12 animais que vieram a óbito, seis porcos-monteiros, quatro veados-campeiros e dois ovinos, foram realizadas tentativas de isolamento de Leptospira do fígado e dos rins por cultura em meio semi-sólido. Fragmentos desses órgãos foram submetidos a exame histopatológico e também a exame para detecção das Leptospiras pela técnica de imuno-histoquímica. Os resultados dos exames sorológicos mostraram que 64 (20,3% das amostras foram reagentes para, pelo menos, um sorovar de Leptospira patogênica; foram reagentes 41,0% das amostras de búfalos, 40,3% das de bois baguás, 17,9% das de porcos-monteiros, 9% das de ovinos e 9,7% das amostras de veados-campeiros; nenhuma das amostras de veados-mateiros e de quatis foi reagente. Os sorovares mais freqüentes foram: pomona, para búfalos e ovinos; icterohaemorrhagiae, para ovinos, veados-campeiros e suínos; e copenhageni, para veados-campeiros e suínos. As tentativas de isolamento dos rins e fígados foram todas negativas, e pela técnica da imuno-histoquímica foi detectada Leptospira no fígado de um porco-monteiro. As principais alterações estruturais, encontradas nos rins de dois veados-campeiros e de um porco-monteiro, foram infiltrado inflamatório intersticial com congestão associada a hemorragias.Three hundred and fifteen serum samples of several animal species living in wild or in feral state in the area of Nhecolândia, Corumbá, MS, Brazil, were examined by the

  14. Large expression differences in genes for iron and zinc homeostasis, stress response, and lignin biosynthesis distinguish roots of Arabidopsis thaliana and the related metal hyperaccumulator Thlaspi caerulescens

    NARCIS (Netherlands)

    van de Mortel, Judith E.; Almar Villanueva, Laia; Schat, Henk; Kwekkeboom, Jeroen; Coughlan, Sean; Moerland, Perry D.; Ver Loren van Themaat, Emiel; Koornneef, Maarten; Aarts, Mark G. M.

    2006-01-01

    The micronutrient zinc has an essential role in physiological and metabolic processes in plants as a cofactor or structural element in 300 catalytic and noncatalytic proteins, but it is very toxic when available in elevated amounts. Plants tightly regulate their internal zinc concentrations in a

  15. Large Expression Differences in Genes for Iron and Zinc Homeostasis, Stress Response, and Lignin Biosynthesis Distinguish Roots of Arabidopsis thaliana and the Related Metal Hyperaccumulator Thlaspi caerulescens.

    NARCIS (Netherlands)

    Mortel, van de J.E.; Almar Villanueva, L.; Schat, H.; Kwekkeboom, J.; Coughlan, S.; Moerland, P.D.; Verloren van Themaat, E.; Koornneef, M.; Aarts, M.G.M.

    2006-01-01

    The micronutrient zinc has an essential role in physiological and metabolic processes in plants as a cofactor or structural element in 300 catalytic and noncatalytic proteins, but it is very toxic when available in elevated amounts. Plants tightly regulate their internal zinc concentrations in a

  16. Large expression differences in genes for iron and zinc homeostasis, stress response, and lignin biosynthesis distinguish roots of Arabidoposis thaliana and the related metal hyperaccumulator Thlaspi caerulescens.

    NARCIS (Netherlands)

    van de Mortel, J.E.; Villanueva, L.A.; Schat, H.; Kwekkeboom, J.; Coughlan, S.; Moerland, P.D.; van Themaat, E.V.L.; Koornneef, M.; Aarts, M.G.M.

    2006-01-01

    The micronutrient zinc has an essential role in physiological and metabolic processes in plants as a cofactor or structural element in 300 catalytic and noncatalytic proteins, but it is very toxic when available in elevated amounts. Plants tightly regulate their internal zinc concentrations in a

  17. Concentración de Diclorodifeniltricloroetano (DDT) en poblaciones silvestres de Cocodrilos (Crocodylus acutus y C. Moreletti) en la zona Costera de México

    OpenAIRE

    Loa Loza, Eleazar

    2012-01-01

    Para determinar la concentración de DDT y sus metabolitos en ejemplares de cocodrilos (Crocodylus acutus y C. moreletii), durante el período de junio a diciembre de 2004 se tomaron 80 muestras de sangre en 37 localidades de 13 estados de la zona costera de México. En algunos de estos sitios, ha sido aplicado el DDT para el control del vector del paludismo. Las muestras fueron procesadas en el laboratorio mediante cromatografía de gases con detector de captura de electrones. Se realizó un anál...

  18. Estudo sobre triatomíneos e reservatórios silvestres de Trypanosoma cruzi no estado do Paraná, Sul do Brasil. Resultados preliminares

    Directory of Open Access Journals (Sweden)

    Toledo Max Jean de Ornelas

    1997-01-01

    Full Text Available Em localidades da zona rural de cinco municípios da região noroeste do Paraná adultos e ninfas de Triatoma sordida foram capturados em 21 (41,2% de 51 unidades domiciliares pesquisadas. Foram capturados 154 exemplares de T. sordida e 2 Panstrongylus megistus. De 135 exemplares examinados 58 (43,0% apresentavam o Trypanosoma tipo cruzi. Constatou-se também a infecção em 57,1% (4/7 dos gambás (Didelphis sp examinados. O peridomicílio apresentou-se mais infestado que o intradomicílio, sendo a casa de madeira abandonada a construção mais freqüente (34,7% do total investigado e com maior taxa de infestação (53,9%. Os dados mostram um elevado índice de infestação da zona rural por espécies secundárias de triatomíneos com altas taxas de infecção por flagelados do tipo T. cruzi, em uma área endêmica para a doença de Chagas já em fase de vigilância epidemiológica.

  19. Evaluación de medios de cultivo para propagación in vitro de semillas y explantes de especies silvestres de Solanum

    Directory of Open Access Journals (Sweden)

    Danita Andrade Díaz

    2013-01-01

    Full Text Available Se evaluaron los medios de cultivo Hussey-Stacey (A, Hendrix et al. (H, Atkinson et al. (AT y mitad de Murashyge y Skoog (½MS para la propagación in vitro de semillas y explantes de Solanum mammosum, S. marginatum, S. hirtum y S. umbellatum. En la fase de propagación sexual se evaluó el porcentaje de germinación, número de raíces, longitud de planta, días a formación de hojas y raíces, días a morfogénesis completa y materia seca. Se determinó el tipo de morfogénesis a través de callos, vástago y plantas totalmente formadas. Se estudiaron el número y longitud de brotes, número de raíces y hojas, producción de materia seca y días a morfogénesis completa. Para S. mammosum el mejor medio de germinación fue ½MS, para el desarrollo de plantas fue A y para propagación vegetativa, A-Nudos (Medio A con explantes tipo nudos. En el mismo orden, para S. marginatum fueron los medios A, H y ½MS y/o H con nudos, mientras que en S. hirtum fueron H,A y H-nudos. Para S. umbellatum no se encontraron diferencias en germinación entre H, ½MS y A. Para la formación de plantas el mejor medio fue ½ MS y para propagación vegetativa fue H-Nudo.

  20. Patrones de asociación entre insectos polinizadores y palmas silvestres en Colombia con énfasis en palmas de importancia económica

    OpenAIRE

    Núñez Avellaneda, Luis Alberto

    2014-01-01

    Se describe, analiza y valida el papel de los insectos que han sido considerados los principales polinizadores de palmas neotropicales: las especies del género Mystrops (Nitidulidae), diferentes grupos de gorgojos (Curculionidae), los escarabajos del género Cyclocephala (Dynastidae), especies de y Abejas sin aguijón (Apidae Meliponinae). El estudio se realizó a partir de un análisis multiespecífico y multitemporal de polinizadores que involucró la colecta, separación e identificacion de visit...

  1. Animais silvestres utilizados como recurso alimentar em assentamentos rurais no município de Uruará, Pará, Brasil

    Directory of Open Access Journals (Sweden)

    Reinaldo Lucas Cajaiba

    2015-08-01

    Full Text Available The consumption of hunting animals is of fundamental importance for human subsistence in different tropical areas. Knowing the chosen species, the techniques of capture and the quantity are fundamental aspects to understand how to use and the degree of threat of hunting on each wild species. In this perspective, the objective of this work was to record the wild animal species most commonly used as food resource in five rural settlements in the municipality of Uruará-PA, in addition to qualify the main techniques of capturing these species. The data collection was made through semi-structured interviews and participant observation. For the selection of the interviewees, we adopted the “snowball” method. As a result, we identified 38 species of animals consumed, most being mammals (42.1%, followed by birds (39.4% and reptiles (18.5%. The species most frequently mentioned were: Cuniculus paca (n=156, Euphractus sexcinctus (n=154 and Pecari tajacu (n=137. The most used technique was hunting with shotgun. Among the animals cited, Priodontes maximus, Tayassu pecari, Tapirus terrestris, Myrmecophaga tridactyla, Podocnemis unifilis, Tinamus tao, Crax fasciolata and Podocnemis unifilis are in the list of threatened species. The results point to the urgent need for educational programs to farmers regarding the unsustainable use of animals.

  2. Aedes albopictus em área rural do Brasil e implicações na transmissão de febre amarela silvestre

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    Almério de Castro Gomes

    1999-02-01

    Full Text Available Durante estudos ecológicos sobre mosquitos anofelíneos no município de Bataguassu, Estado de Mato Grosso do Sul, foram encontradas larvas e adultos de Aedes albopictus. Pela primeira vez sua introdução ocorre numa área enzoótica do vírus selvático da febre amarela no Brasil. Isto sugere risco potencial para transferência desse vírus para área urbana infestada com Aedes aegypti.

  3. Aedes albopictus em área rural do Brasil e implicações na transmissão de febre amarela silvestre

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    Gomes Almério de Castro

    1999-01-01

    Full Text Available Durante estudos ecológicos sobre mosquitos anofelíneos no município de Bataguassu, Estado de Mato Grosso do Sul, foram encontradas larvas e adultos de Aedes albopictus. Pela primeira vez sua introdução ocorre numa área enzoótica do vírus selvático da febre amarela no Brasil. Isto sugere risco potencial para transferência desse vírus para área urbana infestada com Aedes aegypti.

  4. Nuevos registros de nemátodes parásitos de animales de vida silvestre en el Perú

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    Manuel Tantaleán

    2014-06-01

    Full Text Available Se registran, por primera vez para el Perú, 4 especies de nemátodes: Dipetalonema graciliformis Freitas, 1964 parásito de Saguinus labiatus; Evaginuris branickii (McCiure, 1932 Quentín, 1973 de Dinomys branickii; Alaeuris caudatus (Lent & Freitas, 1948 de Iguana iguana y Serpinema amazonicus de Podocnemis expansa. También, se considera a Saguinus labiatus como un nuevo huésped para Dipetalonema graciliformis.

  5. Capacidad antioxidante de poblaciones silvestres de “tara” (Caesalpinia spinosa de las localidades de Picoy y Santa Fe (Provincia de Tarma, departamento de Junín

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    Alberto López S.

    2011-01-01

    Full Text Available El Perú es el principal abastecedor de “tara”, gracias a que nuestro país posee una gran variedad de climas y tipos de suelos, haciendo posible la obtención de este cultivo durante la mayor parte del año. El departamento de Junín cuenta con poblaciones naturales de “tara” que aun no han sido caracterizadas bioquímica ni genéticamente, que podrían aprovecharse en beneficio de las comunidades locales. En este trabajo se reporta la capacidad antioxidante de “tara” provenientes de las localidades de Picoy y Santa Fe, ambas ubicadas en Tarma, Junín. Se utilizó la técnica del DPPH y del ABTS para valorar la capacidad antioxidante; para la determinación de fenoles y flavonoides se utilizó el reactivo de Folin-Ciocalteau según la técnica de Singleton. La muestra de Picoy reportó mayor cantidad de fenoles siendo de 563.70 mg/g de extracto seco, mientras que la cantidad de flavonoides fue de 0.664 mg/g. La capacidad antioxidante mostro una mejor respuesta en la muestra de Picoy, reportándose mediante el DPPH un IC50 1.244 mg/ml y con el ABTS un 35.3% de inhibición. Estos datos podrían aprovecharse para incrementar el valor agregado y mejorar la oferta de este recurso en dicha localidad debido a sus mejores características antioxidantes.

  6. Causa de morte de animais silvestres oriundos de uma área de resgate: implicações na conservação

    OpenAIRE

    Elmer Alexander Genoy Puerto

    2012-01-01

    No Brasil, no transcorrer da última década tem-se aumentado a produção de energia renovável. Dessa forma, empreendimentos visando produção e distribuição de energia tem sido desenvolvidos, exemplo disto são as Pequenas Centrais Hidrelétricas (PCHs). Perda e fragmentação de habitat são consideradas fatores negativos para a conservação in situ, sendo que podem colocar em perigo de extinção numerosas espécies de vertebrados terrestres. Durante a construção de hidrelétricas, esses dois eventos po...

  7. Evaluación de medios de cultivo para propagación in vitro de semillas y explantes de especies silvestres de solanum

    OpenAIRE

    Lagos Burbano, Tulio César; Andrade Díaz, Danita; Córdoba Figueroa, Mónica Eliana; Criollo Escobar, Hernando

    2014-01-01

    Se evaluaron los medios de cultivo Hussey-Stacey (A), Hendrix et al. (H), Atkinson et al. (AT) y mitad de Murashyge y Skoog (½MS) para la propagación in vitro de semillas y explantes de Solanum mammosum, S. marginatum, S. hirtum y S. umbellatum. En la fase de propagación sexual se evaluó el porcentaje de germinación, número de raíces, longitud de planta, días a formación de hojas y raíces, días a morfogénesis completa y materia seca. Se determinó el tipo de morfogénesis a través de callos, vá...

  8. Variación del fenotipo antenal de poblaciones del domicilio, peridomicilio y silvestres de Triatoma dimidiata (Hemiptera: Reduviidae en Santander, Colombia

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    Corina María Arroyo

    2007-01-01

    Conclusiones. El fenotipo de sensilla antenal fue útil en la diferenciación intraespecífica de Triatoma dimidiata en diferentes hábitats. Las diferencias en hembras ponen de manifiesto nuevos arreglos sensoriales para la explotación del hábitat a diferencia de los machos, que por su mayor capacidad de dispersión, no se diferenciaron entre los ecotopos. La similitud entre hembras de zona urbana, con hembras de peridomicilio rural permite proponer al fenotipo antenal como un sencillo y eficiente indicador para la determinación del origen de triatominos que intentan colonizar nuevos hábitats.

  9. OCORRÊNCIA DE PARASITOS GASTRINTESTINAIS EM AVES SILVESTRES NO MUNICÍPIO DE SEROPÉDICA, RIO DE JANEIRO, BRASIL

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    Ísis Alves Costa

    2010-12-01

    Full Text Available This study aimed to assess the role of endoparasitic infections as another factor of biological pressure on both migratory and local bird species. The occurrence of endoparasites may be considered a sign of undesirable hygienic alterations, causing the shortening of natural fields, compromising the resting area and the habitat nutritional quality. A total of 75 fecal samples were collected at the Campus of the Universidade Federal Rural do Rio de Janeiro (UFRRJ, Brazil, between August 2007 and May 2008, and they were analyzed in a Lugol´s solution by Faust´s technique. Amongst the 82.66% positive samples for enteric parasites, 44% were parasitized by the trichomonads and 5.33% by the Chilomastix enterozoary genera, 52% presented coccidian oocysts, 29.33% showed Entamoeba coli, 37.22% presented Iodamoeba butschlii vegetative forms, and 10.66% were positive for worm eggs. The high prevalence of enteroparasites observed indicates the need of more detailed and frequent evaluations of the environmental sanitary conditions, whose impact seems to be associated to the scarce local hygienic conditions due to the growing anthropization.

  10. Flowering induction in radicchio (cichorium intybus l.var silvestre bischoff:the influence of vernalization in different types and classes of precocity

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    Ferdinando Pimpini

    2008-07-01

    Full Text Available All experiments were carried out at the Experimental Station “L. Toniolo” of the University of Padova (45°21’ N; 11°58’ E. Experiment 1. This research was undertaken to study the effect of increasing duration of cold periods (0-5-10-15- 20 and 30 days on three classes of “Rosso di Chioggia” with different precocity: “Perseo” (Precocious, “Leo” (Medium and “Virgo” (Late. Seeds were sown on different dates (V30-V20-V15-V10-V5 and V0, i.e. May 10th- 20th-25th and 30th, June 5th and 10th 2004 respectively and placed in pre-formed polystyrene multiple trays. Treatments with low temperatures (5 °C started on the 1st June for V30 and for the others (V5-V10-V15 and V20 25-20-15 and 10 days later in controlled growth chambers, while plants that did not require vernalization stayed in the greenhouse. After vernalization and its stabilisation for 15 days, plants were transplanted in open field (July 24th. Moreover, on the 30th of August the number of leaves in rosette and elongated stem on five flowered plants for each group was determined, to verify the possible existing relation between flowering and the number of leaves on plant. Experiment 2. This experiment was undertaken to compare the effect of vernalization on flowering of 8 cultivars of radicchio to assess their membership of annual or biennial species. The 8 cultivars were Rosso di Treviso tardivo “Sile tardivo”, Rosso di Treviso precoce “Mesola precoce”, Rosso di Chioggia “Perseo” (P, “Leo” (M and “Virgo” (L, Rosso di Verona “Cologna medio”, Variegato di Lusia “Adige tardivo” e Variegato di Castelfranco “Castellano medio”. All types were vernalized for 0-5 and 15 days (V0-V5 and V15. Seeds were placed (January 15th-25th and 30th 2005 for V15, V5 and V0 respectively in pre-formed polystyrene multiple trays. Vernalization (5 °C started on February 14th in controlled growth chambers and, at the end, was stabilized for 15 days. After vernalization and its stabilisation, plants were transplanted in open field (May 26th. In both experiments, after the transplant, plants were controlled everyday to determine the exact day in which the stem elongation started (stage 51 BBCH. Results showed that: (1 there is no relation between the number of leaves on plant and flowering; (2 vernalization exerts different effect on promoting flowering among types; (3 on average the effect of cold period is quantitatively related to its duration; (4 low temperature increased flowering precocity anticipating the stage of phase transition; (5 the behaviour of different types of radicchio shows that Rosso di Treviso tardivo is probably a biennial plant, while the others act as annual species.

  11. Métodos e Implicaciones de la Contracepción en Fauna Silvestre y Exótica en Zoológicos

    OpenAIRE

    Dave Wehdeking

    2010-01-01

    Es fácil comprender la importancia de los programas de mejoramiento diseñados para conservar las especies amenazadas y en peligro. Al mantener en cautiverio las poblaciones de animales, los zoológicos y acuarios son capaces de realizar investigación fundamental y allanar el camino a la posible reintroducción de especies en la naturaleza...

  12. Installation of devices in water tanks to prevent drowning of wild animals (Instalacion de Estructuras Dentro de Tanques de Agua Para Evitar El Ahogamiento de Animales Silvestres)

    Science.gov (United States)

    Alberto Lafon

    2006-01-01

    Domestic farm and ranch properties use a variety of water retention structures and water supply infrastructures that benefit wildlife. Some water supply systems, however, are harmful to wild birds, small mammals, and reptiles. Water supply systems include metal water tanks, cemented reservoirs, or excavated earthen retention ponds (or tanques as they are known in...

  13. Enraizamento de estacas de três espécies silvestres de Passiflora Cutting rooting of three wild Passiflora species

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    Marcelo Fideles Braga

    2006-08-01

    Full Text Available Em ambiente com nebulização controlada, estacas herbáceas com um par de folhas, contendo 2 ou 3 nós, foram testadas quanto ao enraizamento, utilizando-se de bandeja de poliestireno com célula de 95cm³ e saco plástico de 15x25x0,02cm com 1.730 cm³. Foram testadas estacas de Passiflora actinia, P. serrato-digitata e P. setacea. Observou-se que P. serrato-digitata apresentou 94,3% de estacas enraizadas com brotos e 2,4% de mortalidade; enquanto P. actinia e P. setacea apresentaram, respetivamente, 30,5% e 28,6% de estacas enraizadas com brotos e 56,8% e 60,7% de mortalidade. A alta mortalidade das estacas foi atribuída ao estado fenológico das matrizes de P. actinia e P. setacea e ao ataque de larvas de bradisia (Bradysia spp. Estacas com dois e três nós não apresentaram diferenças significativas, e o recipiente saco plástico de 1.730 cm³ proporcionou melhor desenvolvimento das mudas.Steam cuttings of three wild Passiflora species where tested for rooting in a mist regulated greenhouse. Cuttings with two or three buds were used with two kinds of containers: polystyrene trays with 95 cm³ cells and perforated plastic bags of 15x25x0.02cm, with 1,730 cm³. Passiflora serrato-digitata was the best, with 94.3% of rooted cuttings with shoots e only 2.4% of death cuttings. P. actinia and P. setacea showed , respectivelly, 30.5% and 28.6% of rooted cuttings and 56.8% and 60.7%, of death cuttings. The high death were attribute to phenological phases of P. actinia and P. setacea or injury caused by fungus-gnat larvae (Bradysia spp.. Cuttings with two or three buds didn't show differences among them. Plastic bags proporcioned the best results, increasing rooted cuttings and plant development.

  14. Influência do tamanho da amostra na estimativa da riqueza em espécies em levantamentos de abelhas silvestres (Hymenoptera, Apoidea

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    José Ricardo Cure

    1990-01-01

    Full Text Available The effect of area size, number of collecting hours and months surveyed, on the estimation of relative richness of bees is analized. In order to characterize a biogeographical region, it is suggested to collect various samples of no less than 400 especimens for each one, in contrasting localities within a region, utilizing the usual standardized methodology for wild bees collecting. Thus, it is possible to have a better profit of the effort invested in the survey, making it possible to estimate the relative species richness among different biogeographical regions, in shorter periods of time.

  15. La utilidad de los modelos de distribución de especies en la gestión cinegética de los ungulados silvestres

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    Refoyo, P.

    2014-12-01

    Full Text Available The usefulness of species distribution models in hunting management of wild ungulates We developed a distribution model of Iberian ibex (Capra pyrenaica using the maximum entropy method (Maxent based on information from the database of the Spanish Ministry of Agriculture, Food and Environment. The goal was to study the usefulness of such models to determine potential areas for reintroduction or natural colonization of the species. To validate the model, we used data generated from known densities of the Iberian ibex in 107 protected areas: 26 areas where the species is present, and 81 where it is not present. Findings showed that the preferred habitat for the species has steep slopes, altitude over 1,000 m, and seasonal variation in precipitation and temperature. We detected a significant relationship between the densities obtained in the study areas and their relation to the preferred habitat. Our results indicate these models can be useful in species management planning to determine areas for reintroduction of the species.

  16. Uma estação biológica para o estudo dos mosquitos e dos outros animaes silvestres relacionados com a febre amarela

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    Henrique de Beaurepaire de Aragão

    1943-01-01

    Full Text Available The outbreak of the jungle or forest yellow fever, through the adapta¬tion, quite recently of the yellow fever virus o the forest mosquitoes, brou¬ght the necessity of ecological researches on hese mosquitoes, as well as on the wild animals they bite, some of them being susceptible to the desease. This has been done by the special yellow fever Service of the State of Sao Paulo, in a special Biological Station in Perús, São Paulo, which has been built in the midst of the jungle. This station was made with plain materials, and covered with straw, but was confortable enough for the technical work, i nthe early months of 1938. During the months in which the investigations were being carried on, the following interesting results were obtained: 1. As we have already pointed out in other places, the forest mosquitoes biting us during daytime, are always new born insects, having not yet sucked blood, as it is the general rule with all mosquitoes, and therefore also, with the anopheles and stegomyia, and this explains why nobody gets malaria or yellow fever, transmitted by anofeles or by aedes aegypti during the day. We think therefore, the jungle yellow fever, got during daytime is not due to the infected jungle or forest mosquito biting, but to infection through the human skin coming into close contact with tre virus, which the forest mosquitoes lay with their dejections, on the leaves of the trees where they remain sitting du¬ring the day. 2. As it is the rule with anopheles, stegomyia and other mosquitoes, the insects once having sucked blood, take nocturnal habits and, therefore, bite us, only during the night, so it happens with the forest mosquito, and insects with developped eggs and blood in stomach have been caught within the sta¬tion house, during the night. During the day, these mosquitoes do not bite, but remain quite still on the leaves of the trees, in the damp parts of the woods. 3. Jungle or forest mosquitoes can easely bite wild animals, some with more avidity then ethers, as it has bee npointed out to the opossum (didei-phis and other animals. They also bite birds having very thin skin and only exceptionally, cold bloods animals. 5. Is has hot been possible to ascertain how forest mosquitoes are able to live, from onde season to another, through winter, when temperature drops near and even below zero. They have not been found in holes of the terrain, of trees and of animals, as it is the rule in cold countries. During winter, in the forest, it is possible to find larvs in the holes of bambus and trees full of water. As wild animals do not harbour the yellow fever virus for a long time in their body, it is diffcult to explain how the desease lasts from one season to another. Many ecological features on the mosquito, remains yet to be explained and therefore it in necessary to go on with the investigations, in bio¬logical stations, such as that one built up in Perús, São Paulo.

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

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    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.

  18. Toxoplasmose em animais silvestres e domésticos da região de Botucatu, estado de São Paulo, Brasil

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    Ednir Salata

    1985-02-01

    Full Text Available Os Autores analisaram soros de 47 Cannis familiaris, de 9 Felis cattus, de 64 Didelphis marsupialis aurita, de 9 Dasypus novemcinctus, de 4 Cabassous tatouay e de 29 Rattus rattus, através da reação de imunofluorescência indireta, para pesquisar a presença de anticorpos anti Toxoplasma gondii. Estes foram encontrados apenas em C. familiaris (63,8% e em D. m. aurita (4,7%. Frente aos resultados obtidos, os Autores sugerem que novas pesquisas nesta área sejam realizadas, para que se conheça melhor a importância epidemiológica de várias espécies animais na disseminação da toxoplasmose.

  19. Estudio de la composición en ácidos grasos del aceite de las semillas en algunas plantas silvestres españolas

    OpenAIRE

    Vioque, Javier; Pastor Díaz, Julio Enrique; Vioque Martínez, Eduardo

    1994-01-01

    The fatty acid composition of 34 species of plants from a variety of families that grow wild in the Iberian Peninsula was analysed. The aim to the survey was to indentify oils that contain a mix of fatty acids that from a qualitative or quantitative point of view have a commercial value. Because of the diverse taxonomic origin of the samples, the oil content between species was very variable, fluctuating between an average value of 3.4% in the Caryophyllaceae and 31.1% in &...

  20. Aves silvestres infestadas por Phthiraptera (Insecta na Zona da Mata Norte de Pernambuco, Brasil Wild birds infested by Phthiraptera (Insecta in Pernambuco North Zona da Mata

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    Sônia Aline Roda

    1999-01-01

    Full Text Available Studies were carried out on the relationship between Phthiraptera and wild birds captured by mist nets at the Engenho Independência, at Vicência's county. Three families of Phthiraptera were identified. The Menoponidae were the one with the highest number of hosts. They were specially found in the dorsal face of the remiges. The Trochiloecetidae were only seen infesting the neck of birds belonging to the hummingbirds. The Philopteridae were observed on birds from three orders showing the highest variety of distribution on the birds.

  1. Th e rediscovery of the Redwood orpiment and a Th e rediscovery of the Redwood orpiment and a cocktail of plants macerates containing arbutin to cocktail of plants macerates containing arbutin to defeat the Arribas-Silvestre defeat the Arribas-Silvestre,s syndrome in a bien agée s syndrome in a bien agée upper class lady

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    Lorenzo Martini

    2017-10-01

    Full Text Available The Arribas-Silvestre’s syndrome is a sort of photodermatitis induced especially in elder (especially women when they use to put pure essences or fragrances directly onto their skin, take some medicaments and expose to sun rays periodically. The black spots are irreversible and are aesthetically unpleasant. Generally people tend to renounce to treat this disease, since it seems no remedy is available and strongest lotions or emulsions containing 2-5% of hydroquinone are banished and anyway perilous. Here I herald a simplest method using on alternate days an ancient orpiment to abrade black spots and a mix of herb macerates containing arbutin, apt to bleach the original brownish or black maculae.Results are amazing.

  2. 77 FR 33307 - Columbia Unlimited Hydroplane Races; Kennewick, WA

    Science.gov (United States)

    2012-06-06

    .... FOR FURTHER INFORMATION CONTACT: If you have questions on this notice, call or email BM1 Silvestre Suga III, Coast Guard Marine Safety Unit Portland; telephone 503-240-9327, email Silvestre[email protected

  3. 76 FR 73511 - Safety Zone; M/V DAVY CROCKETT, Columbia River

    Science.gov (United States)

    2011-11-29

    ... INFORMATION CONTACT: If you have questions on this temporary rule, call or email BM1 Silvestre Suga, Waterways Management Division, Marine Safety Unit Portland, Coast Guard; telephone (503) 240-9319, email Silvestre.G...

  4. 77 FR 19544 - Regulated Navigation Area, Zidell Waterfront Property, Willamette River, OR

    Science.gov (United States)

    2012-04-02

    ... INFORMATION CONTACT: If you have questions on this rule, call or email BM1 Silvestre Suga III, Waterways Management Division, Coast Guard Sector Columbia River, telephone 503-240-9319, email Silvestre[email protected

  5. 76 FR 58112 - Safety Zone; M/V DAVY CROCKETT, Columbia River

    Science.gov (United States)

    2011-09-20

    ... Silvestre Suga, Waterways Management Division, Marine Safety Unit Portland, Coast Guard; telephone 503-240- 9319, e-mail Silvestre[email protected] . If you have questions on viewing the docket, call Renee V...

  6. 76 FR 49664 - Safety Zone; M/V DAVY CROCKETT, Columbia River

    Science.gov (United States)

    2011-08-11

    ... questions on this temporary rule, call or e-mail BM1 Silvestre Suga, Waterways Management Division, Marine Safety Unit Portland, Coast Guard; telephone 503-240- 9319, e-mail Silvestre[email protected] . If you...

  7. 76 FR 42549 - Columbia Unlimited Hydroplane Races; Kennewick, WA

    Science.gov (United States)

    2011-07-19

    ... have questions on this notice, call or e-mail BM1 Silvestre Suga III, Coast Guard Marine Safety Unit Portland; telephone 503-240-9327, e-mail Silvestre[email protected] . SUPPLEMENTARY INFORMATION: The Coast...

  8. Caracterización de los aceites crudo, neutro y decolorado de la pulpa y cascara de la fruta silvestre Paraqueiba sericea tulasne «Umarí».

    Directory of Open Access Journals (Sweden)

    Chasquibol Silva, Nancy A.

    1997-02-01

    Full Text Available Crude, neutro and blenched oil extracted from pulp and peel of jungle fruit Paraqueiba sericea tulasne «Umarí» were studied. The crude oil was extracted with hexane by the soxhlet method giving a 47.86% yield, a 31.72% yield in neutro oil and a 94.89% yield in blenched oil. Chemical and physical constants were determined. In addition, five methyl esters of fatty acids were quantitatively determined by GLC using DEGS as stationary phase. The results indicated that Umarí oil belongs to a not drying type with a high content of unsaturated fatty acids principaly oleic. The analytical values obtained confirm the convenience of using Umarí oil in food and cosmetic industries.

    Se estudian los aceites crudo, neutro y decolorado del fruto del Umarí. La extracción del aceite crudo se realizó mediante hexano por el método de soxhlet. El rendimiento fue de un 47,86% en aceite crudo, 31,72% en aceite neutro y 94,89% en aceite decolorado. Por métodos analíticos se determinaron constantes químicas y físicas. Además por cromatografía gas-líquido se cuantificaron cinco esteres metílicos de ácidos grasos, usando DEGS como fase estacionaria. Los resultados del estudio indican que el aceite de Umarí corresponde a un aceite del tipo no secante y con alto contenido de ácidos grasos insaturados principalmente oleico. Los índices analíticos obtenidos confirman la conveniencia de usar aceite de Umarí para aplicaciones en alimentos y cosmética.

  9. Contribuição da fauna silvestre em projetos de restauração ecológica no Brasil Contribution of the wildlife in ecological restoration projects in Brazil

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    Wanuza Helena Campos

    2012-12-01

    Full Text Available O sucesso no processo de restauração e manutenção da dinâmica de um ecossistema é extremamente dependente da capacidade das espécies em promover interações interespecíficas entre as diversas formas de vida. Estas interações criam um cenário favorável à restauração ecológica de ecossistemas degradados. Assim, por meio de revisão de literatura, o objetivo deste trabalho é relatar a contribuição e utilização dos diferentes grupos de animais na execução de projetos de restauração ecológica no Brasil. As aves e mamíferos frugívoros e também outros animais, como os répteis, peixes e insetos, têm se destacado como ferramentas de auxílio aos projetos de restauração ecológica. As técnicas para atração de animais e consequente chegada de propágulos em um ecossistema degradado compreende a utilização de poleiros, que servem de pouso e abrigo para a avifauna e morcegos, e a utilização de abrigos artificiais, que servem para fuga de predadores, descanso e reprodução dos animais. De modo geral, estes estudos são excelentes ferramentas para gerir ações de manejo ambiental em ecossistemas degradados, possibilitando a recuperação da biodiversidade destes ambientes. The success in the process of restoration and maintenance of the dynamics of an ecosystem is highly dependent on the capacity of species to promote interspecific interactions among the various life forms. These interactions create a favorable environment for the ecological restoration of degraded ecosystems. Thus, by review the literature, the objective of this study is to report the contribution and use of different animal groups in carrying out ecological restoration projects in Brazil. The fruit-eating birds and mammals and also other animals such as reptiles, fish and insects have been highlighted as tools to aid environmental ecological restoration projects. Techniques for attracting animals and consequent arrival of seedlings in a degraded ecosystem comprises the use of perches, which serve as landing and shelter for birds and bats, and the use of artificial shelters, which serve to escape from predators, resting and reproduction of animals. In general, these studies are excellent tools for managing environmental management actions in degraded ecosystems, enabling the recovery of biodiversity in these environments.

  10. Analysis of the generation and monitoring of impact on fauna in the gas pipeline works in the current environmental legislation; Analise da geracao e monitoramento do impacto sobre a fauna silvestre em obras de gasodutos face a legislacao ambiental vigente

    Energy Technology Data Exchange (ETDEWEB)

    Caldas, Flaviana V.; Serricchio, Claudio [PETROBRAS, Rio de Janeiro, RJ (Brazil); Akahori, Lisa [TELSAN Engenharia e Servicos Ltda, Vitoria, ES (Brazil); Nascimento, Reinaldo R. [IMC Saste - Construcoes, Servicos e Comercio Ltda., Sao Paulo, SP (Brazil)

    2008-07-01

    The impacts to wildlife in areas where gas pipelines will be implemented are considerable, changing the existing balance. The main environmental measure adopted in the cases is the deployment of the Fauna Management Programme. This programme is sub - divided into two: Monitoring and Rescue of the fauna. The tracking step starts before the installation of the venture, with the completion of a first in order to identify the impacts before the venture, and finishes two years after the end of the works. These studies are based on guidelines set in the Normative Instruction of the environmental licensor agency, in which the criteria for implementation are restrictive, often without making a license agency distinction of methodology for enterprises with different characteristics. This article intended to review the criteria and the procedures established by the legislation and its real applicability in gas pipeline projects face to the environmental impacts identified to this activity. For this analysis, the methodology used was the case study of two gas pipelines: Cabiunas - Vitoria (GASCAV) and Cacimbas - Catu (GASCAC). The results allowed to conclude that the actions developed to the Sub-Programme of Rescue of the fauna are satisfactory to control environmental impacts and that the Sub-Programme of Monitoring of the fauna just confirm behaviors and information's previous detected. (author)

  11. An English-Spanish Glossary of Terminology Used in Forestry, Range, Wildlife, Fishery, Soils, and Botany = Glosario en Ingles-Espanol de Terminologia Usada en Forestales, Pastizales, Fauna, Silvestre, Pesqueria, Suelos, y Botanica.

    Science.gov (United States)

    Medina, Alvin Leroy

    This document presents English-Spanish/Spanish-English equivalent translations of scientific and management terms commonly used in the field of natural resource management. The glossary is composed of two sections. Section 1 contains the English to Spanish translations, while Section 2 provides the Spanish to English translations. Each section is…

  12. Estudos dos agrupamentos vegetativos relacionados com as áreas onde foram efetuadas as pesquisas sôbre a febre amarela silvestre no Município de Passos, Estado de Minas Gerais

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    Henrique P. Veloso

    1947-09-01

    Full Text Available The work reported here was carried-out on the invitation of Dr. Henry Kumm, Director of the Rockefeller Foundation, and by appointment from Dr. Henrique Aragão, Director of the Instituto Oswaldo Cruz. It was done during the investigation of sylvan yellow fever, in June 1947, with a view to establishing the phyto-ecological conditions of the county of Passos. The pe¬riod was, however, too short for definite conclusions to be reached. Thanks are due to Dr. O. R. Causey, Chief of Research on Yellow Fever for transpor¬tation and other help. THE REGIONAL VEGETATION. Aerial photographs of the county of Passos shoto that it is covered by three great types of vegetation: Rain Forest, Secondary Pasture Land and Scrub.1 Detailed investigation, however, brings out the fact that these correspond to different seres; furthermore, each type presents not only the specific, characteristics of the biological form dominant for the climate, but also are at various stages, which express HABITATS differing from those of the normal sere. The phytogeographic survey of the region shows that most of it is now covered by secondary pasture land (disclimax in which Melinis minutiflora, v. "fat grass" (fig. 1, predominates. The mosaic of Rain Forest and of small patches of Scrub reveals the effects of human intervention (BARRETO, H. L. de Mello 1; consequently, all the formations have to be regarded as secon¬dary, though some of them probably include relicts of the primitive climax (WARMING, E. 2. On close examination, the Scrub cannot be considered as the climax, because of the following facts: 1. In the zone of Rain-Forest stretches of forest are present in very varied topographic conditions and the reconstitution of the associations show that man has destroyed an ecological unit (fig. 2. 2. In the zone of Scrub the characteristic patches are small. The banks of rivers and brooks, the valleys and ravine and whatever the soil has retained some humidity, is being invaded fry Rain Forest, which seems to be growing under optimum conditions. The Scrub is thus limited to small belts on the calcareous mountains and on sandy soils with alcaline depths (pH abo¬ve 7 which do not retain enough moisture for the Rain Forest that is progres¬sively restricting the area occupied by Scrub. In view of the topographic and present climatic conditions the Rain Forest must consequently be regarded as the regional climax. The presence of ecologically contradictory elements and associations shows that the real problem is that of the fluctuations of the climate of Passos or even of Minas Geraes during the quaternary and recent periods (DAN-SEREAU, P. : 3, a subject on which little is known and which is tied to the evolution of the climate of Brazil (OLIVEIRA, E. : 4 . The transformation of Scrub into Rain Forest has been - observed by the author before, in other parts of Brazil (VELOSO, PL P.: 5 . It seems probable that the Rio Grande has also greatly influenced the change of the regional vegetation, by invading areas of Scrub and dislocating the limit of the Pluvial climate towards the Canastra Range, though there are remnants of Scrub (postclimax transfor¬med into secondary open country (disclimax, fig. 5 by human devastation and the setting of fire to the land. VEGETATION GROUPS OF THE PLUVIAL TYPE. The map of the region also shows that at the present time the small patches of forest (whether devasted or intact occupy the least accessible places, such as valleys, peaks and abrupt slopes (fig. 2. Even these are now being destroyed, so that in the near future this forested region will be en¬tirely reduced to poor pasture land unless energetic measures of conservation are undertaken in time. The Special Service for Prophylaxis against Yellow Fever installed two of their four Stations for the Capture of Mosquitos in this area, one of them at Batatal and the other at Cachoeira, which have separate formations each of them composed of several associations. Other vegetation formations were also analysed, from the synecological point of view, so as to ascertain of which degree of succession their associations belong. These phytosociological sur¬veys give an idea of the principal characteristics of each station. BATATAL FORMATION. The abrupt nature of the valley has rendered this location inappropriate for agricultural purposes since colonial times. The relict of the primitive forest climax saved by this circumstance has expanded gradually to zones whose paedologic conditions favour the eatablishment of mesophilous species. The aerial photograph shows two small stretches of forest, one apparently primi¬tive, the other composed of associations belonging to the subclimax of the subsere. CACHOEIRA FORMATION. Aerial photographs show that this station is crossed by a small river, which divides it into two separate parts. The first, which presents ecological conditions similar, though not identical to those of Batatal, is favoured by topography and apparently remains primitive forest. Though the topography of the other, on the whole, favours the establishment of groups belonging to the normal sere of the climax, is has been partly devastated recently and the aspect of the associations has been completely modified. It was is this part that the four posts for the capturing of mosquitos were set up. The first forest is favoured by deposition of organic matter, washed out from the nearby devasted areas by torrential rains, and thus provides, an appropriate HABITAT for the climax species with certain hygrophilous trends of the ecological quasiclimax type. This association seems to have reached a biological equilibrium, as the dominates. Gallesia gorarema and Cariniana legalis (fig. 10, present an optimum vitality with a vigorous habit and a normal evolutionary cycle. The Cariniantum legalis Gallesiosum equilibrium, corresponds however, to a provisory association, because if the moving of soil by torrential rains should cease it would become possible…

  13. OBTENCIÓN DE CEPAS Y PRODUCCIÓN DE INÓCULO DE CINCO ESPECIES DE HONGOS SILVESTRES COMESTIBLES DE ALTA MONTAÑA EN EL CENTRO DE MÉXICO

    Directory of Open Access Journals (Sweden)

    Yolanda Arana-Gabriel

    2014-01-01

    Full Text Available Se obtuvieron cepas de Psathyrella spadicea , Floccularia aff. luteovirens , Clitocybe squamulosa , Flammulina mexicana y Lyophyllum aff. shimeji , cuyos esporomas son recolectados y consumi - dos por habitantes del Nevado de Toluca, México. Las cepas se estudiaron in vitro en seis medios de cultivo (ACP: Agar croquetas de perro, AM: Agar maíz, PDA-PL: Agar papa dextrosa-pepto - na y levadura, EMA-PL: Agar extracto de malta-peptona y levadura, PDA y EMA a 18 °C y 25 °C. Las especies se desarrollaron satisfactoriamente a 18 °C , siendo F. mexicana y L . aff. shimeji las que tuvieron mayor velocidad de crecimiento y producción de biomasa. Flammulina mexicana solo se desarrolló a 18 °C, presentando mayor crecimiento y producción de biomasa en ACP. La cepa de L. aff. shimeji creció a 18 y 25 °C, la mayor velocidad de crecimiento se registró en medio PDA a 18 °C y la mayor producción de biomasa en EMA-PL a 18 °C. Considerando las mejores condiciones para el desarrollo de micelio in vitro, se produjo inóculo primario de F. mexicana y L . aff. shimeji en trigo y sorgo. La mayor densidad del micelio y porcentaje de grano cubierto se obtuvieron con el sustrato de trigo.

  14. Characterization and cultivation of a wild mushroom species isolated in Brazil
    Caracterização e cultivo de uma espécie de cogumelo silvestre isolado no Brasil

    OpenAIRE

    Luzia Doretto Paccola-Meirelles; Cristina Sayuri Maki

    2002-01-01

    Wild mushrooms were collected close to cattle manure in pasture areas in Tamarana (Paraná/Brazil), with the objective of finding and domesticating new non-exploited basidiomycetes. An edible basidiomycete of the Agaricales order was classified as belonging to the Macrolepiota bonaerensis species (=Lepiota procera, form bonaerensis (Speg.) Rick or M. procera (Scop.:Fr) Sing.). The mycelia was isolated and characterized for growth rate in different culture media. A vigorous growth was observed ...

  15. Aedes albopictus em área rural do Brasil e implicações na transmissão de febre amarela silvestre Aedes albopictus in rural zone of Brazil and its implication in the sylvatic yellow fever transmission

    Directory of Open Access Journals (Sweden)

    Almério de Castro Gomes

    1999-02-01

    Full Text Available Durante estudos ecológicos sobre mosquitos anofelíneos no município de Bataguassu, Estado de Mato Grosso do Sul, foram encontradas larvas e adultos de Aedes albopictus. Pela primeira vez sua introdução ocorre numa área enzoótica do vírus selvático da febre amarela no Brasil. Isto sugere risco potencial para transferência desse vírus para área urbana infestada com Aedes aegypti.Larvae and adult forms of Aedes albopictus were found during ecological study of anopheline mosquitos in the rural zone of the state of Mato Grosso do Sul in Brazil. This occurrence was registered, for the first time in Brazil, in an enzoootic area if sylvatic yellow fever virus. This implies a potential risk of the transfer of this virus to an urban area infested with Aedes aegypti.

  16. Percepción y patronos de uso de la fauna silvestre o comunidades indigenas Embera - Katíos en la cuenca del río San Jorge, zona amortiguadora del PNN - Paramillo.

    Directory of Open Access Journals (Sweden)

    Javier Alfonso Racero - Casarrubia

    2008-12-01

    Full Text Available In workshops with four indigenous communities in the Embera-Katíos communal lands (resguardo , located in the upper San Jorge River Valley (Tres Playitas, Las Piedras, Boca San Cipriano, San Juan Medio, information about the wild fauna that they recognized inside their hunting grounds was collected. Mammals, reptiles, and birds, especially the Psittacidae family, are the vertebrates most used by the indigenous communities. No kind of use was found for amphibians. The consumption of reptiles such as Iguana iguana, Tupinambis teguixin, Caiman crocodylus fuscus, and Crocodylus acutus show them to be an important part of their culture. The indigenous communities associate environmental problems with habitat destruction due to the cultivation of illicit crops and forest clearing in the buffer zone around Paramillo National Park.

  17. Conservação, diversidade e distribuição de variedades locais de milho e seus parentes silvestres no extremo oeste de Santa Catarina, Sul do Brasil

    OpenAIRE

    Silva, Natália Carolina de Almeida

    2015-01-01

    Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Agrárias, Programa de Pós-Graduação em Recursos Genéticos Vegetais, Florianópolis, 2015. As informações sobre a atual diversidade de milho do Brasil são escassas e a maior parte dos estudos tem se destinado a caracterizar e analisar a diversidade conservada ex situ. Pesquisas antecedentes têm demonstrado que a microrregião Extremo Oeste do estado de Santa Catarina possui uma importante riqueza de variedades locai...

  18. Patrones de distribución de felinos silvestres (Carnívora: Felidae en el trópico seco del Centro-Occidente de México

    Directory of Open Access Journals (Sweden)

    Juan Felipe Charre-Medellín

    2015-09-01

    Full Text Available El estado de Michoacán se caracteriza por presentar una importante heterogeneidad ambiental, en términos de clima, topografía y tipos de vegetación, que incluyen al bosque tropical seco que se encuentra en peligro de extinción a nivel mundial. Algunos trabajos mencionan la presencia de las seis especies de felinos que habitan en México, para la región; sin embargo, la evidencia para apoyar estos trabajos es escasa, por lo que llenar esta falta de información es especialmente crítico en el caso de especies o hábitats amenazados. El objetivo de este estudio fue sistematizar la información y analizar los patrones de distribución de los felinos en el estado de Michoacán, dentro del centro-occidente de México. Realizamos una revisión de la información bibliográfica y contenida en bases de datos sobre la presencia de felinos en esta región. Asimismo, realizamos trabajo de campo que en el curso de diez años donde se aplicaron distintos métodos para detectar la presencia de especies de felinos (recorrido de senderos para obtener evidencia directa e indirecta de la presencia de las especies, trampas cámara y entrevistas. Localizamos 29 registros de presencia en literatura y bases de datos. Por otra parte acumulamos un total de 1 107.5 km de transectos recorridos y 8 699 días/cámara-trampa. A través de este esfuerzo de muestreo, generamos 672 registros de presencia de las seis especies. Lynx rufusfue la especie con menos registros totales (n = 3 y cuya distribución contrastó más con la del resto de las especies. La especie con más registros fue Leopardus pardalis(n = 343. En general, el 89% de los registros de felinos se obtuvieron por debajo de los 1 000 msnm. En promedio, la temperatura media anual y la precipitación anual donde se ubicaron los registros fue de 24 °C y 1 040 mm respectivamente. La especie que mostro un patrón más claro en términos de temperatura y precipitación fue L. rufus(15.8 ± 1.3°C y 941 ± 171 mm. De acuerdo con el dendrograma resultante del análisis de conglomerados de las combinaciones de ecorregiones y tipos de vegetación se logró distinguir cinco grupos. Este estudio permite tener un panorama más completo de los patrones de distribución de los felinos en una región de importante contraste ambiental y sujeto a un fuerte impacto por las actividades humanas. Asimismo, los datos generados en este estudio pueden ayudar a profundizar nuestro entendimiento de la relación que existe entre la distribución de especies de felinos y las características del ambiente y servir como base para el desarrollo de estrategias de conservación local y regional.

  19. Repelência de substâncias naturais e sintéticas aos mamíferos silvestres consumidores de sementes de Araucaria angustifolia (Bertol. Kuntze em semeadura no campo.

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    Guilherme O. S. Ferraz de Arruda

    2008-01-01

    Full Text Available This work aimed at testing some natural and synthetic substances, not phytotoxics and not lethal for the fauna, to verify the repellence action for the consuming wild animals of Parana-Pine seeds, in two direct sowing experiments in the field. In experiment I, there was the direct application of the treatments in the Parana-Pine seeds and, in the experiment II, there was the application of the treatments only in the surface of the plantation hollows, after the sowing of Parana-Pine seeds. The Parana-Pine seeds and the treatments were prepared at Laboratory of Center of Agroveterinary Sciences, University of Santa Catarina State, at Lages city, Brazil. The experiments were carried to a native-antropic field area at Lages city. It was adopted the experimental design of randomized blocks for both experiments. Experiment I was composed of 15 treatments, 10 seeds per treatment, with 4 replications, and experiment II was composed of 11 treatments, 10 seeds per treatment, with 4 replications. The tested substances, isolated or in mixtures, were: fruit of red pepper, root of parsley, stem and leaf of wormwood herb, lemon scented gum essential oil, linseed oil, castor bean oil, rosin, copper oxychloride, copper sulphate, sulphur, látex ink and calcium lignosulfonate. Through the periodic inspections, during 167 and 165 days respectively for the experiments I and II, data were collected and organized through the attacked and not attacked Paraná-Pine seeds, being submitted to statistical analysis later. The predation rates were considered high for both experiments: 86,7% in experiment I and 84,3% in experiment II. In the experiment with treated Parana-Pine seeds, the longer time for the beginning of the predation was 104 days after the sowing, while, in the experiment with treatment in the environment (hollows, it was 64 days after the sowing. Solution of rosin and alcohol + lemon scented gum oil, applied in the seeds, presented potential for reduction of the predation level. The treatments with linseed oil presented changeable behaviors, equally to the treatments with latex ink, in the experiment with treated Parana-Pine seeds. In the experiment with treated hollows, the lignosulfonate of calcium in mixture with extracts of pepper, with root of parsley and with wormwood herb presented significant effect of reduction on the predation. The solution of linseed with red pepper extracts and with root of parsley extract also had significant effect for reduction of the predation of these seeds, in the experiment with treated hollows

  20. Plantas medicinales silvestres y/o naturalizadas en la península de Araya, estado Sucre, Venezuela | wild and/or naturalized medicinal plants in the Araya peninsula of Sucre state, Venezuela

    Directory of Open Access Journals (Sweden)

    Jesús Bello Pulido

    2017-11-01

    Full Text Available Currently, the accelerated processes of transculturation and the eminent deterioration of ecosystems are jeopardizing the biodiversity that has contributed to the welfare of the inhabitants of the planet, whether by providing food, medicine or craft. For this reason, the present study attempts to expand the ethnobotanical knowledge within 21 coastal communities of the Araya peninsula in Sucre state, Venezuela. To gather this information, non-structured interviews were conducted on older adults and key-informants who maintain an ongoing relationship with the plants of their local environment. These interviews were held during field trips made between 2010 and 2016. A total of 24 families, 47 genera and 52 species (50 dicots and 2 monocots of plants with some degree of utility were identified. Among them, 46 species are wild and 6 were introduced and now naturalized. A total of 26 new products of the medicinal flora from the peninsula is reported.

  1. ¿Es posible la recuperación de especies silvestres extintas a través de la transferencia somática nuclear? Is the recovery of extinct wild species through somatic nuclear transfer possible?

    Directory of Open Access Journals (Sweden)

    Janet López-Saucedo

    2010-08-01

    Full Text Available El avance de las ciencias biomédicas está llegando a campos inexplorados y sorprendentes; en fecha reciente, se ponderó la posibilidad de "recuperar" especies extintas al publicarse la "resurrección" de la primera subespecie extinta: el bucardo. No obstante, la incorporación de técnicas reproductivas avanzadas en el mundo de la conservación biológica se mantiene hasta ahora limitada e incluso, en ocasiones, mal encaminada. Los factores involucrados en este pobre desarrollo son diversos, pero uno de los más importantes es el rechazo de la comunidad "conservacionista" a las estrategias de alta tecnología. Sin embargo, considerando que México es un país megadiverso, con un gran número de especies de mamíferos amenazados, es urgente la necesidad de que se incorporen herramientas biotecnológicas al estudio y conservación de las especies del país, y más aún, que sean las mismas comunidades científicas latinoamericanas quienes desarrollen y utilicen sus propias herramientas. En esta nota, se discuten los avances científicos que proponen la transferencia somática nuclear como una herramienta de conservación, sus posibilidades reales, las necesidades y sugerencias para su aplicación y desarrollo con el fin de convertir la biotecnología moderna en instrumento para la lucha por la conservación de las especies amenazadas de México y Latinoamérica.The advances in the world of the biomedical sciences are reaching unexplored and unexpected areas, such as the possibility of "recovering" extinct species. This has been highlighted by the recent publication of the "resurrection" of the first extinct subspecies: the Pyrenean ibex. Nevertheless, the incorporation of advanced reproductive techniques in the world of biological conservation has been limited until now and in occasions even misguided. The factors involved in this slow development are diverse but the most important one is the rejection by the "conservationist" community to high technology approaches. However, considering that Mexico is one of the megadiverse countries with a great number of species of threatened mammals, biotechnological tools are urgently needed for conservation research of Mexican species. Furthermore, these tools need to be utilized and developed by our own scientific Latin-American community. In this note, we discuss the scientific advances that have proposed the use of somatic nuclear transfer as a conservation tool, its real possibilities, the needs and suggestions for its development in threatened Mexican / Latin-American mammal species that should allow modern biotechnology to turn into one more tool in the battle of biological conservation.

  2. An English-Spanish glossary of terminology used in forestry, range, wildlife, fishery, soils, and botany (Glosario en Ingles-Espanol de terminologia usada en forestales, pastizales, fauna, silvestre, pesqueria, suelos, y botanica)

    Science.gov (United States)

    Alvin Leroy Medina

    1988-01-01

    The English-Spanish/Spanish-English equivalent translations of scientific and management terms (jargon) commonly used in the field of natural resource management are presented. The glossary is useful in improving communications and fostering understanding between Spanish- and English-speaking persons.

  3. Estudos sôbre reservatórios e vetores silvestres do Trypanosoma cruzi. XXII. Modificações dos focos naturais da tripanossomose americana e suas conseqüências

    Directory of Open Access Journals (Sweden)

    Mauro Pereira Barreto

    1967-08-01

    Full Text Available Os focos naturais da tripanossomose americana, como tôda biogeocenose, podem. permanecer relativamente estáveis, sendo esta estabilidade necessária para a própria existência dêsses focos. Mas o balanço ecológico pode ser alterado, sendo muito importante aquelas alterações devidas à interferência direta ou indireta do homem ao exercer atividades ligadas ao desbravamento e à colonização. Entre as conseqüências podemos citar: 1 redução ou desaparição dos focos naturais; 2 concentração de hospedeiros e vectores em áreas favoráveis limitadas; 3 deslocamento de hospedeiros e vectores para outras áreas; 4 invasão das habitações humanas e anexos, com a instalação do ciclo doméstico da infecção. Estas possibilidades são analisadas e ilustradas com exemplos.

  4. Estudio jurídico sobre la aplicación del proceso sancionatorio ambiental para la protección de la fauna silvestre en tres municipios del departamento del Chocó, 2005-2010

    Directory of Open Access Journals (Sweden)

    Lisneider Hinestroza Cuesta

    2012-01-01

    Full Text Available El régimen sancionatorio ambiental se define como el conjunto de normas, procedimientos y/o acciones utilizados para imponer los correctivos administrativos y castigar al que infringe o viola las normas ambientales vigentes, para garantizar la conservación del medio ambiente y el uso racional de los recursos naturales. Con el objetivo de analizar desde un enfoque jurídico su aplicación y el cumplimiento de las funciones administrativas de las Autoridades Ambientales, asignadas por la Ley 99 de 1993, la Ley 1333 de 2009, decretos y resoluciones que la reglamentan, se realizó una investigación de tipo descriptivo en los municipios de Istmina, Riosucio y Quibdó, en el departamento del Chocó, a partir del estudio de casos, análisis de legislación ambiental nacional y jurisprudencia de la Corte Constitucional colombiana, determinando las competencias de la autoridad ambiental con jurisdicción en la región (Corporación Autónoma Regional para el Desarrollo Sostenible del Chocó, CODECHOCÓ. No existen reportes concretos sobre la imposición de sanciones ambientales para la protección del recurso fauna durante los años 2005 a 2010 y se presentan en medios de comunicación local y por la comunidad en general cuestionamientos sobre el ejercicio de la potestad sancionatoria de esta autoridad ambiental.

  5. Caracterización de los aceites crudo, neutro y decolorado de la pulpa y cascara de la fruta silvestre Paraqueiba sericea tulasne «Umarí».

    OpenAIRE

    Chasquibol Silva, Nancy A.

    1997-01-01

    Crude, neutro and blenched oil extracted from pulp and peel of jungle fruit Paraqueiba sericea tulasne «Umarí» were studied. The crude oil was extracted with hexane by the soxhlet method giving a 47.86% yield, a 31.72% yield in neutro oil and a 94.89% yield in blenched oil. Chemical and physical constants were determined. In addition, five methyl esters of fatty acids were quantitatively determined by GLC using DEGS as stationary phase. The results indicated that Umarí oil ...

  6. Las áreas silvestres protegidas del estado como zonas de conservación de la naturaleza: El Parque Nacional Torres del Paine, Región de Magallanes y de la Antártica Chilena

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    M. González

    2013-12-01

    Full Text Available El presente trabajo es una breve descripción del Parque Nacional Torres del Paine, un área protegida localizada en el sur de Chile, que se caracteriza por la presencia de paisajes montañosos de origen glaciar, con una serie de lagos, lagunas, y ríos, los cuales albergan especies endémicas de flora y fauna. Estas características convierten a este parque en uno de los más visitados a nivel nacional. Se discuten aspectos sobre conservación y manejo del parque.

  7. Auteurs affichés, auteurs dissimulés. Le recours aux citations dans le 'Commentaire sur l'Enéide' attribué à Bernard Silvestre

    Directory of Open Access Journals (Sweden)

    Francine Mora

    2017-06-01

    Full Text Available Birger Munk Olsen's works have pointed out the importance of the commentaries in the reception and canonization of the Latin auctores during the twelfth-century Renaissance. In Bonaventure's famous classification, the commentator, who writes both with his own words and with the words of the others, but gives to the second of these the primary position, is lower in rank than the author. He is also dependent on the commentators who wrote before him. However, the study of mentions or quotations of auctores and former commentators in medieval commentaries shows that the latter used their predecessors only in order to expose their own point of view. A good example of this is furnished by the commentary of the Aeneid commonly attributed to Bernardus Silvestris. This article studies its difference of treatment between its two models, Macrobius and Fulgentius – the first is displayed, the second is more concealed –, and also its use of Ovid, whose Metamorphoses are used as early as in the commentary of Book 1, but who is not explicitly claimed as a model.

  8. Enraizamento adventício de estacas do maracujazeiro silvestre Passiflora mucronata Lam.: forma de veiculação e concentrações do ácido indol-3-butírico

    Directory of Open Access Journals (Sweden)

    Rodrigo Sobreira Alexandre

    2014-08-01

    Full Text Available Passiflora mucronata Lam. apresenta como características ser ornamental, medicinal e resistente à bacteriose nas folhas, além de ser altamente resistente à antracnose nos frutos e ramos. Objetivou-se, com este trabalho, avaliar a forma de veiculação, líquida ou sólida, e as concentrações do ácido indol-3-butírico (AIB no enraizamento adventício de estacas de P. mucronata. O experimento foi conduzido no delineamento de blocos ao acaso, em esquema fatorial 2x5 (formas de veiculação do AIB: líquida e sólida x concentrações de AIB: 0; 250; 500; 750 e 1000 mg L-1, se líquido, ou mg Kg-1, se sólido, com quatro repetições, de 16 estacas cada. As características avaliadas foram enraizamento (%, número de raiz, comprimento da maior raiz (cm, volume de raiz (cm³ e massa de matéria seca de raiz (g. Verificou-se que o enraizamento de estacas de P. mucronata Lam. independe da forma como é veiculado o AIB, se sólida ou líquida, porém a qualidade do sistema radicular, avaliada por meio do número, volume e massa de matéria seca de raízes, foi superior à obtida ao se empregar o AIB sólido. O comportamento do enraizamento, do número e do comprimento de raízes foi linear crescente, até a máxima concentração de AIB (1000 mg L-1 ou mg Kg-1.

  9. Mechanisms of metal toxicity in plants

    Czech Academy of Sciences Publication Activity Database

    Küpper, Hendrik; Andresen, Elisa

    2016-01-01

    Roč. 8, č. 3 (2016), s. 269-285 ISSN 1756-5901 Institutional support: RVO:60077344 Keywords : Hyperaccumulator thlaspi-caerulescens * Induced oxidative stress * Iron toxicity Subject RIV: CE - Biochemistry Impact factor: 3.975, year: 2016

  10. DIDÁCTICA DESARROLLADORA: POSICIÓN DESDE EL ENFOQUE HISTÓRICO CULTURAL

    OpenAIRE

    Toruncha, José Zilberstein; Cruz, Silvia Olmedo

    2016-01-01

    ResumenEl trabajo expone una revisión de los fundamentos esenciales de una propuesta denominada Didáctica Desarrolladora, elaborada por docentes e investigadores cubanos en las dos ultimas décadas del pasado siglo (SILVESTRE, 1985; SANTOS,1989; MIEDES, SANTOS; ZILBERSTEIN, 1992; SILVESTRE et al., 1993; SILVESTRE;1999; ZILBERSTEIN, 1997, 2000, 2003b; ZILBERSTEIN; PORTELA;MCPHERSON, 1999; SILVESTRE; ZILBERSTEIN 2000a, 2000b, 2002; LEAL,2000; RICO; SANTOS; MARTÍN-VIAÑA, 2001; CASTELLANOS et al.,...

  11. [Determination of phenylethanoid glycosides in Orobanche coerulescens].

    Science.gov (United States)

    Han, Guo-qing; Li, Cai-feng; Wang, Xiao-qin; Li, Min-hui; Li, Jing

    2015-11-01

    Orobanche caerulescens is an important medicinal resource in Orobanchaceae. The present study aims to establish methods for determination of acteoside, crenatoside, and total phenylethanoid glycosides in O. caerulescens, and determine the content in 15 samples to evaluate the resource utilization of this medicinal plant. The content of acteoside and crenatoside were quantitatively determined by HPLC, while total phenylpropanoid glycosides was estimated by UV-VIS spectrophotometry. According to the results, the content of acteoside was the highest in O. caerulescens, followed by crenatoside. The contents of acteoside, crenatoside, and total phenylethanoid glycosides were between 1.15% - 15.60%, 0.83% - 4.47%, and 6.78% - 27.43%, respectively, which had significant differences. The acquisition time has great influence on the content of main components of O. caerulescens. The content of phenylethanoid glycosides is higher in the samples which were collected at the flowering stage. The two determination methods were proved to be simple, accurate and reliable, and can be used to evaluate the quality and resource utilization of O. caerulescens.

  12. determination of lipophilic extractives in ionic liquid extracts

    African Journals Online (AJOL)

    dell

    Chem. 9: 63-69. Freire CSR, Pinto PCR, Santiago AS,. Silvestre AJD, Evtuquin DV and Neto. CP 2006a Comparative study of lipophilic extractives of hardwoods and corresponding ECF bleached kraft pulps. BioResources. 1: 3-17. Freire CSR, Silvestre AJD and Neto CP. 2005. Lipophilic extractives in. Eucalyptus globulus.

  13. 76 FR 53054 - Safety Zone; TriMet Bridge Project, Willamette River; Portland, OR

    Science.gov (United States)

    2011-08-25

    ... holidays. FOR FURTHER INFORMATION CONTACT: If you have questions on this rule, call or e-mail BM1 Silvestre... 503-240- 9319, e-mail Silvestre[email protected] . If you have questions on viewing the docket, call...

  14. Uso de terreno urbano y rural en Puerto Rico

    Science.gov (United States)

    Sebastian Martinuzzi; William A. Gould; Olga M. Ramos Gonzalez; Maya Quinones; Michael E. Jimenez

    2008-01-01

    El Proyecto de Analisis de Gap de Puerto Rico (PRGAP) (Gould et al. 2008) desarrollo tres usos de terrenos para Puerto Rico: Urbano, Suburbano, y Rural (Martinuzzi et al. 2007). Estas regiones tambien pueden ser consideradas como urbano, densamente-poblado rural, y escasamente-poblado rural, o como urbano y area silvestre con una interfase de area silvestre-urbana. La...

  15. Human population, economic activities, and wild bird conservation in Mexico: factors influencing their relationships at two different geopolitical scales Población humana, actividades económicas y conservación de aves silvestres en México: factores que influencian sus relaciones en dos escalas geopolíticas diferentes

    Directory of Open Access Journals (Sweden)

    Xavier López-Medellín

    2011-12-01

    Full Text Available Population growth poses threats to biodiversity, specifically to sensitive species. Therefore, an understanding of the conflict between biodiversity and human population is needed to enable long-term planning of development and conservation policies by state and federal governments and society based on limitations and potentials of environments. We used a geopolitical approach to analyze data on human demography, economic activities, natural vegetation, avian diversity, and protected areas of the 32 states of Mexico and the 30 districts of the state of Oaxaca. Using factor analysis, we identified the biodiversity-rich geopolitical units that have a large human population and are developing intense economic activities. We then carried out a series of linear regressions between the resulting factors to test whether they were related, suggesting areas where conservation conflicts may exist, and found that relations between human activities and natural resources vary from region to region. These results help us identify geopolitical units that require detailed studies of the interactions between population and natural resources, and also highlight the importance of using geopolitical scales as study units, where most conservation and development policies are determined, to inform local stakeholders and decision makers.El crecimiento humano representa amenazas para la biodiversidad, especialmente para especies sensibles. Se necesita conocer a fondo el conflicto que representa el crecimiento de la población para la biodiversidad y llevar a cabo políticas y acciones a largo plazo de actividades de desarrollo y conservación evaluadas por gobiernos federales y estatales, basándose en las limitaciones y potenciales de los ecosistemas. Utilizamos una aproximación geopolítica para analizar variables de demografía humana, actividades económicas, superficie de vegetación, diversidad de aves y áreas protegidas de los 32 estados de México y los 30 distritos de Oaxaca. Mediante un análisis de factores, identificamos las entidades geopolíticas con más biodiversidad con alta población humana y que desarrollan intensamente actividades económicas. Posteriormente realizamos regresiones lineales entre los factores para analizar su interrelación, lo que sugiere áreas en las que la conservación está amenazada, encontrando que estas relaciones varían en cada región. Estos resultados identifican las unidades geopolíticas que requieren un estudio detallado de la interacción entre población y recursos naturales y resaltan la importancia de utilizar una escala geopolítica, que es el nivel donde se determinan la mayor parte de las políticas de conservación y desarrollo, para proveer información detallada a usuarios y tomadores de decisiones.

  16. Uso de plâncton silvestre, fermento fresco e levedura desidratada na alimentação de larvas do cascudo chinelo, Loricariichthys platymetopon (Isbrüchen & Nijssen, 1979 (Osteichthyes, Loricariidae Natural plankton, fresh ferment and dehydrated yeast utilization at Loricariichthys platymetopon (Isbrüchen & Nijssen, 1979 (Osteichthyes, Loricariidae, cascudo chinelo, fry feeding

    Directory of Open Access Journals (Sweden)

    Claudemir Martins Soares

    2002-05-01

    Full Text Available Objetivando avaliar a utilização de diferentes alimentos para larvas do cascudo chinelo Loricariichthys platymetopon (Osteichthyes, Loricariidae, 240 larvas com cinco dias pós-eclosão foram distribuídas em 20 aquários (12 L. Foram utilizados cinco tratamentos com quatro repetições cada, os quais consistiram do emprego de diferentes tipos de alimentos como: plâncton (P, fermento (F, levedura desidratada (LD e as combinações P+F e P+LD por 15 dias consecutivos. O F e a LD foram fornecidos à vontade três vezes ao dia, enquanto o P foi fornecido pela manhã, após os aquários serem sifonados. Os valores da temperatura, pH, condutividade elétrica e oxigênio dissolvido se mantiveram dentro de níveis aceitáveis para a aquicultura. Os valores de biomassa/aquário das larvas alimentadas com P+LD foram superiores aos dos alimentados com P, F e P+F, entretanto não diferiram daqueles com o uso de LD. As larvas alimentadas com P+LD apresentaram valores de peso final médio superiores às dos demais tratamentos, sendo que F levou a valores de peso final médio inferiores em comparação ao uso de P, LD e P+F. Observou-se menor sobrevivência com o uso de P em comparação a LD e P+LD. Conclui-se que se pode utilizar P+LD na criação do cascudo chinelo em suas fases iniciais de desenvolvimento.Aiming to evaluate different foods effects in the rearing of Loricariichthys platymetopon (Osteichthyes, Loricariidae fry, 240 5-day-after-hatch specimens were distributed in 20 aquarium glasses (12 L. Five treatments, with four repetitions each, were tested, consisting in: plankton (P, fresh ferment (F, dehydrated yeast (DY and the combinations P+F and P+DY, for 15 days. F and DY were given ad libitum three times a day, and P only in the morning, after the aquariums siphoning. Temperature, pH, electric conductivity and dissolved oxygen were in levels acceptable for fish. The fry biomass per aquarium values were higher for the P + DY treatment, when compared to P, F and P+F, but equal to DY. Also, P +DY-fed fry showed higher mean final weight than all the other treatments. F-treated fry showed mean final weight lower than the ones treated with P, DY and P+F. The P treatment showed lower survival rate than DY and P+DY. The results indicate that P + DY can be used for Loricariichthys platymetopon fry rearing during their initial development phases.

  17. Levantamento da fauna de abelhas silvestres na "zona da mata" de Minas Gerais: III. Mata secundária na região de Viçosa (Hymenoptera, Apoidea Survey of the wild bees of the "zona da mata" of Minas Gerais, Brazil: III. Secondary forest in Viçosa region (Hymenoptera, Apoidea

    Directory of Open Access Journals (Sweden)

    José Ricardo Cure

    1992-01-01

    Full Text Available The outcome of a wild bee fauna survey in a secondary forest is reported. Sampling was carried out mainly on herbaceous and shrubby vegetation under and at the border of the forest. Results are compared with data collected with the same methodology from a previously surveyed grassland nearby. The secondary forest was richer in Anthophoridae and Apidae species, and less diverse in Megachilidae. Similarity between the two habitats was low. Several unidentified species of Ceratinula, Trichocerapis mirabilis and the stingless bees Melipona bicolor, M. quadrifasciata, M. marginata, Paratrigona subnuda, Scaptotrigona tubiba and S. xanthotricha, are among the species dependent on the forest environment to survive. Bee population densities in the forest understory are as large as the largest values found for open vegetation in Southeastern Brazil; species richness is also comparable to those of other areas in Southeastern Brazil. Sampling strategies are discussed.

  18. Mamíferos silvestres de la Reserva Ecológica del Pedregal de San Ángel en Ciudad Universitaria, Universidad Nacional Autónoma de México, México, D. F. Wild mammals of Reserva Ecológica del Pedregal de San Ángel, Ciudad Universitaria, UNAM, Mexico, D.F.

    Directory of Open Access Journals (Sweden)

    Yolanda Hortelano-Moncada

    2009-08-01

    Full Text Available Se realizó un inventario de las especies de mamíferos que habitan en la Reserva Ecológica del Pedregal de San Ángel (REPSA. Los datos se obtuvieron a partir de registros de colecciones científicas, de recolectas recientes en el área y de consultas en literatura especializada. Los resultados comprenden 628 registros acumulados desde 1943 y corresponden a 33 especies, agrupadas en 28 géneros, 15 familias y 6 órdenes de mamíferos. La ardilla gris (Sciurus aureogaster nigrescens y el ratón del altiplano (Peromyscus melanophrys melanophrys se registran por primera vez para la REPSA; asimismo, existen 2 registros que están publicados pero no listados en los inventarios previos a la reserva, el murciélago colorado, Lasiurus blossevillii teliotis, y el cuinique, Spermophilus adocetus adocetus; en las categorías de riesgo se encuentran como amenazadas 2 especies y 1 en la de protección especial, y hay 7 endémicas de México. La Reserva es uno de los últimos reductos de material genético de especies cuya localidad tipo se encuentra en la cuenca de México. El componente mastofaunístico de la zona es importante para el mantenimiento de la biodiversidad, por lo que el estudio y la protección de este ecosistema al interior de la ciudad de México debe continuarse.This paper documents the mammals from the Reserva Ecológica del Pedregal de San Ángel. Data were gathered from records in mammal collections, the specialized literature, and through collecting efforts in the area. Records spanning 1943 to the present document the presence of 33 species, 28 genera, 15 families, and 6 orders of mammals. One squirrel and one mouse (Sciurus aureogaster nigrescens, and Peromyscus m. melanophrys are reported for the first time for the reserve. Two addtional records have been previously published but have not been included in previous inventories for the reserve: the red bat, Lasiurus blossevillii teliotis and the cuinique, Spermophilus adocetus adocetus. Two species are currently listed under the risk category of threatened, 1 is under special protection, and 7 are endemic to Mexico. This mammal component is important for the ecosystem of the area and the conservation of biodiversity. The richness of mammals of the area deserves efforts to conserve and preserve the biodiversity of this unique ecosystem within México City.

  19. CaracterizaÃÃo estrutural das formas silvestre e recombinante de uma lectina de sementes de Vatairea macrocarpa Benth e anÃlise das suas bases moleculares de ligaÃÃo ao antÃgeno Tn

    OpenAIRE

    Bruno Lopes de Sousa

    2014-01-01

    As lectinas consitem em uma classe diversificada de proteÃnas, capazes de reconhecer estruturas glicÃdicas de forma reversÃvel e com alta especificidade, no entanto sem alterar suas estruturas quÃmicas, participando de vÃrios processos celulares importantes. Dentre as diferentes famÃlias de lectinas, as isoladas a partir de leguminosas sÃo as mais extensivamente estudadas, havendo sido relatada a influÃncias dessas molÃculas sobre diversos processos patolÃgicos, incluindo a carcinogÃnese. Not...

  20. A list of mosquito species of the Brazilian State of Pernambuco, including the first report of Haemagogus janthinomys (Diptera: Culicidae, yellow fever vector and 14 other species (Diptera: Culicidae Lista de espécies de mosquitos do Estado de Pernambuco e primeiro relato de Haemagogus janthinomys (Diptera: Culicidae vetor de febre amarela silvestre e outras 14 espécies (Diptera: Culicidae

    Directory of Open Access Journals (Sweden)

    Nádia Consuelo Aragão

    2010-08-01

    Full Text Available INTRODUCTION: Besides mosquito species adapted to urban environments (Culex quinquefasciatus, Aedes aegypti and Aedes albopictus, only 15 species of Anopheles had been recorded in the State of Pernambuco. METHODS: Human-landing mosquitoes were collected in Dois Irmãos Park, in Recife. RESULTS: The first report for the state of Haemagogus janthinomys, an important vector of yellow fever virus, and 14 other species, including Trichoprosopon lampropus, a first reported for Brazil. CONCLUSIONS: The mosquito fauna in the area is diversified and has potential medical and veterinary importance.INTRODUÇÃO: Além de mosquitos adaptados ao ambiente urbano (Culex quinquefasciatus, Aedes aegypti e Ae. albopictus, apenas 15 espécies de Anopheles haviam sido relatadas no Estado de Pernambuco. MÉTODOS: Mosquitos que pousavam em humanos no Parque Dois Irmãos, em Recife foram coletados. RESULTADOS: Haemagogus janthinomys, importante vetor de vírus de febre amarela, e outras 14 espécies são relatadas pela primeira vez no estado, incluindo Trichoprosopon lampropus, relatado pela primeira vez no Brasil. CONCLUSÕES: A fauna de mosquitos na área é muito diversificada e tem potencial importância médica e veterinária.

  1. Mamíferos silvestres de la Reserva Ecológica del Pedregal de San Ángel en Ciudad Universitaria, Universidad Nacional Autónoma de México, México, D. F. Wild mammals of Reserva Ecológica del Pedregal de San Ángel, Ciudad Universitaria, UNAM, Mexico, D.F.

    OpenAIRE

    Yolanda Hortelano-Moncada; Fernando A. Cervantes; Aída Trejo-Ortiz

    2009-01-01

    Se realizó un inventario de las especies de mamíferos que habitan en la Reserva Ecológica del Pedregal de San Ángel (REPSA). Los datos se obtuvieron a partir de registros de colecciones científicas, de recolectas recientes en el área y de consultas en literatura especializada. Los resultados comprenden 628 registros acumulados desde 1943 y corresponden a 33 especies, agrupadas en 28 géneros, 15 familias y 6 órdenes de mamíferos. La ardilla gris (Sciurus aureogaster nigrescens) y el ratón del ...

  2. Removal new alternative to chemical and mechanical removal for the study of pollen carried on the wild bee scopae Remoción química como nueva alternativa a la remoción mecánica para el estudio del polen transportado en las escopas de abejas silvestres

    Directory of Open Access Journals (Sweden)

    Marta Caccavari

    2010-12-01

    Full Text Available Taxonomic recognition and quantification of the different pollen types collected by bees offer the most direct method to study the diet. To determine the importance of each plant taxon, it is necessary to separate the pollen deposited only in the collecting structures in order to minimize contamination of grains collected passively in other parts of the body. The technique currently applied is based on the mechanical removal of the pollen loads with dissecting needles and repeated washings with ethanol. Metathoracic scopae that underwent this procedure showed traces of pollen in varying amounts when observed under the microscope. As an alternative to this technique chemical removal using HOK is proposed. The leg is removed and treated separatedly to avoid contamination. The deflocculant properties of HOK successfully allowed to separate the pollen adhered to the scopae, which can be then returned to the individual, unaffected by the procedure. Suspend the pollen in a know quantity of mounting fluid permit take the subsamples and determine the total number of pollen grains of each taxon. In this paper, the new technique is presented and its effectiveness is compared to the technique currenty used.El reconocimiento taxonómico y la cuantificación de los distintos tipos polínicos colectados por las abejas ofrecen el método más directo para estudiar la dieta. Para determinar la importancia de cada taxón vegetal y minimizar la contaminación, es necesario separar el polen depositado en las estructuras de colecta, de los granos recolectados en forma pasiva en otras partes del cuerpo. La técnica que se aplica hasta el momento se basa en la remoción mecánica de las cargas polínicas con agujas de disección y sucesivos lavados con etanol. Escopas de patas metatoráxicas sometidas a este procedimiento al ser observadas bajo lupa presentaban aún granos de polen en cantidades variables. Como una alternativa a esta técnica proponemos la remoción química, mediante la utilización de HOK. La pata se extrae y es tratada por separado para impedir la contaminación. Las propiedades defloculantes del HOK permiten separar exitosamente el polen adherido a la escopa, la cual puede ser devuelta al ejemplar al no ser afectada por el procedimiento. Suspender todo el contenido de polen en un volumen de medio de montaje conocido y luego tomar una submuestra, permite determinar el número total de granos de polen de cada taxón. En este trabajo se presenta la nueva técnica y se compara su efectividad con la técnica utilizada hasta el momento.

  3. Estudos sôbre reservatórios e vectores silvestres do Trypanosoma cruzi. XXIV. Variação dos dados biométricos obtidos em amostras do T. cruzi isolados de casos humanos da Doença de Chagas

    Directory of Open Access Journals (Sweden)

    Francisco Ferriolli Filho

    1968-02-01

    Full Text Available Estudo biométrico de 10 amostras de Trypanosoma cruzi isoladas de casos humanos da doença de CHAGAS, nove mantidas em camundongos brancos jovens e uma mantida em ratos brancos jovens, mostrou a existência de grandes variações amostrais. Assim os valores do comprimento total médio das diferentes amostras variaram entre 16,3μ e 21,8μ., enquanto os valores do índice nuclear médio oscilaram entre 0,93 e 1,52. Êstes resultados ampliam os limites de variações amostrais até agora observadas no T. cruzi, especialmente os que se referem ao índice nuclear médio.

  4. Free and total testosterone levels in field males of Octodon degus (Rodentia, Octodontidae: accuracy of the hormonal regulation of behavior Niveles de testosterona libre y totales en machos silvestres de Octodon degus (Rodentia, Octodontidae: exactitud de la regulación hormonal del comportamiento

    Directory of Open Access Journals (Sweden)

    MAURICIO SOTO- GAMBOA

    2005-06-01

    Full Text Available Animals exhibit continuous seasonal changes in physiological, morphological and behavioral traits associated to their natural annual cycles. One of the most important changes in the organism occurs at the initiation of breeding season. In males these changes include activation of spermatogenesis, enhance of sexual secondary characters and an increase of aggressiveness. All of theses changes are basically regulated by testosterone, but the physiological basis of this testosterone regulation and the effective hormone proportion that acts in target tissues are unknown. In this work I evaluated the relationship between total testosterone, free testosterone associated to aggressive behavior in wild males of Octodon degus. I compared hormonal levels and aggressive behavior during pre, middle and post breeding periods. Results showed that behavioral aggressiveness was correlated with both total and free testosterone in June, during the beginning of breeding season, but not at other times. Results also indicated a lack of relationship between free and total testosterone in most of breeding period. I discuss the importance of this behavior-hormonal regulation (determined by free testosterone and the physiological importance of this mechanism to the organismLos animales presentan variaciones estacionales continuas que incluyen cambios fisiológicos, morfológicos y conductuales, asociados al ciclo anual. Estos cambios generalmente están activados por factores endógenos o exógenos, pero son regulados por el sistema endocrino de organismo. Uno de los cambios más importantes ocurre en el inicio del periodo reproductivo. Durante este periodo los machos presentan cambios asociados a la producción de esperatozoides, exacerbación de caracteres sexuales secundarios y un aumento de la agresividad. Todos estos cambios son regulados en parte por los niveles de testosterona, sin embargo, los mecanismos fisiológicos de esta regulación son desconocidos. En este trabajo evalué la relación que existe entre los niveles de testosterona libre y totales, y examiné su posible asociación con los niveles de agresividad en machos de una población natural de Octodon degus. Mis resultados indicaron que la agresividad se correlaciona directamente con los niveles de testosterona libre y totales solo durante el mes de junio, al inicio del periodo reproductivo, pero no durante el resto del ciclo reproductivo de esta especie. Esto indicaría que la agresividad solo se correlaciona con los niveles de testosterona libre ya que en el medio y el final del periodo reproductivo los niveles de testosterona se mantienen altos sin que se manifiesten dichas conductas. Finalmente, discuto la importancia de la regulación fina de la conducta determinada por la testosterona libre y la importancia fisiológica de este mecanismo de regulación dentro del organismo

  5. Clinical signs suggestive of mange infestation in a free-ranging maned wolf (Chrysocyon brachyurus) in the Moxos Savannahs of Beni, Bolivia

    OpenAIRE

    Díaz Luque, José A; Müller, Helen; González, Lyliam; Berkunsky, Igor

    2014-01-01

    La sarna sarcóptica es generalmente endémica de las poblaciones de cánidos silvestres. Algunos agentes de enfermedades infecciosas y parasitarias han sido reportados para el borochi (Chrysocyon brachyurus) en estado silvestre. Este trabajo documenta el avistaje de un borochi silvestre en el departamento del Beni, Bolivia, con signos clínicos que sugieren infestación por sarna sarcóptica. La amenaza constante de transmisión de sarna proveniente de perros domésticos así como de otras especies d...

  6. Lead, zinc and cadmium accumulation from two metalliferous soils with contrasting calcium contents in hyperaccumulating and non-hyperaccumulating metallophytes: a comparative study.

    NARCIS (Netherlands)

    Mohtadi, A.; Ghaderian, S.M.; Schat, H.

    2012-01-01

    Aims and background: We previously compared metallicolous (M) and non-metallicolous (NM) populations of Noccaea (=Thlaspi) caerulescens, Silene vulgaris, and Matthiola flavida for their abilities to tolerate and (hyper)-accumulate lead (Pb) in hydroponics. In the present study we aimed 1) to check

  7. Zinc accumulation and distribution over tissues in Noccaea сaerulescens in nature and in hydroponics : a comparison

    NARCIS (Netherlands)

    Kozhevnikova, Anna D.; Seregin, I. V.; Gosti, F.; Schat, H.

    2017-01-01

    Aims: Zinc distribution at the tissue level is studied almost exclusively in lab-grown plants. It is essential to establish to what extent the patterns observed in lab-grown plants are corresponding with those in nature. To this end, we compared Zn localization in Noccaea caerulescens growing in its

  8. Feasilbility of phytoextraction to remediate cadmium and zinc contaminated soils

    NARCIS (Netherlands)

    Koopmans, G.F.; Romkens, P.F.A.M.; Fokkema, M.J.; Song, J.; Luo, Y.M.; Japenga, J.; Zhao, F.J.

    2008-01-01

    A Cd and Zn contaminated soil was mixed and equilibrated with an uncontaminated, but otherwise similar soil to establish a gradient in soil contamination levels. Growth of Thlaspi caerulescens (Ganges ecotype) significantly decreased the metal concentrations in soil solution. Plant uptake of Cd and

  9. Feasibility of phytoextraction to remediate cadmium and zinc contaminated soils

    NARCIS (Netherlands)

    Koopmans, G.F.; Romkens, P.F.A.M.; Fokkema, M.J.; Song, J.; Luo, Y.; Japenga, J.; Zhao, F.J.

    2008-01-01

    A Cd and Zn contaminated soil was mixed and equilibrated with an uncontaminated, but otherwise similar soil to establish a gradient in soil contamination levels. Growth of Thlaspi caerulescens (Ganges ecotype) significantly decreased the metal concentrations in soil solution. Plant uptake of Cd and

  10. Mathematical modeling tendencies in plant pathology

    African Journals Online (AJOL)

    STORAGESEVER

    2009-12-29

    Dec 29, 2009 ... inclusion of new terms into the model as needed. (Madden, 2006). ... the first programs was the EPIDEM written by Wagonner and Horsfall (1969) and it ..... Oyama K (1998). Los parientes silvestres del chile (Capsicum spp.).

  11. Ethno-ornithology and conservation of wild birds in the semi-arid Caatinga of northeastern Brazil

    Science.gov (United States)

    2013-01-01

    The utilization of birds as pets has been recognized as one of the principal threats to global avifauna. Most of the information about the use and sale of birds as pets has been limited to areas of high biodiversity and whose impacts of anthropic actions have been widely broadcast internationally, for example for the Amazon Forest and forest remnants of Southeast Asia. The Caatinga predominates in the semi-arid region of Brazil, and is one of the semi-arid biomes with the greatest biological diversity in the world, where 511 species of birds exist. Many of these birds are used as pets, a common practice in the region, which has important conservationist implications but has been little studied. Therefore, the aim of the present study was to detail aspects of the use of birds as pets in a locality in the semi-arid region of Northeast Brazil. Information on the use of avifauna was obtained through interviews and visits to the homes of 78 wild bird keepers. A total of 41 species of birds were recorded, mostly of the families Emberizidae (n = 9 species), Columbidae (n = 7 species), Icteridae (n = 6 species) and Psittacidae (n = 3 species). The birds that were most often recorded were Paroaria dominicana (n = 79 especimens), Sporophila albogularis (n = 67), Aratinga cactorum (n = 49), Sporophila lineola (n = 36), Sicalis flaveola (n = 29) and Sporophila nigricollis (n = 27). The use of wild birds in the area studied, as an example of what occurs in other places in the semi-arid Northeast, demonstrates that such activities persist in the region, in spite of being illegal, and have been happening in clandestine or semi-clandestine manner. No statistically significant correlation were found between socioeconomic factors and keeping birds as pets reflects the cultural importance of this practice of rearing wild birds for pets in the region, which is widespread among the local population, independent of socioeconomic factors. Obviously

  12. Cadmium toxicity induced contrasting patterns of concentrations of free sarcosine, specific amino acids and selected microelements in two Noccaea species.

    Science.gov (United States)

    Zemanová, Veronika; Pavlík, Milan; Pavlíková, Daniela

    2017-01-01

    Cadmium (Cd) toxicity affects numerous metabolic processes in plants. In the presence of Cd, plants accumulate specific amino acids which may be beneficial to developing Cd tolerance. Our study aimed to characterize the changes in the metabolism of selected free amino acids that are associated with Cd tolerance, and investigate the levels of selected microelements in order to relate these changes to the adaptation strategies of two metallophytes-Noccaea caerulescens (Redlschlag, Austria) and Noccaea praecox (Mežica, Slovenia). The plants were exposed to Cd contamination (90 mg Cd/kg soil) for 120 days in a pot experiment. Our results showed higher Cd accumulation in N. praecox compared to N. caerulescens. Cadmium contamination reduced the zinc and nickel levels in both species and a mixed effect was determined for copper and manganese content. Differences in free amino acid metabolism were observed between the two metallophytes growing under Cd-free and Cd-loaded conditions. Under Cd-free conditions, aromatic amino acids (phenylalanine, tryptophan and tyrosine) and branched-chain amino acids (leucine, isoleucine and valine) were accumulated more in the leaves of N. praecox than in N. caerulescens. Cd stress increased the content of these amino acids in both species but this increase was significant only in N. caerulescens leaves. Marked differences in the responses of the two species to Cd stress were shown for alanine, phenylalanine, threonine and sarcosine. Cadmium contamination also induced an increase of threonine as alanine and sarcosine decrease, which was larger in N. caerulescens than in N. praecox. All these factors contribute to the higher adaptation of N. praecox to Cd stress.

  13. Developing European conservation and mitigation tools for pollination services: approaches of the STEP (Status and Trends of European Pollinators) project

    OpenAIRE

    Potts, Simon G.; Biesmeijer, Jacobus C.; Bommarco, Riccardo; Felicioli, Antonio; Fischer, Markus; Jokinen, Pekka; Kleijn, David; Klein, Alexandra-Maria; Kunin, William E.; Neumann, Peter; Penev, Lyubomir D.; Petanidou, Theodora; Rasmont, Pierre; Roberts, Stuart P. M.; Smith, Henrik G.

    2011-01-01

    [ES] Los insectos polinizadores forman un componente clave de la biodiversidad europea, y proporcionan servicios vitales a los ecosistemas de plantas cultivadas y silvestres. Existe una creciente evidencia del declive de polinizadores silvestres y domesticados, y del declive paralelo de las plantas que dependen de ellos. El proyecto STEP (Estado y tendencias de los polinizadores europeos, 2010-2015, www.step-project.net) está documentando elementos críticos en la naturaleza y la extensión de ...

  14. Diversidad de Triatominae (Hemiptera: Reduviidae en Santander, Colombia: implicaciones epidemiológicas

    Directory of Open Access Journals (Sweden)

    Lyda Esteban

    2017-01-01

    Conclusiones. Los resultados evidenciaron diferencias en la diversidad de las dos regiones, además del potencial de las especies silvestres para ocupar ecótopos artificiales. La intrusión de triatominos y la reciente incriminación de especies silvestres en la transmisión de Trypanosoma cruzi, indican la necesidad de un mayor conocimiento de la ecología de estos vectores para orientar las estrategias de control.

  15. Aves endêmicas e ameaçadas de extinção da Estação Ecológica de Xitué e a contribuição do taquaruçu Guadua tagoara (Nees Kunth para a riqueza local. Endemic and threatened birds of the Xitué Ecological Station and the contribution of the bamboo Guadua tagoara (Nees Kunth to local richness.

    Directory of Open Access Journals (Sweden)

    Alexsander Zamorano ANTUNES

    2007-12-01

    Full Text Available O contínuo ecológico da Serra deParanapiacaba, no sul do Estado de São Paulo,é uma área de extrema importância para aconservação das aves. Dentro do contínuo, a EstaçãoEcológica de Xitué é a Unidade de Conservaçãocuja avifauna é menos conhecida. Em levantamentoefetuado em 2006 foram registradas em Xitué48 espécies endêmicas da Mata Atlântica e 8ameaçadas de extinção. Apesar de ser a espécievegetal dominante em vastos trechos da estação,o taquaruçu Guadua tagoara (Nees Kunth parececontribuir pouco para a riqueza de espécies de avesencontradas. No entanto, entre estas espécies seencontra o criticamente ameaçado papa-capim-dataquaraSporophila falcirostris, granívoroespecializado em sementes de taquaras.The Paranapiacaba Range ecologicalcontinuum, in State of São Paulo southernBrazil, is an extremely important area to birdconservation. In Paranapiacaba Range the birds ofXitué Ecological Station remains poorly known.We surveyed the Xitué birds in 2006 and we found48 Atlantic Forest endemics species and 8 threatened.Although the bamboo Guadua tagoara (NeesKunth dominate many areas of Xitué, it contributedtoo little for bird richness. However, between thesebird species was the critically endangered Temminck’sSeedeater Sporophila falcirostris, specializedbamboo granivorous.

  16. Chemical composition of oils from wild almond (Prunus scoparia and wild pistachio (Pistacia atlantica

    Directory of Open Access Journals (Sweden)

    Jafari Mohammadi, S. A.

    2013-03-01

    Full Text Available The aim of this study was to determine the fatty acids, sterols and triacylglycerol compositions as well as the amount of tocopherols, total phenols and pigments wild almond and cold pressed wild pistachio oils. Triacylglycerols, tocopherols and pigments were analyzed with HPLC, fatty acids and sterols with gas chromatography, and total phenols photometrically. The main fatty acids in both samples were oleic, linoleic and palmitic acids. The most predominant TAG species are SLL + PLO (21.83% in wild pistachio oil and OOO (47.27% in wild almond oil. Pheophytin a was the major pigment in wild pistachio oil. There were no pigments detected in wild almond oil. Total phenols were 57.6 mg kg-1 oil for wild pistachio and 45.3 mg kg-1 oil for wild almond oil.El objetivo de este estudio fue determinar la composición en ácidos grasos, esteroles, triglicéridos, así como tocoferoles, fenoles totales y pigmentos de aceites de almendras y pistachos silvestres prensados en frío. Triglicéridos (TAG, tocoferoles y pigmentos se analizaron mediante HPLC, los ácidos grasos y esteroles mediante cromatografía de gases, y los fenoles totales espectrofotométricamente. Los principales ácidos grasos de ambas especies fueron los ácidos oleico, linoleico y palmítico. Las especies de TAG predominantes son SLL + OLP (21,83% en el pistacho silvestre y OOO (47,27% en almendras silvestre. Feofitina a es un pigmento importante en los aceites de pistacho silvestre. No se detectó pigmentos en los aceites de almendras silvestres. Los fenoles totales fueron 57,6 mg kg-1 y 45,3 mg kg-1 en los aceites de pistacho silvestre y de almendra silvestre respectivamente.

  17. La integración y legitimidad de los derechos culturales e históricos del Pueblo Malecu, en la figura de un comanejo sostenible de los recursos naturales y culturales para la conservación y restauración integral del refugio de vida silvestre caño negro cuenca y territorios del Río Frío

    OpenAIRE

    Cornejo Venegas, Elvis

    2014-01-01

    El presente estudio representa: La promoción y trabajo concerniente al desarrollo con autogestión de recursos ambientales culturales, al acceso en Comanejo intercomunitario de los recursos naturales en un Área protegida de conservación como lo es Caño Negro y la legitimación jurídica participativa de las comunidades; en este caso especifico del Cantón de Upala, Los Chiles Caño Negro y del Cantón de Guatuso y los Palenques de Sol, Margarita y Tonjibe que forman la Reserva (Ley 6172), territ...

  18. Aspectos ecológicos da tripanossomíase americana: XIV - Persistência e potencial de domiciliação de populações triatomínicas silvestres em região de intensa atividade agropecuária Ecological aspects of South American tripanosomiasis: XIV - Persistence and domiciliation potential of sylvatic triatominae populations in an intensive agricultural and cattle breeding region

    Directory of Open Access Journals (Sweden)

    Oswaldo Paulo Forattini

    1979-06-01

    Full Text Available São apresentados os resultados de observações sobre populações triatomínicas extradomiciliares em região de intensa atividade agropecuária. Os restos de vegetação primitiva, embora reduzidos a menos de 8,0%, mostraram-se suficientes para manter essas populações. Pelo menos para Triatoma sordida, a destruição progressiva parece favorecer sua sobrevivência, graças à multiplicação de ecótopos preferidos por esse triatomíneo. Tanto essa espécie como Panstrongylus megistus e Rhodnius neglectus mostraram-se aptos à colonização em ecótopos artificiais representados por galinheiros experimentais.The results of observation of sylvatic triatominae population in a region of intensive agricultural and cattle breeding activity are reported. Important environmental changes had occurred in the area, including destruction of the primitive vegetation and intensive use of pesticides. Nevertheless, these modifications apparently did not affect the survival of Triatominae, since they were found in the remaining vegetation. Moreover, this destruction seems to have favored, to some extent, survival of Triatoma sordida by increasing the available ecotopes. This species, as well as Panstrongylus megistus and Rhodnius neglectus, showed enough ecological valence to colonize experimental fowes houses, used as artificial ecotopes.

  19. Identification of Glucosinolates in Seeds of Three Brassicaceae Species Known to Hyperaccumulate Heavy Metals.

    Science.gov (United States)

    Montaut, Sabine; Guido, Benjamin S; Grison, Claude; Rollin, Patrick

    2017-03-01

    Plants from the Brassicaceae family are known to contain secondary metabolites called glucosinolates. Our goal was to establish by LC/MS the glucosinolate profile of seeds of three Brassicaceae species known to hyperaccumulate heavy metals. We investigated Alyssum fallacinum auct. non Hausskn., Iberis intermedia Guers., and Noccaea caerulescens (J. Presl & C. Presl) F. K. Mey. Our results indicate that A. fallacinum seeds contain glucoiberin and glucoibervirin, which had not been previously identified in this plant. Furthermore, we report for the first time the presence of glucoiberin, glucoibervirin, glucotropaeolin, and sinigrin in I. intermedia. We have detected for the first time glucoconringiin in N. caerulescens. In addition, glucosinalbin, 4-hydroxyglucobrassicin, and glucomoringin were also detected. © 2017 Wiley-VHCA AG, Zurich, Switzerland.

  20. Feasibility of phytoextraction to remediate cadmium and zinc contaminated soils.

    Science.gov (United States)

    Koopmans, G F; Römkens, P F A M; Fokkema, M J; Song, J; Luo, Y M; Japenga, J; Zhao, F J

    2008-12-01

    A Cd and Zn contaminated soil was mixed and equilibrated with an uncontaminated, but otherwise similar soil to establish a gradient in soil contamination levels. Growth of Thlaspi caerulescens (Ganges ecotype) significantly decreased the metal concentrations in soil solution. Plant uptake of Cd and Zn exceeded the decrease of the soluble metal concentrations by several orders of magnitude. Hence, desorption of metals must have occurred to maintain the soil solution concentrations. A coupled regression model was developed to describe the transfer of metals from soil to solution and plant shoots. This model was applied to estimate the phytoextraction duration required to decrease the soil Cd concentration from 10 to 0.5 mg kg(-1). A biomass production of 1 and 5 t dm ha(-1) yr(-1) yields a duration of 42 and 11 yr, respectively. Successful phytoextraction operations based on T. caerulescens require an increased biomass production.

  1. Study on Seed Morphogenesis of Orobanchaceae in Taiwan

    Directory of Open Access Journals (Sweden)

    Jao-Shien Chen

    2011-11-01

    Full Text Available Seed morphogenesis of Orobanchaceae was not completely investigated previously. Here, we observed seed development of Orobanchaceous species in Taiwan using light and scanning electron microscopies. Results indicated that seeds of Aeginetia indica, Boschniakia himalaica, and Orobanche caerulescens all consisted of embryo, endosperm and testa. Ontogeny of the embryo in A. indica was Solanad type, while in both B. himalaica and O. caerulescens was Onagrad type. The mature embryos of the three species lacked embryonic organs, and their endosperm development was the cellular type and, at maturity, appeared as several cell layers of storage tissue. Ontogeny of the testa was all non-multiplicative, with the residues of the outermost cell layer and reticulately-thickened secondary walls of its cells at maturity. Mature seeds of A. indica and O. caerulescens were ovate whereas those of B. himalaica were oblate. As for Christisonia hookeri, due to lack of samples, only the cellular-typed endosperm was determined. The comparative development of Orobanchaceous seeds was discussed.

  2. Wild common bean in the Central Valley of Costa Rica: ecological distribution and molecular characterization

    Directory of Open Access Journals (Sweden)

    Rosa In\\u00E9s Gonz\\u00E1lez Torres

    2004-01-01

    Full Text Available Frijol silvestre en el Valle Central de Costa Rica: distribución ecológica y caracterización molecular. Este trabajo presenta una actualización sobre la distribución de las formas silvestres de fríjol común en Costa Rica, su ecología y su caracterización molecular. Ala fecha 22 poblaciones fueron encontradas en cuatro cuencas alrededor del Valle Central, generalmente en vegetaciones ruderales (frecuentemente bordes de cafetales, con estatuto de conservación variable (desde protegido a amenazado. Su caracterización molecular indica su pertenencia al acervo genético mesoamericano. Varios marcadores indican una variabilidad aumentada en las formas silvestres y permiten inferir la presencia de un fenómeno de flujo genético e introgresión desde materiales cultivados.

  3. Atualização/revisão do sistema de gestão de qualidade e sistema HACCP na fabrica, Foodstore e postos de venda

    OpenAIRE

    Paiva, Ana Filipa Teodoro

    2017-01-01

    Resumo O estágio profissionalizante desenvolvido na Fábrica de Pastelaria e Confeitaria S. Silvestre, Lda. encontra-se integrado no plano curricular do Mestrado em Engenharia Alimentar leccionado pela ESAC, tendo decorrido entre 1 de Março e 1 de Setembro de 2017. A Fábrica de Pastelaria e Confeitaria S. Silvestre, Lda. dedica-se à produção e distribuição de produtos de pastelaria e padaria, bem como à exploração de um restaurante, o Foodstore. Para além destas duas unidades apresenta ai...

  4. Folleto informativo sobre fauna y flora para la autopreparación de los inspectores aduanales

    OpenAIRE

    María Teresa Oviedo Pérez; Ángela M. Fernández Serrano

    2010-01-01

    La Convención sobre el Comercio Internacional de Especies Amenazadas de Fauna y Flora Silvestres, firmada en Washington el 3 de marzo de 1973, de la que la República de Cuba es parte desde el 19 de julio de 1990, establece los requisitos para la importación, la exportación, la reexportación y la introducción de las especies, partes o derivados de la fauna y la flora silvestres, amenazadas o en peligro de extinción y las Resoluciones adoptadas p...

  5. A Liouville Problem for the Stationary Fractional Navier-Stokes-Poisson System

    Science.gov (United States)

    Wang, Y.; Xiao, J.

    2017-06-01

    This paper deals with a Liouville problem for the stationary fractional Navier-Stokes-Poisson system whose special case k=0 covers the compressible and incompressible time-independent fractional Navier-Stokes systems in R^{N≥2} . An essential difficulty raises from the fractional Laplacian, which is a non-local operator and thus makes the local analysis unsuitable. To overcome the difficulty, we utilize a recently-introduced extension-method in Wang and Xiao (Commun Contemp Math 18(6):1650019, 2016) which develops Caffarelli-Silvestre's technique in Caffarelli and Silvestre (Commun Partial Diff Equ 32:1245-1260, 2007).

  6. Assesment of chemical and morphological variation of Spanish Marjoram: Spanish Sage and Spike Lavender

    OpenAIRE

    Méndez Tovar, Inés Rosa

    2015-01-01

    El presente estudio se llevó a cabo para apoyar al sector agronómico y superar los problemas actuales del mercado de las plantas aromáticas y medicinales (PAM). El problema principal se debe a que las PAM se han recolectado tradicionalmente de forma silvestre. La recolección silvestre no permite la recogida de material vegetal de alta calidad y produce la deforestación, amenazando las especies recolectadas. Hay que añadir que exi...

  7. Análise da predação de Puma concolor em rebanhos domésticos na região do Parque Nacional de São Joaquim e entorno, SC, Brasil

    OpenAIRE

    Luiz Guilherme Marins de Sá

    2005-01-01

    A predação de rebanhos domésticos por predadores silvestres é o conflito mais intenso entre seres humanos e animais silvestres por causa do prejuízo econômico. A solução encontrada pelos fazendeiros é o abate do predador, causa principal de mortalidade destes animais ao redor do mundo. Para compreender melhor as variáveis ambientais relacionadas a este conflito na região do Parque Nacional de São Joaquim, SC, Brasil, e entorno, foram visitadas propriedades que registraram a presença de leões-...

  8. Identification of organic acids in Cichorium intybus inhibiting virulence-related properties of oral pathogenic bacteria

    NARCIS (Netherlands)

    Papetti, A.; Mascherpa, D.; Carazzone, C.; Stauder, M.; Spratt, D.A.; Wilson, M.; Pratten, J.; Ciric, L.; Lingström, P.; Zaura, E.; Weiss, E.; Ofek, I.; Signoretto, C.; Pruzzo, C.; Gazzani, G.

    2013-01-01

    The low molecular mass (LMM) extract of Cichorium intybus var. silvestre (red chicory) has been shown to inhibit virulence-linked properties of oral pathogens including Streptococcus mutans, Actinomyces naeslundii and Prevotella intermedia. In the present study HPLC-DAD-ESI/MS2 was used to

  9. CITES aplicació en fauna salvatge i clínica d'animals exótics /

    OpenAIRE

    Ticó Gil, Gemma.

    2011-01-01

    CITES: Convention on International Trade in Endangered Species of Wild Fauna and Flora = Conveni sobre el Comerç Internacional d’Espècies Amenaçades de Fauna i Flora Silvestre. Treball presentat a l'assignatura de Deontologia i Veterinària Legal (21223)

  10. Actualización de la distribución geográfica y ecoepidemiología de la fauna de triatominos (Reduviidae: Triatominae en Colombia

    Directory of Open Access Journals (Sweden)

    Felipe Guhl

    2007-01-01

    Se resalta la importancia de la vigilancia entomológica como herramienta indispensable para reforzar las estrategias de control de la transmisión de la enfermedad de Chagas, permitiendo también la evaluación del riesgo que representan las especies de triatominos silvestres en Colombia.

  11. Twenty Years of French "Didactique" Viewed from the United States

    Science.gov (United States)

    Kilpatrick, Jeremy

    2003-01-01

    One cannot begin considering the topic of this colloquium without asking, why twenty years? Why not two hundred? Two hundred years ago, Silvestre Franois Lacroix was about to be named chief officer of the Commission Executive de L'Instruction Publique. Out of that experience, together with his long career in instruction, especially as professor of…

  12. First New World Primate Papillomavirus Identification in the Atlantic Forest, Brazil: Alouatta guariba papillomavirus 1.

    Science.gov (United States)

    Silvestre, Rodrigo Vellasco Duarte; de Souza, Alex Junior Souza; Júnior, Edivaldo Costa Sousa; Silva, Allan Kaio; de Mello, Wyller Alencar; Nunes, Marcio Roberto T; Júnior, João Lídio S G V; Cardoso, Jedson Ferreira; de Vasconcelos, Janaina Mota; de Oliveira, Layanna Freitas; da Silva, Sandro Patroca; da Silva, Adriana Marques J; Fries, Brigida Gomes; Summa, Maria Eugênia L; de Sá, Lilian Rose M

    2016-08-18

    We report here the complete genome sequence of the first papillomavirus detected in a New World primate, howler monkey, Alouatta guariba clamitans papillomavirus 1 (AgPV1), from the Atlantic Forest in São Paulo State, Brazil. Copyright © 2016 Silvestre et al.

  13. Test of a chromomagnetic model for hadron mass differences

    Science.gov (United States)

    Lichtenberg, D. B.; Roncaglia, R.

    1993-05-01

    An oversimplified model consisting of the QCD color-magnetic interaction has been used previously by Silvestre-Brac and others to compare the masses of exotic and normal hadrons. We show that the model can give qualitatively wrong answers when applied to systems of normal hadrons.

  14. Exploring the Regional Distribution of Tourism and the Extent to Which There Is Convergence

    DEFF Research Database (Denmark)

    Mérida, Adrián L.; Carmona, Mónica; Congregado, Emilio

    2016-01-01

    proposed by Carrion-i-Silvestre et al. (2005). Finally, the hypothesis of club convergence (Philips and Sul, 2007) is also tested. The results point to absence of full convergence even when controlling for structural breaks while three different clubs of convergence are found. We discuss potential policy...

  15. Diquarks in rotating baryons

    International Nuclear Information System (INIS)

    Martin, A.

    1989-01-01

    This paper shows that the minimum energy three-quark classical configuration for a given angular momentum and linear two-body potentials between the quarks is a quark-diquark system. The authors deduce from this that baryons at large angular momentum have a quark-diquark structure. Explicit calculations by Flack, Richard and Silvestre-Brac show this effect

  16. H.R. 4015, Jobs for Veterans Act. Hearing before the Subcommittee on Benefits of the Committee on Veterans' Affairs, House of Representatives. One Hundred Seventh Congress, Second Session (April 18, 2002).

    Science.gov (United States)

    Congress of the U.S., Washington, DC. House Committee on Veterans' Affairs.

    This hearing provides the statements from the following individuals: Chairman Simpson; Hon. Silvestre Reyes; Hon. Ander Crenshaw; and Hon. Lane Evans (prepared statement of). This document also includes statements from over 10 wittinesses and contains an article, bill, chart, and statement submitted for the record relating to this hearing.…

  17. Test of a chromomagnetic model for hadron mass differences

    International Nuclear Information System (INIS)

    Lichtenberg, D.B.; Roncaglia, R.

    1993-01-01

    An oversimplified model consisting of the QCD color-magnetic interaction has been used previously by Silvestre-Brac and others to compare the masses of exotic and normal hadrons. We show that the model can give qualitatively wrong answers when applied to systems of normal hadrons

  18. Notes on the Cactaceae of Curaçao, Aruba, Bonaire and North Venezuela

    NARCIS (Netherlands)

    Wagenaar Hummelinck, P.

    1938-01-01

    La flora de cactos de las islas situadas entre Trinidad y la península de La Goajira comprende trece especies silvestres, aparte del género Melocactus: Pereskia Guamacho, Opuntia caribaea, O. curassavica, O. Wentiana, O. elatior, Rhipsalis cassutha, Hylocereus Lemairei, Acanthocereus pentagonus,

  19. Ontology supported system for searching evidence of wild animals trafficking in social network posts

    Directory of Open Access Journals (Sweden)

    Rafael da Silva Carrasco

    2014-04-01

    Full Text Available O comércio ilegal de animais silvestres é uma das atividades criminais mais lucrativas da atualidade. No Brasil, a grande variedade de fauna nativa tem alimentado o mercado ilegal, o que gera sérias implicações ambientais e sociais. A luta contra o comércio ilegal de animais silvestres é crucial para ajudar a proteger os recursos naturais e evitar a disseminação de outras formas de crime. Esse tipo de comércio ilegal usa cada vez mais, a internet para realizar suas atividades. A fim de combater tal crime, um sistema automático de monitorização é essencial. No entanto, para realizar essa tarefa de forma eficaz, o sistema deve ser capaz de analisar as mensagens trocadas durante essa prática. Para isso, é necessário o conhecimento dos conceitos e relações que ocorrem nesse domínio. Este artigo apresenta um sistema multiagente apoiado por ontologia de domínio e frames semânticos para buscar evidências de comércio ilegal de animais silvestres. No artigo, é mostrado como o sistema pode ser usado na tarefa de rastreamento do comércio ilegal de animais silvestres, além de apresentar os resultados da aplicação do sistema em um pequeno corpus.

  20. Aroideas comestibles de San José de Suaita (Suaita, Santander, Colombia

    Directory of Open Access Journals (Sweden)

    Irene López Cardozo

    2005-01-01

    encuentran cultivadas en las labranzas (áreas de cultivo o escapadas de cultivo, en los alrededores de las viviendas y las veredas. La especie Dracontium spruceanum se encuentra exclusivamente en estado silvestre y se restringe a la zona de La Meseta.

  1. Birds of two protected areas in the southern range of the Brazilian Araucaria forest

    Directory of Open Access Journals (Sweden)

    Ismael Franz

    2014-01-01

    Full Text Available Over 70% of threatened birds in the state of Rio Grande do Sul, south Brazil, inhabit forest environments. The creation and maintenance of protected areas is one of the most important measures aiming to mitigate these problems. However, the knowledge of the local biodiversity is essential so that these areas can effectively preserve the natural resources. Between 2004 and 2009 we sampled the avifauna in two conservation units in Rio Grande do Sul: Floresta Nacional de Canela (FNC and Parque Natural Municipal da Ronda (PMR, both representative of the Mixed Humid Forest (Araucaria Forest. A total of 224 species was recorded, 116 at FNC and 201 at PMR, ten of which threatened regionally: Pseudastur polionotus, Odontophorus capueira, Patagioenas cayennensis, Amazona pretrei, A. vinacea, Triclaria malachitacea, Campephilus robustus, Grallaria varia, Procnias nudicollis and Sporophila melanogaster. Richness and species composition seem to be related to different stages of forest conservation, to size and connectivity, as well as to the diversity of environments. The better conservation of PMR compared to FNC, allied to its geographic position, results in a richer avifauna, with a larger amount of rare and endangered species, as well as species sensitive to disturbance and endemic to the Atlantic Rainforest. We suggest management actions aiming the conservation and the long-term recovery of natural environments at these sites.

  2. Diversity, abundance and conservation of birds in an agroecosystem in the Ica desert, Peru

    Directory of Open Access Journals (Sweden)

    Letty Salinas

    2013-05-01

    Full Text Available Present work investigates the impact of the agricultural activity in the Peruvian coast on the biodiversity of birds. The study includes the monitoring of birds in asparagus and grapes farms of Ica valley, from January-2004 to January-2006. We evaluated eight types of habitats distributed in a total of 1288 has. Throughout the period of study we registered 93 species of birds. The abundance, richness and diversity were greater in the summers. The greater abundance happened in the habitats of land of asparagus, river brushwood and live fences. The greater richness and diversity happened in January-2006 in alfalfa cultures with huarangos and live fences. The most abundant species were the residents, as Zenaida meloda (6,6 ind./it has, Pygochelidon cyanoleuca (5,9 and the migratory Hirundo rustica (5,9. We registered 12 migratory species. From the conservationist point of view, the number of species catalogued in some degree of threat, at national and international level, is very high. We can emphasize the vulnerable Xenospingus concolor, the Peruvian endemic Colaptes atricollis and the species of desert Geositta peruviana, Sporophila simplex and Burhinus superciliaris. This study demonstrates the importance of agroecosystems in the conservation of the Peruvian Coastal Desert biodiversity, in particular if the enterprise carries out a policy of respect to environment.

  3. Phytoextraction of metals from soils: How far from practice?

    International Nuclear Information System (INIS)

    Nevel, Lotte van; Mertens, Jan; Oorts, Koen; Verheyen, Kris

    2007-01-01

    For most trace elements, the technique of phytoextraction needs significant improvements to become practically feasible. Calculations for Cd revealed that the amount of Cd taken up by Thlaspi caerulescens or Salix spp. needs at least to be the double of the present amount to slightly decrease the Cd concentration in the upper 0.5 m of the soil within a period of 10 years. Additionally, metals taken up by the plants might pose an important risk. Alternatives as bioavailable contaminant stripping and phytostabilization might be more appropriate. - Phytoextraction efficiency should be improved and associated risks need more attention before phytoextraction can be established as a commercial technology

  4. Phytoextraction of metals from soils: How far from practice?

    Energy Technology Data Exchange (ETDEWEB)

    Nevel, Lotte van [Laboratory of Forestry, Department of Forest and Water Management, Ghent University, Geraardsbergsesteenweg 267, B-9090 Melle (Belgium)], E-mail: lotte.vannevel@ugent.be; Mertens, Jan [Laboratory of Forestry, Department of Forest and Water Management, Ghent University, Geraardsbergsesteenweg 267, B-9090 Melle (Belgium); Oorts, Koen [European Center for Risk Assessment Euras, Kortrijksesteenweg 302, B-9000 Ghent (Belgium); Verheyen, Kris [Laboratory of Forestry, Department of Forest and Water Management, Ghent University, Geraardsbergsesteenweg 267, B-9090 Melle (Belgium)

    2007-11-15

    For most trace elements, the technique of phytoextraction needs significant improvements to become practically feasible. Calculations for Cd revealed that the amount of Cd taken up by Thlaspi caerulescens or Salix spp. needs at least to be the double of the present amount to slightly decrease the Cd concentration in the upper 0.5 m of the soil within a period of 10 years. Additionally, metals taken up by the plants might pose an important risk. Alternatives as bioavailable contaminant stripping and phytostabilization might be more appropriate. - Phytoextraction efficiency should be improved and associated risks need more attention before phytoextraction can be established as a commercial technology.

  5. What to eat now? Shifts in polar bear diet during the ice-free season in western Hudson Bay

    Science.gov (United States)

    Gormezano, Linda J; Rockwell, Robert F

    2013-01-01

    Under current climate trends, spring ice breakup in Hudson Bay is advancing rapidly, leaving polar bears (Ursus maritimus) less time to hunt seals during the spring when they accumulate the majority of their annual fat reserves. For this reason, foods that polar bears consume during the ice-free season may become increasingly important in alleviating nutritional stress from lost seal hunting opportunities. Defining how the terrestrial diet might have changed since the onset of rapid climate change is an important step in understanding how polar bears may be reacting to climate change. We characterized the current terrestrial diet of polar bears in western Hudson Bay by evaluating the contents of passively sampled scat and comparing it to a similar study conducted 40 years ago. While the two terrestrial diets broadly overlap, polar bears currently appear to be exploiting increasingly abundant resources such as caribou (Rangifer tarandus) and snow geese (Chen caerulescens caerulescens) and newly available resources such as eggs. This opportunistic shift is similar to the diet mixing strategy common among other Arctic predators and bear species. We discuss whether the observed diet shift is solely a response to a nutritional stress or is an expression of plastic foraging behavior. PMID:24223286

  6. Avian cholera in waterfowl: the role of lesser snow and Ross's geese as carriers of avian cholera in the Playa Lakes region

    Science.gov (United States)

    Samuel, M.D.; Shadduck, D.J.; Goldberg, Diana R.; Johnson, W.P.

    2005-01-01

    We collected samples from apparently healthy geese in the Playa Lakes Region (USA) during the winters of 2000a??01 and 2001a??02 to determine whether carriers of Pasteurella multocida, the bacterium that causes avian cholera, were present in wild populations. With the use of methods developed in laboratory challenge trials (Samuel et al., 2003a) and a serotype-specific polymerase chain reaction method for identification of P. multocida serotype 1, we found that a small proportion of 322 wild birds (cholera infection. Our results confirm the hypothesis that wild waterfowl are carriers of avian cholera and add support for the hypothesis that wild birds are a reservoir for this disease. In concert with other research, this work indicates that enzootic infection with avian cholera occurs in lesser snow goose (Chen caerulescens caerulescens) populations throughout their annual cycle. Although fewer Rossa??s geese (Chen rossii) were sampled, we also found these birds were carriers of P. multocida. Even in the absence of disease outbreaks, serologic evidence indicates that chronic disease transmission and recent infection are apparently occurring year-round in these highly gregarious birds and that a small portion of these populations are potential carriers with active infection.

  7. Feasibility of phytoextraction to remediate cadmium and zinc contaminated soils

    International Nuclear Information System (INIS)

    Koopmans, G.F.; Roemkens, P.F.A.M.; Fokkema, M.J.; Song, J.; Luo, Y.M.; Japenga, J.; Zhao, F.J.

    2008-01-01

    A Cd and Zn contaminated soil was mixed and equilibrated with an uncontaminated, but otherwise similar soil to establish a gradient in soil contamination levels. Growth of Thlaspi caerulescens (Ganges ecotype) significantly decreased the metal concentrations in soil solution. Plant uptake of Cd and Zn exceeded the decrease of the soluble metal concentrations by several orders of magnitude. Hence, desorption of metals must have occurred to maintain the soil solution concentrations. A coupled regression model was developed to describe the transfer of metals from soil to solution and plant shoots. This model was applied to estimate the phytoextraction duration required to decrease the soil Cd concentration from 10 to 0.5 mg kg -1 . A biomass production of 1 and 5 t dm ha -1 yr -1 yields a duration of 42 and 11 yr, respectively. Successful phytoextraction operations based on T. caerulescens require an increased biomass production. - An experimental method is presented to be used to estimate the phytoextraction duration of a metal contaminated soil

  8. Genetic differentiation between sympatric and allopatric wintering populations of Snow Geese

    Science.gov (United States)

    Humphries, E.M.; Peters, J.L.; Jonsson, J.E.; Stone, R.; Afton, A.D.; Omland, K.E.

    2009-01-01

    Blackwater National Wildlife Refuge on the Delmarva Peninsula, Maryland, USA has been the wintering area of a small population of Lesser Snow Geese (Chen caerulescens caerulescens; LSGO) since the 1930s. Snow Geese primarily pair in wintering areas and gene flow could be restricted between this and other LSGO wintering populations. Winter pair formation also could facilitate interbreeding with sympatric but morphologically differentiated Greater Snow Geese (C. c. atlantica; GSGO).We sequenced 658 bp of the mitochondrial DNA control region for 68 Snow Geese from East Coast and Louisiana wintering populations to examine the level of genetic differentiation among populations and subspecies. We found no evidence for genetic differentiation between LSGO populations but, consistent with morphological differences, LSGO and GSGO were significantly differentiated. We also found a lack of genetic differentiation between different LSGO morphotypes from Louisiana. We examined available banding data and found the breeding range of Delmarva LSGO overlaps extensively with LSGO that winter in Louisiana, and documented movements between wintering populations. Our results suggest the Delmarva population of LSGO is not a unique population unit apart from Mid-Continent Snow Geese. ?? 2009 by the Wilson Ornithological Society.

  9. Evidence of Territoriality and Species Interactions from Spatial Point-Pattern Analyses of Subarctic-Nesting Geese

    Science.gov (United States)

    Reiter, Matthew E.; Andersen, David E.

    2013-01-01

    Quantifying spatial patterns of bird nests and nest fate provides insights into processes influencing a species’ distribution. At Cape Churchill, Manitoba, Canada, recent declines in breeding Eastern Prairie Population Canada geese (Branta canadensis interior) has coincided with increasing populations of nesting lesser snow geese (Chen caerulescens caerulescens) and Ross’s geese (Chen rossii). We conducted a spatial analysis of point patterns using Canada goose nest locations and nest fate, and lesser snow goose nest locations at two study areas in northern Manitoba with different densities and temporal durations of sympatric nesting Canada and lesser snow geese. Specifically, we assessed (1) whether Canada geese exhibited territoriality and at what scale and nest density; and (2) whether spatial patterns of Canada goose nest fate were associated with the density of nesting lesser snow geese as predicted by the protective-association hypothesis. Between 2001 and 2007, our data suggest that Canada geese were territorial at the scale of nearest neighbors, but were aggregated when considering overall density of conspecifics at slightly broader spatial scales. The spatial distribution of nest fates indicated that lesser snow goose nest proximity and density likely influence Canada goose nest fate. Our analyses of spatial point patterns suggested that continued changes in the distribution and abundance of breeding lesser snow geese on the Hudson Bay Lowlands may have impacts on the reproductive performance of Canada geese, and subsequently the spatial distribution of Canada goose nests. PMID:24312520

  10. Contribution to the knowledge of Saprinus Erichson, 1834 of forensic relevance from Lebanon (Coleoptera, Histeridae)

    Science.gov (United States)

    Shayya, Salman; Dégallier, Nicolas; Nel, André; Azar, Dany; Lackner, Tomáš

    2018-01-01

    Abstract Many histerid beetles are necrophilous on carrion during both active and advanced stages of decomposition. In this study, 13 species of Saprinus were recorded on carrion from Lebanon, containing eight that are new for the Lebanese fauna. The following Saprinus species are newly recorded from Lebanon: 1) Saprinus (S.) caerulescens caerulescens (Hoffmann, 1803); 2) S. (S.) calatravensis Fuente, 1899; 3) S. (S.) chalcites (Illiger, 1807); 4) S. (S.) godet (Brullé, 1832); 5) S. (S.) maculatus (P. Rossi, 1792); 6) S. (S.) strigil Marseul, 1855; 7) S. (S.) submarginatus J. Sahlberg, 1913; and 8) S. (S.) tenuistrius sparsutus Solsky, 1876. The peak activity was recorded, key for the species is provided, and habitus images and male genitalia are illustrated in order to facilitate their taxonomic identifications. Saprinus species are diverse and common on animal carcass; they were likewise collected from a human cadaver in Lebanon. Preliminary comments on biology and distribution of the studied species are given. Our paper represents the first faunistic study on Histeridae from Lebanon. A rigorous research program regarding the biology of Saprinus in Lebanon and the neighbouring countries would greatly improve the knowledge of the diversity, activity, and possible forensic value of Saprinus. PMID:29670426

  11. Intercontinental gene flow among western arctic populations of Lesser Snow Geese

    Science.gov (United States)

    Shorey, Rainy I.; Scribner, Kim T.; Kanefsky, Jeannette; Samuel, Michael D.; Libants, Scot V.

    2011-01-01

    Quantifying the spatial genetic structure of highly vagile species of birds is important in predicting their degree of population demographic and genetic independence during changing environmental conditions, and in assessing their abundance and distribution. In the western Arctic, Lesser Snow Geese (Chen caerulescens caerulescens) provide an example useful for evaluating spatial population genetic structure and the relative contribution of male and female philopatry to breeding and wintering locales. We analyzed biparentally inherited microsatellite loci and maternally inherited mtDNA sequences from geese breeding at Wrangel Island (Russia) and Banks Island (Canada) to estimate gene flow among populations whose geographic overlap during breeding and winter differ. Significant differences in the frequencies of mtDNA haplotypes contrast with the homogeneity of allele frequencies for microsatellite loci. Coalescence simulations revealed high variability and asymmetry between males and females in rates and direction of gene flow between populations. Our results highlight the importance of wintering areas to demographic independence and spatial genetic structure of these populations. Male-mediated gene flow among the populations on northern Wrangel Island, southern Wrangel Island, and Banks Island has been substantial. A high rate of female-mediated gene flow from southern Wrangel Island to Banks Island suggests that population exchange can be achieved when populations winter in a common area. Conversely, when birds from different breeding populations do not share a common wintering area, the probability of population exchange is likely to be dramatically reduced.

  12. Interactions between plant and rhizosphere microbial communities in a metalliferous soil

    International Nuclear Information System (INIS)

    Epelde, Lur; Becerril, Jose M.; Barrutia, Oihana; Gonzalez-Oreja, Jose A.; Garbisu, Carlos

    2010-01-01

    In the present work, the relationships between plant consortia, consisting of 1-4 metallicolous pseudometallophytes with different metal-tolerance strategies (Thlaspi caerulescens: hyperaccumulator; Jasione montana: accumulator; Rumex acetosa: indicator; Festuca rubra: excluder), and their rhizosphere microbial communities were studied in a mine soil polluted with high levels of Cd, Pb and Zn. Physiological response and phytoremediation potential of the studied pseudometallophytes were also investigated. The studied metallicolous populations are tolerant to metal pollution and offer potential for the development of phytoextraction and phytostabilization technologies. T. caerulescens appears very tolerant to metal stress and most suitable for metal phytoextraction; the other three species enhance soil functionality. Soil microbial properties had a stronger effect on plant biomass rather than the other way around (35.2% versus 14.9%). An ecological understanding of how contaminants, ecosystem functions and biological communities interact in the long-term is needed for proper management of these fragile metalliferous ecosystems. - Rhizosphere microbial communities in highly polluted mine soils are determinant for the growth of pseudometallophytes.

  13. Feasibility of phytoextraction to remediate cadmium and zinc contaminated soils

    Energy Technology Data Exchange (ETDEWEB)

    Koopmans, G.F. [Department of Soil Quality, Wageningen University, Wageningen University and Research Centre (WUR), P.O. Box 47, 6700 AA, Wageningen (Netherlands)], E-mail: gerwin.koopmans@wur.nl; Roemkens, P.F.A.M.; Fokkema, M.J. [Alterra, WUR, P.O. Box 47, 6700 AA, Wageningen (Netherlands); Song, J.; Luo, Y.M. [Soil and Environmental Bioremediation Research Centre, Institute of Soil Science, Chinese Academy of Sciences, Nanjing 210008 (China); Japenga, J. [Alterra, WUR, P.O. Box 47, 6700 AA, Wageningen (Netherlands); Zhao, F.J. [Soil Science Department, Rothamsted Research, Harpenden, Herts AL5 2JQ (United Kingdom)

    2008-12-15

    A Cd and Zn contaminated soil was mixed and equilibrated with an uncontaminated, but otherwise similar soil to establish a gradient in soil contamination levels. Growth of Thlaspi caerulescens (Ganges ecotype) significantly decreased the metal concentrations in soil solution. Plant uptake of Cd and Zn exceeded the decrease of the soluble metal concentrations by several orders of magnitude. Hence, desorption of metals must have occurred to maintain the soil solution concentrations. A coupled regression model was developed to describe the transfer of metals from soil to solution and plant shoots. This model was applied to estimate the phytoextraction duration required to decrease the soil Cd concentration from 10 to 0.5 mg kg{sup -1}. A biomass production of 1 and 5 t dm ha{sup -1} yr{sup -1} yields a duration of 42 and 11 yr, respectively. Successful phytoextraction operations based on T. caerulescens require an increased biomass production. - An experimental method is presented to be used to estimate the phytoextraction duration of a metal contaminated soil.

  14. Forage digestibility and intake by lesser snow geese: effects of dominance and resource heterogeneity

    Science.gov (United States)

    Hupp, Jerry W.; White, Robert G.; Sedinger, James S.; Robertson, Donna G.

    1996-01-01

    We measured forage intake, digestibility, and retention time for 11 free-ranging, human-imprinted lesser snow geese (Chen caerulescens caerulescens) as they consumed underground stembases of tall cotton-grass (Eriophorum angustifolium) on an arctic staging area in northeastern Alaska. Geese fed in small patches (x̄=21.5 m2) of forage that made up ≤3% of the study area and consisted of high-quality “aquatic graminoid” and intermediate-quality “wet sedge” vegetation types. Dominant geese spent more time feeding in aquatic graminoid areas (r=0.61), but less total time feeding and more time resting than subdominant geese. Subdominant geese were displaced to areas of wet sedge where cotton-grass was a smaller proportion of underground biomass. Geese metabolized an average of 48% of the organic matter in stembases and there was a positive correlation between dominance and organic matter metabolizability (r=0.61). Total mean retention time of forage was 1.37 h and dry matter intake was 14.3 g/h. Snow geese that stage on the coastal plain of the Beaufort Sea likely use an extensive area because they consume a large mass of forage and exploit habitats that are patchily distributed and make up a small percentage of the landscape. Individual variation in nutrient absorption may result from agonistic interactions in an environment where resources are heterogeneously distributed.

  15. Changes in abundance and spatial distribution of geese molting near Teshekpuk Lake, Alaska: Interspecific competition or ecological change?

    Science.gov (United States)

    Flint, P.L.; Mallek, E.J.; King, R.J.; Schmutz, J.A.; Bollinger, K.S.; Derksen, D.V.

    2008-01-01

    Goose populations molting in the Teshekpuk Lake Special Area of the National Petroleum Reserve-Alaska have changed in size and distribution over the past 30 years. Black brant (Branta bernicla nigricans) are relatively stable in numbers but are shifting from large, inland lakes to salt marshes. Concurrently, populations of greater white-fronted geese (Anser albifrons frontalis) have increased seven fold. Populations of Canada geese (Branta canadensis and/or B. hutchinsii) are stable with little indication of distributional shifts. The lesser snow goose (Anser caerulescens caerulescens) population is proportionally small, but increasing rapidly. Coastline erosion of the Beaufort Sea has altered tundra habitats by allowing saltwater intrusion, which has resulted in shifts in composition of forage plant species. We propose two alternative hypotheses for the observed shift in black brant distribution. Ecological change may have altered optimal foraging habitats for molting birds, or alternatively, interspecific competition between black brant and greater white-fronted geese may be excluding black brant from preferred habitats. Regardless of the causative mechanism, the observed shifts in species distributions are an important consideration for future resource planning. ?? 2007 Springer-Verlag.

  16. Ecological and physiological factors affecting brood patch area and prolactin levels in arctic-nesting geese

    Science.gov (United States)

    Jonsson, J.E.; Afton, A.D.; Alisauskas, R.T.; Bluhm, C.K.; El Halawani, M.E.

    2006-01-01

    We investigated effects of ecological and physiological factors on brood patch area and prolactin levels in free-ranging Lesser Snow Geese (Chen caerulescens caerulescens; hereafter “Snow Geese”) and Ross's Geese (C. rossii). On the basis of the body-size hypothesis, we predicted that the relationships between prolactin levels, brood patch area, and body condition would be stronger in Ross's Geese than in the larger Snow Geese. We found that brood patch area was positively related to clutch volume and inversely related to prolactin levels in Ross's Geese, but not in Snow Geese. Nest size, nest habitat, and first egg date did not affect brood patch area in either species. Prolactin levels increased as incubation progressed in female Snow Geese, but this relationship was not significant in Ross's Geese. Prolactin levels and body condition (as indexed by size-adjusted body mass) were inversely related in Ross's Geese, but not in Snow Geese. Our findings are consistent with the prediction that relationships between prolactin levels, brood patch area, and body condition are relatively stronger in Ross's Geese, because they mobilize endogenous reserves at faster rates than Snow Geese.

  17. Interactions between plant and rhizosphere microbial communities in a metalliferous soil

    Energy Technology Data Exchange (ETDEWEB)

    Epelde, Lur [NEIKER-Tecnalia, Department of Ecosystems, c/Berreaga 1, E-48160 Derio (Spain); Becerril, Jose M.; Barrutia, Oihana [Department of Plant Biology and Ecology, University of the Basque Country, UPV/EHU, P.O. Box 644, E-48080 Bilbao (Spain); Gonzalez-Oreja, Jose A. [NEIKER-Tecnalia, Department of Ecosystems, c/Berreaga 1, E-48160 Derio (Spain); Garbisu, Carlos, E-mail: cgarbisu@neiker.ne [NEIKER-Tecnalia, Department of Ecosystems, c/Berreaga 1, E-48160 Derio (Spain)

    2010-05-15

    In the present work, the relationships between plant consortia, consisting of 1-4 metallicolous pseudometallophytes with different metal-tolerance strategies (Thlaspi caerulescens: hyperaccumulator; Jasione montana: accumulator; Rumex acetosa: indicator; Festuca rubra: excluder), and their rhizosphere microbial communities were studied in a mine soil polluted with high levels of Cd, Pb and Zn. Physiological response and phytoremediation potential of the studied pseudometallophytes were also investigated. The studied metallicolous populations are tolerant to metal pollution and offer potential for the development of phytoextraction and phytostabilization technologies. T. caerulescens appears very tolerant to metal stress and most suitable for metal phytoextraction; the other three species enhance soil functionality. Soil microbial properties had a stronger effect on plant biomass rather than the other way around (35.2% versus 14.9%). An ecological understanding of how contaminants, ecosystem functions and biological communities interact in the long-term is needed for proper management of these fragile metalliferous ecosystems. - Rhizosphere microbial communities in highly polluted mine soils are determinant for the growth of pseudometallophytes.

  18. Influência de hábitos antrópicos na dispersão de Triatoma pseudomaculata Corrêa & Espínola, 1964, através de Mimosa tenuiflora (Willdenow (Mimosaceae no Estado do Ceará, Brasil

    Directory of Open Access Journals (Sweden)

    Freitas Simone Patrícia Carneiro

    2004-01-01

    Full Text Available Triatoma pseudomaculata foram capturados em entrecascas de Mimosa tenuiflora (jurema-preta em ecótopo silvestre de sete municípios do Estado do Ceará. Esta planta apresenta alta taxa de cobertura geográfica nas áreas de caatingas, sendo freqüentemente utilizada pela população rural. A presença de triatomíneos no peridomicílio, na região do Cariri, pode estar associada ao uso pela população da madeira de M. tenuiflora, quando trazida do ambiente silvestre, repleta de triatomíneos, facilitando conseqüentemente sua mobilização e dispersão.

  19. Fauna de Culicidae em municípios da zona rural do estado do Amazonas, com incidência de febre amarela

    Directory of Open Access Journals (Sweden)

    Fé Nelson Ferreira

    2003-01-01

    Full Text Available Em 1996, foi realizado um levantamento da fauna de Culicidae (coleta de adultos e imaturos em cinco dos dez municípios onde foram registrados 14 casos de febre amarela silvestre (Rio Preto da Eva, Iranduba, Manacapuru, Manaquiri e Careiro. Os mosquitos foram coletados utilizando-se armadilhas de luz CDC, inspeções domiciliares e captura com tubos coletores para isca humana. Foram identificadas entre adultos e imaturos 36 espécies de Culicidae, entre estas, nove foram encontradas apenas na fase imatura. Dentre os adultos, coletou-se espécies de Haemagogus janthinomys, Ha. leucocelaenus e Aedes fulvus, incluídas entre os vetores de febre amarela silvestre.

  20. Epidemiologia da doença de Chagas no Ceará VIII - estudo da infecção de animais por T. cruzi no município de Morada Nova

    Directory of Open Access Journals (Sweden)

    J. E. Alencar

    1977-02-01

    Full Text Available Foram examinados 1.368 mamíferos em ecótopos naturais ou artificiais: 443 cães com 2,5% positivos; 605 gatos com 0,7%, 65 roedores domésticos com 4,6%, 6 coelhos e 10 cobaias negativos. Dentre os animais silvestres, foram examinados 115 preás (Galea s. spixii com 2,3% positivos, 12 "cassacos" (Didelphis azarae dos quais 9 positivos; 5 quirópteros, 5 punáres (Cercomys c. laurentius e 3 pebas (Dasypus sexcinctus negativos. A amostra apresentada é suficiente para considerada a existência de ciclos doméstico e silvestre de T. cruzi na área estudada e considerada endêmica da Doença de Chagas.

  1. Estado de la diversidad de la flora vascular de los Pantanos de Villa (Lima - Perú

    Directory of Open Access Journals (Sweden)

    Dámaso W. Ramirez

    2011-05-01

    Full Text Available Se presentan los resultados del estudio de la flora vascular de los Pantanos de Villa realizadas en el 2007 y se analiza los cambios florísticos en los últimos años. Se registraron 47 especies silvestres comprendidas en 43 géneros y 27 familias. Las familias con mayor numero de especies fueron Poaceae (7, Cyperaceae (4 y Asteraceae (4. Se reportan 7 especies silvestres como nuevos registros para el humedal: Alternanthera pubiflora, Alternanthera halimifolia, Limnobium laevigatum, Colocasia esculenta, Rumex obtusifolius, Elodea potamogeton, Plantago major. Se encontraron 11 especies cultivadas en el ecosistema. En comparación con estudios anteriores, los resultados muestran una disminución en la riqueza florística, principalmente de las especies acuáticas. El análisis de similitud con anteriores estudios indica un cambio en la composición de la flora en el tiempo.

  2. Amblyomma dissimile (Acari: Ixodidae PARÁSITO DE Boa constrictor EN COLOMBIA

    Directory of Open Access Journals (Sweden)

    Ana Torres M

    2009-08-01

    Full Text Available Objetivo. Describir algunas garrapatas encontradas en dos ejemplares de Boa constrictor, llevados al Centro de Atención y Valoración de Fauna Silvestre en Montería, Córdoba, Colombia. Materiales y métodos. Se recolectaron 37 garrapatas provenientes de dos individuos adultos de Boa constrictor, los parásitos fueron conservados en alcohol al 70% y posteriormente identificados mediante diversas claves taxonómicas. Resultados. Todas las garrapatas fueron identificadas como Amblyomma dissimile, de las cuales, 9 fueron hembras, 24 machos y 4 ninfas. Conclusiones. La identificación de ectoparásitos en especies de Boa c. constrictor contribuye a mantener adecuadamente esta especie en cautiverio y provee datos para establecer medidas profilácticas y tratamiento, igualmente, ayuda en el conocimiento de los agentes parasitarios de la fauna silvestre.

  3. Energy prices, multiple structural breaks, and efficient market hypothesis

    Energy Technology Data Exchange (ETDEWEB)

    Lee, Chien-Chiang; Lee, Jun-De [Department of Applied Economics, National Chung Hsing University, Taichung (China)

    2009-04-15

    This paper investigates the efficient market hypothesis using total energy price and four kinds of various disaggregated energy prices - coal, oil, gas, and electricity - for OECD countries over the period 1978-2006. We employ a highly flexible panel data stationarity test of Carrion-i-Silvestre et al. [Carrion-i-Silvestre JL, Del Barrio-Castro T, Lopez-Bazo E. Breaking the panels: an application to GDP per capita. J Econometrics 2005;8:159-75], which incorporates multiple shifts in level and slope, thereby controlling for cross-sectional dependence through bootstrap methods. Overwhelming evidence in favor of the broken stationarity hypothesis is found, implying that energy prices are not characterized by an efficient market. Thus, it shows the presence of profitable arbitrage opportunities among energy prices. The estimated breaks are meaningful and coincide with the most critical events which affected the energy prices. (author)

  4. Diferença no tamanho de cascas de ovos de colônias de Panstrongylus megistus

    Directory of Open Access Journals (Sweden)

    Rosa João A da

    2003-01-01

    Full Text Available O objetivo do estudo foi avaliar as mensurações de cascas de ovos de duas colônias laboratoriais e uma silvestre de P. megistus. De cada uma das colônias, 50 cascas de ovos foram mensuradas por meio de microscópio estereoscópico e sistema de análise de imagem QWin. A análise estatística foi efetuada utilizando o teste t-Student, não pareado no programa INSTAT. A largura, o comprimento e o diâmetro da abertura opercular das cascas de ovos de uma colônia silvestre foram maiores que de duas colônias laboratoriais de P. megistus.

  5. Energy prices, multiple structural breaks, and efficient market hypothesis

    International Nuclear Information System (INIS)

    Lee, Chien-Chiang; Lee, Jun-De

    2009-01-01

    This paper investigates the efficient market hypothesis using total energy price and four kinds of various disaggregated energy prices - coal, oil, gas, and electricity - for OECD countries over the period 1978-2006. We employ a highly flexible panel data stationarity test of Carrion-i-Silvestre et al. [Carrion-i-Silvestre JL, Del Barrio-Castro T, Lopez-Bazo E. Breaking the panels: an application to GDP per capita. J Econometrics 2005;8:159-75], which incorporates multiple shifts in level and slope, thereby controlling for cross-sectional dependence through bootstrap methods. Overwhelming evidence in favor of the broken stationarity hypothesis is found, implying that energy prices are not characterized by an efficient market. Thus, it shows the presence of profitable arbitrage opportunities among energy prices. The estimated breaks are meaningful and coincide with the most critical events which affected the energy prices. (author)

  6. Aspectos críticos do controle da febre amarela no Brasil Aspectos críticos del control de la fiebre amarilla en Brasil Critical aspects of yellow fever control in Brazil

    Directory of Open Access Journals (Sweden)

    Pedro Luiz Tauil

    2010-06-01

    Full Text Available São apresentados aspectos epidemiológicos e do controle da febre amarela no Brasil, considerando os ciclos de transmissão silvestre e urbano. Sem registros de transmissão no Brasil desde 1942, houve casos de febre amarela urbana em 2008 no Paraguai, depois de mais de 50 anos sem essa ocorrência nas Américas. A redução do número dos casos silvestres e a manutenção da eliminação dos casos urbanos são os dois principais objetivos do controle da febre amarela no Brasil. Embora haja consenso quanto às medidas que devem ser tomadas nas áreas endêmicas para a forma silvestre, isso não ocorre em relação às áreas infestadas pelo Aedes aegypti. São discutidos argumentos favoráveis e contrários à expansão da área de vacinação. Há necessidade de estudos ambientais e entomológicos para o reconhecimento de áreas receptivas para transmissão silvestre, mesmo que estejam silentes há muitos anos.Se presentan aspectos epidemiológicos y del control de la fiebre amarilla en Brasil, considerando los ciclos de transmisión silvestre y urbana. Sin registros de transmisión en Brasil desde 1942, hubo casos de fiebre amarilla urbana en 2008 en Paraguay, después de más de 50 años sin ocurrir en las Américas. La reducción del número de casos silvestre y el mantenimiento de la eliminación de los casos urbanos son los dos principales objetivos del control de la fiebre amarilla en Brasil. A pesar de que exista consenso con respecto a las medidas que deben ser tomadas en las áreas endémicas para la forma silvestre, esto no ocurre con relación a las áreas infestadas por el Aedes aegypti. Son discutidos argumentos favorables y contrarios a la expansión del área de vacunación. Hay necesidad de estudios ambientales y entomológicos para el reconocimiento de áreas receptivas para transmisión silvestre, aunque se encuentren silentes desde hace muchos años.This paper presents epidemiological and control characteristics of yellow

  7. Analisis de la microbiota en suelos cultivados del Altiplano central

    OpenAIRE

    Sivila, R.; Hervé, Dominique

    2001-01-01

    Se estudio la poblacion microbina en una rotacion de cultivos con descanso, comun en el Altiplano Central boliviano. Se determino la presencia y densidad de cuatro grupos taxonomicos de microorganismos: bacterias; hongos, actinomicetos y esporas de las micorrizas arbusculares en el suelo rizosferico de cuatro cultivos de la rotacion (papa, quinua, cebada y avena); en las principales especies silvestres perennes (#Stipa ichu, Festuca dolichophylla, Baccharis incarum$) que colonizan las parcela...

  8. Autonomie et gestion communautaire des aires protégées de la ...

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

    Rapports. Desarrollo de estrategias de autonomía y control ciudadano para la gestión descentralizada de áreas silvestres protegidas del Estado en la Región de La Araucanía de Chile y la Provincia de Neuquén de Argentina : informe final (Agosto 2008-Noviembre... Téléchargez le PDF. Études. Gobernanza Indígena: un ...

  9. Southeast Asia Report.

    Science.gov (United States)

    1985-09-12

    Minister of Justice Comments on New Criminal Code (Phan Hien; NHAN DAN, 2, 3 Jul 85) m Army Paper Discusses Induction Task of Localities...administrative code , the local executives are responsible for the maintenance of peace and order in their respective jurisdiction. It is necessary...Albay 9 days ago. He died clutching the Philipping national flag as a touching symbol of what he fought and died for. 58 But M/Sgt Isaias Silvestre

  10. Serological surveillance on South American wild canids for Neospora caninum

    Directory of Open Access Journals (Sweden)

    Melo C.B.

    2002-01-01

    Full Text Available Esse trabalho objetivou pesquisar anticorpos para Neospora caninum em amostras de soro de canídeos silvestres sul-americanos pela técnica de imunofluorescência indireta (IFI. As amostras foram coletadas de 48 lobos-guará (Chrysocyon brachyurus, provenientes de zoológicos e de vida livre e de dois cachorros-do-mato (Cerdocyon thous. Anticorpos para N. caninum não foram detectados nas amostras testadas.

  11. Ground Vehicle Navigation Using Magnetic Field Variation

    Science.gov (United States)

    2012-09-13

    points on the sphere to resolve the calibration parameters. This approach is nearly identical to 5 Vasconcelos [44]. Additionally, the composition of...possible. 1.1.5 Three-axis Magnetometer Calibration. Vasconcelos et al., addressed three-dimensional ellipsoid calibration techniques for...Strangway, David W. History of the Earth’s Magnetic Field. McGraw-Hill, Inc., New York, NY, 1970. 44. Vasconcelos , J.F., G. Elkaim, C. Silvestre, P

  12. Aspectos epidemiológicos da Leishmaniose Tegumentar Americana no município de Juína, Mato Grosso, Brasil = Epidemiological aspects of American Cutaneous Leishmaniasis in the city of Juína, Mato Grosso state, Brazil

    Directory of Open Access Journals (Sweden)

    França, Eduardo Luzia

    2009-01-01

    Conclusões: a análise dos dados revelou que a Leishmaniose Tegumentar Americana é uma parasitose importante no município de Juína. Os dados sugerem relação com a atividade laboral e um perfil de transmissão predominantemente silvestre, o que deve ser levado em conta ao definir medidas de controle da doença na região

  13. Brotes de rabia humana transmitida por vampiros en los municipios de Bajo y Alto Baudó, departamento del Chocó, Colombia 2004-2005

    Directory of Open Access Journals (Sweden)

    Jessika Valderrama

    2006-09-01

    Conclusiones. El brote de rabia humana en Bajo Baudó 2004 ha sido el de mayor magnitud reportado en Colombia. Este fue causado por vampiros, demostrando la amenaza que representa la rabia de especies silvestres para la salud pública, y la necesidad de implementar acciones para evitar su impacto en humanos. Se desconoce si existen vínculos entre este brote y el reportado en Alto Baudó seis meses después.

  14. Leposoma percarinatum (Müller, 1923 (Sauria: Gymnophthalmidae

    Directory of Open Access Journals (Sweden)

    Quinteros Muñoz, Oliver

    2008-04-01

    Full Text Available República de Bolivia, Departamento de Pando, Provincia Federico Román, Reserva de Vida Silvestre Bruno Racua, laguna Tucunaré (9º55'15,43" S, 65º20'37,36" O. Fecha de colección: 05/09/2007. Col.: Oliver Quinteros. Colección de vertebrados del Centro de Biodiversidad y Genética (CBG 356, Cochabamba, Bolivia. Un ejemplar hembra adulta (34,12 mm LHC.

  15. METHODOLOGY OF THE AUDIT OF ENVIRONMENTAL MANAGEMENT OF THE WETLANDSOF PERÚ WTHIN THE FRAMEWORK OF THE RAMSAR CONVENTION

    OpenAIRE

    Mogrovejo Espinoza, Martín Edmundo

    2014-01-01

    The study formulates how the technical/operative alignments of the Ramsar Convention facilitate the implementation of the environmental and audit management methodology of the wetlands of Peru. It’s an investigation on an explanatory level, developed in a sample of five wetlands: Reserva Nacional de Paracas (Ica), Refugio de Vida Silvestre Los Pantanos de Villa (Lima), Santuario Nacional Lagunas de Mejia (Arequipa), Santuario Nacional Manglares de Tumbes (Tumbes) y Reserva Nacional Junín ( Ju...

  16. Infecciones parasitarias del coyote, Canis latrans (Carnivora: Canidae en un Parque Nacional y una zona agrícola en Costa Rica

    Directory of Open Access Journals (Sweden)

    Carmen Niehaus

    2012-06-01

    Full Text Available Conforme las poblaciones humanas se expanden hacia los hábitats silvestres con sus mascotas y ganado, el potencial de transmisión de enfermedades hacia los animales silvestres -y viceversa- aumenta, y hace necesario identificar interacciones zoonóticas potenciales. Los cánidos domésticos y silvestres pueden funcionar como reservorios o diseminadores de enfermedades infecciosas (se incluyen parásitos, por lo que el coyote (Canis latrans puede también servir como indicador de la salud ecológica. Asimismo, se estudiaron los parásitos de 209 muestras de heces de coyotes en una zona mixta de área silvestre protegida y campo agrícola del Parque Nacional Volcán Irazú (PNVI en Costa Rica. La recolección fue realizada mensualmente durante un año en tres sub-áreas denominadas: Irazú (la más cercana al volcán, papales (por el cultivo de papas, y Prusia (un sector del PNVI. Entonces, se empleó examen directo y concentración mecánica, se obtuvo 36.84% de muestras positivas por al menos un helminto. La presencia de parásitos fue muy similar para ambos sectores boscosos del PNVI (33.3% en Prusia y 37.4% en Irazú, pero contrastó con el 63.63% observado en los papales. También, se identificaron uncinarias (probablemente Ancylostoma caninum, estrongilidios (posiblemente Strongyloides sp., Toxocara canis, Trichuris sp. y Taenia pisiformis, así como Hymenolepis diminuta, probablemente un parásito espurio proveniente de roedores ingeridos por los coyotes. Se comenta la importancia de estos primeros hallazgos y se concluye que las estaciones seca y lluviosa influyen en la presencia de los parásitos.

  17. El cuento americano: Güeno-mapu

    Directory of Open Access Journals (Sweden)

    Gabriel Carvajal

    1966-02-01

    Full Text Available Helechos. Susurran como el abanico del pavo real. Ahí están. En grupos o hileras sobre la huella rojiza que va al caserío. Junto a la selva. Lejos, adentro, a donde solo llegan a ramonear los vahuales. En la traba de pellines, ulmos y araucarias, rosal silvestre y zarza levantada en altura de lianas y cañaveral.

  18. Evolución de la música de cámara en Ecuador en el formato de quinteto de vientos maderas durante el siglo XX

    OpenAIRE

    Morocho Guamo, Paulo César

    2014-01-01

    El presente trabajo investigativo tiene por objeto el estudio formal de los quintetos para vientos maderas conformado por flauta, oboe, clarinete, fagot y corno francés, escritos por compositores académicos ecuatorianos durante el siglo XX, las obras que se encontrarán son: • Quinteto de Alientos. Compositor Luis Humberto Salgado. • Cinco miniaturas. Compositor Gerardo Guevara. • Danza profana. Compositor Marcelo Ruano. • Quinteto silvestre. Compositor Diego Luzuriaga. En este ...

  19. Occurrence of ticks on wild animals received and attended at the Parque Zoológico Municipal Quinzinho de Barros, Sorocaba, São Paulo, Brazil

    Directory of Open Access Journals (Sweden)

    Thiago Fernandes Martins

    2015-12-01

    Full Text Available Os carrapatos são ectoparasitas da classe Arachnida que parasitam vertebrados terrestres, anfíbios, repteis, aves e mamíferos. O presente trabalho relata a ocorrência de carrapatos ixodídeos em animais silvestres recebidos e atendidos pelo Hospital Veterinário do Parque Zoológico Municipal Quinzinho de Barros, localizado no município de Sorocaba, estado de São Paulo, Brasil. De setembro de 1999 a maio de 2015, foram coletados carrapatos em animais silvestres da região de Sorocaba e de outros 20 municípios do interior do estado de São Paulo. Ao todo, foram identificados 43 larvas, 637 ninfas e 1.178 adultos (631 machos e 547 fêmeas, totalizando 1.858 exemplares de 14 espécies distintas de ixodídeos. Durante exames clínicos de rotina, foram inspecionadas duas espécies de repteis, uma espécie de ave e 11 espécies distintas de mamíferos de um total de 103 animais silvestres amostrados. Nos repteis foram identificados Amblyomma rotundatum, nas aves Amblyomma sculptum e nos mamíferos Amblyomma aureolatum, Amblyomma brasiliense, Amblyomma calcaratum, Amblyomma dubitatum, Amblyomma longirostre, Amblyomma nodosum, Amblyomma ovale, A. sculptum, Amblyomma varium, Ixodes aragaoi, Haemaphysalis juxtakochi, Rhipicephalus microplus e Dermacentor nitens. Este estudo relata os primeiros registros de fêmeas de A. rotundatum parasitando Hydromedusa tectifera e Oxyrhopus guibei, assim como ninfas de A. dubitatum e H. juxtakochi em Chrysocyon brachyurus, ninfas de A. brasiliense em Myrmecophaga tridactyla e Tamandua tetradactyla, além de ninfas de A. sculptum em Alouatta guariba e Sphiggurus villosus no país, demonstrando que os zoológicos são uma fonte de informação valiosa para o conhecimento parasitológico da fauna silvestre brasileira.

  20. Triatominos del departamento de San Martín, Perú, 2005

    OpenAIRE

    Cáceres, Abraham; Zavaleta, Gina; Ruiz, Juan; Vega, Silvia; Arevalo, Heriberto; Náquira, César

    2005-01-01

    La presencia de los triatominos transmisores de Trypanosoma cruzi y Trypanosoma rangeli ha sido reportada en todos los departamentos del Perú, excepto en Huancavelica. En el sudoeste, el Triatoma infestans es de hábitos domiciliarios y en la zona norte y nororiente hay numerosas especies de hábitos intradomiciliarios (Panstrongylus herreri, Rhodnius ecuadoriensis) aunque ocasionalmente ingresan a las viviendas (T. Carroni, P. geniculatus, P. chinai), mientras que otras son de hábitos silvestr...

  1. Las abejas de Porce familia colletidae (hymenoptera: apoidea notas y claves para los géneros presentes en la zona de influencia del embalse Porce ii.

    Directory of Open Access Journals (Sweden)

    Smith Pardo Allan H.

    1999-12-01

    Full Text Available Se presentan claves taxonómicas a nivel de género para la identificación de las abejas colletidas de la zona de Influencia del Embalse Porce II (Porce, Antioquía, Colombia S.A. Adicionalmente se presentan algunas notas para los géneros de colletidos capturados durante el inventario de las abejas silvestres de la zona.

  2. Proyecto de cooperación para el desarrollo: Fomento de prácticas apícolas en el Distrito de Muanza-Sofala-Mozambique

    OpenAIRE

    Nur Mário Alves, Rafael

    2016-01-01

    El presente proyecto surge como iniciativa frente a la pobreza, deforestación y pérdida de biodiversidad presentes en las inmediaciones del Parque Nacional de Gorongosa, en el centro de Mozambique, asociada a una agricultura poco desarrollada, que provoca que las comunidades rurales tengan que buscar medios de subsistencia ambientalmente insostenibles, destruyendo la flora y fauna silvestre, para su posterior transformación en productos de autoconsumo y comercializables. En la ...

  3. Estructura poblacional y variabilidad genética de Rhodnius prolixus (Hemiptera: Reduviidae procedente de diferentes áreas geográficas de Colombia

    Directory of Open Access Journals (Sweden)

    Diana Carolina López

    2007-01-01

    Resultados. R. prolixus presenta variabilidad genética moderada (Fst 0,057-0,15, entre las poblaciones domiciliadas se encontraron tasas de migración (Nm>1 que revelan flujo genético. Se encontró diferenciación genética de moderada-alta entre la población silvestre de Casanare y las poblaciones domésticas del centro del país (Tolima y Cundinamarca. Conclusión. Las poblaciones domiciliadas de R. prolixus son homogéneas debido a que existe flujo genético entre éstas; lo cual es favorable para el control químico, mientras que la población silvestre agrupa aparte de las domiciliadas. Se evidencia la necesidad de estudiar la estructura genética de los focos silvestres, sus posibles rutas de dispersión y el riesgo epidemiológico que representan.

  4. Distribución actual e importancia epidemiológica de las especies de triatominos (Reduviidae: Triatominae en Colombia

    Directory of Open Access Journals (Sweden)

    Jorge A. Molina

    2000-12-01

    Full Text Available Se presenta la distribución geográfica y la importancia epidemiológica en la transmisión de la enfermedad de Chagas de las 23 especies de triatominos presentes en Colombia, tomando como base los registros bibliográficos existentes en el pais y las colecciones de referencia del Laboratorio de Entomologia del Instituto Nacional de Salud y del Centro de Investigaciones en Microbiologia y Parasitologia Tropical de la Universidad de los Andes; además, se realiza un análisis de las condiciones ecológicas en las cuales han sido registrados triatominos en los paises con fronteras con Colombia para poder establecer la presencia de posibles especies que aún no se han registrado en nuestro pais. De esta manera. existe la posibilidad de tener en Colombia especies con hábitos silvestres como: Alberprosenia malheiroi. Belminus laportei y Cavernicola lenti, preentes todas ellas en los departamentos amazónicos; Triatoma nigromaculata en la Cordillera Oriental y con hábitos intradomiciliarios; Panstrongylus chinai con posibilidad de encontrarse en hábitats selváticos o en las viviendas de los colonos de la Amazonia debido a su atracción por la luz y Alberprosenia goyovargasien hábitats silvestres de la frontera con Venezuela. Se resalta la importancia de la vigilancia entomológica a nivel nacional como estrategia para reforzar los estudios de triatominos silvestres en Colombia.

  5. Phylogenetics and diversification of tanagers (Passeriformes: Thraupidae), the largest radiation of Neotropical songbirds.

    Science.gov (United States)

    Burns, Kevin J; Shultz, Allison J; Title, Pascal O; Mason, Nicholas A; Barker, F Keith; Klicka, John; Lanyon, Scott M; Lovette, Irby J

    2014-06-01

    Thraupidae is the second largest family of birds and represents about 4% of all avian species and 12% of the Neotropical avifauna. Species in this family display a wide range of plumage colors and patterns, foraging behaviors, vocalizations, ecotypes, and habitat preferences. The lack of a complete phylogeny for tanagers has hindered the study of this evolutionary diversity. Here, we present a comprehensive, species-level phylogeny for tanagers using six molecular markers. Our analyses identified 13 major clades of tanagers that we designate as subfamilies. In addition, two species are recognized as distinct branches on the tanager tree. Our topologies disagree in many places with previous estimates of relationships within tanagers, and many long-recognized genera are not monophyletic in our analyses. Our trees identify several cases of convergent evolution in plumage ornaments and bill morphology, and two cases of social mimicry. The phylogeny produced by this study provides a robust framework for studying macroevolutionary patterns and character evolution. We use our new phylogeny to study diversification processes, and find that tanagers show a background model of exponentially declining diversification rates. Thus, the evolution of tanagers began with an initial burst of diversification followed by a rate slowdown. In addition to this background model, two later, clade-specific rate shifts are supported, one increase for Darwin's finches and another increase for some species of Sporophila. The rate of diversification within these two groups is exceptional, even when compared to the overall rapid rate of diversification found within tanagers. This study provides the first robust assessment of diversification rates for the Darwin's finches in the context of the larger group within which they evolved. Copyright © 2014 Elsevier Inc. All rights reserved.

  6. Frequency of zoonotic bacteria among illegally traded wild birds in Rio de Janeiro

    Directory of Open Access Journals (Sweden)

    Carlos Alexandre Rey Matias

    Full Text Available Abstract The illegal wildlife trade may increase the risk of infectious disease transmission, and it may not only cause disease outbreaks in humans but also threaten livestock, native wild populations, and ecosystems' health. Bird species may act as carriers in the transmission of enteric pathogens. However, epidemiological studies on zoonotic bacteria in wild birds are rare in Brazil. From March 2011 to March 2012, we investigated the frequency of Enterobacteriaceae in cloacal swab samples from 109 birds of the passerine and Psittacidae families. These birds were recovered from illegal trade in Rio de Janeiro, Brazil, and sent to a rehabilitation center. Gram-negative bacteria were isolated from 86 wild birds (78.9%. A mean (±SD of 1.68 (±1.30 different bacterial species were isolated per bird, with a maximum of five bacterial species from three bird species. The most frequently isolated bacteria were Escherichia coli, followed by Enterobacter spp., Klebsiella pneumoniae and other enteric bacteria. Salmonella ser. Typhimurium was isolated from a Temminck's seedeater (Sporophila falcirostris, and two Salmonella ser. Panama were isolated from two specimens of chestnut-capped blackbird (Chrysomus ruficapillus. Of the 70 selected bacterial isolates, 60 exhibited antibiotic resistance. The resistance patterns varied from one to nine of the antibiotics tested. Resistance to ceftiofur was the most prevalent, followed by ampicillin and ceftriaxone. The dissemination potential of resistant strains in situations typically seen in the management of captive birds may become a problem for the conservation of natural bird populations and for public health.

  7. Comparison of some reproductive characteristics of farmed and wild white shrimp males Litopenaeus vannamei (Decapoda: Penaeidae

    Directory of Open Access Journals (Sweden)

    Sergio Rendón Rodríguez

    2007-03-01

    Full Text Available We rated some reproductive characteristics of white shrimp Litopenaeus vannamei (Boone, 1931 males using 46 farmed individuals (weighing 21.42±0.56 g and 40 wild individuals (weighing 36.10±0.72 g. In farmed shrimps, spermatophore mean weight was 8.94±0.51 mg; total mean sperm count was 3.90±0.27 x 10(6 in each spermatophore; and mean percentage of normal sperm was 86.9±0.37 %. In wild individuals, the respective values were 30.68±2.32 mg; 6.22±1.09 x 10(6; and 62.1±3.56 %. In both groups, the differences between right and left spermatophore were not significant (pResumen Se evaluaron características reproductivas como peso del espermatóforo, número de espermatozoides y porcentaje de espermatozoides normales en 86 organismos de camarón blanco (Litopenaeus vannamei. de éstos, 46 individuos provinieron de estanques de cultivo con un peso de 21.42±0.56 g y el resto, 40, silvestres con un peso de 36.10±0.72 g. En los camarones cultivados, el peso de los espermatóforos fue de 8.94±0.51 mg; el número total de espermatozoides en cada espermatóforo fue de 3.90±0.27 x 10(6; y el porcentaje de espermatozoides normales fue de 86.9±0.37 %. En los silvestres, los valores respectivos fueron de 30.68±2.32 mg; 6.22±1.09 x 10(6; y 62.1±3.56 %. En ambos grupos, las diferencias entre los espermatóforos derecho e izquierdo no fueron estadísticamente diferentes (p<0.01. Las diferencias en el peso de los espermatóforos y el porcentaje de espermatozoides normales, entre los camarones cultivados y silvestres, fueron significativas (p<0.01; sin embargo, en el número de espermatozoides tales diferencias no fueron significativas (p<0.01. La relación entre el peso del espermatóforo (Ws y el peso de los individuos (Wo fue Ws (mg=1.23(Wo-17.34 (r²=0.89, en camarones cultivados; y Ws (mg=2.57(Wo-60.04 (r²=0.64, en los silvestres. En organismos cultivados, la relación entre el número de espermatozoides (Cs y el peso de los individuos (Wo fue

  8. Phytoremediative urban design: transforming a derelict and polluted harbour area into a green and productive neighbourhood.

    Science.gov (United States)

    Wilschut, M; Theuws, P A W; Duchhart, I

    2013-12-01

    Many urban areas are polluted by industrial activities and waste disposal in landfills. Since conventional soil remediation techniques are costly and unsustainable, phytoremediation might offer an alternative. In this article, we explore how phytoremediation can be integrated into the transformation of urban post-industrial areas, while improving public space. Buiksloterham, a polluted and deprived industrial area in Amsterdam, serves as case study. Buiksloterham is polluted with heavy metals, with Zinc (Zn) concentrations being the highest. A regression-model for Alpine Pennycress (Thlaspi caerulescens) is used to estimate the time needed to remediate the site. This reveals a conflict in time between remediation and urban development. A research by design experiment shows how to overcome this conflict by dealing with polluted soil innovatively while emphasizing spatial and aesthetic qualities of the phytoremediation plant species. The resulting landscape framework integrates phytoremediation with biomass production and gives new ecological, economic and social value to Buiksloterham. Copyright © 2013 Elsevier Ltd. All rights reserved.

  9. Agar from some Hawaiian red algae

    Energy Technology Data Exchange (ETDEWEB)

    Santos, G.A.; Doty, M.S.

    1983-08-01

    From describing the agars of Gelidiella acerosa Forskk., Gelidium pluma Loomis, G. pusillum (Stackh.) Lejolis, Gracilaria abbotiana Hoyle, G. bursapastoris (Gmelin) Silva, G. canaliculata (Kutzing) Sonder, G. coronopifolia J.Ag., G. epihippisora Hoyle, Pterocladia caerulescens (Kutzing) Santelices and P. capillacea (Gmelin) Born. and Thur. as found in Hawaiian samples of these species, it is concluded that the species of Gelidium and especially Pterocladia and Gelidiella may merit more consideration for usage due to their agar gel strengths. The nature of the gel from Gracilaria abbottiana suggests the generic status might well be reexamined. The agars from the Gelidiella and the other Gracilaria species should be studied further for their prospective values to the food industry other than gel strength. Mixtures of the agars from G. bursapastoris and G. coronopifolia would merit attention for the taste texture of their mixtures. (Refs. 18).

  10. Trichoderma songyi sp. nov., a new species associated with the pine mushroom (Tricholoma matsutake).

    Science.gov (United States)

    Park, Myung Soo; Oh, Seung-Yoon; Cho, Hae Jin; Fong, Jonathan J; Cheon, Woo-Jae; Lim, Young Woon

    2014-10-01

    A new species, Trichoderma songyi, was found to be associated with the pine mushroom (Tricholoma matsutake) in Korea. This species was isolated from three different substrates: Tricholoma matsutake basidiomata, as well as roots of Pinus densiflora and soil in the fairy ring. Based on its molecular and phenotypic characteristics, we demonstrate that Trichoderma songyi is unique and distinguishable from closely related species. We performed phylogenetic analyses based on two molecular markers, the genes for both translation elongation factor 1-alpha and the second largest subunit of RNA polymerase II. Phylogenetic analyses showed that Trichoderma songyi is closely related to Trichoderma koningii aggregate and Trichoderma caerulescens. Morphologically, Trichoderma songyi can be distinguished from these closely related taxa by its growth rates, colony morphology on PDA in darkness, and coconut-like odour. Due to the economic importance of the pine mushroom, the relationship between Trichoderma songyi and Tricholoma matsutake should be studied further.

  11. Model evaluation of the phytoextraction potential of heavy metal hyperaccumulators and non-hyperaccumulators.

    Science.gov (United States)

    Liang, Hong-Ming; Lin, Ting-Hsiang; Chiou, Jeng-Min; Yeh, Kuo-Chen

    2009-06-01

    Evaluation of the remediation ability of zinc/cadmium in hyper- and non-hyperaccumulator plant species through greenhouse studies is limited. To bridge the gap between greenhouse studies and field applications for phytoextraction, we used published data to examine the partitioning of heavy metals between plants and soil (defined as the bioconcentration factor). We compared the remediation ability of the Zn/Cd hyperaccumulators Thlaspi caerulescens and Arabidopsis halleri and the non-hyperaccumulators Nicotiana tabacum and Brassica juncea using a hierarchical linear model (HLM). A recursive algorithm was then used to evaluate how many harvest cycles were required to clean a contaminated site to meet Taiwan Environmental Protection Agency regulations. Despite the high bioconcentration factor of both hyperaccumulators, metal removal was still limited because of the plants' small biomass. Simulation with N. tabacum and the Cadmium model suggests further study and development of plants with high biomass and improved phytoextraction potential for use in environmental cleanup.

  12. Indoors forensic entomology: colonization of human remains in closed environments by specific species of sarcosaprophagous flies.

    Science.gov (United States)

    Pohjoismäki, Jaakko L O; Karhunen, Pekka J; Goebeler, Sirkka; Saukko, Pekka; Sääksjärvi, Ilari E

    2010-06-15

    Fly species that are commonly recovered on human corpses concealed in houses or other dwellings are often dependent on human created environments and might have special features in their biology that allow them to colonize indoor cadavers. In this study we describe nine typical cases involving forensically relevant flies on human remains found indoors in southern Finland. Eggs, larvae and puparia were reared to adult stage and determined to species. Of the five species found the most common were Lucilia sericata Meigen, Calliphora vicina Robineau-Desvoidy and Protophormia terraenovae Robineau-Desvoidy. The flesh fly Sarcophaga caerulescens Zetterstedt is reported for the first time to colonize human cadavers inside houses and a COI gene sequence based DNA barcode is provided for it to help facilitate identification in the future. Fly biology, colonization speed and the significance of indoors forensic entomological evidence are discussed. (c) 2010 Elsevier Ireland Ltd. All rights reserved.

  13. Limnological regime shifts caused by climate warming and Lesser Snow Goose population expansion in the western Hudson Bay Lowlands (Manitoba, Canada).

    Science.gov (United States)

    MacDonald, Lauren A; Farquharson, Nicole; Merritt, Gillian; Fooks, Sam; Medeiros, Andrew S; Hall, Roland I; Wolfe, Brent B; Macrae, Merrin L; Sweetman, Jon N

    2015-02-01

    Shallow lakes are dominant features in subarctic and Arctic landscapes and are responsive to multiple stressors, which can lead to rapid changes in limnological regimes with consequences for aquatic resources. We address this theme in the coastal tundra region of Wapusk National Park, western Hudson Bay Lowlands (Canada), where climate has warmed during the past century and the Lesser Snow Goose (LSG; Chen caerulescens caerulescens) population has grown rapidly during the past ∽40 years. Integration of limnological and paleolimnological analyses documents profound responses of productivity, nutrient cycling, and aquatic habitat to warming at three ponds ("WAP 12", "WAP 20", and "WAP 21″), and to LSG disturbance at the two ponds located in an active nesting area (WAP 20, WAP 21). Based on multiparameter analysis of (210)Pb-dated sediment records from all three ponds, a regime shift occurred between 1875 and 1900 CE marked by a transition from low productivity, turbid, and nutrient-poor conditions of the Little Ice Age to conditions of higher productivity, lower nitrogen availability, and the development of benthic biofilm habitat as a result of climate warming. Beginning in the mid-1970s, sediment records from WAP 20 and WAP 21 reveal a second regime shift characterized by accelerated productivity and increased nitrogen availability. Coupled with 3 years of limnological data, results suggest that increased productivity at WAP 20 and WAP 21 led to atmospheric CO2 invasion to meet algal photosynthetic demand. This limnological regime shift is attributed to an increase in the supply of catchment-derived nutrients from the arrival of LSG and their subsequent disturbance to the landscape. Collectively, findings discriminate the consequences of warming and LSG disturbance on tundra ponds from which we identify a suite of sensitive limnological and paleolimnological measures that can be utilized to inform aquatic ecosystem monitoring.

  14. Assessment of phyto-available cadmium in soils using isotopic methods

    International Nuclear Information System (INIS)

    Gerard, Emilie

    2000-01-01

    The quantification of phyto-available Cd in soils is necessary to determine the transfer risk of this toxic element to plants. Isotopic methods (isotopic exchange kinetics (IEK), isotopic dilution) were used to characterize the phyto-available Cd and, practically, to select chemical methods for determining available Cd to plants. Rye grass (Lolium perenne L.), lettuce (Lactuca saliva L.) and the Cd hyper-accumulator Thlaspi caerulescens J. Presl. and C. Presl. were selected as test plants because of their wide range of Cd uptake ability. The chosen soils had different pH and displayed a Cd-contamination gradient due the atmospheric deposition of industrial particles. In the acidic soil, plants had access to the same metal pool, the one that was isotopically exchangeable with Cd 2+ . This was also the case for rye grass on the calcareous Soils but there, lettuce and T. caerulescens accessed a bigger and non-isotopically exchangeable pool that accounted for 16 to 52 % of the plant available Cd. Most of the Cd was isotopically exchangeable in a short time in the acidic soil (87 % within 21 days). In the calcareous soils two pools were identified, one pool was isotopically exchangeable in a very short time, and the other one Was not exchangeable after 21 days (21 to 10 % of the total Cd). Actually, the quantities of labile cd in the industrial particles which had contaminated these soils were very small. IEK methods and the measurement of the isotopic composition of Cd 2+ in soil solutions allowed for the estimation of the phyto-available Cd in soils, but cannot he commonly used. Most of the chemical extractants studied such as CaCl 2 or DTP A are suitable to assess the phyto-available Cd. However, on calcareous soils, the choice of extractant needs to sometimes be modified in relation to the rate of Cd plant absorption. (author) [fr

  15. Effects of migratory geese on plant communities of an Alaskan salt marsh

    Science.gov (United States)

    Zacheis, Amy B.; Hupp, Jerry W.; Ruess, Roger W.

    2001-01-01

    1. We studied the effects of lesser snow geese (Anser caerulescens caerulescens) and Canada geese (Branta canadensis) on two salt marsh plant communities in Cook Inlet, Alaska, a stopover area used during spring migration. From 1995 to 1997 we compared plant species composition and biomass on plots where geese were excluded from feeding with paired plots where foraging could occur. 2. Foraging intensity was low (650-1930 goose-days km-2) compared to other goose-grazing systems. 3. Canada geese fed mainly on above-ground shoots of Triglochin maritimum, Puccinellia spp. and Carex ramenskii, whereas the majority of the snow goose diet consisted of below-ground tissues of Plantago maritima and Triglochin maritimum. 4. Plant communities responded differently to goose herbivory. In the sedge meadow community, where feeding was primarily on above-ground shoots, there was no effect of grazing on the dominant species Carex ramenskii and Triglochin maritimum. In the herb meadow community, where snow geese fed on Plantago maritima roots and other below-ground tissues, there was a difference in the relative abundance of plant species between treatments. Biomass of Plantago maritima and Potentilla egedii was lower on grazed plots compared with exclosed, whereas biomass of Carex ramenskii was greater on grazed plots. There was no effect of herbivory on total standing crop biomass in either community. The variable effect of herbivory on Carex ramenskii between communities suggests that plant neighbours and competitive interactions are important factors in a species' response to herbivory. In addition, the type of herbivory (above- or below-ground) was important in determining plant community response to herbivory. 5. Litter accumulation was reduced in grazed areas compared with exclosed in both communities. Trampling of the previous year's litter into the soil surface by geese incorporated more litter into soils in grazed areas. 6. This study illustrates that even light herbivore

  16. Decadal declines in avian herbivore reproduction: density-dependent nutrition and phenological mismatch in the Arctic.

    Science.gov (United States)

    Ross, Megan V; Alisauskas, Ray T; Douglas, David C; Kellett, Dana K

    2017-07-01

    A full understanding of population dynamics depends not only on estimation of mechanistic contributions of recruitment and survival, but also knowledge about the ecological processes that drive each of these vital rates. The process of recruitment in particular may be protracted over several years, and can depend on numerous ecological complexities until sexually mature adulthood is attained. We addressed long-term declines (23 breeding seasons, 1992-2014) in the per capita production of young by both Ross's Geese (Chen rossii) and Lesser Snow Geese (Chen caerulescens caerulescens) nesting at Karrak Lake in Canada's central Arctic. During this period, there was a contemporaneous increase from 0.4 to 1.1 million adults nesting at this colony. We evaluated whether (1) density-dependent nutritional deficiencies of pre-breeding females or (2) phenological mismatch between peak gosling hatch and peak forage quality, inferred from NDVI on the brood-rearing areas, may have been behind decadal declines in the per capita production of goslings. We found that, in years when pre-breeding females arrived to the nesting grounds with diminished nutrient reserves, the proportional composition of young during brood-rearing was reduced for both species. Furthermore, increased mismatch between peak gosling hatch and peak forage quality contributed additively to further declines in gosling production, in addition to declines caused by delayed nesting with associated subsequent negative effects on clutch size and nest success. The degree of mismatch increased over the course of our study because of advanced vegetation phenology without a corresponding advance in Goose nesting phenology. Vegetation phenology was significantly earlier in years with warm surface air temperatures measured in spring (i.e., 25 May-30 June). We suggest that both increased phenological mismatch and reduced nutritional condition of arriving females were behind declines in population-level recruitment, leading

  17. Effects of Metal Phytoextraction Practices on the Indigenous Community of Arbuscular Mycorrhizal Fungi at a Metal-Contaminated Landfill

    Science.gov (United States)

    Pawlowska, Teresa E.; Chaney, Rufus L.; Chin, Mel; Charvat, Iris

    2000-01-01

    Phytoextraction involves use of plants to remove toxic metals from soil. We examined the effects of phytoextraction practices with three plant species (Silene vulgaris, Thlaspi caerulescens, and Zea mays) and a factorial variation of soil amendments (either an ammonium or nitrate source of nitrogen and the presence or absence of an elemental sulfur supplement) on arbuscular mycorrhizal (AM) fungi (Glomales, Zygomycetes) at a moderately metal-contaminated landfill located in St. Paul, Minn. Specifically, we tested whether the applied treatments affected the density of glomalean spores and AM root colonization in maize. Glomalean fungi from the landfill were grouped into two morphotypes characterized by either light-colored spores (LCS) or dark-colored spores (DCS). Dominant species of the LCS morphotype were Glomus mosseae and an unidentified Glomus sp., whereas the DCS morphotype was dominated by Glomus constrictum. The density of spores of the LCS morphotype from the phytoremediated area was lower than the density of these spores in the untreated landfill soil. Within the experimental area, spore density of the LCS morphotype in the rhizosphere of mycorrhizal maize was significantly higher than in rhizospheres of nonmycorrhizal S. vulgaris or T. caerulescens. Sulfur supplement increased vesicular root colonization in maize and exerted a negative effect on spore density in maize rhizosphere. We conclude that phytoextraction practices, e.g., the choice of plant species and soil amendments, may have a great impact on the quantity and species composition of glomalean propagules as well as on mycorrhiza functioning during long-term metal-remediation treatments. PMID:10831433

  18. Decadal declines in avian herbivore reproduction: density-dependent nutrition and phenological mismatch in the Arctic

    Science.gov (United States)

    Ross, Megan V.; Alisaukas, Ray T.; Douglas, David C.; Kellett, Dana K.

    2017-01-01

    A full understanding of population dynamics depends not only on estimation of mechanistic contributions of recruitment and survival, but also knowledge about the ecological processes that drive each of these vital rates. The process of recruitment in particular may be protracted over several years, and can depend on numerous ecological complexities until sexually mature adulthood is attained. We addressed long-term declines (23 breeding seasons, 1992–2014) in the per capita production of young by both Ross's Geese (Chen rossii) and Lesser Snow Geese (Chen caerulescens caerulescens) nesting at Karrak Lake in Canada's central Arctic. During this period, there was a contemporaneous increase from 0.4 to 1.1 million adults nesting at this colony. We evaluated whether (1) density-dependent nutritional deficiencies of pre-breeding females or (2) phenological mismatch between peak gosling hatch and peak forage quality, inferred from NDVI on the brood-rearing areas, may have been behind decadal declines in the per capita production of goslings. We found that, in years when pre-breeding females arrived to the nesting grounds with diminished nutrient reserves, the proportional composition of young during brood-rearing was reduced for both species. Furthermore, increased mismatch between peak gosling hatch and peak forage quality contributed additively to further declines in gosling production, in addition to declines caused by delayed nesting with associated subsequent negative effects on clutch size and nest success. The degree of mismatch increased over the course of our study because of advanced vegetation phenology without a corresponding advance in Goose nesting phenology. Vegetation phenology was significantly earlier in years with warm surface air temperatures measured in spring (i.e., 25 May–30 June). We suggest that both increased phenological mismatch and reduced nutritional condition of arriving females were behind declines in population-level recruitment

  19. Acoustic courtship songs in males of the fruit fly Anastrepha ludens (Diptera: Tephritidae associated with geography, mass rearing and courtship success

    Directory of Open Access Journals (Sweden)

    R.D Briceño

    2009-11-01

    Full Text Available The Sterile Insect Technique (SIT has been used successfully to control or eradicate fruit flies. The commonly observed inferiority of mass-reared males, compared with wild males, when they are paired with wild females, is apparently due to their inadequate courtship. Anastrepha ludens males produce two types of wing vibration during courtship and mating, the "calling sound" and the "premating or precopulatory sound". There were clear differences in the calling songs between successful and unsuccessful courtships in sterile (irradiated and fertile Mexican flies. Among sterile flies, successful males produce longer buzzes, shorter interpulses and a higher power spectrum in the signal. Fertile flies showed the same trend. For mating songs a significant difference occurred in two parameters: power spectrum between sterile and fertile flies with respect to the type of song, and the signal duration and intensity were greater in non-irradiated flies. Calling songs of wild flies compared with laboratory grown flies from Mexico had shorter interpulses, longer pulses, and a greater power spectrum. However, in the case of premating songs, the only difference was in the intensity, which was significantly greater in wild males. An unexpected result was not observing pulses during pheromone deposition in wild males from Costa Rica. Comparing the premating songs of wild flies from Costa Rica and Mexico, no significant differences were observed in the duration, and the intensity of the signal was slightly greater in flies from Mexico. Rev. Biol. Trop. 57 (Suppl. 1: 257-265. Epub 2009 November 30.La técnica estéril del insecto (SIT se ha utilizado con éxito para controlar o para suprimir las moscas de fruta y su impacto en los cultivos. La inferioridad comúnmente observada de machos criados masivamente, comparada con los machos silvestres, cuando se aparean con las hembras silvestres es al parecer debido a su inadecuado cortejo. Los machos de Anastrepha

  20. DIVERSIDAD Y DISTRIBUCIÓN DE LAS Passifloraceae EN EL DEPARTAMENTO DEL HUILA EN COLOMBIA

    Directory of Open Access Journals (Sweden)

    John Ocampo Pérez

    2013-09-01

    Full Text Available Colombia es el país con mayor diversidad de Passifloraceae con 170 especies reportadas, tanto en formas silvestres como cultivadas. Sin embargo, existen zonas en el país donde esta riqueza ha sido poco explorada, como el departamento del Huila en el suroriente de la zona andina. Por esta razón, se revisaron las listas de inventarios con el objetivo de actualizar y establecer la distribución espacial de las especies en esta región con base en registros de herbario, literatura y datos de campo, para proponer estrategias de conservación. Un total de 26 especies pertenecientes al género Passiflora L. son registradas en el Huila entre los 1500 y 2500 msnm. Ocho de las especies son cultivadas y las otras 18 silvestres, se localizan principalmente en bordes de caminos y bosques secundarios. El bajo número de registros y de especies presentes en este departamento es el reflejo de la carencia de iniciativas de investigación sobre la biodiversidad florística. Lo anterior sugiere que esta región puede ser el escenario de muchas especies desconocidas en zonas poco o no exploradas. Por esta razón, la conservación in situ y de sus hábitats es una tarea urgente, al igual que la caracterización y evaluación de los recursos genéticos, lo que permitirá conocer los atributos de las especies silvestres y cultivadas para un mejor uso de la biodiversidad.

  1. Variación en loci isoenzimáticos entre machos y hembras de Lutzomyia shannoni (Dyar (Diptera: Psychodidae de Colombia

    Directory of Open Access Journals (Sweden)

    Estrella Cárdenas

    2000-12-01

    Full Text Available Se analizaron por sexo poblaciones silvestres de Lutzomyia shannoni de tres localidades distantes entre si: Palambi (Nariño, Cimitarra (Santander y Chinácota (Norte de Santander, con el fin de establecer la variación en 11 isoenzimas. Estas muestras se compararon con ejemplares de una colonia mantenida en el Laboratorio de Entomologia del INS desde 1992. Se utilizó el sistema de electroforesis vertical en geles de poliacrilarnida al 6%. Se encontró una heterocigosidad promedio entre 18.5 y 24,7% en las hembras silvestres y entre 13,5 y 19.4% entre los machos silvestres. La heterocigosidad promedio en las hembras de la colonia fue de 14,8% mientras que en los machos fue de 20.1%. Se detectaron entre 2,0 y 2,5 alelos por locus. La distancia genética de Nei entre las poblaciones fue baja y osciló entre 0,005 y 0,073. En la muestra de la colonia de 79 individuos. el locus Gpifue homocigoto en todas las hembras y heterocigoto en todos los machos. Aunque esta observación es probablemente una consecuencia de la colonización, indica que el locus Gpi está fuertemente unido a los cromosomas que determinan el sexo, con el alelo Gpi0,62 unido al locus que determina hembras y el alelo Gpi0,72 asociado con el locus que determina machos.

  2. Evaluación de la seroconversión como respuesta a la vacunación antirrábica en perros en el departamento del Valle del Cauca, Colombia, 2009

    OpenAIRE

    Andrés Páez; Constanza Hernández; Humberto Escobar; John Jairo Zapata; Jairo Méndez; Gloria Rey-Benito

    2011-01-01

    Introducción. El departamento del Valle del Cauca ha estado libre de rabia canina por más de 20 años, aunque persisten focos de rabia silvestre que amenazan a humanos y sus mascotas; por ello, como medida preventiva. se realizan anualmente campañas de vacunación antirrábica canina. Objetivos. Medir el impacto de la vacunación en términos de seroconversión de anticuerpos neutralizadores y de porcentaje de perros con respuesta inmunitaria humoral adecuada, relacionando variables ...

  3. Evaluación de la seroconversión como respuesta a la vacunación antirrábica en perros en el departamento del Valle del Cauca, Colombia, 2009

    OpenAIRE

    Páez, Andrés; Hernández, Constanza; Escobar, Humberto; Zapata, John Jairo; Méndez, Jairo; Rey-Benito, Gloria

    2011-01-01

    Introducción. El departamento del Valle del Cauca ha estado libre de rabia canina por más de 20 años, aunque persisten focos de rabia silvestre que amenazan a humanos y sus mascotas; por ello, como medida preventiva. se realizan anualmente campañas de vacunación antirrábica canina. Objetivos. Medir el impacto de la vacunación en términos de seroconversión de anticuerpos neutralizadores y de porcentaje de perros con respuesta inmunitaria humoral adecuada, relacionando variables propias de esto...

  4. Germinación en semilla de chile piquín (Capsicum annuum var. aviculare).

    OpenAIRE

    Cano Vázquez, Anaid

    2013-01-01

    El chile piquín es una planta silvestre que presenta ciertos mecanismos para asegurar la perpetuación de la especie. Dentro de estos mecanismos se encuentra la latencia de sus semillas. La germinación de las semillas de chile piquín presenta problemas para siembras intensivas comerciales. En este trabajo se planteó: 1) comparar diversas colectas en cuanto a su capacidad germinativa; 2) indagar si la baja germinación se debe a impermeabilidad en la semilla o a alguna característica estructura...

  5. Modelagem e análise geográfica integrada das variáveis ambientais e socioeconomicas para o mapeamento da ocorrência de morcegos em Belo Horizonte

    OpenAIRE

    Jorge Luis Costa Pinto

    2015-01-01

    O processo de urbanização possui consequências, uma delas refere-se à presença de animais silvestres no ambiente urbano. Dentre outros animais, os morcegos (Ordem Chiroptera) adaptaram-se à vida nas cidades. Assim como em seu habitat natural, nas cidades os morcegos também exercem importantes funções ambientais como a dispersão de sementes, polinização e controle de insetos, no entanto, os morcegos também podem ser transmissores de zoonoses. Investigar as relações entre esses animais e as var...

  6. Enfermedades Dermatológicas de los Primates

    OpenAIRE

    Alba Lorena López-Ruíz

    2008-01-01

    El Centro de Atención y Valoración de Animales Silvestres (CAV) Torre 4 esta ubicado en el Km 13 de la vía que conduce de Manizales a Bogotá, a una altitud de 2600msnm y temperatura promedio de 13ºC. Cuenta con 4 encierros para animales de alta montaña y 6 encierros en condiciones de climatización para animales tropicales. Las especies que ingresan provienen de decomisos realizados por la Corporación Autónoma Regional de Caldas (CORPOCALDAS)...

  7. Análisis morfológico del sistema reproductor femenino de Baeacris punctulatus (Orthoptera: Acrididae: Melanoplinae)

    OpenAIRE

    Adriana A. MICHEL; Héctor R. TERÁN

    2005-01-01

    Baeacris punctulatus (Thunberg) es una especie de importancia económica, de amplia distribución en Sudamérica. En el presente trabajo se realiza un estudio anatomo-histológico de los órganos reproductivos internos, en hembras silvestres y obtenidas en cámara de cría. El estudio permitió determinar particularidades histomorfológicas, en ovarios, glándulas accesorias, oviductos laterales y oviducto medio, relacionadas con la génesis y transferencia de las gametas y la ovoposición. Se caracteriz...

  8. Análisis morfológico del sistema reproductor femenino de Baeacris punctulatus (Orthoptera: Acrididae: Melanoplinae) Morphological analysis of the female reproductive system in Baeacris punctulatus (Orthoptera, Acrididae, Melanoplinae)

    OpenAIRE

    Adriana A. Michel; Héctor R. Terán

    2005-01-01

    RESUMEN. Baeacris punctulatus (Thunberg) es una especie de importancia económica, de amplia distribución en Sudamérica. En el presente trabajo se realiza un estudio anatomo-histológico de los órganos reproductivos internos, en hembras silvestres y obtenidas en cámara de cría. El estudio permitió determinar particularidades histomorfológicas, en ovarios, glándulas accesorias, oviductos laterales y oviducto medio, relacionadas con la génesis y transferencia de las gametas y la ovoposición. Se c...

  9. EXTRACCIÓN, CRISTALIZACIÓN Y CARACTERIZACIÓN DE INULINA A PARTIR DE YACÓN (Smallanthus sonchifolius (Poepp. & Endl.) PARA SU UTILIZACIÓN EN LA INDUSTRIA ALIMENTARIA Y FARMACÉUTICA EXTRACTION, CRYSTALIZATION AND CHARACTERIZATION OF INULIN FROM YACON (Smallanthus sonchifolius (Poepp. & Endl.) FOR TO BE USED IN FOOD AND FARMACEUTIC INDUSTRY

    OpenAIRE

    OSCAR ARANGO BEDOYA; GINNA PAOLA CUARÁN; JUAN CAMILO FAJARDO

    2008-01-01

    La tendencia hacia la adopción de una alimentación sana y balanceada que incluya elementos naturales y benéficos es creciente. Se plantea el aprovechamiento del yacón (Smallanthus sonchifolius (Poepp. & Endl.)), planta silvestre de la región andina de Nariño, por su alto contenido de inulina, fructooligosacárido utilizado en la industria alimentaria y farmacéutica para la elaboración de edulcorantes para diabéticos y como fibra en alimentos refinados. Este estudio reporta la optimización del ...

  10. Evaluación de la infestación de cinco especies de solanáceas al parasitismo del nemátodo del nudo de la raíz Meloidogyne incognita y el contenido de alcaloides en frutos de tomate de árbol y naranjilla injertados en estas especies

    OpenAIRE

    Navarrete Bastidas, Ximena Elianet

    2017-01-01

    Existe una alta incidencia del nemátodo Meloidogyne incognita en Solanáceas de importancia económica. Este patógeno ocasiona daños en la planta, llegando a producir hasta la muerte y ocasionando pérdidas para el agricultor. En la presente investigación, se evaluó la respuesta de infestación de cinco especies de Solanáceas silvestres (Solanum auriculatum, S.hirtum, S.hispidum, S.arboreum y Nicotiana glauca) al parasitismo de M. incognita. Se utilizó un diseño de bloques completamente al azar c...

  11. Hymenoptera parasitoides associados às larvas de Lepidoptera em reflorestamento e sistemas agroflorestais da fazenda Canchim (Embrapa Pecuária Sudeste), São Carlos, São Paulo, Brasil

    OpenAIRE

    Aline Garcia Pereira

    2013-01-01

    Estudos da flora e fauna silvestres são importantes por contribuirem para a compreensão dos processos ecológicos que ocorrem em resposta às estratégias de manejo utilizadas. Os Hymenoptera são um grupo-chave para o estabelecimento de prioridades em conservação do ambiente, pois representam alta proporção da diversidade de insetos, sendo facilmente amostrados. O objetivo deste trabalho foi caracterizar a fauna de Hymenoptera parasitoides associada às larvas de Lepidoptera em área de refloresta...

  12. Extracción y caracterización de aceite esencial del Molle Schinus linneo por medio de fluidos supercríticos

    OpenAIRE

    Angulo Gutiérrez, Olga Eugenia

    2015-01-01

    EL MOLLE (SCHINUS LINNEO), es una planta que crece en la región Junín de manera silvestre de la familia de las Anacardiaceae, no aprovechada. Dado que tiene una serie de propiedades farmacológicas a veces usado con fines ornamentales en jardines y lugares públicos. Por las bondades que presenta el molle (frutos) ha motivado realizan el trabajo de investigación extraídas de los alrededores del Distrito de Viquez Provincia de Huancayo Departamento De Junín, (en épocas de maduración de los fruto...

  13. Historia natural de los plátanos y las bananas

    OpenAIRE

    López Sáez, José Antonio; Pérez Soto, Josué

    2011-01-01

    Los plátanos y las bananas que se cultivan en muchos países de clima tropical proceden de dos especies silvestres del género Musa que habitan en el Sureste Asiático: el plátano malayo y el plátano macho. A partir de ellas se han obtenido más de un millar de híbridos, razas o cultivares de agradable sabor y alto valor nutritivo. Otras plataneras se han utilizado como plantas ornamentales, proporcionan fibra o tintes naturales, materiales de construcción e incluso remedios en medicina tradicion...

  14. Caracterización morfológica de cuarenta y seis accesiones de uchuva (Physalis peruviana L.), en Antioquia (Colombia)

    OpenAIRE

    Trillos González,Ofelia; Cotes Torres,José Miguel; Medina Cano,Clara Inés; Lobo Arias,Mario; Navas Arboleda,Alejandro Alberto

    2008-01-01

    La uchuva, Physalis peruviana L., crece como planta silvestre en las zonas tropicales altas de América, estando el centro de origen y diversificación en los Andes Suramericanos, principalmente de Colombia, Perú y Ecuador. Se realizó la caracterización morfológica de 46 accesiones de uchuva provenientes del Banco de Germoplasma de la nación Colombiana, a cargo de La Corporación Colombiana de Investigación Agropecuarias, CORPOICA, en el Centro de Investigación La Selva, ubicado en la vereda Lla...

  15. Morphologic characterization of forty six accessions of cape gooseberry (Physalis peruviana L.), in Antioquia (Colombia)

    OpenAIRE

    Trillos González, Ofelia; Cotes Torres, José Miguel; Medina Cano, Clara Inés; Lobo Arias, Mario; Navas Arboleda, Alejandro Alberto

    2008-01-01

    La uchuva, Physalis peruviana L., crece como planta silvestre en las zonas tropicales altas de América, estando el centro de origen y diversificación en los Andes Suramericanos, principalmente de Colombia, Perú y Ecuador. Se realizó la caracterización morfológica de 46 accesiones de uchuva provenientes del Banco de Germoplasma de la nación Colombiana, a cargo de La Corporación Colombiana de Investigación Agropecuarias, CORPOICA, en el Centro de Investigación La Selva, ubicado en la vereda Lla...

  16. Natural infection of the opossum Didelphis albiventris (Marsupialia, Didelphidae with Leishmania donovani, in Brazil

    Directory of Open Access Journals (Sweden)

    Ítalo A. Sherlock

    1984-12-01

    Full Text Available An opossum, Didelphis albiventris, from Jacobina, bahia State, was found naturally infected with Leishmania donovani, being the first non-canid wild mammal to be detected with agent of kala-azar in the New World.Um gambá, Didelphis albiventris, de Jacobina, Bahia, foi encontrado com infecção natural pela Leishmania donovani, sendo o primeiro mamífero silvestre não-canídeo a ser achado com o agente do calazar nas Américas.

  17. PCR dúplex a tiempo real para la detección de la variante clásica (RHDV) y nueva (RHDV2) de la enfermedad hemorrágica del conejo

    OpenAIRE

    Sarto, P.; Mendoza, M.; Calvo, A.J.; Monroy, F.; Jiménez de Bagüés Picazo, María Pilar; Calvete Margolles, Carlos; Calvo Lacosta, Jorge Hugo

    2017-01-01

    La enfermedad hemorrágica (RHD) es uno de los principales factores de mortalidad del conejo silvestre en la península ibérica. Desde su aparición a finales de los años 80 el agente etiológico predominante han sido cepas víricas pertenecientes a un único genogrupo (RHDV). Sin embargo, en 2011 se detectó, inicialmente en el tercio norte de España, una nueva variante vlrica (RHDV2) que cursó de forma atlpica, modificando la epidemiologla de la enfermedad y afectando a animales con menos de...

  18. 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...

  19. Introducción al Control de Plagas: consideraciones éticas y ambientales

    OpenAIRE

    Nestor Varela

    2010-01-01

    Plaga es un concepto antropocéntrico para definir organismos que entran en conflicto con los intereses humanos, pero en el manejo de vida silvestre es más apropiado denominar a estos organismos como invasores. Muchos de los cambios causados al entorno natural y uso de los recursos naturales determinan la presentación de animales plaga o invasores, en particular el comercio internacional, la alteración del entorno y el almacenamiento masivo de recursos. El control de plagas se realiza mediante...

  20. Efeito da enxertia em mandioca

    OpenAIRE

    Bomfim, Nayra Nascimento

    2011-01-01

    Enxertos de duas espécies silvestres (M. glaziovii e M. fortalezensis) sobre M. esculenta, mandioca, foram estudados morfologicamente, anatomicamente e citogeneticamente e a fim de se avaliar possíveis efeitos devido à interação entre enxerto e porta-enxerto. Foram feitas análises anatômicas das raízes dos porta-enxertos UnB 201 e UnB 122 (variedades de M. esculenta), em comparação com as variedades não enxertadas. Analisou-se a meiose em enxerto da espécie M. glaziovii que apresentava morfol...

  1. Ocorrência de Dioctophyma renale em Galictis cuja

    OpenAIRE

    Zabott, Marivone V.; Pinto, Simone B.; Viott, Aline M.; Tostes, Raimundo A.; Bittencourt, Laura H.F.B.; Konell, Aline L.; Gruchouskei, Leonardo

    2012-01-01

    A dioctofimose é uma parasitose causada pelo Dioctophyma renale (Goeze, 1782) de ocorrência mundial e acomete animais domésticos e silvestres. Em março de 2010, um exemplar adulto (macho) de Galictis cuja (Molina, 1782), encontrado morto por atropelamento no município de Guaíra, Paraná foi encaminhado ao laboratório de Patologia Veterinária de Universidade Federal do Paraná (UFPR), Campus Palotina, para a realização da necropsia. O cadáver apresentava bom estado nutricional e autólise moderad...

  2. NEFRECTOMIA UNILATERAL EM CADELA PARASITADA POR Dioctophyma renale : RELATO DE CASO

    OpenAIRE

    Hermeto, Larissa; Mauad, Juliana Rosa Carrijo; Universidade Federal da Grande Dourados; Mattei, Douglas Rodrigo; Faculdade Anhanguera de Dourados; Ferrarezi, Ana Paula Ferreira; Faculdade Anhanguera de Dourados; Ventura, Arlene Sobrinho; Faculdade Anhanguera de Dourados

    2012-01-01

    O dioctophyma renale, conhecido como verme gigante renal é um nematóide de ocorrência mundialque parasita os rins, podendo ser encontrado na cavidade peritoneal e em outros órgãos do cão, e em outras espéciesde animais domésticos e silvestres, inclusive o homem. Foi atendida uma cadela sem raça definida, apresentandosecreção vaginal sanguinolenta persistente, neoformação vaginal, hiporexia e hematúria. Foram solicitados examescomplementares, e através da ultrassonografia abdominal foi detecta...

  3. Ecoturismo en la reserva Cuyabeno : realidad y retórica en la relación de los Siona con el turismo ecológico 1994

    OpenAIRE

    Arrueta, José Antonio

    1996-01-01

    El Turismo es una actividad que consiste básicamente en visitar lugares en donde buscamos satisfacer demandas relacionadas a información, diversión, conocimiento y placer. El turismo ecológico implica reglamentos de conducta de los visitantes, en relación a la preservación y conservación de los sitios naturales a silvestres que se visita. Incluye la participación de las poblaciones locales de los sitos de reserva como “beneficiarias” del ecoturismo. Estos "principios generales" del turismo ec...

  4. La arquitectura del hierro en España durante el siglo XIX

    OpenAIRE

    Navascués Palacio, Pedro; Calvo Serraller, Francisco

    1980-01-01

    Cuando el arquitecto neoclásico Silvestre Pérez, formado en la Academia de Bellas Artes y pensionado en Roma, recibe el encargo del ayuntamiento de Sevilla (1824) para hacer un proyecto de un puente sobre el Guadalquivir, éste se ve postergado al optarse por otro en hierro según se había experimentado ya en Inglaterra y Francia. Este hecho pone de relieve la forma violenta con que el hierro irrumpe en nuestra historia de la construcción, como fenómeno mimético, al margen de la lenta maduració...

  5. Detection and characterization of mango malformation and its causal agent in Spain

    OpenAIRE

    Crespo Palomo, María

    2014-01-01

    El mango (Mangifera indica L.) es un árbol originario de la región indobirmana, laderas del Himalaya y Sri Lanka, donde aún existen poblaciones silvestres y ha sido cultivado desde la antigüedad en la India como atestiguan las sagradas escrituras hindúes, los libros de los Vedas, redactadas entre el 1500 y el 1000 a. C. (Galán-Saúco, 2009). La dispersión del mango fue muy rápida por el subcontinente de la India y el archipiélago malayo con la apertura del comercio entre Asia y Europa. El mang...

  6. Aporte de serrapilheira e macronutrientes em diferentes ambientes naturais atingidos por incêndio

    OpenAIRE

    Coelho, Polyanne Aparecida

    2015-01-01

    A compreensão dos processos que mantêm os ecossistemas naturais sempre foi de grande interesse do homem. Ao longo do tempo, percebeu-se que a análise de tais processos fornece informações relevantes, que podem balizar tomadas de decisões ligadas à conservação e manejo da vida silvestre. Nesse sentido, os estudos ligados à serrapilheira fornecem informações valiosas sobre a vegetação e a capacidade do ecossistema em reciclar nutrientes e matéria orgânica. Entre os fatores que...

  7. Miologia do membro pélvico da paca (Cuniculus paca Linnaeus, 1766)

    OpenAIRE

    Leonardo M. Leal; Rafaela M. de Sá; Fabricio S. de Oliveira; Tais H.C. Sasahara; Bruno W. Minto; Marcia R.F. Machado

    2015-01-01

    Resumo: Objetivam-se descrever os músculos do membro pélvico da paca (Cuniculus paca Linnaeus, 1766), mediante dissecção anatômica dessa região. Foram utilizadas dez Cuniculus paca adultas, machos e fêmeas, pesando entre cinco e 10 kg do plantel de pacas do setor de Animais Silvestres da FCAV, Unesp, Jaboticabal/SP. Os animais foram fixados em formaldeído 10% e conservados em solução salina a 30% para dissecação anatômica da musculatura da pelve, coxa e perna, identificando-se a origem e inse...

  8. Estudo do papel funcional da cisteína sintase e da cistationina B-sintase na resposta ao estresse oxidativo e nitrosativo em leishmania (viannia) braziliensis, trypanosoma rangeli e trypanosoma cruzi

    OpenAIRE

    Romero Calderon, Ibeth Cristina

    2014-01-01

    Tese (doutorado) - Universidade Federal de Santa Catarina, Centro de Ciências Biológicas, Programa de Pós-Graduação em Biotecnologia e Biociências, Florianópolis, 2014 Leishmania (Viannia) braziliensis, Trypanosoma rangeli e o Trypanosoma cruzi são parasitos hemoflagelados pertencentes à Ordem Kinetoplastida, família Trypanosomatidae, capazes de infectar insetos, animais silvestres e domésticos, assim como o homem. Durante seu ciclo de vida, estes parasitos são expostos a uma grande quanti...

  9. Acción comunitaria frente al fenómeno del cambio climático, en el páramo de la región del Guavio, Cundinamarca, Colombia

    OpenAIRE

    Sonia Astrid Mendoza Velásquez; Juan Guillermo Cano Muñoz; Fabián Rojas Sánchez

    2015-01-01

    El municipio de Junín, Cundinamarca, Colombia, hace parte de la zona de amortiguamiento del Parque Nacional Natural Chingaza y se caracteriza por poseer una gran variedad de recursos naturales, abundante agua y bosques naturales; sin embargo, presenta un alto grado de contaminación del recurso hídrico y adicionalmente, se ha presentado extinción de la fauna y la flora silvestre, destrucción de los bosques por talas y quemas indiscriminadas. La presente investigación tiene el propósito de docu...

  10. Caracterización cromatográfica de pigmentos oculares en mutantes de Drosophila melanogaster (Diptera: Drosophilidae)

    OpenAIRE

    Duberney García García; Soraya Villalobos Hernández; William Usaquén Martínez

    2005-01-01

    Se reconocen los compuestos pteridínicos asociados con la pigmentación ocular del tipo silvestre y cuatro mutantes (Vermilion, Sepia, Plum y White) de Drosophila melanogaster, relacionando las rutas metabólicas de los pigmentos oculares y su modificación en la manifestación de la coloración ocular de cada mutante. Adicionalmente, se describe la ruta completa de biosíntesis de compuestos pteridínicos. La separación de pigmentos se realizó por medio de cromatografía en papel y el
    rev...

  11. LA SELECCIÓN NATURAL Y LOS CULTIVOS TRANSGENICOS: ¿UN HIATO DARWINISTA?.

    Directory of Open Access Journals (Sweden)

    Alejandro Chaparro Giraldo

    2009-10-01

    Full Text Available En diciembre del 2008, se reportaron 125 millones de hectáreas de variedades transgénicas de soya, maíz, algodón y canola, sembradas en 23 países de los cinco continentes.  Estas variedades fueron transformadas con genes de origen procariote, que les confieren la capacidad de resistir el ataque de insectos lepidópteros o tolerar dosis comerciales de herbicidas. Desde el inicio de la ingeniería genética, se ha planteado la cuestion de si estos organismos, liberados de manera masiva en los agroecosistemas, pueden causar efectos ambientales negativos en el mediano plazo, o efectos evolutivos desastrosos en el largo plazo. Una manera de analizar este problema, es considerar si pueden escapar a la selección natural darwinista, por el hecho de haberse introducido genes foráneos mediante manipulación humana. Para ello, se estudia la literatura disponible sobre el flujo de genes, desde los cultivos modificados hacía sus parientes silvestres estrechamente relacionados. Existe evidencia empírica de la hibridación entre  materiales mejorados por métodos convencionales (hibridación, retrocruces, selección o biotecnológicos (transferencia de genes foráneos y parientes silvestres estrechamente relacionados. En todo caso, los efectos de estas hibridaciones dependen de la interacción entre el gene transferido y el pariente silvestre, en el ecosistema particular en que ocurra.  El mayor efecto ambiental y evolutivo, es el resultado de la introgresión del transgene en el pariente silvestre, proceso que implica la estabilización del transgene en el genoma hospedero, resultado de sucesivas generaciones de hibridación y retrocruce. La introgresión depende mas de la naturaleza del gene, y del local que ocupa en el genoma donante, que del mecanismo de introducción en dicho parental. No se han reportado efectos negativos sobre la diversidad genética de las especies transformadas, ni sobre el ambiente o los consumidores. Los cultivos transg

  12. Producción de metabolitos secundarios en cultivo de raíces in vitro y suspensiones celulares de Ipomoea carnea spp. carnea Jacq.

    OpenAIRE

    Rojas Idrogo, Consuelo; Kato, Massuo J.; Delgado-Paredes, Guillermo E.; Segal Floh, Eny Iochevet; Handro, Walter

    2014-01-01

    Ipomoea carnea spp. carnea Jacq. es un arbusto dominante en el bosque estacionalmente seco del Perú y Ecuador. Los cultivos de raíces fueron establecidos en medio MS con diferentes concentraciones de AIB, sacarosa y combinaciones de AIB-sacarosa. Diversos explantes obtenidos de plántulas in vitro y plantas silvestres se cultivaron en diferentes combinaciones de 2,4-D, AIA, ANA y BAP, para inducir callos friables, dependiendo del tipo de explante y los reguladores de creci...

  13. Estudio citogenético de tres especies de guacamayas ( Ara clhoroptera , Ara ararauna y Ara macao en cautiverio, pruebas preliminares

    Directory of Open Access Journals (Sweden)

    C. Stelle

    2001-07-01

    Full Text Available Este trabajo busca presentar el primer reporte de bandeo cromosómico, en tres especies del género Ara encontradas en el territorio nacional; y así contribuir al conocimiento genotípico de la especie, el cual serviría en programas de conservación y reproducción en cautiverio o espacios abiertos controlados, y la posible aplicación metodológica a otras especies del mismo género. Así mismo, colaborar con el establecimiento de un banco de información genética en especies silvestres neotropicales.

  14. Estudio químico de los compuestos lipídicos de las hojas, tallos y flores de Vernonanthura patens (Kunth) H. Rob. (Asteraceae)

    OpenAIRE

    Manzano Santana, Patricia; Miranda Martínez, Migdalia; Montes de Oca Porto, Rodney; Orellana León, Tulio; Abreu Payrol, Juan; Peralta García, Esther L

    2013-01-01

    Introducción: Vernonanthura patens (Kunth) H. Rob. es una especie que crece silvestre en el Ecuador, para la cual existen escasos antecedentes de estudios químicos y biológicos, y en ninguno de estos se aborda el estudio de fracciones lipídicas. Objetivos: estudiar las fracciones de compuestos lipídicos presentes en las hojas, tallos y flores de la especie. Métodos: la planta se recolectó en estado adulto, en época de floración, los órganos vegetales fueron secados en estufa por separado, se ...

  15. 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...

  16. 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...

  17. External parasites of raptors (Falconiformes and Strigiformes): identification in an ex situ population from Mexico

    OpenAIRE

    de Oliveira, JaquelineB; Santos, Tiziano; Vaughan, Christopher; Santiago, Heber

    2011-01-01

    Raptorial birds harbor a variety of ectoparasites and the mayority of them are host specific. The aim of this study was to identify the ectoparasites of captive birds of prey from Mexico, as well as to verify their impact in the health of infested birds. Raptorial birds were confiscated and kept in captivity at the Centro de Investigación y Conservación de Vida Silvestre (CIVS) in Los Reyes La Paz, Mexico State. Seventy-four birds of prey (66 Falconiformes and eigth Strigiformes) of 15 specie...

  18. 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...

  19. DISTRIBUCIÓN ACTUAL Y ÁREAS PRIORITARIAS PARA LA CONSERVACIÓN DE PSITÁCIDOS EN EL PACÍFICO MEXICANO

    OpenAIRE

    Marín Togo, María Consuelo

    2012-01-01

    Entre las aves terrestres, la familia Psittacidae presenta el mayor número de especies en riesgo de extinción en el medio silvestre, tanto en México como globalmente. La fuerte presión que sufren por la acelerada pérdida de hábitat por el cambio de uso de suelo, y la elevada cantidad de organismos que son extraídos para satisfacer el mercado de mascotas son consideradas las principales causas. Por otra parte la falta de información sobre su distribución actual dificulta el dise...

  20. CARACTERIZACIÓN BROMATOLÓGICA Y MICROBIOLÓGICA DE CARNES PROCEDENTES DE ESPECIES DE ANIMALES REGIONALES DE LA AMAZONIA PERUANA PARA CONSUMO HUMANO

    OpenAIRE

    Lozano, Ronald; Pinedo, Weninger; Inga, Lylyams

    2012-01-01

    La investigación consistió en la caracterización bromatológica y determinación microbiológica de muestras de carnes procedentes de ocho especies de animales silvestres: huangana (Tayassu pecari), majaz o picuro (Agouti paca), sajino (Tayassu tajacu), venado colorado (Mazama americana), tapir (Tapirus terrestris), añuje (Dasyprota fuliginosa), ronsoco (Hydrochaeris hydrochaeris) y armadillo (Dasypus novemcinctus); en las localidades de Puerto Belén-Roya-Utucuro, Santa Rosa de Aguaytía, Santa L...

  1. Hongos asociados con el declinamiento de la manzanita Arctostaphylos pungens HBK en la Sierra Fría de Aguascalientes, México

    OpenAIRE

    Moreno-Rico, O.; Marmolejo-Monsivais, G.J.; Sánchez-Martínez, G.; Díaz-Moreno, R.; Luna-Ruíz, J.J.; Sosa-Ramírez, J.; Pérez-Hernández, K.J.; Moreno-Manzano, C.E.

    2015-01-01

    La manzanita (Arctostaphylos pungens) es un arbusto que se encuentra con regularidad en la Sierra Fría del estado de Aguascalientes, México. Este arbusto, al igual que otras plantas silvestres, es afectado por factores bióticos, como las enfermedades, que pueden causar desde daños insignificantes hasta la muerte de las plantas. Los objetivos de este trabajo fueron: 1) identificar los hongos relacionados con el declinamiento de la manzanita en la Sierra Fría de Aguascalientes y 2) conocer la i...

  2. Delincuencia organizada ambiental en México, una nueva manifestación criminal del tráfico de especies

    OpenAIRE

    Alvarado-Martínez, Israel

    2012-01-01

    El estudio arroja la presencia de grupos delictivos organizados en el territorio mexicano, que trafican con especies de fauna protegidas, valiéndose de las mismas rutas que utiliza el narcotráfico y, en muchas ocasiones, mediante la diversificación de actividades criminales, por lo que lo mismo trafican con personas, armas y drogas que con ejemplares de vida silvestre, y obtienen ganancias calculadas solo por debajo del tráfico ilícito de drogas. No obstante estas características, en la legis...

  3. Delincuencia organizada ambiental en México, una nueva manifestación criminal del trá co de especies

    OpenAIRE

    Israel Alvarado Martínez

    2012-01-01

    El estudio arroja la presencia de grupos delictivos organizados en el territorio mexicano, que trafican con especies de fauna protegidas, valiéndose de las mismas rutas que utiliza el narcotráfico y, en muchas ocasiones, mediante la diversificación de actividades criminales, por lo que lo mismo trafican con personas, armas y drogas que con ejemplares de vida silvestre, y obtienen ganancias calculadas solo por debajo del tráfico ilícito de drogas. No obstante estas características, en la legis...

  4. Registro de un ejemplar de Trachemys scripta elegans (Wied 1839) en la provincia de Jujuy, Argentina

    OpenAIRE

    Quiroga, María Fernanda; González Baffa Trasci, Noelia; Akmentins, Mauricio

    2015-01-01

    La tortuga de orejas rojas (Trachemys scripta elegans) es originaria del centro este de los Estados Unidos y noreste de México (Ernst, 1990), pero debido al comercio internacional de animales silvestres se ha convertido en un invasor biológico a nivel global. En Argentina, Trachemys scripta elegans ha sido reportada para dos localidades en la provincia de Buenos Aires y en ambos casos se trató del registro de individuos aislados, por lo que se desconoce si la tortuga de orejas rojas ha lograd...

  5. Efeitos do citrato de fentanila em Trachemys dorbigni (Duméril e Bibron, 1835) e Trachemys scripta elegans (Wied, 1839)

    OpenAIRE

    Kaminishi, árthur Paulino Sanzo

    2013-01-01

    Foram utilizados 30 animais, 15 Trachemys dorbigni e 15 Trachemys scripta elegans, com massa corporal variando de 0,750 a 1,800 kg, provenientes do acervo do Laboratório de Ensino e Pesquisa em Animais Silvestres - UFU (LAPAS). Cada espécie foi separada em dois grupos, sendo um experimental, com 10 animais, e outro controle, com cinco animais. Foi administrado citrato de fentanila 0,05 mg/kg aos grupos experimentais, e solução fisiológica 1 ml/kg aos grupos controle, todos por via subcutânea ...

  6. Biodiversidad de Chordata (Mammalia) en México

    OpenAIRE

    Sánchez-Cordero, Víctor; Botello, Francisco; Flores-Martínez, José Juan; Gómez-Rodríguez, Ruth A.; Guevara, Lázaro; Gutiérrez-Granados, Gabriel; Rodríguez-Moreno, Ángel

    2014-01-01

    Los mamíferos son uno de los grupos más conspicuos de las comunidades terrestres de vertebrados y muestran una serie de características internas y externas que los han llevado a ser exitosos en casi todos los ecosistemas del mundo. El objetivo de esta revisión es actualizar el estado de conocimiento de los mamíferos de México. En México los mamíferos forman un grupo altamente diverso, ubicando al país en el tercer lugar mundial con 564 especies silvestres, alcanzando aproximadamente el 10% de...

  7. Representações de luto e lamentação em fontes medievais peninsulares da Idade Média e início da Idade Moderna

    Directory of Open Access Journals (Sweden)

    Marta Miriam Ramos Dias

    2016-09-01

    Full Text Available This study intends to highlight  the depictions of mourning in written and iconographic sources from the late period of the Middle Ages. In the first part of this article, excerpts belonging to the synods, to the chronicles of Fernão Lopes and to the Siete Partidas of Alfonso X were analyzed regarding the ecclesiastical requirements and popular customs. In the second part, the tomb of Gomes Martins Silvestre and the painted planks from the tomb of Sancho Sáiz de Carrillo were also submitted to analysis.

  8. Caracterización preliminar de la lepidopterofauna (insecta: rophalocera) presente en la reserva privada: refugio del oso de anteojos (Calvario –Meta), Colombia

    OpenAIRE

    Ruth Castillo; Diana Cabrera; Elizabeth Lombana

    2011-01-01

    Ubicada en el piedemonte de la cordillera Oriental, la reserva privada: Refugio del Oso de Anteojos, se encuentra sujeta a presión antrópicalocal representada por deforestación, quemas,pastoreo y caza de fauna silvestre. Por tanto, es necesario conocer el estado de conservación de algunas áreas mediante el empleo de organismos bioindicadores como los Lepidopteros (Rhopalocera). Los muestreos se realizaron en los meses de mayo, junio, julio y septiembre de 2008, en cuatro zonas características...

  9. DIVERSIDAD DE LA FAMILIA POACEAE (GRAMINEAE) EN LA REGIÓN DEL BÍO-BÍO, CHILE, BASADA EN COLECCIONES DE HERBARIO

    OpenAIRE

    Finot, Víctor L; Marticorena, Clodomiro; Barrera, Juan A; Muñoz-Schick, Mélica; Negritto, María A

    2009-01-01

    La Región del Bío-Bío se encuentra en la zona sur de Chile central, considerado un hotspot de biodiversidad. Aunque es una región fuertemente intervenida por el hombre, principalmente por la agricultura, la forestación, la industrialización y la urbanización, tiene un bajo porcentaje de superficie protegida por el Sistema Nacional de Áreas Silvestres Protegidas del Estado (SNASPE). Por ello, documentar la biodiversidad de la región es una tarea ineludible. Se analizó la diversidad de la famil...

  10. Análisis econométrico del riesgo de extinción del las especies de fauna en Colombia: reptiles y peces dulceacuícolas

    OpenAIRE

    Fabio Alberto Arias Arbeláez

    2004-01-01

    El riesgo de extinción de una especie se estima por la evaluación del estado de deterioro de la población. Una especie silvestre y no extinta puede ser evaluada y clasificada como: en peligro crítico, en peligro, vulnerable, cuasiamenazada o de preocupación menor. En Colombia se ha realizado esta clasificación para algunos grupos de fauna y flora. En este trabajo se utiliza la información de la serie libros rojos de especies amenazadas de Colombia (reptiles y peces dulceacuícolas) para calcul...

  11. Registros de zopilote rey (Sarcoramphus papa) en el área de Laguna de Términos, Campeche, México

    OpenAIRE

    Mircea Hidalgo-Mihart; Fernando M. Contreras-Moreno; Luz A. Pérez-Solano

    2012-01-01

    Reportamos la presencia de dos individuos juveniles de zopilote rey, Sarcoramphus papa, en la Selva La Montaña localizada al suroeste del Área de Protección de Flora y Fauna Silvestre Laguna de Términos, Campeche, México. Realizamos el registro por medio de fotografías utilizando cámaras trampa. La presencia de esta especie protegida en el área evidencia la importancia que tiene la región de la Selva La Montaña para la conservación de la biodiversidad, especialmente para especies en peligro d...

  12. Attenuation Factors for B(E2) in the Microscopic Description of Multiphonon States ---A Simple Model Analysis---

    Science.gov (United States)

    Matsuyanagi, K.

    1982-05-01

    With an exactly solvable O(4) model of Piepenbring, Silvestre-Brac and Szymanski, we demonstrate that the attenuation factor for the B(E2) values, derived by the lowest-order approximation of the multiphonon method, takes excellent care of the kinematical anharmonicity effects, if multiphonon states are defined in the intrinsic subspace orthogonal to the pairing rotation. It is also shown that the other attenuation effect characterizing the interacting boson model is not a dominant effect in the model analysed here.

  13. Espíritos cheios de bichos: A fauna nas viagens de Louis Agassiz e Richard Francis Burton pelo Brasil oitocentista

    Directory of Open Access Journals (Sweden)

    Janaina Zito Losada

    2015-04-01

    Full Text Available O Brasil do século XIX foi alvo de inúmeras viagens realizadas por cientistas estrangeiros. O objetivo deste artigo é analisar as impressões sobre a fauna brasileira presentes nos relatos das viagens realizadas pelo naturalista suíço Louis Agassiz, em 1865, e pelo explorador inglês Richard Francis Burton, em 1868. Destes relatos privilegiam-se as descrições do meio natural de diferentes regiões brasileiras e das particularidades da fauna silvestre por eles encontrada.

  14. Attenuation factors for B(E2) in the microscopic description of multiphonon states

    International Nuclear Information System (INIS)

    Matsuyanagi, Kenichi

    1982-01-01

    With an exactly solvable O(4) model of Piepenbring, Silvestre-Brac and Szymanski, we demonstrate that the attenuation factor for the B(E2) values, derived by the lowest-order approximation of the multiphonon method, takes excellent care of the kinematical anharmonicity effects, if multiphonon states are defined in the intrinsic subspace orthogonal to the pairing rotation. It is also shown that the other attenuation effect characterizing the interacting boson model is not a dominant effect in the model analysed here. (author)

  15. Financial development and poverty reduction in emerging market economies

    Directory of Open Access Journals (Sweden)

    Bayar Yılmaz

    2017-01-01

    Full Text Available Poverty reduction is one of the key challenges in the globalized world. This study investigates the relationship between financial development and poverty reduction in emerging market economies during the period 1993- 2012. The Carrión-i-Silvestre, del Barrio-Castro, and López-Bazo (2005 panel unit root test and the Basher and Westerlund (2009 cointegration test was applied considering the cross-sectional dependence and multiple structural breaks in the study period. The findings indicated that financial development, including banking sector development and stock market development, had a significant positive impact on poverty reduction in emerging market economies.

  16. Cariotipo del tit? gris (Saguinus leucopus): similitudes con el cariotipo humano

    OpenAIRE

    Tabares, Juan Hember; Fierro, Carlos Humberto; Pulido, Paola Del Pilar; Ossa Reyes, Humberto

    2008-01-01

    El tit? gris (Saguinus leucopus) es un primate end?mico de Colombia cuyo cariotipo se describe en el presente estudio a partir de una pareja de individuos ubicados en el Centro de Rehabilitaci?n de Fauna Silvestre del Oriente de Caldas, Colombia. Las muestras de sangre fueron recolectadas de la vena femoral y anticoaguladas con heparina de sodio. Los cromosomas se obtuvieron por el m?todo cl?sico de cultivo de linfocitos y bandeamiento Q y G Los individuos presentan 46 cromosomas (2n = 46: 30...

  17. Respuesta al estrés por limitación de nitrógeno de plántulas de castilleja tenuiflora benth. cultivadas in vitro.

    OpenAIRE

    Cortes Morales, Jorge Alberto

    2016-01-01

    Castilleja tenuiflora Benth. (Orobanchaceae), es una planta medicinal silvestre que sintetiza diversos compuestos químicos como feniletanoides e iridoides glicosilados y flavonoides. El perfil químico de los cultivos in vitro de C. tenuiflora varía dependiendo de factores bióticos y de factores abióticos como el nitrógeno. El objetivo general de este trabajo fue evaluar la respuesta al estrés por limitación de nitrógeno de plántulas de C. tenuiflora cultivadas in vitro. Se cult...

  18. INNOVACION TECNOLOGICA Y COMERCIAL DE PRODUCTOS FORESTALES NO MADEREROS (PFNM) EN CHILE.

    OpenAIRE

    VALDEBENITO R., GERARDO

    2013-01-01

    Los Productos Forestales No Madereros (PFNM) son definidos por FAO como "bienes de origen biológico distinto de la madera, procedentes de los bosques, de otros terrenos arbolados y de árboles situados fuera de los bosques". Chile posee una gran cantidad de PFNM, los cuales han sido utilizados históricamente por nuestra población, destacando las especies que poseen propiedades medicinales, frutos silvestres y alimentos, entre otros bienes. Este rubro económico, a pesar de presentar bajos ni...

  19. 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.

  20. PROPAGACIÓN in vitro DE Geranium chilloense WILLD. EX KUNTH. PARA LA OBTENCIÓN DE PLANTAS COMPLETAS

    OpenAIRE

    Benavides, Thaly; Córdova, Adriana; Vaca, Ivonne

    2016-01-01

    Geranium chilloense Willd. ex Kunth es conocida con el nombre de Geranio de los Chillos, es una planta ornamental silvestre, nativa de Los Andes se encuentra distribuida en las quebradas del Distrito Metropolitano de Quito y forma parte de la historia de la flora nativa de Quito ya que ha sido descrita desde la expedición de Alexander Humboldt y Aimé Bonpland en 1802. El presente estudio presenta un protocolo de propagación in vitro de Geranium chilloense Willd. ex Kunth, para la ...

  1. Expressão do gene ASYMMETRIC LEAVES1 (AS1) em explantes radiculares de Passiflora edulis Sims e organogênese in vitro em Passiflora setacea D.C. (Passifloraceae)

    OpenAIRE

    Vieira, Lorena Melo

    2011-01-01

    O presente estudo teve como objetivos caracterizar a expressão do gene ASYMMETRIC LEAVES1 (AS1), via hibridização in situ, durante a regeneração in vitro de segmentos radiculares de Passiflora edulis Sims, espécie comercialmente cultivada, e estabelecer um protocolo reproduzível via organogênese in vitro em Passiflora setacea, espécie silvestre. Explantes radiculares de P. edulis foram cultivados em meio MS, para indução de organogênese de ramos, suplementado com 2,35 μM de BA. Para dete...

  2. Trophic ecology of the wild boar (Sus scrofa) in Chile

    OpenAIRE

    SKEWES, ÓSCAR; RODRÍGUEZ, ROBERTO; JAKSIC, FABIÁN M

    2007-01-01

    Documentamos la dieta del jabalí silvestre en el centro-sur de Chile basados en el examen de 20 estómagos colectados en los faldeos de volcán Mocho-Choshuenco (39°54' S, 72°02' O) y en el Parque Nacional Vicente Pérez Rosales (41°03' S, 71°54' O). La dieta está representada por animales, vegetales y hongos. Entre los vegetales y hongos son consumidas tanto las partes epígeas como hipógeas, lo mismo que frutos y semillas. Hongos y rizomas de Gunnera tinctoria constituyen ítemes vegetales cuant...

  3. THERMOTOLERANT Campylobacter SPECIES ISOLATED FROM PSITTACIFORMES IN THE PERUVIAN AMAZON REGION

    Directory of Open Access Journals (Sweden)

    Alvaro TRESIERRA-AYALA

    1998-07-01

    Full Text Available Foi determinada a freqüência de isolamento de campylobacters termotolerantes em Psittaciformes silvestres capturados na região amazônica do Peru. Campylobacters foram isolados em 10/142 (7.0% dos animais estudados, sendo C. jejuni subsp. jejuni biovar I (6/10 o mais freqüente, seguido de C. coli biovar II (2/10, C. lari não foi isolado. Os resultados sugerem que estas aves podem ser importantes reservatórios destas bactérias.

  4. Revisión de la producción, composición fitoquímica y propiedades nutracéuticas del orégano mexicano Revision of the production, phytochemical composition, and nutraceutical properties of Mexican oregano

    OpenAIRE

    Enrique García-Pérez; Castro-Álvarez Fernando Francisco; Janet Alejandra Gutiérrez-Uribe; Silverio García-Lara

    2012-01-01

    El orégano es una planta de distribución mundial, el cual está representado principalmente por dos especies: Origanum vulgare (Lamiaceace) nativo de Europa, y Lippia graveolens (Verbenaceae), originaria de América. México ocupa el segundo lugar como productor mundial de orégano con la especie L. graveolens H. B. K. Sin embargo, la mayoría de las especies explotadas son silvestres y su cultivo es aún tradicional y limitado. En este trabajo se presenta un análisis de las estrategias de propagac...

  5. “Diagnóstico Y Análisis De La Comercialización De Arroz Para Elaborar Una Alternativa De Mejorar La Rentabilidad De Los Productores De La Zona De Babahoyo”

    OpenAIRE

    VERA SUÁREZ, MARIBEL JESSENIA

    2012-01-01

    El cultivo del arroz comenzó hace casi 10.000 años en las regiones húmedas de Asia tropical y subtropical, posiblemente sea la India el país donde se cultivó por primera vez esta gramínea debido a que en ella abundaban los arroces silvestres. Pero el desarrollo del cultivo tuvo lugar en China, desde sus tierras bajas a sus tierras altas, probablemente hubo varias rutas por las cuales se introdujeron de Asia a otras partes del mundo. Este cultivo es el alimento básico para más de la mitad...

  6. A modification of QuEChERS method to analyse anticoagulant rodenticides using small blood samples

    OpenAIRE

    P Gómez-Ramírez; E Martínez-López; I Navas; P María-Mojica; AJ García-Fernández

    2012-01-01

    El uso de rodenticidas anticoagulantes es el método más frecuentemente utilizado para el control de plagas de roedores. Debido a sus características físico-químicas y particular mecanismo de acción, la utilización de estos compuestos en zonas rurales puede suponer un riesgo de intoxicación secundaria de sus depredadores. Para evaluar el riesgo a estos compuestos para la fauna silvestre, especialmente en aves rapaces que se alimentan de roedores, se llevan a cabo los programas de biomonitoriza...

  7. Estudo anatômico descritivo dos órgãos genitais masculinos do macaco-prego (Cebus apella Linnaeus, 1758)

    OpenAIRE

    Dulcinea Gonçalves Teixeira

    2005-01-01

    A Anatomia comparada de mamíferos é tema de grande interesse em pesquisas e tem como objetivo buscar conhecimentos que possam auxiliar o entendimento do binômio unidadevariedade. O conhecimento da Anatomia de qualquer animal silvestre é de importância capital para a sua preservação e proteção (RIBEIRO, 2002). Os primatas do novo mundo estão distribuídos na Região Neotropical das Américas Central e do Sul, (RYLANDS; MITTERMEIER; RODRÍGUEZ-LUNA, 1997). O Cebus apella, animal das matas do contin...

  8. Importancia y desafíos de la conservación de Vanilla spp. (orquidaceae) en Costa Rica

    OpenAIRE

    Azofeifa-Bolaños, José Bernal; Paniagua-Vásquez, Amelia; García-García, José Antonio

    2014-01-01

    El objetivo de este trabajo fue describir la importancia y los principales retos del uso, manejo y conservación del género Vanilla en Costa Rica. Los temas tratados fueron: taxonomía en el país y a nivel mundial, datos sobre recolección y nuevas estimaciones de parientes silvestres, la importancia económica, ecológica y social, el acervo genético de las especies costarricenses, la situación del cultivo a nivel mundial (área cosechada, producción, rendimiento, principales países productores), ...

  9. Heterosis en la longevidad de obreras Apis mielífera

    Directory of Open Access Journals (Sweden)

    J. Tello

    2001-07-01

    Full Text Available Se estimó la media y la heterosis de la longevidad en obreras de abejas Apis mellifera. El expe-rimento fue desarrollado en el Apiario del Departamento de Genética de la Facultad de Medi-cina de la USP-Ribeirão Preto-Brasil y en Jaboticabal-SP, de 03/1997 a 05/1999. Seleccionamos 8 matrices inseminadas del apiário-USP (2africanizadas, 2italianas, 2cárnicasy 2italianas*cárnicos y 2 matrices (grupo-testigo de abejas Africanizadas-Silvestres.

  10. Brote de rabia humana transmitida por gato en el municipio de Santander de Quilichao, Colombia, 2008

    OpenAIRE

    Paez, Andrés; Polo, Luis; Heredia, Damaris; Nuñez, Constanza; Rodriguez, Milena; Agudelo, Carlos; Parra, Edgar; Paredes, Andrea; Moreno, Teresa; Rey, Gloria

    2009-01-01

    Objetivos En marzo de 2008 ocurrió en el municipio de Santander de Quilichao- Cauca, Colombia, un brote de rabia de origen silvestre con 2 víctimas humanas. El presente artículo apunta a describir las técnicas diagnósticas de laboratorio, las acciones de investigación de campo y control de foco empleadas, y su significado epidemiológico e implicaciones en salud pública. Métodos La rabia se diagnosticó por inmunofluorescencia directa, prueba biológica en ratón, histopatología e inmunohistoquím...

  11. Consideraciones sobre la protección legal de la mancha húmeda

    OpenAIRE

    Hera Portillo, África de la; González Monterrubio, José Manuel; Llamas, Manuel Ramón

    2002-01-01

    La protección legal de los humedales resulta posible teóricamente en casi todos los casos, pues existen abundantes vías para conseguir tal objetivo, consistentes en la aplicación de diversas leyes: Ley del Suelo, Ley del Agua, Ley de la Conservación de los Espacios Naturales y de la Flora y Fauna Silvestre (LCENFFS), etc. Sin embargo, esta protección legal resulta poco eficaz desde el punto de vista hidrológico. Hasta el momento, la mayor parte de los mecanismos de protección legal de estos e...

  12. Placentação em cutias (Dasyprocta aguti, CARLETON, M.D.): aspectos morfológicos

    OpenAIRE

    Rodrigues, Rosângela Felipe; Miglino, Maria Angelica; Ferraz, Rosa Helena dos Santos; Morais-Pinto, Luciano de

    2003-01-01

    A cutia é um roedor silvestre, encontrado no sul da América Central e em regiões tropicais da América do Sul, principalmente nas regiões norte, nordeste e sudeste do Brasil. Estes animais fornecem proteína de origem animal e por isso, apresentam importância sócio-econômica para as regiões do norte e nordeste do Brasil. Para o presente trabalho foram utilizadas sete placentas de cutias (Dasyprocta aguti), em diferentes fases da gestação. Nos aspectos morfológicos a placenta da cutia apresenta ...

  13. Influência de hábitos antrópicos na dispersão de Triatoma pseudomaculata Corrêa & Espínola, 1964, através de Mimosa tenuiflora (Willdenow (Mimosaceae no Estado do Ceará, Brasil Influence of anthropic habits in the dispersion of Triatoma pseudomaculata Corrêa & Espínola, 1964 through Mimosa tenuiflora (Willdenow (Mimosaceae in the State of Ceará, Brazil

    Directory of Open Access Journals (Sweden)

    Simone Patrícia Carneiro Freitas

    2004-02-01

    Full Text Available Triatoma pseudomaculata foram capturados em entrecascas de Mimosa tenuiflora (jurema-preta em ecótopo silvestre de sete municípios do Estado do Ceará. Esta planta apresenta alta taxa de cobertura geográfica nas áreas de caatingas, sendo freqüentemente utilizada pela população rural. A presença de triatomíneos no peridomicílio, na região do Cariri, pode estar associada ao uso pela população da madeira de M. tenuiflora, quando trazida do ambiente silvestre, repleta de triatomíneos, facilitando conseqüentemente sua mobilização e dispersão.Triatoma pseudomaculata was captured in the phloem of the black acacia bush (Mimosa tenuiflora in seven municipalities in the State of Ceará, Brazil. This bush is widespread in the caatinga (scrub forest and is used extensively by the rural population for kindling. Peridomiciliary presence of triatomines in the Cariri region may be associated with the use of infested M. tenuiflora wood by the population, thus facilitating the triatomines' mobilization and dispersion.

  14. Presence of anti-Toxoplasma gondii, -Neospora caninum, -Leishmania spp. and -Ehrlichia canis antibodies in free-ranging maned wolves (Chrysocyon brachyurus in the northeastern region of the state of São Paulo, Brazil

    Directory of Open Access Journals (Sweden)

    Solange Oliveira

    2016-09-01

    Full Text Available O lobo-guará (Chrysocyon brachyurus habita o ecossistema de Cerrado e é considerado o maior canídeo da América do Sul e uma espécie ameaçada de extinção pela "International Union for Conservation of Nature" (IUNC. O objetivo desse estudo foi investigar a presença de anticorpos anti-Toxoplasma gondii, -Neospora caninum, -Leishmania spp. e -Ehrlichia canis em lobos-guará da região nordeste do estado de São Paulo, Brasil. Das 17 amostras de soro testadas por meio da reação de imunofluorescência indireta (RIFI, 88,2% (15/17, 17,6% (3/17 e 52,9% (9/17 apresentaram anticorpos anti-T. gondii, -Leishmania spp. e -E. canis, respectivamente. Todos os animais testados foram soronegativos para N. caninum. Esses resultados indicam a exposição dos lobos-guará dessa região aos agentes pesquisados. A presença de um complexo industrial, agricultura extensiva e fragmentação de habitat na região nordeste do estado de São Paulo, favorece a proximidade desses animais silvestres a ambientes urbanos o que pode contribuir para a transmissão de doenças entre os animais silvestres, domésticos e o homem.

  15. Los plaguicidas y la contaminacion del medio ambiente Venezolano

    Science.gov (United States)

    Stickel, L.F.; Stickel, W.H.

    1972-01-01

    RESUMEN DE RECOMENDACIONES Recomendaciones para el Programa de Investigacion: 1. Establecer un sistema de muestreo biologico para detectar los niveles tendencias de los productos quimicos toxicos en un peque?o numero de si tios representativos. 2. Mantener continua vigilancia de la contaminacion ambiental, mediante la seleccion acertadamente dirigida de las zonas afectadas y de las fuentes de contaminacion. 3. Realizar estudios acerca de las poblaciones de animales silvestres, y del exito de los procesos reproductivos de las especies o grupos clayes de animales que se consideran mas gravemente afectados. 4. Preparar recomendaciones para una accion gubernamental de proteccion al hombre, a la fauna silvestre y al medio ambiente. Recomendaciones para la Accion Administrativa: 1. Establecer limites a la tolerancia de los residuos de plaguicidas en los alimentos. Constituye una medida clave para disminuir la contaminacion ambiental. 2. Establecer normas de calidad del agua para las corrientes, represas, la gos y otros cuerpos. Es la segunda medida clave para reducir la contaminacion del ambiente 3. Exigir un tratamiento adecuado de los efluentes industriales, especialmente antes de que se construyan las nuevas plantas. 4. Exigir a los agricultores que en el uso de plaguicidas sigan los consejos tecnicos autorizados y negar a los vendedores el derecho a recomendar productos por su cuenta. 5. Tomar medidas para recoger y eliminar los recipientes y sobrantes de los plaguicidas.

  16. PLANTAS MEDICINALES USADAS POR LOS COGUI EN EL RÍO PALOMINO, SIERRA NEVADA DE SANTA MARTA (COLOMBIA

    Directory of Open Access Journals (Sweden)

    EDUINO CARBONÓ-DELAHOZ

    2013-12-01

    Full Text Available Con el propósito de registrar conocimientos tradicionales sobre plantas medicinales entre los Cogui o Kággaba en la cuenca del río Palomino, Sierra Nevada de Santa Marta (Colombia, se evaluó el uso de la flora con la aplicación de una técnica etnobotánica cuantitativa. Mediante entrevistas a mamos o sacerdotes-jefes, durante recorridos en áreas silvestres, cultivadas y huertos caseros en diferentes zonas climáticas de la cuenca, se obtuvo información de 189 especies utilizadas, incluidas en 162 géneros y 77 familias, así como el modo de uso y la forma de preparación para el tratamiento de enfermedades comunes. Las familias Asteraceae y Leguminosae registraron el mayor número de especies útiles. La evaluación con el índice de importancia relativa (IR permitió establecer que Ladenbergia moritziana (Rubiaceae, Stevia lucida (Asteraceae, Aniba sp. (Lauraceae, Erechtites hieracifolia (Asteraceae y Carex sp. (Cyperaceae son las especies con mayores valores de importancia. El 89 % de las plantas utilizadas es obtenido de espacios silvestres, lo que sugiere un conocimiento amplio de la diversidad vegetal local y el ejercicio de una práctica etnomédica.

  17. Delincuencia organizada ambiental en México, una nueva manifestación criminal del trá co de especies

    Directory of Open Access Journals (Sweden)

    Israel Alvarado Martínez

    2012-06-01

    Full Text Available El estudio arroja la presencia de grupos delictivos organizados en el territorio mexicano, que trafican con especies de fauna protegidas, valiéndose de las mismas rutas que utiliza el narcotráfico y, en muchas ocasiones, mediante la diversificación de actividades criminales, por lo que lo mismo trafican con personas, armas y drogas que con ejemplares de vida silvestre, y obtienen ganancias calculadas solo por debajo del tráfico ilícito de drogas. No obstante estas características, en la legislación mexicana no existe la regulación del tráfico de especies como una figura cometida por la delincuencia organizada, razón por la cual toda la gama de instrumentos excepcionales de investigación creados para investigar, perseguir y sancionar al crimen organizado no pueden emplearse para esta manifestación criminal del tráfico de ejemplares de vida silvestre. Se ha utilizado el método de análisis de contenidos referido a libros, revistas especializadas, notas periodísticas y documentos de Naciones Unidas, poniendo énfasis en los datos que arroja la comisión de delitos ambientales, mediante grupos delictivos organizados.

  18. Actividad inhibitoria del aceite esencial de Lippia origanoides H.B.K sobre el crecimiento de Phytophthora infestans

    Directory of Open Access Journals (Sweden)

    óscar Arango Bedoya

    2015-04-01

    Full Text Available Phytophthora infestans (Mont. de Bary es el fitopatógeno más perjudicial de la papa (Solanum tuberosum al causar la enfermedad conocida como ‘gota o tizón tardío’. El objetivo de este trabajo fue evaluar la actividad in vitro del aceite esencial obtenido de una especie de orégano silvestre (Lippia origanoides H.B.K. sobre Phytophthora infestans. Para el efecto se evaluaron diferentes concentraciones de este aceite esencial (10, 50, 100, 150, 200, 250 µg/ml y de un fungicida comercial usado como testigo. La actividad antifúngica se determinó con base en la evaluación del crecimiento del micelio mediante el método de dilución en agar tomate. A partir de una concentración de aceite de 150 µg/ml se inhibió completamente el crecimiento del patógeno, por lo que ésta fue considerada como la concentración letal. Este estudio demostró que el aceite esencial de orégano silvestre del Alto Patía, Colombia, es un potencial agente antifúngico que podría ser usado en sistemas de control integrado de P. infestans.

  19. Características epidemiológicas da febre amarela no Brasil, 2000-2012

    Directory of Open Access Journals (Sweden)

    Karina Ribeiro Leite Jardim Cavalcante

    Full Text Available OBJETIVO: o estudo visa descrever as características epidemiológicas da febre amarela no Brasil no período de 2000 a 2012. MÉTODOS: estudo epidemiológico, ecológico, descritivo, utilizando informações dos bancos de dados do Ministério da Saúde. RESULTADOS: foram confirmados 326 casos de febre amarela no país nesse período, com 156 óbitos e taxa de letalidade média de 47,8%; o grupo de adultos jovens do sexo masculino foi o mais acometido; nas epizootias, foi identificado um total de 2.856 primatas não humanos notificados com suspeita de febre amarela, 31,1% deles confirmados laboratorialmente; no período estudado, foi identificada expansão da área de transmissão silvestre da doença para regiões densamente povoadas, como Sul, Sudeste e Centro-Oeste. CONCLUSÃO: persiste o risco de transmissão urbana da febre amarela, pois a incidência silvestre da doença tem se expandido para regiões onde existe alta infestação do Aedes aegypti, mosquito transmissor do ciclo urbano da doença.

  20. Mitochondrial control region haplotypes of the South American sea lion Otaria flavescens (Shaw, 1800).

    Science.gov (United States)

    Artico, L O; Bianchini, A; Grubel, K S; Monteiro, D S; Estima, S C; Oliveira, L R de; Bonatto, S L; Marins, L F

    2010-09-01

    The South American sea lion, Otaria flavescens, is widely distributed along the Pacific and Atlantic coasts of South America. However, along the Brazilian coast, there are only two nonbreeding sites for the species (Refúgio de Vida Silvestre da Ilha dos Lobos and Refúgio de Vida Silvestre do Molhe Leste da Barra do Rio Grande), both in Southern Brazil. In this region, the species is continuously under the effect of anthropic activities, mainly those related to environmental contamination with organic and inorganic chemicals and fishery interactions. This paper reports, for the first time, the genetic diversity of O. flavescens found along the Southern Brazilian coast. A 287-bp fragment of the mitochondrial DNA control region (D-loop) was analyzed. Seven novel haplotypes were found in 56 individuals (OFA1-OFA7), with OFA1 being the most frequent (47.54%). Nucleotide diversity was moderate (π = 0.62%) and haplotype diversity was relatively low (67%). Furthermore, the median joining network analysis indicated that Brazilian haplotypes formed a reciprocal monophyletic clade when compared to the haplotypes from the Peruvian population on the Pacific coast. These two populations do not share haplotypes and may have become isolated some time back. Further genetic studies covering the entire species distribution are necessary to better understand the biological implications of the results reported here for the management and conservation of South American sea lions.

  1. Mitochondrial control region haplotypes of the South American sea lion Otaria flavescens (Shaw, 1800

    Directory of Open Access Journals (Sweden)

    L.O. Artico

    2010-09-01

    Full Text Available The South American sea lion, Otaria flavescens, is widely distributed along the Pacific and Atlantic coasts of South America. However, along the Brazilian coast, there are only two nonbreeding sites for the species (Refúgio de Vida Silvestre da Ilha dos Lobos and Refúgio de Vida Silvestre do Molhe Leste da Barra do Rio Grande, both in Southern Brazil. In this region, the species is continuously under the effect of anthropic activities, mainly those related to environmental contamination with organic and inorganic chemicals and fishery interactions. This paper reports, for the first time, the genetic diversity of O. flavescens found along the Southern Brazilian coast. A 287-bp fragment of the mitochondrial DNA control region (D-loop was analyzed. Seven novel haplotypes were found in 56 individuals (OFA1-OFA7, with OFA1 being the most frequent (47.54%. Nucleotide diversity was moderate (π = 0.62% and haplotype diversity was relatively low (67%. Furthermore, the median joining network analysis indicated that Brazilian haplotypes formed a reciprocal monophyletic clade when compared to the haplotypes from the Peruvian population on the Pacific coast. These two populations do not share haplotypes and may have become isolated some time back. Further genetic studies covering the entire species distribution are necessary to better understand the biological implications of the results reported here for the management and conservation of South American sea lions.

  2. Rozpadající se dvoukolka na blátivé cestě. Prostor domu v románu Carlose de Oliveiry Včela v dešti // A derelict barrow on a muddy road. Space of a house in the novel A Bee in the Rain

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    Karolina Válová

    2017-10-01

    Full Text Available The study offers an interpretation of the novel A Bee in the Rain (1953 from the perspective of a house. The novel is the last in the so-called Gandara tetralogy, a collection of neorealist prose which Carlos de Oliveira set in his childhood country, a poor and barren land of sand dunes in central Portugal. The house of the declining Silvestre family becomes a battleground between a man and a woman and in the end also between social classes. A barrow heavily making its way on a muddy road, in which the Silvestres are fighting for space, becomes a miniature of the house and a reflection of its fate. Next the house is compared to a beehive with a decaying swarm inside whose bees, blinded with spite, make bile instead of honey and spread it around. The neorealist level of the novel gives way to the symbolic level. The author works primarily with the symbols of honey, fire and gold, which he juxtaposes with the symbols bile, water and mud.

  3. Convergence in carbon dioxide emissions among industrialised countries revisited

    Energy Technology Data Exchange (ETDEWEB)

    Romero-Avila, Diego [Pablo de Olavide University, Department of Economics, Carretera de Utrera, Km. 1, 41089, Seville (Spain)

    2008-09-15

    This paper examines the existence of stochastic and deterministic convergence of carbon dioxide (CO{sub 2}) emissions in 23 countries over the period 1960-2002. For that purpose, we conduct unit root testing by employing the recently developed panel stationarity test of Carrion-i-Silvestre et al. [Carrion-i-Silvestre, J-L, del Barrio-Castro, T., Lopez-Bazo, E., 2005. Breaking the panels: An application to the GDP per capita. Econometrics Journal 8, 159-175] which assumes a highly flexible trend function by incorporating an unknown number of structural breaks. We accommodate general forms of cross-sectional dependence as well as control for finite-sample bias through bootstrap methods. Overall, our analysis provides strong evidence supporting both stochastic and deterministic convergence in CO{sub 2} emissions, thus confirming Strazicich and List [Strazicich, M.C., List, J.A., 2003. Are CO{sub 2} emission levels converging among industrial countries? Environmental and Resource Economics 24, 263-271] and Westerlund and Basher [Westerlund, J., Basher, S.A., 2007. Testing for convergence in carbon dioxide emissions using a century of panel data. Environmental and Resource Economics, forthcoming] findings of convergence. (author)

  4. Solanum Tuberíferos nuevos para Colombia - II

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    López Jaramillo Luis E.

    1986-06-01

    Full Text Available Durante los 174 años que han transcurrido desde la descripción del primer Solanum tuberífero silvestre de Colombia (VALENZUELA, 1809, se han descubierto en total 10 especies de papa silvestre en el país (CORRELL,1962; BTTTER,1913; OCHOA, 1978; LOPEZ-JARAMILLO, 1983. Esas especies son: Solanum andreanum Baker, S. colombianum Dun., S. estradae L. López J. S. flahaultii Bitt., S. qarciabarrigae Ochoa, S. lobbianum. Bitt., S. moscopanum. Hawkes, S. pamplonense L. Lopez J., S. papa Valenzuela y S. tuquerrense Hawkes. Las especies S. jublandifolium Dun. y S. ochranthum Dun., son comunes en Colombia, Perú y Venezuela y, aunque no son tuberíferas, están clasificadas dentro clel grupo por su morfología.El objeto cle esta publicación es describir una nueva especie proveniente del Departamento cle Santander. Se confirma así la sospecha de que aún quedan en Colombia especies tuberíferas nativas por descubrir. Estas especies están bajo amenaza de extinción debido a la rápida destrucción de los páramos que constituyen su hábitat natural.

  5. Convergence in carbon dioxide emissions among industrialised countries revisited

    International Nuclear Information System (INIS)

    Romero-Avila, Diego

    2008-01-01

    This paper examines the existence of stochastic and deterministic convergence of carbon dioxide (CO 2 ) emissions in 23 countries over the period 1960-2002. For that purpose, we conduct unit root testing by employing the recently developed panel stationarity test of Carrion-i-Silvestre et al. [Carrion-i-Silvestre, J-L, del Barrio-Castro, T., Lopez-Bazo, E., 2005. Breaking the panels: An application to the GDP per capita. Econometrics Journal 8, 159-175] which assumes a highly flexible trend function by incorporating an unknown number of structural breaks. We accommodate general forms of cross-sectional dependence as well as control for finite-sample bias through bootstrap methods. Overall, our analysis provides strong evidence supporting both stochastic and deterministic convergence in CO 2 emissions, thus confirming Strazicich and List [Strazicich, M.C., List, J.A., 2003. Are CO 2 emission levels converging among industrial countries? Environmental and Resource Economics 24, 263-271] and Westerlund and Basher [Westerlund, J., Basher, S.A., 2007. Testing for convergence in carbon dioxide emissions using a century of panel data. Environmental and Resource Economics, forthcoming] findings of convergence

  6. El cromo (VI Induce la frecuencia de mutación y pérdida de Heterocigocidad En Saccharomyces cerevisiae

    Directory of Open Access Journals (Sweden)

    Gustavo Santoyo

    2018-01-01

    Full Text Available El cromo (Cr es uno de los principales contaminantes en desechos industriales, asociado con diversos daños a la saludhumana, motivo por el que en este trabajo analizamos el efecto del Cr hexavalente sobre la frecuencia de mutaciónespontánea (utilizando el gen reporteroCAN1 y la pérdida de heterocigocidad en la levaduraSaccharomycescerevisiae. Se comparó su efecto en una mutante en el genrev3, que codifica para la polimerasa zeta. Los resultadossugieren que el Cr(VI puede inducir la frecuencia de mutación entre 20 y 28 veces, a concentraciones de 25 y 50mM, respectivamente eincrementarse en una mutanterev3y aunque no se observaron los mismos niveles como enla cepa silvestre, esto sugiere que, además derev3, existen otros factores que inducen la aparición de mutacionesen el marcador empleado. El Cr también tuvo un efecto al aumentar la pérdida de heterocigocidad de entre 50 y57 veces en la cepa silvestre y la mutanterev3, respectivamente. Estos resultados muestran queREV3participa en elefecto mutagénico causado por el Cr(VI, pero no en la pérdida de heterocigocidad, en las células de la levadura.

  7. Informe sobre una investigación entomológica realizada en Colombia

    Directory of Open Access Journals (Sweden)

    P. C. A. Antunes

    1937-03-01

    Full Text Available La investigación entomológica cuyo informe presentamos, se realizó en los municipios de Restrepo y Villavicencio, Intendencia del Meta, Colombia, del 12 de diciembre de 1934 al 30 de marzo de 1935 y coincidió con un brote epidémico de fiebre amarilla silvestre. Solamente sufrieron la fiebre personas residentes fuéra de las poblaciones. Ninguna infección fue adquirida dentro de éIlas. La poblaciones cabeceras de los municipios de Restrepo y Villa vicencio, hálIanse situadas al pie de la vertiente oriental de la Cordillera de los Andes, entre ésta y las grandes llanuras que al Oriente se dilatan hasta las fronteras con el Brasil y Venezuela. Junto a VilIavicencio y cortando el camino que lo une a Restrepo, corre el Río Guatiquía, Durante el período de la investigación ningún caso de fiebre amarilla se registró en el área de la margen derecha de este río, pero posteriormente se ha comprobado la presencia de fiebre amarilla silvestre en ambas márgenes del Guatiquía indistintamente. La epidemia en cuestión abarcó una extensa zona en el municipio de Restrepo, y en el de Villavicencio, apenas la vereda El Retiro sobre la margen izquierda del Guatiquía.

  8. Whitefly species (Hemiptera: Aleyrodidae on wild and cultivated plants in the horticultural region of Rosario, Santa Fe, Argentina

    Directory of Open Access Journals (Sweden)

    Gustavo G. GONSEBATT

    2012-01-01

    Full Text Available Las moscas blancas de importancia económica son polífagas y capaces de desarrollarse sobre numerosas plantas cultivadas y espontáneas. Registramos las especies de moscas blancas sobre cultivos hortícolas y de flores, y sobre las plantas silvestres asociadas. Observamos dos especies: Trialeurodes vaporariorum (Westwood y el complejo Bemisia tabaci (Gennadius. T. vaporariorum fue registrada sobre 24 especies de plantas (11 familias, 12 y 8 de las cuales son hospedantes nuevos para Argentina y a nivel mundial, respectivamente. El complejo B. tabaci fue registrado solo en sistemas de producción de flores, sobre 19 especies de plantas (11 familias, 14 y 7 de las cuales son nuevos hospedantes para Argentina y a nivel mundial, respectivamente. Los cultivos Glycine max (L. y Chrysanthemum morifolium Ramat., las especies silvestres Amaranthus blitum L., Amaranthus quitensis Kunth, Conyza bonariensis (L., Galinsoga parviflora Cav., Sonchus oleraceus L. y Wedelia glauca (Ortega O. Hoffm. ex Hicken fueron hospedantes de ambas especies. El único parasitoide registrado fue Eretmocerus californicus cercano a corni Haldeman (Hymenoptera: Aphelinidae sobre T. vaporariorum. Este estudio que constituye el primer relevamiento sistemático de plantas hospedantes en la región, aporta un mayor conocimiento sobre el rango de plantas hospedantes de las moscas blancas en Argentina.

  9. Didelphis marsupialis como un reservorio potencial u hospedero amplificador del virus de la estomatitis vesicular, serotipo new jersey en Antioquia

    Directory of Open Access Journals (Sweden)

    John Arboleda

    2004-02-01

    Full Text Available

    La Estomatitis Vesicular (EV es una enfermedad viral, aguda
    y autolimitante que afecta principalmente bovinos, equinos y
    porcinos. Es producida por el virus de estomatitis vesicular (VEV, serotipos New Jersey (VEV-NJ e Indiana (VEV-IN, que son los as importantes epidemiológicamente (1. Los estudios serológicos demuestran que VEV-NJ y VEV-IN infectan en forma natural una gran variedad de animales silvestres, que están posiblemente implicados en la  coepizootiología de la EV, como hospederos portadores, mplificadores o reservorios (2.

    La zarigüeya (Didelphis marsupialis es un buen candidato
    para cumplir esta función, debido a que es la especie silvestre
    mayormente capturada en zonas enzoóticas; presenta altos
    porcentajes de infección natural (3, resiste la antropización y
    además, su comportamiento le permite interactuar con
    diferentes poblaciones de vectores u otros reservorios en los
    bosques y servir como fuente de infección para las especies
    domésticas susceptibles.

     

     

  10. Investigación de vectores y reservorios en brote de Chagas agudo por posible transmisión oral en Aguachica, Cesar, Colombia

    Directory of Open Access Journals (Sweden)

    Hugo Soto

    2014-04-01

    Full Text Available Colombia tiene un registro de 11 casos de Chagas agudo y 80 casos por contaminación oral con Trypanosoma cruzi. Este trabajo analiza los hallazgos entomológicos y parasitológicos del brote de Aguachica, Cesar, en 2010. Un grupo interdisciplinario de profesionales de la salud y de universidades regionales realizó las pruebas de laboratorio a los pacientes y el estudio del foco de transmisión. Se detectaron 11 casos agudos de enfermedad de Chagas en una sola familia con vivienda sin triatominos domiciliados y, Rhodnius pallescens, Pantrongylus geniculatus, Eratyrus cuspidatus y dos Didelphis marsupialis infectados con T. cruzi en palmas de Attalea butyracea y Elaeis oleifera del área urbana de Aguachica. Se analiza la participación del R. pallescens y el rol de las palmas en el ciclo silvestre de T. cruzi y para la transmisión oral de la enfermedad de Chagas. Incursiones esporádicas de R. pallescens, P. geniculatus y E. cuspidatus silvestres desde palmas cercanas al domicilio humano pueden provocar brotes cada vez más frecuentes de Chagas oral.

  11. Dosis diagnóstica y umbral de resistencia de Lutzomyia evansi (Diptera: Psychodidae, a dos insecticidas utilizados en salud pública en Colombia: deltametrina y lambdacihalotrina

    Directory of Open Access Journals (Sweden)

    Caterine HENRIQUEZ

    2009-01-01

    Full Text Available Los insecticidas son una herramienta importante para el control de los insectos transmisores de microorganismos patógenos. El objetivo de este estudio fue determinar la dosis diagnóstica de deltametrina y lambdacihalotrina en el flebotomíneo Lutzomyia evansi (Núñez-Tovar, vector de Leishmania infantum en Colombia. Los insectos se recolectaron en la Estación Experimental de Fauna Silvestre de Colosó, Sucre, un área de reserva natural que no ha sido sometida a presión con insecticidas. Los bioensayos se realizaron en botellas de vidrio, siguiendo el método simplificado de determinación de resistencia del CDC. En los experimentos, se usaron hembras silvestres de L. evansi que fueron expuestas a diferentes concentraciones de los insecticidas por espacio de 80 minutos, tiempo de duración de la prueba. Los valores de dosis diagnóstica hallados fueron 0,00035% para lambdacihalotrina y 0,0007% para deltametrina, con un umbral de resistencia de diez minutos para ambos insecticidas, tiempo en el cual se alcanza una mortalidad del 100%. Los datos de tiempo-mortalidad indican que la lambdacihalotrina tiene un efecto letal sobre L. evansi en menor concentración que la deltametrina, mientras que la última fue menos tóxica.

  12. 2016 Guidelines of the American Society of Mammalogists for the use of wild mammals in research and education.

    Science.gov (United States)

    Sikes, Robert S

    2016-06-09

    Guidelines for use of wild mammal species in research are updated from Sikes et al. (2011) . These guidelines cover current professional techniques and regulations involving the use of mammals in research and teaching; they also incorporate new resources, procedural summaries, and reporting requirements. Included are details on capturing, marking, housing, and humanely killing wild mammals. It is recommended that Institutional Animal Care and Use Committees (IACUCs), regulatory agencies, and investigators use these guidelines as a resource for protocols involving wild mammals, whether studied in the field or in captivity. These guidelines were prepared and approved by the American Society of Mammalogists (ASM), in consultation with professional veterinarians experienced in wildlife research and IACUCs, whose collective expertise provides a broad and comprehensive understanding of the biology of nondomesticated mammals. The current version of these guidelines and any subsequent modifications are available online on the Animal Care and Use Committee page of the ASM website ( http://mammalogy.org/uploads/committee_files/CurrentGuidelines.pdf ). Additional resources pertaining to the use of wild animals in research are available at: http://www.mammalsociety.org/committees/animal-care-and-use#tab3 . Los lineamientos para el uso de especies de mamíferos de vida silvestre en la investigación con base en Sikes et al. (2011) se actualizaron. Dichos lineamientos cubren técnicas y regulaciones profesionales actuales que involucran el uso de mamíferos en la investigación y enseñanza; también incorporan recursos nuevos, resúmenes de procedimientos y requisitos para reportes. Se incluyen detalles acerca de captura, marcaje, manutención en cautiverio y eutanasia de mamíferos de vida silvestre. Se recomienda que los comités institucionales de uso y cuidado animal (cifras en inglés: IACUCs), las agencias reguladoras y los investigadores se adhieran a dichos lineamientos

  13. 2016 Guidelines of the American Society of Mammalogists for the use of wild mammals in research and education

    Science.gov (United States)

    Sikes, Robert S.

    2016-01-01

    Abstract Guidelines for use of wild mammal species in research are updated from Sikes et al. (2011) . These guidelines cover current professional techniques and regulations involving the use of mammals in research and teaching; they also incorporate new resources, procedural summaries, and reporting requirements. Included are details on capturing, marking, housing, and humanely killing wild mammals. It is recommended that Institutional Animal Care and Use Committees (IACUCs), regulatory agencies, and investigators use these guidelines as a resource for protocols involving wild mammals, whether studied in the field or in captivity. These guidelines were prepared and approved by the American Society of Mammalogists (ASM), in consultation with professional veterinarians experienced in wildlife research and IACUCs, whose collective expertise provides a broad and comprehensive understanding of the biology of nondomesticated mammals. The current version of these guidelines and any subsequent modifications are available online on the Animal Care and Use Committee page of the ASM website ( http://mammalogy.org/uploads/committee_files/CurrentGuidelines.pdf ). Additional resources pertaining to the use of wild animals in research are available at: http://www.mammalsociety.org/committees/animal-care-and-use#tab3 . R esumen Los lineamientos para el uso de especies de mamíferos de vida silvestre en la investigación con base en Sikes et al. (2011) se actualizaron. Dichos lineamientos cubren técnicas y regulaciones profesionales actuales que involucran el uso de mamíferos en la investigación y enseñanza; también incorporan recursos nuevos, resúmenes de procedimientos y requisitos para reportes. Se incluyen detalles acerca de captura, marcaje, manutención en cautiverio y eutanasia de mamíferos de vida silvestre. Se recomienda que los comités institucionales de uso y cuidado animal (cifras en inglés: IACUCs), las agencias reguladoras y los investigadores se adhieran a

  14. Non-legalized commerce in game meat in the Brazilian Amazon: a case study

    Directory of Open Access Journals (Sweden)

    Pedro Chaves Baía Júnior

    2010-09-01

    Full Text Available In tropical forests, wild game meat represents an option or the only protein source for some human populations. This study analyzed the wildlife meat trade destined to human consumption in an open market of the Amazon rainforest, Brazil. Wildlife meat trade was monitored during 2005 through interviews to vendors and consumers in order to evaluate the socioeconomic profile of the sellers, the main species and byproducts sold, their geographical origin, commercial value, frequency of sale and product demand. Data indicated that vendors were financially highly dependant of this activity, getting a monthly income up to US$271.49. During the survey, the amount of wildlife meat on sale added a total of 5 970kg, as follows: 63.2% capybara (Hydrochoerus hydrochaeris, 34.4% cayman (Melanosuchus niger and/or Caiman crocodilus crocodilus, 1.1% paca (Cuniculus paca; 0.6% armadillo (Dasypus novemcinctus, 0.5% deer (Mazama americana, 0.2% matamata (Chelus fimbriatus, and 0.1% opossum (Didelphis marsupialis. Most of the commercialized species were not slaughtered locally. The consumption of wildlife meat was admitted by 94% of the interviewed, consisting of 27 ethno-species: 19 mammals, 6 reptiles, and 2 birds. The same percentage of the interviewed (94% already bought wildlife meat of 18 species: 12 mammals and 6 reptiles. The great amount of wildlife meat traded and the important demand for these products by the local population, point out the necessity to adopt policies for a sustainable management of cinegetic species, guaranteeing the conservation of the environment, the improvement of living standards, and the maintenance of the local culture. Rev. Biol. Trop. 58 (3: 1079-1088. Epub 2010 September 01.En los bosques tropicales, el consumo de carne silvestre representa una opción o la única fuente de proteínas para algunas poblaciones humanas. Este estudio analizó el comercio ilegal de carne de animales silvestres con fines alimenticios en un mercado

  15. Evaluating indices of lipid and protein content in lesser snow and Ross's geese during spring migration

    Science.gov (United States)

    Webb, Elisabeth B.; Fowler, Drew N.; Woodall, Brendan A.; Vrtiska, Mark P.

    2018-01-01

    Assessing nutrient stores in avian species is important for understanding the extent to which body condition influences success or failure in life‐history events. We evaluated predictive models using morphometric characteristics to estimate total body lipids (TBL) and total body protein (TBP), based on traditional proximate analyses, in spring migrating lesser snow geese (Anser caerulescens caerulescens) and Ross's geese (A. rossii). We also compared performance of our lipid model with a previously derived predictive equation for TBL developed for nesting lesser snow geese. We used external and internal measurements on 612 lesser snow and 125 Ross's geese collected during spring migration in 2015 and 2016 within the Central and Mississippi flyways to derive and evaluate predictive models. Using a validation data set, our best performing lipid model for snow geese better predicted TBL (root mean square error [RMSE] of 23.56) compared with a model derived from nesting individuals (RMSE = 48.60), suggesting the importance of season‐specific models for accurate lipid estimation. Models that included body mass and abdominal fat deposit best predicted TBL determined by proximate analysis in both species (lesser snow goose, R2 = 0.87, RMSE = 23.56: Ross's geese, R2 = 0.89, RMSE = 13.75). Models incorporating a combination of external structural measurements in addition to internal muscle and body mass best predicted protein values (R2 = 0.85, RMSE = 19.39 and R2 = 0.85, RMSE = 7.65, lesser snow and Ross's geese, respectively), but protein models including only body mass and body size were also competitive and provided extended utility to our equations for field applications. Therefore, our models indicated the importance of specimen dissection and measurement of the abdominal fat pad to provide the most accurate lipid estimates and provide alternative dissection‐free methods for estimating protein.

  16. Hepatic microsomal metabolism of BDE-47 and BDE-99 by lesser snow geese and Japanese quail.

    Science.gov (United States)

    Krieger, Lisa K; Szeitz, András; Bandiera, Stelvio M

    2017-09-01

    In the present study, we investigated the oxidative biotransformation of 2,2',4,4'-tetrabromodiphenyl ether (BDE-47) and 2,2',4,4',5-pentabromodiphenyl ether (BDE-99) by liver microsomes from wild lesser snow geese (Chen caerulescens caerulescens) and domesticated Japanese quail (Coturnix japonica). Formation of hydroxy-metabolites was analyzed using an ultra-high performance liquid chromatography-tandem mass spectrometry-based method. Incubation of BDE-47 with avian liver microsomes produced sixteen hydroxy-metabolites, eight of which were identified using authentic standards. The major metabolites formed by liver microsomes from individual lesser snow geese were 4-hydroxy-2,2',3,4'-tetrabromodiphenyl ether (4-OH-BDE-42), 3-hydroxy-2,2',4,4'-tetrabromodiphenyl ether (3-OH-BDE-47), and 4'-hydroxy-2,2',4,5'-tetrabromodiphenyl ether (4'-OH-BDE-49). By comparison, 4-OH-BDE-42 and 4'-OH-BDE-49, but not 3-OH-BDE-47, were major metabolites of Japanese quail liver microsomes. Unidentified metabolites included monohydroxy- and dihydroxy-tetrabromodiphenyl ethers. Incubation of BDE-99 with avian liver microsomes produced seventeen hydroxy-metabolites, twelve of which were identified using authentic standards. The major metabolites formed by lesser snow goose liver microsomes were 2,4,5-tribromophenol, 3-OH-BDE-47, 4'-OH-BDE-49, 4-hydroxy-2,2',3,4',5-pentabromodiphenyl ether (4-OH-BDE-90), and 5'-hydroxy-2,2',4,4',5-pentabromodiphenyl ether (5'-OH-BDE-99). By comparison, the major metabolites produced by liver microsomes from Japanese quail included 6-hydroxy-2,2',4,4'-tetrabromodiphenyl ether (6-OH-BDE-47) and 2-hydroxy-2',3,4,4',5-pentabromodiphenyl ether (2-OH-BDE-123), but not 3-OH-BDE-47. Unidentified metabolites consisted of monohydroxy-pentabromodiphenyl ethers, monohydroxy-tetrabromodiphenyl ethers and dihydroxy-tetrabromodiphenyl ethers. Another difference between the two species was that formation rates of BDE-47 and BDE-99 metabolites were greater with liver

  17. Divergent biology of facultative heavy metal plants.

    Science.gov (United States)

    Bothe, Hermann; Słomka, Aneta

    2017-12-01

    Among heavy metal plants (the metallophytes), facultative species can live both in soils contaminated by an excess of heavy metals and in non-affected sites. In contrast, obligate metallophytes are restricted to polluted areas. Metallophytes offer a fascinating biology, due to the fact that species have developed different strategies to cope with the adverse conditions of heavy metal soils. The literature distinguishes between hyperaccumulating, accumulating, tolerant and excluding metallophytes, but the borderline between these categories is blurred. Due to the fact that heavy metal soils are dry, nutrient limited and are not uniform but have a patchy distribution in many instances, drought-tolerant or low nutrient demanding species are often regarded as metallophytes in the literature. In only a few cases, the concentrations of heavy metals in soils are so toxic that only a few specifically adapted plants, the genuine metallophytes, can cope with these adverse soil conditions. Current molecular biological studies focus on the genetically amenable and hyperaccumulating Arabidopsis halleri and Noccaea (Thlaspi) caerulescens of the Brassicaceae. Armeria maritima ssp. halleri utilizes glands for the excretion of heavy metals and is, therefore, a heavy metal excluder. The two endemic zinc violets of Western Europe, Viola lutea ssp. calaminaria of the Aachen-Liège area and Viola lutea ssp. westfalica of the Pb-Cu-ditch of Blankenrode, Eastern Westphalia, as well as Viola tricolor ecotypes of Eastern Europe, keep their cells free of excess heavy metals by arbuscular mycorrhizal fungi which bind heavy metals. The Caryophyllaceae, Silene vulgaris f. humilis and Minuartia verna, apparently discard leaves when overloaded with heavy metals. All Central European metallophytes have close relatives that grow in areas outside of heavy metal soils, mainly in the Alps, and have, therefore, been considered as relicts of the glacial epoch in the past. However, the current

  18. Winter fidelity and apparent survival of lesser snow goose populations in the Pacific flyway

    Science.gov (United States)

    Williams, C.K.; Samuel, M.D.; Baranyuk, Vasily V.; Cooch, E.G.; Kraege, Donald K.

    2008-01-01

    The Beringia region of the Arctic contains 2 colonies of lesser snow geese (Chen caerulescens caerulescens) breeding on Wrangel Island, Russia, and Banks Island, Canada, and wintering in North America. The Wrangel Island population is composed of 2 subpopulations from a sympatric breeding colony but separate wintering areas, whereas the Banks Island population shares a sympatric wintering area in California, USA, with one of the Wrangel Island subpopulations. The Wrangel Island colony represents the last major snow goose population in Russia and has fluctuated considerably since 1970, whereas the Banks Island population has more than doubled. The reasons for these changes are unclear, but hypotheses include independent population demographics (survival and recruitment) and immigration and emigration among breeding or wintering populations. These demographic and movement patterns have important ecological and management implications for understanding goose population structure, harvest of admixed populations, and gene flow among populations with separate breeding or wintering areas. From 1993 to 1996, we neckbanded molting birds at their breeding colonies and resighted birds on the wintering grounds. We used multistate mark-recapture models to evaluate apparent survival rates, resighting rates, winter fidelity, and potential exchange among these populations. We also compared the utility of face stain in Wrangel Island breeding geese as a predictor of their wintering area. Our results showed similar apparent survival rates between subpopulations of Wrangel Island snow geese and lower apparent survival, but higher emigration, for the Banks Island birds. Males had lower apparent survival than females, most likely due to differences in neckband loss. Transition between wintering areas was low (exchange between the Banks and northern Wrangel Island populations. Face staining was an unreliable indicator of wintering area. Our findings suggest that northern and southern

  19. Comparative spring-staging ecology of sympatric arctic-nesting geese in south-central Nebraska

    Science.gov (United States)

    Pearse, Aaron T.; Krapu, Gary L.; Cox, Robert R.

    2013-01-01

    The Rainwater Basin in Nebraska has been a historic staging area for midcontinent greater white-fronted geese (Anser albifrons frontalis) since the 1950s and, in the mid-1990s, millions of midcontinent lesser snow geese (Chen caerulescens caerulescens) expanded their spring migration route to include this region. In response to speculation that snow geese may be in direct competition with white-fronted geese, we compared staging ecology by quantifying diet, habitat use, movement patterns, and time budgets during springs 1998–1999. Collected white-fronted geese (n  =  190) and snow geese (n  =  203) consumed primarily corn (Zea mays; 97–98% aggregate dry mass) while staging in Nebraska; thus, diet overlap was nearly complete. Both species used cornfields most frequently during the morning (54–55%) and wetlands more during the afternoon (51–65%). When found grouped together, snow goose abundance was greater than white-fronted goose abundance by an average of 57 times (se  =  11, n  =  131 groups) in crop fields and 28 times (se  =  9, n  =  84 groups) in wetlands. Snow geese and white-fronted geese flew similar distances between roosting and feeding sites, leaving and returning to wetland roost sties at similar times in mornings and afternoons. Overlap in habitat-specific time budgets was high; resting was the most common behavior on wetlands, and foraging was a common behavior in fields. We observed 111 interspecific agonistic interactions while observing white-fronted and snow geese. White-fronted geese initiated and dominated more interactions with other waterfowl species than did snow geese (32 vs. 14%). Certain aspects of spring-staging niches (i.e., diet, habitat use, movement patterns, and habitat-specific behavior) of white-fronted and snow geese overlapped greatly at this mid-latitude staging site, creating opportunity for potential food- and habitat-based competition between species. Snow geese did not consistently dominate

  20. Ecologia de triatomíneos e transmissão do Trypanosoma cruzi, com especial referência ao Brasil

    Directory of Open Access Journals (Sweden)

    Mauro Pereira Barreto

    1976-12-01

    Full Text Available Com base em seu comportamento ecológico e seu grau de relacionamento com o homem e os mamíferos domésticos, comensais e sinantrópicos, os triatomíneos são distribuídos em seis grupos: 1 Triatomíneos tipicamente silvestres, isto é, espécies só encontradas em ecótopos naturais e que nunca freqüentam as habitações humanas e suas dependências. Conseqüentemente, nunca entram em contacto com o homem e os mamíferos domésticos, a não ser acidentalmente quando estes penetram nos focos naturais. Entretanto, podem ter papel maior ou menor na manutenção da enzootia tripanossômica silvestre. Exemplos: Psammolestes coreodes, Psammolestes tertius, Cavernicola pilosa, Triatoma dispar, Triatoma delpontei e muitas outras espécies cujos hábitos são pouco conhecidos. 2 Triatomíneos essencialmente silvestres cujos adultos invadem, com maior ou menor freqüência, as habitações humanas e suas dependências, sem, todavia, aqui se colonizar. Além do papel que têm no ciclo silvestre de transmissão do T. cruzi, podem, ao entrar em contacto com o homem e os mamíferos domésticos e domiciliados suscetíveis, transmitir-lhes a infecção, tanto em áreas silvestres quanto em ecótopos artificiais. Exemplos: Panstrongylus geniculatus, Triatoma rubrovaria,Triatoma arthumeivai, Triatoma patagonica, Triatoma eratyrusiforme, Rhodnius domesticus e muitas outras espécies cujos hábitos são poucos conhecidos. 3 Triatomíneos silvestres em fase inicial de adaptação aos ecótopos artificiais, formando pequenas colônias principalmente no peridomicílio e, mais raramente, na própria habitação humana. Além da importância que têm no ciclo silvestre do T. cruzi, podem trazer a infecção para os ecótopos artificiais e, em determinadas instâncias, participar do ciclo domiciliário do parasita. Exemplos: Rhodnius neglectus, Triatoma vitticeps. Triatoma platensis e outras espécies pouco estudadas. 4 Triatomíneos que se criam indiferentemente em

  1. Una experiencia de gestión participativa de la biodiversidad con comunidades amazónicas

    Directory of Open Access Journals (Sweden)

    José Álvarez

    2012-11-01

    Full Text Available El Instituto de Investigaciones de la Amazonía Peruana – IIAP, Nature and Culture International (NCI junto con comunidades locales, el Gobierno Regional de Loreto y otras organizaciones privadas, han estado desarrollando en la última década un modelo de cogestión comunitaria de la biodiversidad amazónica, con resultados muy promisorios. En el presente trabajo se analizan los principales logros de este modelo. En las tres cuencas donde se ejecutaron estos proyectos (Tahuayo, Yanayacu del Amazonas y Nanay observamos la reversión de los procesos de degradación de recursos y eco sistemas, la reducción significativa de la tala, pesca y caza ilegales, y de la cosecha destructiva de recursos; también han mejorado significativamente algunos indicadores económicos de las poblaciones locales involucradas gracias a la comercialización de productos con valor agregado y la recuperación de las pesquerías, la fauna silvestre y otros recursos. Las líneas maestras de este enfoque fueron: (1 conservación productiva (conservación como negocio, esto es, recuperar recursos de flora y fauna silvestres y conservarlos productivamente para la gente, generando ingresos; (2 manejo adaptativo (medidas sencillas de manejo diseñadas y adoptadas progresivamente por las propias comunidades con apoyo de los técnicos, siguiendo el modelo de investigación participativa; (3 enfoque ecosistémico (conservación de grandes paisajes, especialmente cuencas y ecosistemas completos, incluyendo procesos ecológicos priorizados, como migraciones estacionales de peces, y conservación de áreas fuente; (4 uso y rentabilización del bosque en pie (priorizar generación de ingresos de recursos silvestres manejados vs. cambio de uso del bosque; (5 participación de todos los actores, desde las comunidades locales organizadas debidamente consultadas hasta las empresas privadas, las instituciones públicas y los tomadores de decisión; (6 desarrollo de cadenas productivas

  2. Evaluación de la reacción en cadena de la polimerasa para el diagnóstico de la brucelosis en un rebaño lechero infectado con Brucellaspp Assessment of polymerase chain reaction (PCR to diagnose brucellosis in a Brucella infected herd

    Directory of Open Access Journals (Sweden)

    O. Lavaroni

    2004-09-01

    Full Text Available Para el diagnóstico de la brucelosis bovina en muestras de sangre y/o leche, se comparó la reacción en cadena de la polimerasa (PCR con el aislamiento in vitro de Brucella abortus, las pruebas serológicas defijación del complemento (FC e inmunoenzimáticas de competición (ELISA-C en suero e indirecto (ELISA-I en leche. Se analizaron muestras de vacas lecheras de un rebaño infectado “A”, vacunadas con B. abortus cepa 19 antes de los 8 meses de edad y revacunadas con B. abortus cepa RB51 como adultas (n= 99 y de otro “B”, libre de brucelosis (n=100, como control. En A, la PCR identificó 14 vacas infectadas con B. abortus: nueve con cepa silvestre y cinco con cepa silvestre y RB51. No se identificó B. abortus cepa 19. El biotipo 1 se aisló en un caso. Las 14 vacas infectadas con la cepa silvestre resultaron positivas en las tres pruebas serológicas. En B, por PCR no se identificó Brucella. Las pruebas serológicas mostraron una sensibilidad del 100% respecto de PCR. La especificidad para FC, ELISA-C y ELISA-I fue del 100%, 99% y 95%, respectivamente. Se concluye que la PCR sería útil como complemento de las pruebas serológicas o cuando no hay un resultado concluyente.The diagnosis of bovine brucellosis using PCR in blood and milk samples from two dairy herds were compared to in vitro isolation, complement fixation test (CF, competitive ELISA (C-ELISA in serum, and indirect ELISA (I-ELISA in milk. Samples were obtained from 99 cows vaccinated with Brucella abortus strain 19, from a naturally infected herd (A, whose cows were also vaccinated with B. abortus strain RB51 as adults, and 100 from brucellosis free herd (B. In herd A, PCR identified 14 B. abortus infected cows: nine infected with wild type, and five with wild type and RB51, B. abortus S 19 was not identified. B. abortus biotype 1 was isolated from one cow. All cows infected with a wild strain of B. abortus were positive in serologic tests. Brucella was not found in

  3. 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

  4. Testing the role of contaminants in depressing avian numbers Evaluando el rol de los contaminantes sobre la disminución del número de aves

    Directory of Open Access Journals (Sweden)

    WILLIAM H. KARASOV

    2000-09-01

    Full Text Available Environmental contaminants are ubiquitous and so are often key suspects in cases of lagging wildlife populations. How do we test hypotheses about cause-effect linkages between contaminants and wildlife health? We present three case studies in which different approaches were used to test hypotheses about effects of contaminants on wildlife. The cases involve the possible impacts of (1 polychlorinated biphenyl on Lake Superior bald eagles (Haliaeetus leucocephalus; (2 dioxin on osprey (Pandion halieatus; and (3 methyl mercury on common loons (Gavia immer. The different approaches were dictated by legal, logistic, and financial limitations, but the relative strengths of experimental and mechanistic approaches over correlative approaches is underscored. For all three species, the simple correlation between a single contaminant and performance was confounded by covariation with other types of contaminants and/or natural ecological factors such as food availability and predationLos contaminantes ambientales son ubicuos y a menudo los principales sospechosos en los casos de disminución en las poblaciones de fauna silvestre. ¿Cómo probamos las hipótesis sobre las relaciones causa - efecto entre los contaminantes y la salud de la fauna silvestre? Presentamos tres estudios de caso en que se usaron diferentes aproximaciones para someter a prueba las hipótesis sobre los efectos de los contaminantes sobre la fauna silvestre. Los casos involucran los posibles impactos de (1 el bifenilos policlorados en el águila calva (Haliaeetus leucocephalus en el Lago Superior; (2 las dioxinas sobre el águila pescadora (Pandion halieatus; y (3 el mercurio de metilo en colimbo grande (Gavia immer. Las limitaciones legales, logísticas y financieras, determinaron diferentes aproximaciones en estos estudios, pero se destaca que la fuerza relativa de las aproximaciones experimentales y mecanicistas es superior a la de un acercamiento correlacional. Se demuestra que, en

  5. Forced copulation results in few extrapair fertilizations in Ross's and lesser snow geese

    Science.gov (United States)

    Dunn, P.O.; Afton, A.D.; Gloutney, M.L.; Alisauskas, R.T.

    1999-01-01

    Extrapair paternity varies from 0 to over 70% of young among various populations of birds. Comparative studies have suggested that this variation is related to nesting density, breeding synchrony and the proportion of extrapair copulations. We used minisatellite DNA fingerprinting to examine levels of extrapair paternity in Ross's geese, Chen rossi, and lesser snow geese, C. caerulescens c. (hereafter snow geese) nesting in the largest known goose colony in the world. These geese have one of the highest known percentages of extrapair copulation (46-56% of all attempted copulations), and all of these appeared to be forced. Among all successful copulations, 33 and 38% were extrapair in Ross's and snow geese, respectively. Despite the high percentage of extrapair copulations, extrapair paternity was low in both Ross's and snow geese (2-5% of young). Extrapair paternity was not related to nest density in either species. However, in snow geese, extrapair paternity was more likely to occur in nests of females that nested asynchronously, either early or late in the season. This is one of a few reported examples of a negative relationship between extrapair paternity and breeding synchrony. Extrapair young also tended to come from eggs laid later in the clutch. Although forced extrapair copulations appear to be a relatively inefficient reproductive tactic for males, they may provide a reproductive advantage for some males.

  6. Species composition of forensically important blow flies (Diptera: Calliphoridae) and flesh flies (Diptera: Sarcophagidae) through space and time.

    Science.gov (United States)

    Fremdt, Heike; Amendt, Jens

    2014-03-01

    Weekly monitoring of forensically important flight-active blow flies (Diptera: Calliphoridae) and flesh flies (Diptera: Sarcophagidae) was performed using small baited traps. Sampling took place in two rural, one suburban and two urban habitats in and around Frankfurt (Main), Germany, lasting two years and eight months. Highest values for species richness and Chao-Shen entropy estimator for Shannon's index in both families were found at the urban sites, peaking during summer. Space-time interaction was tested and found to be significant, demonstrating the value of a statistical approach recently developed for community surveys in ecology. K-means partitioning and analysis of indicator species gave significant temporal and habitat associations of particular taxa. Calliphora vicina was an indicator species for lower temperatures without being associated with a particular habitat. Lucilia sericata was an indicator for urban sites, whereas Lucilia ampullacea and Lucilia caesar were indicators for rural sites, supplemented by the less frequent species Calliphora vomitoria. Sarcophagidae were observed during a clearly shorter period of year. Sarcophaga subvicina+Sarcophaga variegata was found to be an indicator for urban habitats during summer as well as Sarcophaga albiceps for rural habitats. A significant association of Sarcophaga caerulescens to rural habitats as well as one of Sarcophaga similis to urban habitats was observed. Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.

  7. Microhabitat characteristics of Lapland Longspur, Calcarius lapponicus, nests at Cape Churchill, Manitoba

    Science.gov (United States)

    Boal, C.W.; Andersen, D.E.

    2005-01-01

    We examined microsite characteristics at 21 Lapland Longspur (Calcarius lapponicus) nests and land cover types in which they occurred in Wapusk National Park, Cape Churchill, Manitoba. Nests were located in four of six physiographic-vegetation land-cover types. Regardless of land-cover type, all but one nest was built on a pressure ridge or mound. Nests were built midway between the bottom and top of ridges or mounds with steeper slopes than was randomly available. Longspur nests had a distinctive southwest orientation (P < 0.001). Longspurs selected nest sites that consisted of comparatively greater amounts of shrub species and lesser amounts of moss than were randomly available. Nests were generally well concealed by vegetation (mean = 67.0%) and concealment was negatively associated with amount of graminoid species at the nest (P = 0.0005). Our nesting habitat data may facilitate a better understanding of breeding Lapland Longspur habitat requirements, and potential impacts of habitat degradation by increasing Snow Goose (Chen caerulescens) populations in the study area.

  8. Phytoremediative urban design: Transforming a derelict and polluted harbour area into a green and productive neighbourhood

    International Nuclear Information System (INIS)

    Wilschut, M.; Theuws, P.A.W.; Duchhart, I.

    2013-01-01

    Many urban areas are polluted by industrial activities and waste disposal in landfills. Since conventional soil remediation techniques are costly and unsustainable, phytoremediation might offer an alternative. In this article, we explore how phytoremediation can be integrated into the transformation of urban post-industrial areas, while improving public space. Buiksloterham, a polluted and deprived industrial area in Amsterdam, serves as case study. Buiksloterham is polluted with heavy metals, with Zinc (Zn) concentrations being the highest. A regression-model for Alpine Pennycress (Thlaspi caerulescens) is used to estimate the time needed to remediate the site. This reveals a conflict in time between remediation and urban development. A research by design experiment shows how to overcome this conflict by dealing with polluted soil innovatively while emphasizing spatial and aesthetic qualities of the phytoremediation plant species. The resulting landscape framework integrates phytoremediation with biomass production and gives new ecological, economic and social value to Buiksloterham. -- Highlights: ► Design can provide a link between the field of science and the field of practice. ► Design translates scientific knowledge into a specific aesthetic spatial composition. ► A landscape framework makes phytoremediation feasible in an urban context. ► Estimated time for phytoremediation conflicts with urban developments. ► Phytoremediation combined with biomass production is a feasible temporal land-use. -- A research by design method can translate scientific knowledge on phytoremediation into an aesthetic spatial composition for a specific site, thereby linking science and practice

  9. The leguminous species Anthyllis vulneraria as a Zn-hyperaccumulator and eco-Zn catalyst resources.

    Science.gov (United States)

    Grison, Claire M; Mazel, Marine; Sellini, Amandine; Escande, Vincent; Biton, Jacques; Grison, Claude

    2015-04-01

    Anthyllis vulneraria was highlighted here as a Zn-hyperaccumulator for the development of a pilot phytoextraction process in the mine site of Les Avinières in the district of Saint-Laurent-Le-Minier. A. vulneraria appeared to hyperaccumulate the highest concentration of Zn in shoots with a better metal selectivity relative to Cd and Pb than the reference Zn-hyperaccumulator Noccea caerulescens. A bigger biomass production associated to a higher Zn concentration conducted A. vulneraria to the highest total zinc gain per hectare per year. As a legume, A. vulneraria was infected by rhizobia symbionts. Inoculation of A. vulneraria seeds showed a positive impact on Zn hyperaccumulation. A large-scale culture process of symbiotic rhizobia of A. vulneraria was investigated and optimized to allow large-scale inoculation process. Contaminated shoots of A. vulneraria were not considered as wastes and were recovered as Eco-Zn catalyst in particular, examples of organic synthesis, electrophilic aromatic substitution. Eco-Zn catalyst was much more efficient than conventional catalysts and allowed greener chemical processes.

  10. Factors influencing reporting and harvest probabilities in North American geese

    Science.gov (United States)

    Zimmerman, G.S.; Moser, T.J.; Kendall, W.L.; Doherty, P.F.; White, Gary C.; Caswell, D.F.

    2009-01-01

    We assessed variation in reporting probabilities of standard bands among species, populations, harvest locations, and size classes of North American geese to enable estimation of unbiased harvest probabilities. We included reward (US10,20,30,50, or100) and control (0) banded geese from 16 recognized goose populations of 4 species: Canada (Branta canadensis), cackling (B. hutchinsii), Ross's (Chen rossii), and snow geese (C. caerulescens). We incorporated spatially explicit direct recoveries and live recaptures into a multinomial model to estimate reporting, harvest, and band-retention probabilities. We compared various models for estimating harvest probabilities at country (United States vs. Canada), flyway (5 administrative regions), and harvest area (i.e., flyways divided into northern and southern sections) scales. Mean reporting probability of standard bands was 0.73 (95 CI 0.690.77). Point estimates of reporting probabilities for goose populations or spatial units varied from 0.52 to 0.93, but confidence intervals for individual estimates overlapped and model selection indicated that models with species, population, or spatial effects were less parsimonious than those without these effects. Our estimates were similar to recently reported estimates for mallards (Anas platyrhynchos). We provide current harvest probability estimates for these populations using our direct measures of reporting probability, improving the accuracy of previous estimates obtained from recovery probabilities alone. Goose managers and researchers throughout North America can use our reporting probabilities to correct recovery probabilities estimated from standard banding operations for deriving spatially explicit harvest probabilities.

  11. Model evaluation of the phytoextraction potential of heavy metal hyperaccumulators and non-hyperaccumulators

    Energy Technology Data Exchange (ETDEWEB)

    Liang, H.-M. [Agricultural Biotechnology Research Center, Academia Sinica, 128 Section 2, Academia Road, Taipei, Taiwan 11529, Taiwan (China); Lin, T.-H. [Department of Statistics, National Taipei University, Taiwan (China); Chiou, J.-M. [Institute of Statistical Science, Academia Sinica, Taiwan (China); Yeh, K.-C., E-mail: kcyeh@gate.sinica.edu.t [Agricultural Biotechnology Research Center, Academia Sinica, 128 Section 2, Academia Road, Taipei, Taiwan 11529, Taiwan (China)

    2009-06-15

    Evaluation of the remediation ability of zinc/cadmium in hyper- and non-hyperaccumulator plant species through greenhouse studies is limited. To bridge the gap between greenhouse studies and field applications for phytoextraction, we used published data to examine the partitioning of heavy metals between plants and soil (defined as the bioconcentration factor). We compared the remediation ability of the Zn/Cd hyperaccumulators Thlaspi caerulescens and Arabidopsis halleri and the non-hyperaccumulators Nicotiana tabacum and Brassica juncea using a hierarchical linear model (HLM). A recursive algorithm was then used to evaluate how many harvest cycles were required to clean a contaminated site to meet Taiwan Environmental Protection Agency regulations. Despite the high bioconcentration factor of both hyperaccumulators, metal removal was still limited because of the plants' small biomass. Simulation with N. tabacum and the Cadmium model suggests further study and development of plants with high biomass and improved phytoextraction potential for use in environmental cleanup. - A quantitative solution enables the evaluation of Zn/Cd phytoextraction.

  12. A comparison of phytoremediation capability of selected plant species for given trace elements

    International Nuclear Information System (INIS)

    Fischerova, Zuzana; Tlustos, Pavel; Jirina Szakova; Kornelie Sichorova

    2006-01-01

    In our experiment, As, Cd, Pb, and Zn remediation possibilities on medium contaminated soil were investigated. Seven plant species with a different trace element accumulation capacity and remediation potential were compared. We found good accumulation capabilities and remediation effectiveness of Salix dasyclados similar to studied hyperaccumulators (Arabidopsis halleri and Thlaspi caerulescens). We have noticed better remediation capability in willow compared to poplar for most of the elements considered in this experiment. On the contrary, poplar species were able to remove a larger portion of Pb as opposed to other species. Nevertheless, the removed volume was very small. The elements found in plant biomass depend substantially on the availability of these elements in the soil. Different element concentrations were determined in natural soil solution and by inorganic salt solution extraction (0.01 mol L -1 CaCl 2 ). Extracted content almost exceeded the element concentration in the soil solution. Element concentrations in soil solution were not significantly affected by sampling time. - Selected accumulator trees grown on medium contaminated soil may have remediation capacity similar to hyperaccumulator species

  13. The dynamics of avian influenza in western Arctic snow geese: implications for annual and migratory infection patterns

    Science.gov (United States)

    Samuel, Michael D.; Hall, Jeffrey S.; Brown, Justin D.; Goldberg, Diana R.; Ip, Hon S.; Baranyuk, Vasily V.

    2015-01-01

    Wild water birds are the natural reservoir for low-pathogenic avian influenza viruses (AIV). However, our ability to investigate the epizootiology of AIV in these migratory populations is challenging, and despite intensive worldwide surveillance, remains poorly understood. We conducted a cross-sectional, retrospective analysis in Pacific Flyway lesser snow geese Chen caerulescens to investigate AIV serology and infection patterns. We collected nearly 3,000 sera samples from snow geese at 2 breeding colonies in Russia and Canada during 1993-1996 and swab samples from > 4,000 birds at wintering and migration areas in the United States during 2006-2011. We found seroprevalence and annual seroconversion varied considerably among years. Seroconversion and infection rates also differed between snow goose breeding colonies and wintering areas, suggesting that AIV exposure in this gregarious waterfowl species is likely occurring during several phases (migration, wintering and potentially breeding areas) of the annual cycle. We estimated AIV antibody persistence was longer (14 months) in female geese compared to males (6 months). This relatively long period of AIV antibody persistence suggests that subtype-specific serology may be an effective tool for detection of exposure to subtypes associated with highly-pathogenic AIV. Our study provides further evidence of high seroprevalence in Arctic goose populations, and estimates of annual AIV seroconversion and antibody persistence for North American waterfowl. We suggest future AIV studies include serology to help elucidate the epizootiological dynamics of AIV in wild bird populations.

  14. Screening of 18 species for digestate phytodepuration.

    Science.gov (United States)

    Pavan, Francesca; Breschigliaro, Simone; Borin, Maurizio

    2015-02-01

    This experiment assesses the aptitude of 18 species in treating the digestate liquid fraction (DLF) in a floating wetland treatment system. The pilot system was created in NE Italy in 2010 and consists of a surface-flow system with 180 floating elements (Tech-IA®) vegetated with ten halophytes and eight other wetland species. The species were transplanted in July 2011 in basins filled with different proportions of DLF/water (DLF/w); periodic increasing of the DLF/w ratio was imposed after transplanting, reaching the worst conditions for plants in summer 2012 (highest EC value 7.3 mS cm/L and NH4-N content 225 mg/L). It emerged that only Cynodon dactylon, Typha latifolia, Elytrigia atherica, Halimione portulacoides, Salicornia fruticosa, Artemisia caerulescens, Spartina maritima and Puccinellia palustris were able to survive under the system conditions. Halophytes showed higher dry matter production than other plants. The best root development (up to 40-cm depth) was recorded for Calamagrostis epigejos, Phragmites australis, T. latifolia and Juncus maritimus. The highest nitrogen (10-15 g/m(2)) and phosphorus (1-4 g/m(2)) uptakes were obtained with P. palustris, Iris pseudacorus and Aster tripolium. In conclusion, two halophytes, P. palustris and E. atherica, present the highest potential to be used to treat DLF in floating wetlands.

  15. In situ assessment of phytotechnologies for multicontaminated soil management.

    Science.gov (United States)

    Ouvrard, S; Barnier, C; Bauda, P; Beguiristain, T; Biache, C; Bonnard, M; Caupert, C; Cébron, A; Cortet, J; Cotelle, S; Dazy, M; Faure, P; Masfaraud, J F; Nahmani, J; Palais, F; Poupin, P; Raoult, N; Vasseur, P; Morel, J L; Leyval, C

    2011-01-01

    Due to human activities, large volumes of soils are contaminated with organic pollutants such as polycyclic aromatic hydrocarbons, and very often by metallic pollutants as well. Multipolluted soils are therefore a key concern for remediation. This work presents a long-term evaluation of the fate and environmental impact of the organic and metallic contaminants of an industrially polluted soil under natural and plant-assisted conditions. A field trial was followed for four years according to six treatments in four replicates: unplanted, planted with alfalfa with or without mycorrhizal inoculation, planted with Noccaea caerulescens, naturally colonized by indigenous plants, and thermally treated soil planted with alfalfa. Leaching water volumes and composition, PAH concentrations in soil and solutions, soil fauna and microbial diversity, soil and solution toxicity using standardized bioassays, plant biomass, mycorrhizal colonization, were monitored. Results showed that plant cover alone did not affect total contaminant concentrations in soil. However, it was most efficient in improving the contamination impact on the environment and in increasing the biological diversity. Leaching water quality remained an issue because of its high toxicity shown by micro-algae testing. In this matter, prior treatment of the soil by thermal desorption proved to be the only effective treatment.

  16. Confirmación de la reproducción de Gomphus graslinii (Rambur, 1844 y odonatofauna fluvial de los Prepirineos del este de Navarra

    Directory of Open Access Journals (Sweden)

    Torralba-Burrial, A., Armendariz, C., Rabina, E., Llamas, A., Nores, C.

    2014-01-01

    Full Text Available Gomphus graslinii (Rambur, 1844 es una libélula amenazada incluida en el Catálogo Español de Especies Amenazadas y en la Directiva Hábitats de la Unión Europea. Presenta una distribución sumamente fragmentada en la Península Ibérica, siendo muy escasas las poblaciones conocidas y citas publicadas en su cuadrante nororiental, entre ellas dos citas de especímenes adultos en Navarra. Se ha buscado en ríos prepirenaicos del oriente navarro, muestreándose 23 tramos en la zona y aportándose datos sobre su reproducción en dos tramos del río Salazar. Se proporcionan también datos de otras 24 especies de odonatos, incluyendo a Gomphus simillimus Selys, 1840 y Coenagrion caerulescens (Fonscolombe, 1838, consideradas como vulnerables en el Atlas y Libro Rojo de los Invertebrados de España.

  17. Model evaluation of the phytoextraction potential of heavy metal hyperaccumulators and non-hyperaccumulators

    International Nuclear Information System (INIS)

    Liang, H.-M.; Lin, T.-H.; Chiou, J.-M.; Yeh, K.-C.

    2009-01-01

    Evaluation of the remediation ability of zinc/cadmium in hyper- and non-hyperaccumulator plant species through greenhouse studies is limited. To bridge the gap between greenhouse studies and field applications for phytoextraction, we used published data to examine the partitioning of heavy metals between plants and soil (defined as the bioconcentration factor). We compared the remediation ability of the Zn/Cd hyperaccumulators Thlaspi caerulescens and Arabidopsis halleri and the non-hyperaccumulators Nicotiana tabacum and Brassica juncea using a hierarchical linear model (HLM). A recursive algorithm was then used to evaluate how many harvest cycles were required to clean a contaminated site to meet Taiwan Environmental Protection Agency regulations. Despite the high bioconcentration factor of both hyperaccumulators, metal removal was still limited because of the plants' small biomass. Simulation with N. tabacum and the Cadmium model suggests further study and development of plants with high biomass and improved phytoextraction potential for use in environmental cleanup. - A quantitative solution enables the evaluation of Zn/Cd phytoextraction.

  18. Effects of spring conditions on breeding propensity of Greater Snow Goose females

    Directory of Open Access Journals (Sweden)

    Reed, E. T.

    2004-06-01

    Full Text Available Breeding propensity, defined as the probability that a sexually mature adult will breed in a given year, is an important determinant of annual productivity. It is also one of the least known demographic parameters in vertebrates. We studied the relationship between breeding propensity and conditions on spring staging areas (a spring conservation hunt and the breeding grounds (spring snow cover in Greater Snow Geese (Chen caerulescens atlantica, a long distance migrant that breeds in the High Arctic. We combined information from mark–recapture, telemetry, and nest survey data to estimate breeding propensity over a 7– year period. True temporal variation in breeding propensity was considerable (mean: 0.574 [95% CI considering only process variation: 0.13 to 1.0]. Spring snow cover was negatively related to breeding propensity (bsnow=-2,05 ± 0,96 SE and tended to be reduced in years with a spring hunt (b = -0,78 ± 0,35. Nest densities on the breeding colony and fall ratios of young:adults were good indices of annual variation in breeding propensity, with nest densities being slightly more precise. These results suggest that conditions encountered during the pre-breeding period can have a significant impact on productivity of Arctic-nesting birds

  19. Facultative hyperaccumulation of heavy metals and metalloids.

    Science.gov (United States)

    Pollard, A Joseph; Reeves, Roger D; Baker, Alan J M

    2014-03-01

    Approximately 500 species of plants are known to hyperaccumulate heavy metals and metalloids. The majority are obligate metallophytes, species that are restricted to metalliferous soils. However, a smaller but increasing list of plants are "facultative hyperaccumulators" that hyperaccumulate heavy metals when occurring on metalliferous soils, yet also occur commonly on normal, non-metalliferous soils. This paper reviews the biology of facultative hyperaccumulators and the opportunities they provide for ecological and evolutionary research. The existence of facultative hyperaccumulator populations across a wide edaphic range allows intraspecific comparisons of tolerance and uptake physiology. This approach has been used to study zinc and cadmium hyperaccumulation by Noccaea (Thlaspi) caerulescens and Arabidopsis halleri, and it will be instructive to make similar comparisons on species that are distributed even more abundantly on normal soil. Over 90% of known hyperaccumulators occur on serpentine (ultramafic) soil and accumulate nickel, yet there have paradoxically been few experimental studies of facultative nickel hyperaccumulation. Several hypotheses suggested to explain the evolution of hyperaccumulation seem unlikely when most populations of a species occur on normal soil, where plants cannot hyperaccumulate due to low metal availability. In such species, it may be that hyperaccumulation is an ancestral phylogenetic trait or an anomalous manifestation of physiological mechanisms evolved on normal soils, and may or may not have direct adaptive benefits. Copyright © 2013 Elsevier Ireland Ltd. All rights reserved.

  20. Azodrin® poisoning of waterfowl in rice fields in Louisiana

    Science.gov (United States)

    White, D.H.; Mitchell, C.A.; Kolbe, E.J.; Ferguson, W.H.

    1983-01-01

    During the period 2-4 April 1981 about 100 birds, mostly ducks and geese, were found dead and dying in a rice field near Sweet Lake, Calcasieu Parish, Louisiana. Fresh specimens were collected to determine the cause of mortality. Birds were placed individually in polyethylene freezer bags, tagged, and frozen soon after collection. Four snow geese (Chen caerulescens), two blue-winged teal (Anas discors), one green-winged teal (Anas crecca), and one mottled duck (Anas fulvigula) were shipped to the National Wildlife Health Laboratory (NWHL), Madison, Wisconsin, for necropsy and pathological examination. Ten snow geese, 10 blue-winged teal, three green-winged teal, three great-tailed grackles (Quiscalus mexicanus), and eight red-winged blackbirds (Agelaius phoeniceus) were transported to the Gulf Coast Field Station, Victoria, Texas, for brain acetylcholinesterase (AChE) activity determinations and preparation for chemical residue analysis. Additionally, apparently healthy specimens of the affected species were collected near Lake Charles, Louisiana, and Victoria, Texas, to serve as controls in the analyses.

  1. Scale-dependent mechanisms of habitat selection for a migratory passerine: an experimental approach

    Science.gov (United States)

    Donovan, Therese M.; Cornell, Kerri L.

    2010-01-01

    Habitat selection theory predicts that individuals choose breeding habitats that maximize fitness returns on the basis of indirect environmental cues at multiple spatial scales. We performed a 3-year field experiment to evaluate five alternative hypotheses regarding whether individuals choose breeding territories in heterogeneous landscapes on the basis of (1) shrub cover within a site, (2) forest land-cover pattern surrounding a site, (3) conspecific song cues during prebreeding settlement periods, (4) a combination of these factors, and (5) interactions among these factors. We tested hypotheses with playbacks of conspecific song across a gradient of landscape pattern and shrub density and evaluated changes in territory occupancy patterns in a forest-nesting passerine, the Black-throated Blue Warbler (Dendroica caerulescens). Our results support the hypothesis that vegetation structure plays a primary role during presettlement periods in determining occupancy patterns in this species. Further, both occupancy rates and territory turnover were affected by an interaction between local shrub density and amount of forest in the surrounding landscape, but not by interactions between habitat cues and social cues. Although previous studies of this species in unfragmented landscapes found that social postbreeding song cues played a key role in determining territory settlement, our prebreeding playbacks were not associated with territory occupancy or turnover. Our results suggest that in heterogeneous landscapes during spring settlement, vegetation structure may be a more reliable signal of reproductive performance than the physical location of other individuals.

  2. Uso de ambientes por mamíferos em área de Floresta Atlântica com plantios de eucaliptos no Vale do Paraíba/SP

    OpenAIRE

    Oliveira, Maria de Fátima de

    2013-01-01

    A redução das áreas de florestas e a insularização dos remanescentes acarretam a necessidade urgente de elaboração e implementação de técnicas que minimizem os impactos a esses remanescentes e que, ao mesmo tempo, promovam a conservação da vida silvestre local. Pela inexistência de áreas de vegetação original adequadas, todo e qualquer fragmento se toma elemento vital na manutenção da fauna local. Para gerar informações que subsidiem ações de conservação de fragmentos e de sua fauna, este tra...

  3. La etnobotánica: su alcance y sus objetos

    Directory of Open Access Journals (Sweden)

    Schultes Richard Evans

    1941-11-01

    Full Text Available Existe entre la Botánica y la Antropología una ciencia intermedia a la que, desde hace medio siglo, se ha dado el nombre de Etnobotánica. Como ocurre con otras ciencias interfacultativas o interdisciplinales la Etnobotánica no se puede definir fácilmente y por esto ha habido muchas diferencias de opinión en cuanto a su alcance y sus objetos. En su más amplio sentido, la Etnobotánica es el estudio de las relaciones que existen entre el hombre y su ambiente vegetal, es decir las plantas que lo rodean. En un sentido más restringido, se ha considerado solamente como el estudio del uso de las plantas cultivadas y silvestres por los pueblos primitivos, usualmente los aborígenes.

  4. Seleccion de híbridos de especies de papa por resistencia a Phytophthora infestans (Mont de Bary, fertilidad masculina y potencial productivo Hybrid selection of potatoe species for resistance to Phytophthora infestans (Mont de Bary, male fertility and productive potential

    Directory of Open Access Journals (Sweden)

    Ñustez L. Carlos Eduardo

    1990-12-01

    Full Text Available En la Universidad Nacional de Colombia en Mosquera durante los años 1988 y 1989 se realizó una investigación, donde se evaluó bajo condiciones de invernadero la resistencia a P. infestans de las progenies de 51 cruzamientos (F1 y avanzados. que inclu ían en su pedigree especies silvestres,
    primitivas y/o cultivadas de papa. Luego de un primer ciclo de selección los genotipos escogidos se evaluaron en campo por
    resistencia a la enfermedad, fertilidad masculina y potencial productivo (kg/planta. En invernadero se encontró buena resistencia a razas no específicas de P. infestans en las progenies de los cruzamientos simples con phureja, que incluían las especies silvestres polyadenium, stoloniferum, iopetslum, . avilesii y okadae y susceptibilidad en los que
    tenían las silvestres -dodsii, abancayense, embosinum, canasense, gandarillasii, pampasense, marinasense yalandiae. Al final del segundo ciclo de evaluación
    en campo se seleccionaron 27 genotipos: 5 de cruzamientos simples, 9 de cruzamientos triples y 2 de cruzamientos múltiples que incluyen especies silvestres en su pedigree
    (avilesii, brachycarpum, stotontterum, iopetalum, hougasii, eceule y los 11 restantes incluyen genotipos primitivos y/o avanzados. Un excelente potencial productivo se encontró
    en genotipos del cruzamiento interéspecífico avílesíi x phureja, y en genotipos de cruzamientos triples que incluyen las especies hougasii o acaule. La fertilidad masculina
    de los genotipo evaluados osciló desde esterilidad hasta alta fertilidad.An experiment was carriet out in one of the greenhouses of the Natíonal University of Colombia located in Bogotá, between 1988 and 1989. The objetive was to evaluate. the resistance to P. infestans of the progenies of 51 crosses (F1 and advanced that included in their pedigree wild, primitive specias and/or cultivated potatoes. Then after a first cycle of selection the chosen genotypes were evaluated in

  5. Febre amarela. I - Aspectos cíclicos e epidemiológicos

    Directory of Open Access Journals (Sweden)

    M. R. Q. de Kastner

    1976-02-01

    Full Text Available Relata-se um resumo epidemiológico do surto epizoótico de febre amarela ocorrido no ano de 1973. São postas em evidência a sua incidência, a distribuição por idades, a distribuição por sexo e a distribuição geográfica. Em seguida, são apresentados os resultados obtidos pela revisão dos casos de febre amarela, que vêm sendo estudados, recolhidos e arquivados na Coleção do Serviço de Viscerotomia da Seção de Histopatologia da Febre Amarela do Instituto Oswaldo Cruz, desde 1931. O trabalho está documentado com tabelas e gráficos que registram os dados acima indicados. Os autores ressaltam os seguintes pontos: 1 A Febre amarela, urbana e silvestre, apresenta quadros epidemiológicos inteiramente diferentes; 2 A incidência da febre amarela silvestre ocorre principalmente no sexo masculino, de acordo com os dados estatisticamente significativos; 3 A idade mais atingida pela forma silvestre é a entre 20 e 30 anos; 4 A febre amarela silvestre continua em áreas enzoóticas, ao longo dos cursos d'água; 5 Parece existir uma relação entre as condições climáticas e a incidência da febre amarela; 6 Os surtos de febre amarela ocorrem aproximadamente de 7 em 7 anos; 7 É do máximo valor o programa de vacinação e o serviço de viscerotomia da SUCAM.It is presented an epidemiological summary of epizootic yellow fever outbreak happened in 1973. Its incidence, the distribution according to ages, to sex and geographical distribuion are pointed out. The results of the revision of yellow fever cases, which have been studied, collected and archived in viscerotomy Service collection of Histopathology of Yellow section of Oswaldo Cruz Institute, since 1931 are presented. The article is ilustrated with tables and graphics which registrate the data indicated above. The authors emphasize the following items: 1 Urban and jungle yellow fever present epidemiological aspects completely different; 2 Jungle yellow fever incidence occurs mainly

  6. Investigação epidemiológica de casos de febre amarela na região noroeste do Estado de São Paulo, Brasil Epidemiological investigation into cases of yellow fever in the North- west region of S. Paulo State, Brazil

    OpenAIRE

    Teresinha Lisieux M. Coimbra; Lygia Busch Iversson; Marlene Spir; Venâncio A. Ferreira Alves; Marcos Boulos

    1987-01-01

    Descreve-se investigação epidemiológica conduzida a partir da notificação de três casos suspeitos de febre amarela em moradores da região noroeste do Estado de São Paulo, Brasil, onde se identificou a presença de Aedes aegypti. Concluiu-se que se tratavam de casos de febre amarela silvestre adquirida em área endêmica do Estado vizinho de Mato Grosso. Apesar da presença de focos de Aedes aegypti nos locais de residência dos doentes, não foram encontradas evidências de transmissão do vírus amar...

  7. Soroprevalência da doença de Chagas em crianças em idade escolar do Estado do Espírito Santo, Brasil, em 1999-2000 Chagas' disease seroprevalence among school-age children in Espírito Santo State, Brazil, 1999-2000

    OpenAIRE

    Paulo Augusto Sessa; Ricardo Ramos Pimentel; Adelson Luiz Ferreira; Aloísio Falqueto

    2002-01-01

    Embora o Estado do Espírito Santo não seja considerado endêmico para a doença de Chagas, triatomíneos silvestres que lá ocorrem freqüentemente invadem as casas, com chances de transmissão da doença às pessoas. Avaliou-se o padrão epidemiológico da moléstia no Estado por meio de um inquérito sorológico realizado em 5.243 escolares de 7 a 14 anos de idade, residentes em 17 municípios. Os testes de Imunofluorescência Indireta, Hemaglutinação Indireta e Imunoenzimático (ELISA) foram positivos em ...

  8. Soroprevalência da doença de Chagas em crianças em idade escolar do Estado do Espírito Santo, Brasil, em 1999-2000

    OpenAIRE

    Sessa Paulo Augusto; Pimentel Ricardo Ramos; Ferreira Adelson Luiz; Falqueto Aloísio

    2002-01-01

    Embora o Estado do Espírito Santo não seja considerado endêmico para a doença de Chagas, triatomíneos silvestres que lá ocorrem freqüentemente invadem as casas, com chances de transmissão da doença às pessoas. Avaliou-se o padrão epidemiológico da moléstia no Estado por meio de um inquérito sorológico realizado em 5.243 escolares de 7 a 14 anos de idade, residentes em 17 municípios. Os testes de Imunofluorescência Indireta, Hemaglutinação Indireta e Imunoenzimático (ELISA) foram positivos em ...

  9. REDEFINICIÓN DE LÍMITES PARQUE NACIONAL VOLCÁN IRAZÚ

    OpenAIRE

    Haug Delgado, German

    2011-01-01

    En Costa Rica la mayoría de las áreas silvestres protegidas se crearon con base en intereses políticos o sugerencias particulares de grupos conservacionistas, la mayoría de las veces sin contar con el apoyo técnico y científico que les permitiera definir los límites más apropiados que estas áreas debían de tener para cumplir adecuadamente con los objetivos nacionales de conservación y categoría de manejo asignado.  En atención a esta situación e interés de contribuir a su solución.  El presen...

  10. Centros de origen, domesticación y diversidad genética de la ciruela mexicana, Spondias purpurea (Anacardiaceae)

    OpenAIRE

    Fortuny-Fernández, Norka María; Ferrer, Miriam Monserrat; Ruenes-Morales, María del Rocío

    2017-01-01

    Resumen: Antecedentes y Objetivos: La identificación de poblaciones silvestres, con manejo agrícola o silvícola en los centros de origen y domesticación de plantas, es una acción importante en la conservación de los recursos fitogenéticos. Para identificar los centros de origen, domesticación y diversidad genética de Spondias purpurea en Mesoamérica se realizó un análisis filogeográfico de la especie. Métodos: Se amplificó el marcador de DNAcp trnS-trnG para 66 accesiones del banco de germo...

  11. MUCILAGINOUS PLANTS IN THE CLARIFICATION OF SUGAR CANE JUICE

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    Walter Francisco Quezada Moreno

    2016-04-01

    Full Text Available The aim is to incorporate mucilaginous solutions in the juice clarification process as an alternative for improving the final products that are produced in the agribusiness panela in Ecuador. The study was conducted with 14 mucilaginous plants properties, five plant species: Mallow wild (Malva peruviana L., Yausabara (Pavonia sepium A. St-Hil Yausa (Abutilon famous Planch, black Cadillo (Triumfetta Lappula L and False Joaquín (Hibiscus rosa-sinensis, it was obtained excellent results as clarifying agents. Three factors were assayed experimentally such as solution concentration, amount of solution added to the juice and incorporation temperature on two levels, judged by turbidity variable as a response. The results indicated that the factors tested affect significantly the juice clarification (clear and bright and the best results were achieved with turbidity (Yausabara and Yausa Malva silvestre, Falso Joaquín y Cadillo negro and with the combinations obtaining juices.

  12. Miologia do membro torácico da paca (Cuniculus paca)

    OpenAIRE

    Leal,Leonardo M.; Silva,Juliana A.C.E.; Oliveira,Fabricio S.; Sasahara,Tais H.C.; Machado,Marcia R.F.

    2016-01-01

    Resumo: Objetivou-se descrever os músculos do membro torácico da paca (Cuniculus paca Linnaeus, 1766), mediante dissecação anatômica dessa região. Foram utilizadas cinco Cuniculus paca adultas, machos e fêmeas, pesando entre cinco e 10kg do plantel de pacas do setor de Animais Silvestres da FCAV, Unesp, Jaboticabal/SP. Os animais foram fixados em formoldeído a 10% e conservados em solução salina a 30% para dissecação anatômica da musculatura do ombro, braço e antebraço, identificando-se a ori...

  13. Valoración Médica de Psitácidas y Primates Neotropicales

    OpenAIRE

    Nestor Varela

    2008-01-01

    La evaluación clínica comienza desde el proceso de recepción, ya que permite hacer una apreciación sobre la urgencia del problema, si es que la hay. Aunque no es común en la práctica con especies silvestres, la comunicación telefónica previa al arribo del animal al consultorio, es útil para recolectar información y para dar recomendaciones sobre el transporte del espécimen. En muchos casos la recolección previa de datos importantes no sólo es útil para realizar un examen adecuado, sino tambié...

  14. Enzootic transmission of Trypanosoma cruzi and T. rangeli in the Federal District of Brazil Transmissão enzoótica de Trypanosoma cruzi e T. rangeli no Distrito Federal, Brasil

    Directory of Open Access Journals (Sweden)

    Rodrigo Gurgel-Gonçalves

    2004-04-01

    Full Text Available The Federal District of Brazil (DF lies within the Cerrado biome, where open shrubland (savannas is interspersed with riverside gallery forests and permanent swamps (veredas. Trypanosoma cruzi-infected native triatomines occur in the area, but the enzootic transmission of trypanosomatids remains poorly characterized. A parasitological survey involving sylvatic triatomines (166 Rhodnius neglectus collected from Mauritia flexuosa palms and small mammals (98 marsupials and 70 rodents, totaling 18 species was conducted in 18 sites (mainly gallery forests and veredas of the DF. Parasites were isolated, morphologically identified, and characterized by PCR of nuclear (mini-exon gene and kinetoplast DNA (kDNA. Six R. neglectus, seven Didelphis albiventris and one Akodon cursor were infected by trypanosomes; wild reservoir infection is documented for the first time in the DF. kDNA PCR detected T. cruzi in five R. neglectus and mini-exon gene PCR revealed T. cruzi I in isolates from D. albiventris. Parasites infecting one bug yielded T. rangeli KP1+ kDNA amplicons. In spite of the occurrence of T. cruzi-infected D. albiventris (an important wild and peridomestic reservoir and R. neglectus (a secondary vector displaying synanthropic behavior, a low-risk of human Chagas disease transmission could be expected in the DF, considering the low prevalence infection recorded in this work. The detection of T. rangeli KP1+ associated with R. neglectus in the DF widens the known range of this parasite in Brazil and reinforces the hypothesis of adaptation of T. rangeli populations (KP1+ and KP1- to distinct evolutionary Rhodnius lineages.O Distrito Federal (DF do Brasil está localizado no bioma Cerrado, um complexo de fisionomias savânicas incluindo matas de galeria e campos úmidos permanentes (veredas. Triatomíneos silvestres infectados por Trypanosoma cruzi ocorrem na área, mas a transmissão enzoótica de tripanossomatídeos permanece insuficientemente

  15. Aquatic Coleoptera from two protected areas of the Humid Chaco eco-region (Chaco Province, Argentina

    Directory of Open Access Journals (Sweden)

    María L. LIBONATTI

    2013-01-01

    Full Text Available Se presenta por primera vez una lista de las especies de coleópteros acuáticos que habitan en el parque nacional Chaco y en el refugio de vida silvestre El Cachapé, dos áreas protegidas pertenecientes a la ecorregión Chaco Húmedo. Se identificaron 122 especies incluidas en 45 géneros y 10 familias. Dos especies se citan por primera vez para la Argentina: Ora atroapicalis Pic y Ora semibrunnea Pic (Scirtidae. Once géneros (Dytiscidae: Anodocheilus Babington, Bidessonotus Régim - bart, Hemibidessus Zimmermann; Noteridae: Mesonoterus Sharp, Notomicrus Sharp; Hydraenidae: Hydraena Kugelann, Gymnochthebius Orchymont; Hydrophilidae: Chasmogenus Sharp, Chaetarthria Stephens; Scirtidae: Ora Clark, Scirtes Illiger y 41 especies son citados por primera vez en la provincia del Chaco. La alta diversidad de coleópteros acuáticos registrada destaca la importancia de estas áreas protegidas.

  16. Velações e partidas: o trauma em Antes de nascer o mundo, de Mia Couto

    Directory of Open Access Journals (Sweden)

    Juliana Ciambra Rahe

    2016-01-01

    Full Text Available Este trabalho tem como objetivo a análise do trauma na obra Antes de nascer o mundo, do moçambicano Mia Couto. Partindo das reflexões freudianas, pretendemos examinar os efeitos negativos e positivos do trauma, confrontando os posicionamentos dos personagens Silvestre Vitalício e Marta diante da experiência traumática vivenciada por cada um deles. Valendo-nos como referencial teórico, principalmente, das reflexões de Sigmund Freud, Márcio Seligmann-Silva e Stuart Hall, examinaremos como a narrativa da catástrofe possibilita aos personagens do romance a (reinvenção das identidades abaladas pelo trauma.

  17. ALERGIA EN EL HUMANO INDUCIDA POR LA SALIVA DE INSECTOS DE LA FAMILIA CULICIDAE

    Directory of Open Access Journals (Sweden)

    Ligia Inés Moncada Álvarez

    2011-04-01

    Full Text Available Se hace una revisión de las moléculas que inoculan los insectos de la familia Culicidae al momento de la picadura y los mecanismos que muestran sus hospederos para contrarrestarlos y cómo algunas de esas moléculas, especialmente las enzimas se convierten en alérgenos que inducen una respuesta de amplio espectro, que va desde una pápula al momento de la picadura hasta una reacción anafiláctica. De la misma manera se analizan las posibilidades de diagnóstico con moléculas silvestres y antígenos recombinantes, lo mismo que pautas de tratamiento.

  18. Registros de zopilote rey (Sarcoramphus papa en el área de Laguna de Términos, Campeche, México

    Directory of Open Access Journals (Sweden)

    Mircea Hidalgo-Mihart

    2012-07-01

    Full Text Available Reportamos la presencia de dos individuos juveniles de zopilote rey, Sarcoramphus papa, en la Selva La Montaña localizada al suroeste del Área de Protección de Flora y Fauna Silvestre Laguna de Términos, Campeche, México. Realizamos el registro por medio de fotografías utilizando cámaras trampa. La presencia de esta especie protegida en el área evidencia la importancia que tiene la región de la Selva La Montaña para la conservación de la biodiversidad, especialmente para especies en peligro de extinción.

  19. Are fluctuations in energy consumption per capita transitory? Evidence from a panel of Pacific Island countries

    International Nuclear Information System (INIS)

    Mishra, Vinod; Sharma, Susan; Smyth, Russell

    2009-01-01

    This study applies the panel stationarity test developed by [Carrion-i-Silvestre et al 2005. Breaking the panels: An application to GDP per capita. Econometrics Journal 8, 159-175] to examine the stationarity of energy consumption per capita for a panel of 13 Pacific Island countries over the period 1980-2005. This test has the advantage that it allows for multiple structural breaks at unknown dates that can differ across countries and can account for all forms of cross-sectional correlation between countries. The conclusion from the study is that energy consumption per capita in approximately 60% of countries is stationary and that energy consumption per capita for the panel as a whole is stationary. The study offers several suggestions for modelling energy consumption and policy-making in the Pacific Islands.

  20. Is energy consumption per capita broken stationary? New evidence from regional-based panels

    International Nuclear Information System (INIS)

    Chen, P.-F.; Lee, C.-C.

    2007-01-01

    For the first time, a new panel unit root testing procedure, developed by [51]Carrion-i-Silvestre et al. [2005. Breaking the panels: an application to GDP per capita. Econometrics Journal 8, 159-175], is applied to re-investigate the stationarity of energy consumption per capita for 7 regional panel sets covering the 1971-2002 period. With structural breaks and cross-sectional correlations introduced into the model, it becomes clear that all regional-based panels of energy consumption per capita are stationary. The structural breakpoints identify the likely causes of major changes in energy consumption in the past. The findings underscore the importance of accounting for exogenous shocks to a series and offer several important implications for policy makers and energy economists