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Sample records for akodon molinae rodentia

  1. Robertsonian chromosome polymorphism of Akodon molinae (Rodentia: Sigmodontinae: analysis of trivalents in meiotic prophase Polimorfismo cromosómico Robertsoniano de Akodon molinae (Rodentia: Sigmodontinae

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    RAÚL FERNÁNDEZ-DONOSO

    2001-03-01

    Full Text Available Akodon molinae (with 2n = 42-43-44 and an FN = 44 shows a remarkable polymorphism of chromosome 1 in natural and laboratory populations. Specimens 2n = 42, named single homozygotes (SH, have a chromosome pair 1 formed by two large metacentric chromosomes. Specimens 2n = 3, heterozygotes (Ht, have one chromosome 1 and two medium-sized subtelocentric chromosomes, 1a and 1b, which are homologous with the long and short arms of chromosome 1 respectively. Specimens 2n = 44 are double homozygotes (DH, with just two pairs of medium-sized subtelocentric chromosomes, 1a and 1b. Analysis of meiotic metaphases I and II showed that anomalous segregation occurs more frequently in spermatocytes carrying the 1a and 1b chromosomes. This would disturb gametogenesis and other reproductive and developmental processes, producing a marked decrease in viability of DH individuals. There is, as yet, no satisfactory explanation for these phenomena. To investigate structural elements which might explain such segregational anomalies, we have studied bivalent and trivalent synapsis in pachytene spermatocytes from SH, Ht and DH specimens. Of a total of 80 spermatocyte nuclei microspreads, the following results were obtained: of 16 microspreads from two SH individuals, 20 autosomic bivalents plus the XY bivalent were observed; of 48 microspreads from three Ht individuals, 19 autosomic bivalents, 1 trivalent and an XY bivalent were seen; and of the 16 microspreads from two DH individuals, 21 autosomic bivalents plus the XY bivalent were found. Trivalents analysed showed complete pairing between the short arms of 1a and 1b, and having an apparently normal synaptonemal complex (SC with lengths of 1 and 2.8 µm. The trivalent SC showed three telomeric ends, corresponding to arms: q1 and q1a; p1 and q1b; and p1a and p1b, with attachment plates to the nuclear envelope of normal organisation. None of the trivalents showed asynapsis or desynapsis between p1a and p1b, nor an

  2. Cuterebrid parasitism (Rogenhofera bonaerensis) on the shrubland mouse (Akodon molinae), in Argentina.

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    Brigada, A M; Tripole, E S; Zuleta, G A

    1992-10-01

    We evaluated the influence of temperature, rainfall, and host relative abundance on Rogenhofera bonaerensis (Diptera, Cuterebridae) parasitism prevalence in shrubland mouse (Akodon molinae) populations in central Argentina, from February 1983 to December 1987. Parasitism did not vary significantly with host age: juvenile-subadults (32%), adults (26%), and old adults (29%). Females were more frequently parasitized (36%) than were males (20%). There was no correlation between parasitism and reproductive activity. Infested hosts were recorded most commonly in summer (January to March, 19%), and in fall (April to June, 30%). During the dry season, July through November, cuterebrid parasitism averaged only 3%. The monthly prevalence of parasitism throughout the year was not associated either with monthly precipitation nor with mean monthly temperature at the time of sampling. But a 2 to 3 month time-lag effect of both climatic variables on parasitism was recorded. Bot fly prevalence was correlated to an index of host density. We propose climate and host availability as important factors affecting bot fly parasitism in the semiarid shrubland of central Argentina. PMID:1474666

  3. Metabolic rates and thermoregulatory characteristics of Akodon azarae (Rodentia: Sigmodontinae Tasas metabólicas y características termorregulatorias de Akodon azarae (Rodentia: Sigmodontinae

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    C. DANIEL ANTINUCHI

    2000-03-01

    Full Text Available In this work, we evaluated the energetic status, activity daily metabolic rate, thermoregulatory capacity and the existence of torpor in Akodon azarae (Fisher 1829. Basal metabolic rate (BMR was similar to the expected value from Kleiber´s, and also according to the BMR of phylogenetically related species. No statistical difference in BMR between sexes was detected. For both males and females, activity daily metabolic rate was 235 % of BMR. Body temperature was not statistically different, neither at different ambient temperatures nor between sexes. In the thermoneutral zone, body temperature was 36.1 ± 1.5 °C. Thermal conductance was lower than the expected for mammals whereas thermoregulatory capacity was 136 % of the expected. Akodon azarae did not show evidence of torporEn este trabajo fueron evaluadas, para Akodon azarae (Fisher 1829, la tasa metabólica basal (BMR y de actividad diaria así como la capacidad termorregulatoria y la posible existencia de torpor. La BMR no presentó diferencias estadísticas con la esperada por la ecuación de Kleiber así como con la esperada para especies filogenéticamente relacionadas. Tampoco fueron detectadas diferencias significativas en la BMR entre sexos. La tasa metabólica de actividad diaria para ambos sexos fue el 235 % de la BMR. La temperatura corporal no presentó variaciones entre individuos mantenidos a diferentes temperaturas ambiente ni tampoco entre sexos y en termoneutralidad fue de 36,1 ± 1,5 °C. Por otra parte, la conductancia térmica fue menor a la esperada mientras que la capacidad termorregulatoria fue el 136% de la esperada. Akodon azarae no presenta sopor

  4. Karyotypes of Akodon orophilus Osgood 1913 and Thomasomys sp. (Rodentia: Sigmodontinae from Huánuco, Peru

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    Víctor Pacheco

    2012-10-01

    Full Text Available Conventional chromosomal preparations were made of three native mice from Huánuco, Peru: a male and a female of Thomasomys sp., and a male of Akodon orophilus. Thomasomys sp. had a karyotype of 2n = 42, XY (n = 21, meanwhile A. orophilus presented 2n = 22, XY (n = 11. Comparisons between chromosomal pairs from the existent literature indicate that both are new karyotypes. Thomasomys sp. has a distinct sexual Y chromosome, the only metacentric (m reported for the genus. The chromosomes X and Y of A. orophilus are acrocentrics (a; and the length of chromosome Y (2/3 of the length of X distinguishes A. orophilus from other congeneric. Because the structural differences between the sexual chromosomes usually generates mechanism of reproductive isolation at intraspecific level and are bigger still in interspecific crosses, we concluded that the karyotypes reported here support the validity of the species A. orophilus and suggest that Thomasomys sp. represents a new species to science.

  5. Ectoparasite occurrence associated with males and females of wild rodents Oligoryzomys flavescens (Waterhouse) and Akodon azarae (Fischer) (Rodentia: Cricetidae: Sigmodontinae) in the Punta Lara Wetlands, Argentina

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    Lareschi, Marcela

    2010-01-01

    The objective of this research was to study infestation parameters and indexes of ectoparasites associated with each sex of the wild rodents Oligoryzomys flavescens (Waterhouse) and Akodon azarae (Fischer) in the Punta Lara wetlands, Argentina. A trend towards higher mean abundance (MA) and ectoparasite specific richness was observed in males of O. flavescens whereas those values were similar for both A. azarae sexes. The prevalence of the following ectoparasites was significantly higher on m...

  6. Ectoparasite occurrence associated with males and females of wild rodents Oligoryzomys flavescens (Waterhouse) and Akodon azarae (Fischer) (Rodentia: Cricetidae: Sigmodontinae) in the Punta Lara wetlands, Argentina.

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    Lareschi, Marcela

    2010-01-01

    The objective of this research was to study infestation parameters and indexes of ectoparasites associated with each sex of the wild rodents Oligoryzomys flavescens (Waterhouse) andAkodon azarae (Fischer) in the Punta Lara wetlands, Argentina. A trend towards higher mean abundance (MA) and ectoparasite specific richness was observed in males of O. flavescens whereas those values were similar for both A. azarae sexes. The prevalence of the following ectoparasites was significantly higher on males (P<0.05): Mysolaelaps microspinosus Fonseca (65.2%) and Hoplopleura travassosi Werneck (73.9%) on O. flavescens, and Ixodes loricatus Neumann (71.4%) on A. azarae. Only H. travassosi mean abundance was significantly higher on males (MA=44.1). Since I. loricatus and Hoplopleura spp. are involved in the transmission of pathogens that cause diseases in animals and humans, and whose reservoirs are rodent hosts, these results are epidemiologically important. PMID:21120393

  7. Ugni Molinae, Ugni

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    The Encylopedia of Fruit and Nuts is designed as a research reference source on temperate and tropical fruit and nut crops. Ugni molinae (Myrtaceae) is native primarily to southern Chile with some populations in Bolivia. The aromatic, somewhat seedy, dark red fruit are primarily harvested from the w...

  8. Detection of the first incidence of Akodon paranaensis naturally infected with the Jabora virus strain (Hantavirus in Brazil

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    Renata Carvalho de Oliveira

    2012-05-01

    Full Text Available We characterised hantaviruses circulating in different Akodon rodent species collected in midwestern Santa Catarina (SC, southern Brazil, where the Jabora hantavirus (JABV strain was first identified in Akodon montensis. Genetic and phylogenetic analyses based on a partial S segment indicated that, in SC, Akodon paranaensis and A. montensis carried the same type of hantavirus. Additionally, we conducted the first genomic characterisation of the complete S segment from the Brazilian JABV strain. This is the first report of A. paranaensis infected with the JABV.

  9. The identity of Rana lutea Molina, 1782 (Amphibia, Anura).

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    Ferraro, Daiana P; Lavilla, Esteban O

    2013-01-01

    Rana lutea is one of the two anuran species described in 1782 by the Chilean born priest and naturalist Juan Ignacio Molina, and its nomenclatural history is confusing. After a detailed revision of the pertinent literature, we demonstrate that Bufo thaul Schneider, 1799, is a junior objective synonym of Rana lutea Molina, 1782, but based on the usage of both nomina, we revert the precedence and consider Rana lutea Molina, 1782 as a nomen oblitum whereas Bufo thaul Schneider, 1799 is a nomen protectum. Thus, the authorship of the species currently known as Pleurodema thaul (Lesson, 1826) changes to Pleurodema thaul (Schneider, 1799). PMID:24614468

  10. Effects of high density on spacing behaviour and reproduction in Akodon azarae: A fencing experiment

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    Ávila, Belén; Bonatto, Florencia; Priotto, José; Steinmann, Andrea R.

    2016-01-01

    We studied the short term spacing behavioural responses of Pampean grassland mouse (Akodon azarae) with regard to population density in four 0.25 ha enclosures (two control and two experimental) in the 2011 breeding season. Based on the hypothesis that A. azarae breeding females exhibit spacing behaviour, and breeding males show a fusion spatial response, we tested the following predictions: (1) home range size and intrasexual overlap degree of females are independent of population density values; (2) at high population density, home range size of males decreases and the intrasexual home range overlap degree increases. To determine if female reproductive success decreases at high population density, we analyzed pregnancy rate, size and weight of litters, and period until fecundation in both low and high enclosure population density. We found that both males and females varied their home range size in relation to population density. Although male home ranges were always bigger than those of females in populations with high density, home range sizes of both sexes decreased. Females kept exclusive home ranges independent of density values meanwhile males decreased home range overlap in high breeding density populations. Although females produced litters of similar size in both treatments, weight of litter, pregnant rate and period until fecundation varied in relation to population density. Our results did not support the hypothesis that at high density females of A. azarae exhibit spacing behaviour neither that males exhibit a fusion spatial response.

  11. Variation in phenolic compounds of Ugni molinae populations and their potential use as antioxidant supplement

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    Marcia A. Avello

    2012-01-01

    Full Text Available In the present work we carried out a comparative study of total phenolic contents and antioxidant capacity of aqueous leaf extracts of Ugni molinae Turcz., Myrtaceae (infusion and Soxhlet extracted prepared from continent and Juan Fernández Island samples. The results revealed that total phenol content (TPC, tannins (TTC and flavonoids (TFC for U. molinae extracts (infusion and Soxhlet extracts from island leaves were 38.5, 56.7 and 37.5% higher than those obtained with leaves from the continent, respectively. Also, HPLC profiles showed important differences between U. molinae populations. In vitro antioxidant capacity (scavenging of DPPH radical for 1% infusion and aqueous extract (Soxhlet method of U. molinae from island samples, was 15% greater than from continent samples. Further, in vivo impact of U. molinae intake (1% infusion was studied in plasma samples obtained from healthy volunteers. Participants that consumed tea prepared with leaves from island population showed higher TBARS reduction and plasma antioxidant capacity (TEAC-CUPRAC than those who consumed tea prepared with leaves from continental population. The conditions of the territory in which U. molinae populations growth could explain the differences in their composition and activity. According to results, island U. molinae populations could be an important source of study for the development of an antioxidant supplement, and thereby contribute to the use of this species that has becoming an ecological problem in the island.

  12. Variation in phenolic compounds of Ugni molinae populations and their potential use as antioxidant supplement

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    Marcia A. Avello

    2013-02-01

    Full Text Available In the present work we carried out a comparative study of total phenolic contents and antioxidant capacity of aqueous leaf extracts of Ugni molinae Turcz., Myrtaceae (infusion and Soxhlet extracted prepared from continent and Juan Fernández Island samples. The results revealed that total phenol content (TPC, tannins (TTC and flavonoids (TFC for U. molinae extracts (infusion and Soxhlet extracts from island leaves were 38.5, 56.7 and 37.5% higher than those obtained with leaves from the continent, respectively. Also, HPLC profiles showed important differences between U. molinae populations. In vitro antioxidant capacity (scavenging of DPPH radical for 1% infusion and aqueous extract (Soxhlet method of U. molinae from island samples, was 15% greater than from continent samples. Further, in vivo impact of U. molinae intake (1% infusion was studied in plasma samples obtained from healthy volunteers. Participants that consumed tea prepared with leaves from island population showed higher TBARS reduction and plasma antioxidant capacity (TEAC-CUPRAC than those who consumed tea prepared with leaves from continental population. The conditions of the territory in which U. molinae populations growth could explain the differences in their composition and activity. According to results, island U. molinae populations could be an important source of study for the development of an antioxidant supplement, and thereby contribute to the use of this species that has becoming an ecological problem in the island.

  13. Litter Decomposition of Acacia caven (Molina Molina and Lolium multiflorum Lam. in Mediterranean Climate Ecosystems Descomposición de Hojarascas de Acacia caven (Molina Molina y Lolium multiflorum Lam. en Ecosistemas de Clima Mediterráneo

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    Ingrid Martínez G

    2010-09-01

    Full Text Available The ecosystems of the Mediterranean interior dryland of Chile, dominated by an espinal agroecosystem of Acacia caven (Molina Molina, show low productivity as a result of soil degradation. The objective of this study was to evaluate litter decomposition of A. caven and Lolium multiflorum Lam. in espinal ecosystems: well preserved (Wp 50 to 80%, typical (Pd 25 to 50%, and degraded (De with 10 to 25% cover. During 420 d and starting in April 2004 until August 2005, weight loss in litter bags and chemical composition (hemicellulose, cellulose, lignin, non-structural components, ash, N, C, C/N ratio, and P were determined by using near infrared reflectance spectroscopy (NIRS and the Van Soest protocol. Weight loss ranged from 31 to 52% in L. multiflorum and 26 to 40% in A. caven after 420 d. During the chemical decomposition process of L. multiflorum, cellulose degradation was relevant in the labile phase while lignin was important in the recalcitrant phase. On the other hand, non-structural components and cellulose were degraded in the labile phase and lignin in the recalcitrant stage for A. caven. Moreover, both litters improved N concentration during the decomposition process. Espinal ecosystems with higher canopy cover (Pd and Wp had a positive influence, and showed early effects during the decomposition process, especially in the De espinal ecosystem, probably because of the microenvironmental conditions it generated. A better knowledge of the dynamics of litter decomposition in ecosystems was achieved by using both techniques: litter bags and NIRS.Los ecosistemas del secano interior mediterráneo de Chile presentan una baja productividad debido a la degradación de los suelos, dominados por un agroecosistema espinal de Acacia caven (Molina Molina. El objetivo de este estudio fue evaluar la descomposición de hojarascas de A. caven y Lolium multiflorum Lam., en ecosistemas espinales: densos (Wp con cobertura de 50-80%, poco densos (Pd 25-50% y

  14. Variation in phenolic compounds of Ugni molinae populations and their potential use as antioxidant supplement

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    Marcia A. Avello; Edgar R. Pastene; Evelyn D. Bustos; Magalis L. Bittner; José A. Becerra

    2012-01-01

    In the present work we carried out a comparative study of total phenolic contents and antioxidant capacity of aqueous leaf extracts of Ugni molinae Turcz., Myrtaceae (infusion and Soxhlet extracted) prepared from continent and Juan Fernández Island samples. The results revealed that total phenol content (TPC), tannins (TTC) and flavonoids (TFC) for U. molinae extracts (infusion and Soxhlet extracts) from island leaves were 38.5, 56.7 and 37.5% higher than those obtained with leaves from the c...

  15. Insecticidal Activity of Peumus boldus Molina Essential Oil against Sitophilus zeamais Motschulsky Actividad Insecticida del Aceite Esencial de Peumus boldus Molina sobre Sitophilus zeamais Motschulsky

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    Jessica Betancur R; Gonzalo Silva A; J. Concepción Rodríguez M; Susana Fischer G; Nelson Zapata S.M

    2010-01-01

    In stored grains, the main agents diminishing production are insects, which can produce losses between 20% and 80% before harvest or under storage. The insecticidal properties of the essential oil of fresh leaves of Peumus boldus Molina against maize weevil (Sitophilus zeamais Motschulsky) adults were determined under laboratory conditions. The highest mortality (100%) was achieved at 4% concentration by contact with a treated glass surface. The same concentration in impregnated corn (Zea may...

  16. Microencapsulation of maqui (Aristotelia chilensis Molina Stuntz) leaf extracts to preserve and control antioxidant properties

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    Leslie Vidal J; Marcia Avello L; Cristina Loyola C; Jorge Campos P; Pedro Aqueveque M; Stephanie R. Dungan; Maria Galotto L; Abel Guarda M

    2013-01-01

    Microencapsulation technology is an alternative to stabilize stress factors and protect food ingredients or additives, which include environmentally sensitive bioactive principles in protective matrices to increase their functionality and life span. The objective of this research was to study conditions to obtain microcapsules with antioxidant capacity from a maqui (Aristotelia chilensis [Molina] Stuntz, Elaeocarpaceae) leaf extract by emulsification and subsequent retention after microencaps...

  17. Antioxidant capacity of Ugni molinae fruit extract on human erythrocytes: an in vitro study.

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    Suwalsky, Mario; Avello, Marcia

    2014-08-01

    Ugni molinae is an important source of molecules with strong antioxidant activity widely used as a medicinal plant in Southern Chile-Argentina. Total phenol concentration from its fruit extract was 10.64 ± 0.04 mM gallic acid equivalents. Analysis by means of HPLC/MS indicated the presence of the anthocyanins cyanidin and peonidin, and the flavonol quercitin, all in glycosylated forms. Its antioxidant properties were assessed in human erythrocytes in vitro exposed to HClO oxidative stress. Scanning electron microscopy showed that HClO induced an alteration in erythrocytes from a normal shape to echinocytes; however, this change was highly attenuated in samples containing U. molinae extracts. It also had a tendency in order to reduce the hemolytic effect of HClO. In addition, X-ray diffraction experiments were performed in dimyristoylphosphatidylcholine (DMPC) and dimyristoylphosphatidylethanolamine bilayers, classes of lipids preferentially located in the outer and inner monolayers, respectively, of the human erythrocyte membrane. It was observed that U. molinae only interacted with DMPC. Results by fluorescence spectroscopy on DMPC large unilamellar vesicles and isolated unsealed human erythrocyte membranes also showed that it interacted with the erythrocyte membrane and DMPC. It is possible that the location of U. molinae components into the membrane outer monolayer might hinder the diffusion of HClO and of free radicals into cell membranes and the consequent decrease of the kinetics of free radical reactions. PMID:24928227

  18. Recasting Madrid and Its Characters in Munoz Molina's "Los misterios de Madrid"

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    Long, Sheri Spaine

    2009-01-01

    "Los misterios de Madrid" (1992) provides a burlesque novelistic portrayal of the changing capital city and its inhabitants in the early 1990s. Spanish writer Antonio Munoz Molina creates vignettes of Madrid's people and places while showing the capital as a destination for both foreign-born immigrants and provincial Spaniards alike. In…

  19. Free radical scavenging potential of Lagenaria siceraria (Molina) Standl fruits extract

    Institute of Scientific and Technical Information of China (English)

    Vijayakumar Mayakrishnan; Selvi Veluswamy; Priya Kannappan; Noorlidah Abdullah

    2013-01-01

    Objective: To elucidate free radical scavenging activity of ethanolic extract Lagenaria siceraria (L. siceraria) (Molina) fruit. Methods: The free radical scavenging activity of the L. siceraria (Molina) fruit extract was assayed by using α,α-diphenyl-β-picrylhydrazyl (DPPH), 2,20-azinobis 3-ethyl benzothiazoline-6-sulfonate (ABTS), FRAP, reducing power, chelating ability and β-carotene bleaching assay. Results: The IC50 values of DPPH and ABTS radical-scavenging activity was found to be 1.95 mg/mL and 19 mg/mL, respectively. In ferrous chelation assay, the percentage of inhibition was found to be 89.21%. The reducing power of ethanolic extract of L. siceraria (Molina) fruit was 0.068 at 1 mg/mL and increased to 0.192 at 5 mg/mL. Theβ-carotene linoleate bleaching assay was 46.7% at 5 mg/mL and antioxidant activity using FRAP at 0.305 for 1 mg/mL to 0.969 for 5 mg/mL. Conclusions: The results indicate that L. siceraria (Molina) fruit could be an important sources of natural radical scavengers.

  20. «Héctor Molina Riaño»

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    Yanoy Morejón Mesa

    2008-01-01

    Full Text Available El presente trabajo se realizó en los campos pertenecientes a la Empresa Azucarera «Héctor Molina Riaño», con el objetivo de desarrollar una metodología que permita realizar una evaluación energética y económica durante la recogida y transportación de los residuos agrícolas cañeros (RAC hasta la industria, partiendo de la determinación de los volúmenes de RAC, en campos cosechados con máquinas CAMECO y en el centro de limpieza. Para esto se utilizaron utensilios e instrumentos reglamentados por las normas de medición y control de la calidad. El valor de los RAC quedados en el campo ascendió a 3,87 t/ha, que pueden ser recogidos y transportados para producir energía y el índice de RAC para estas condiciones fue de 0,11. El volumen total de RAC a transportar desde el campo alcanzó 26 524,74 t y desde el centro de limpieza alcanzó 28 051,70 t. Según criterios planteados por diversos autores se realizó la evaluación energética de la recogida y transportación de los RAC hasta la industria, obteniéndose una energía requerida total de 680 478,34 Mcal y la energía que se puede producir con los RAC recogidos y transportado s es de 256 509 268 Mcal. También se realizó la evaluación económica, obteniéndose un gasto económico total de 411 256,27 pesos, costo de la energía producida de 909 607 pesos, con un costo unitario de 7,53 peso/t de RAC recogido y transportado y 16,66 peso/t de RAC utilizados en la generación de energía. Con estos resultados se evidencia que es factible el uso de los RAC como combustible alternativo en el sector azucarero.

  1. Phenolic compounds and antioxidant activity of hydroalcoholic extracts of wild and cultivated murtilla (Ugni molinae Turcz.)

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    Thalita Riquelme Augusto; Erick Sigisfredo Scheuermann Salinas; Severino Matias de Alencar; Marisa Aparecida Bismara Regitano D'Arce; Adriano Costa de Camargo; Thais Maria Ferreira de Souza Vieira

    2014-01-01

    Over the last decade a considerable increase in the number of studies addressing the use of antioxidants from natural sources has led to the identification and understanding of the potential mechanisms of biologically active components. This results from the fact that they can be used to replace synthetic antioxidants commonly used in food. Murtilla (Ugni molinae Turcz) is a native berry grown in Chile, and in the present study, the phenolic composition and antioxidant activity of its fruits ...

  2. Protective effect of Ugni molinae Turcz against oxidative damage of human erythrocytes.

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    Suwalsky, M; Orellana, P; Avello, M; Villena, F

    2007-01-01

    Ugni molinae Turcz, also known as "Murtilla", is a plant that grows in the south of Chile. Infusions of its leaves have long been used in traditional native herbal medicine. The chemical composition of the leaves indicates the presence of polyphenols, which have antioxidant properties. In the present work, the antioxidant properties of U. molinae were evaluated in human erythrocytes exposed in vitro to oxidative stress induced by HClO. The experiments were carried out by scanning electron microscopy (SEM) and hemolysis measurements. The SEM observations showed that HClO induced a morphological alteration in the red blood cells from a discoid to an echinocytic form. According to the bilayer couple hypothesis, the formation of echinocytes indicates that HClO was inserted in the outer leaflet of the erythrocyte membrane. However, a concentration as low as 10 microM gallic acid equivalents (GAE) U. molinae aqueous extract neutralized the shape change effect of HClO applied in a concentration as high as 0.25 mM. The significant protection of U. molinae aqueous extract was also shown in the hemolysis experiments. In fact, very low concentrations of the extract considerably reduced the deleterious capacity of HClO to induce hemolysis in red blood cells. It is concluded that the location of the extract components into the membrane bilayer and the resulting restriction on its fluidity might hinder the diffusion of HClO and its consequent damaging effects. This conclusion can also imply that this restriction could apply to the diffusion of free radicals into cell membranes and the subsequent decrease of the kinetics of free radical reactions. PMID:17030381

  3. Avifauna en el campus de la Universidad Nacional Agraria la Molina (UNALM), Lima - Perú

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    Fernando Takano Goshima; Nadia Castro Izaguirre

    2007-01-01

    Se realizaron conteos mensuales de aves, entre Enero y Agosto de 2001, y avistamientos desde Setiembre de 2003 hasta Diciembre del mismo año, en las diferentes áreas del campus de la Universidad Nacional Agraria La Molina (UNALM, Lima). Como resultado se obtuvo una lista que incluye 46 especies vistas por lo menos en 3 ocasiones diferentes. La mayor parte de ellas pertenece al orden Passeriformes, mientras que dentro de las familias destacan Emberizidae, Columbidae y Psittacida...

  4. Analgesic activity of Ugni molinae (murtilla) in mice models of acute pain.

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    Delporte, C; Backhouse, N; Inostroza, V; Aguirre, M C; Peredo, N; Silva, X; Negrete, R; Miranda, H F

    2007-05-30

    Leaf extracts of Ugni molinae Turcz. (Myrtaceae) are used in Chilean folk medicine as analgesic and anti-inflammatory. The antinociceptive effect of dichloromethane (DCM), ethyl acetate (EA) and methanol (ME) leaf extracts was assessed by intraperitoneal, oral and topical administration in writhing, tail flick, and tail formalin tests in mice. The extracts showed a dose-dependent antinociceptive activity in all the assays under different administration routes. The ED(50) values for the different tests for the DCM, EA, ME extract and reference drug (ibuprofen) were as follows. Writhing test in acetic acid (i.p. administration): 0.21, 0.37, 1.37 and 0.85mg/kg, respectively; tail flick test (oral administration): 199, 189, 120 and 45.9mg/kg. The EC(50) values for tail flick test were (topical administration): 2.0, 0.35, 1.4 and 8.2% (w/v), respectively; and the topical analgesic effects were (formalin assay) 75.5, 77.5, 31.6 and 76.5%, respectively. Ugni molinae extracts produce antinociception in chemical and thermal pain models through a mechanism partially linked to either lipooxygenase and/or cyclooxygenase via the arachidonic acid cascade and/or opioid receptors. Flavonoid glycosides and triterpenoids have been isolated from the plant and can be associated with the observed effect. Our results corroborate the analgesic effects of Ugni molinae, and justify its traditional use for treating pain. PMID:17403589

  5. The helminth community of Apodemus sylvaticus (Rodentia, Muridae) in the Sierra de Gredos (Spain)

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    Fuentes, M. V.; Sáez, S.; Trelis, M.; Muñoz-Antoli, C.; Esteban, J. G.

    2004-01-01

    Comunidad helmintiana de Apodemus sylvaticus (Rodentia, Muridae) en la Sierra de Gredos (España).— Como parte de los estudios helmintofaunísiticos que sobre pequeños mamíferos se están llevando a cabo en la península ibérica, la sierra española de Gredos fue estudiada. La comunidad helmintiana del ratón de campo, Apdoemus sylvaticus (Rodentia, Muridae), fue analizada. Cualitativamente, 13 especies de helmintos fueron detectadas: Plagiorchis sp. I y Plagiorchis sp. II (Trematoda...

  6. Clues on Syntenic Relationship among Some Species of Oryzomyini and Akodontini Tribes (Rodentia: Sigmodontinae).

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    Suárez, Pablo; Nagamachi, Cleusa Yoshiko; Lanzone, Cecilia; Malleret, Matias Maximiliano; O'Brien, Patricia Caroline Mary; Ferguson-Smith, Malcolm Andrew; Pieczarka, Julio Cesar

    2015-01-01

    Sigmodontinae rodents represent one of the most diverse and complex components of the mammalian fauna of South America. Among them most species belongs to Oryzomyini and Akodontini tribes. The highly specific diversification observed in both tribes is characterized by diploid complements, which vary from 2n = 10 to 86. Given this diversity, a consistent hypothesis about the origin and evolution of chromosomes depends on the correct establishment of synteny analyzed in a suitable phylogenetic framework. The chromosome painting technique has been particularly useful for identifying chromosomal synteny. In order to extend our knowledge of the homeological relationships between Akodontini and Oryzomyini species, we analyzed the species Akodon montensis (2n = 24) and Thaptomys nigrita (2n = 52) both from the tribe Akodontini, with chromosome probes of Hylaeamys megacephalus (2n = 54) of the tribe Oryzomyini. The results indicate that at least 12 of the 26 autosomes of H. megacephalus show conserved synteny in A. montensis and 14 in T. nigrita. The karyotype of Akodon montensis, as well as some species of the Akodon cursor species group, results from many chromosomal fusions and therefore the syntenic associations observed probably represent synapomorphies. Our finding of a set of such associations revealed by H. megacephalus chromosome probes (6/21; 3/25; 11/16/17; and, 14/19) provides phylogenetic information for both tribes. An extension of these observations to other members of Akodontini and Oryzomyini tribes should improve our knowledge about chromosome evolution in both these groups. PMID:26642204

  7. Late Cenozoic History of the Genus Micromys (Mammalia, Rodentia) in Central Europe

    Czech Academy of Sciences Publication Activity Database

    Horáček, I.; Knitlová, M.; Wagner, Jan; Kordos, L.; Nadachowski, A.

    2013-01-01

    Roč. 8, č. 5 (2013), e62498. E-ISSN 1932-6203 R&D Projects: GA ČR GA205/09/0184 Institutional support: RVO:67985831 Keywords : Mammalia * Rodentia * Genus Micromys * Late Cenozoic Subject RIV: DB - Geology ; Mineralogy Impact factor: 3.534, year: 2013

  8. Domestication in Murtilla (Ugni molinae) Reduced Defensive Flavonol Levels but Increased Resistance Against a Native Herbivorous Insect.

    Science.gov (United States)

    Chacón-Fuentes, Manuel; Parra, Leonardo; Rodriguez-Saona, Cesar; Seguel, Ivette; Ceballos, Ricardo; Quiroz, Andres

    2015-06-01

    Plant domestication can have negative consequences for defensive traits against herbivores, potentially reducing the levels of chemical defenses in plants and consequently their resistance against herbivores. We characterized and quantified the defensive flavonols from multiple cultivated ecotypes with wild ancestors of murtilla, Ugni molinae Turcz, an endemic plant from Chile, at different times of the year, and examined their effects on a native insect herbivore, Chilesia rudis Butler (Lepidoptera: Arctiidae). We hypothesized that domestication results in a decrease in flavonol levels in U. molinae plants, and that this negatively affected C. rudis performance and preference. Ethanolic extracts were made from leaves, stems, and fruit of murtilla plants for flavonol analysis. Flavonols identified were kaempferol, quercetin, rutin, and quercetin 3-D-β-glucoside, the last two being the most abundant. More interestingly, we showed differences in flavonol composition between wild and cultivated U. molinae that persisted for most of the year. Relative amounts of all four flavonols were higher in wild U. molinae leaves; however, no differences were found in the stem and fruit between wild and cultivated plants. In choice and no-choice assays, C. rudis larvae gained more mass on, and consumed more leaf material of, wild as compared with cultivated U. molinae plants. Moreover, when applied to leaves, larvae ate more leaf material with increasing concentrations of each flavonol compound. Our study demonstrates that domestication in U. molinae reduced the amount of flavonols in leaves as well as the performance and preference of C. rudis, indicating that these compounds stimulate feeding of C. rudis. PMID:26313969

  9. El “Mundus Subterraneus” de Juan Ignacio Molina o el geólogo como economista

    Directory of Open Access Journals (Sweden)

    Orrego G., Francisco

    2015-12-01

    Full Text Available In general, the work of the Chilean ex Jesuit Juan Ignacio Molina (1740-1829 has not been studied under the light of history of geology. This article attempts to reconstruct the origin and morphology of the ideas in which the Chilean naturalist developed about the internal structure of the Earth. We will see how the geological ideas elaborated by Molina went beyond the scientific reflection. The development of a particular discipline as political economy during the eighteenth century also influenced Juan Ignacio Molina´s thoughts about the internal organization of the Earth, geological processes and the descriptions of the nature of Chilean kingdom in the late eighteenth century.En general, la obra del ex jesuita chileno Juan Ignacio Molina (1740-1829 no ha sido estudiada con profundidad a la luz de la historia de la geología. Este artículo reconstruye el origen y la morfología de parte de las ideas que el naturalista chileno elaboró sobre la estructura interna de la Tierra. Se verá cómo las ideas geológicas desarrolladas por Molina fueron más allá de la simple reflexión científica. El desarrollo de una disciplina particular y novedosa como la economía política, también influyó en el tipo de reflexiones que Juan Ignacio Molina desarrolló sobre la organización interior de la Tierra, los procesos geológicos y las descripciones sobre la naturaleza del Reino de Chile a fines del siglo XVIII.

  10. The geological perspective of Italy and Chile by Abbot Juan Ignacio Molina between the 18th and 19th centuries

    Directory of Open Access Journals (Sweden)

    Marco Menichetti

    2011-09-01

    Full Text Available The first geological observations in Chile can be traced to Juan Ignacio Molina, a Jesuit priest who was born in 1740 in Chile and died in 1829 in Bologna, Italy. He received a scholarship education with a strong leaning towards philosophy, the humanities and the sciences at the Jesuit College in Concepcion. In 1767, when all the Jesuits were expelled from Chile and the spanish colonies, he took refuge in Italy, first in Imola and then in Bologna where he taught Greek at the University and later natural sciences at the Archiginnasio. During his stay in Bologna at the end of the 18th century, the Jesuit community continued to play an important role in the teaching of the sciences in spite of the Napoleonic occupation. In Bologna, as early as the 16th century, Ulisse Aldrovandi was developing new concepts in geology with his study and systematic collection of fossils. At the beginning of the 18th century, the naturalist and oceanographer L.F. Marsili and one of the fathers of paleontology, G. Monti, built of Aldrovandi's work and contributed to the growth of the Science Institute and the Natural History Museum in the city. It was in this cultural context that in 1782 Molina published in Italian language the Saggio sulla storia naturale del Chile. The book was divided into four chapters, the first two of which dealt with the earth sciences. In this work Molina repeatedly compares the north-south stretched landscapes, the volcanic activity and the geology of Italy and Chile. His next work, Memorie di storia naturale, was published in 1821 and was based on several lectures given by him at the Bologna Academy of Sciences. It contained fourteen Memoria -lectures- referred to different aspects of the natural sciences and six covered geological topics. In 1815, one of Molina's lectures -later Memoria XIV-, was published under the title Less noticed analogies in three kingdom of nature. In this lecture Molina discussed the similarities between minerals

  11. Exilios y nostalgias: Antonio Muñoz Molina y Milán Kundera

    OpenAIRE

    Gallego Cuiñas, Ana

    2007-01-01

    En los albores del siglo XXI y bajo el signo de la posmodernidad, Antonio Muñoz Molina y Milán Kundera llevan a cabo en “Valdemún”-un capítulo de Sefarad- y La ignorancia una serie de operaciones y articulaciones narrativas que tienen un común denominador: el tratamiento de las “interrogaciones existenciales” del exilio y la nostalgia. Ambos autores fraguan poéticas similares en lo que a la representación del horror del pasado se refiere, y apuestan en estos textos por un resca...

  12. Articulismo en democracia. Las columnas de Antonio Muñoz Molina

    Directory of Open Access Journals (Sweden)

    Natalia Corbellini

    2008-11-01

    Full Text Available The writer's column format related to Muñoz Molina's last novels (Sefarad. Una novela de novelas; Ventanas de Manhattan; Días de diario , where the concept of genre is not clear, they alternate narrative and argumentation, tales and essay. I will analyze the writing of published columns as "Ida y vuelta" in the suplement Babelia of El país, as a format that allows experimentation with the language and the narrator; and simultaneously constructs an ego with the will of style, and for providing a rewatching form of knowledge and thought

  13. Experimental Infection of Calomys callosus (Rodentia, Cricetidae by Toxoplasma gondii

    Directory of Open Access Journals (Sweden)

    Favoreto-Junior Sílvio

    1998-01-01

    Full Text Available Calomys callosus, Rengger 1830 (Rodentia, Cricetidae, a wild rodent found in Central Brazil, was studied to investigate its susceptibility to Toxoplasma gondii experimental infection and its humoral immune response against this protozoa. The electrophoretic profile of the serum proteins of C. callosus showed that IgG, which shows no affinity to Protein A, has higher cross reactivity with rat IgG than with IgG from other rodents. The susceptibility assay was performed by inoculation groups of animals with various suspensions of T. gondii tachyzoites from 102 to 106 parasites. All animals died between 3 and 9 days after infection and the kinetics of antibody synthesis was determined. Basically, they recognized predominantly the immunodominant antigen SAG-1 (P30. The immunohistochemistry assays revealed that the liver was the most heavily infected organ, followed by the spleen, lungs, intestine, brain and kidneys. It can be concluded that C. callosus is an excellent experimental model for acute phase of Toxoplasma infection

  14. A Transitional Gundi (Rodentia: Ctenodactylidae) from the Miocene of Israel

    Science.gov (United States)

    López-Antoñanzas, Raquel; Gutkin, Vitaly; Rabinovich, Rivka; Calvo, Ran; Grossman, Aryeh

    2016-01-01

    We describe a new species of gundi (Rodentia: Ctenodactylidae: Ctenodactylinae), Sayimys negevensis, on the basis of cheek teeth from the Early Miocene of the Rotem Basin, southern Israel. The Rotem ctenodactylid differs from all known ctenodactylid species, including Sayimys intermedius, which was first described from the Middle Miocene of Saudi Arabia. Instead, it most resembles Sayimys baskini from the Early Miocene of Pakistan in characters of the m1-2 (e.g., the mesoflexid shorter than the metaflexid, the obliquely orientated hypolophid, and the presence of a strong posterolabial ledge) and the upper molars (e.g., the paraflexus that is longer than the metaflexus). However, morphological (e.g., presence of a well-developed paraflexus on unworn upper molars) and dimensional (regarding, in particular, the DP4 and M1 or M2) differences between the Rotem gundi and Sayimys baskini distinguish them and testify to the novelty and endemicity of the former. In its dental morphology, Sayimys negevensis sp. nov. shows a combination of both the ultimate apparition of key-characters and incipient features that would be maintained and strengthened in latter ctenodactylines. Thus, it is a pivotal species that bridges the gap between an array of primitive ctenodactylines and the most derived, Early Miocene and later, gundis. PMID:27049960

  15. The geological perspective of Italy and Chile by Abbot Juan Ignacio Molina between the 18th and 19th centuries La perspectiva geolgica del Abate Juan Ignacio Molina sobre Italia y Chile entre los siglos XVIII y XIX

    Directory of Open Access Journals (Sweden)

    Marco Menichetti

    2011-09-01

    Full Text Available The first geological observations in Chile can be traced to Juan Ignacio Molina, a Jesuit priest who was born in 1740 in Chile and died in 1829 in Bologna, Italy. He received a scholarship education with a strong leaning towards philosophy, the humanities and the sciences at the Jesuit College in Concepcion. In 1767, when all the Jesuits were expelled from Chile and the spanish colonies, he took refuge in Italy, first in Imola and then in Bologna where he taught Greek at the University and later natural sciences at the Archiginnasio. During his stay in Bologna at the end of the 18th century, the Jesuit community continued to play an important role in the teaching of the sciences in spite of the Napoleonic occupation. In Bologna, as early as the 16th century, Ulisse Aldrovandi was developing new concepts in geology with his study and systematic collection of fossils. At the beginning of the 18th century, the naturalist and oceanographer L.F. Marsili and one of the fathers of paleontology, G. Monti, built of Aldrovandi's work and contributed to the growth of the Science Institute and the Natural History Museum in the city. It was in this cultural context that in 1782 Molina published in Italian language the Saggio sulla storia naturale del Chile. The book was divided into four chapters, the first two of which dealt with the earth sciences. In this work Molina repeatedly compares the north-south stretched landscapes, the volcanic activity and the geology of Italy and Chile. His next work, Memorie di storia naturale, was published in 1821 and was based on several lectures given by him at the Bologna Academy of Sciences. It contained fourteen Memoria -lectures- referred to different aspects of the natural sciences and six covered geological topics. In 1815, one of Molina's lectures -later Memoria XIV-, was published under the title Less noticed analogies in three kingdom of nature. In this lecture Molina discussed the similarities between minerals

  16. Phenolic compounds and antioxidant activity of hydroalcoholic extracts of wild and cultivated murtilla (Ugni molinae Turcz.

    Directory of Open Access Journals (Sweden)

    Thalita Riquelme Augusto

    2014-12-01

    Full Text Available Over the last decade a considerable increase in the number of studies addressing the use of antioxidants from natural sources has led to the identification and understanding of the potential mechanisms of biologically active components. This results from the fact that they can be used to replace synthetic antioxidants commonly used in food. Murtilla (Ugni molinae Turcz is a native berry grown in Chile, and in the present study, the phenolic composition and antioxidant activity of its fruits were studied. Hydroalcoholic extracts of dehydrated fruits from two genotypes of murtilla (Ugni molinae Turcz. were produced. Extracts of wild murtilla and 14-4 genotype fruits had 19.35 and 40.28mg GAE/g for Total Phenolic Compounds, 76.48, and 134.35μmol TEAC/g for DPPH, and 157.04 and 293.99 μmol TEAC/g for ABTS, respectively. Components such as quercetin, epicatechin, and gallic, benzoic and hydrocaffeic acids were identified by CG/MS analysis. All of them showed antioxidant activity. Therefore, it is possible to say that the hydroalcoholic extracts of murtilla have antioxidant potential to be used in lipidic food.

  17. How Race Is Made in America: Immigration, Citizenship, and the Historical Power of Racial Scripts by Natalia Molina

    OpenAIRE

    Guevara-Velez, Lucy

    2015-01-01

    Natalia Molina presents a critical analysis of the period 1924-1965 in U.S. immigration policy and provides an opportunity for readers to examine the racialization of Mexicans in the United States and its impact on immigration legislation and naturalization.

  18. Insecticidal Activity of Peumus boldus Molina Essential Oil against Sitophilus zeamais Motschulsky Actividad Insecticida del Aceite Esencial de Peumus boldus Molina sobre Sitophilus zeamais Motschulsky

    Directory of Open Access Journals (Sweden)

    Jessica Betancur R

    2010-09-01

    Full Text Available In stored grains, the main agents diminishing production are insects, which can produce losses between 20% and 80% before harvest or under storage. The insecticidal properties of the essential oil of fresh leaves of Peumus boldus Molina against maize weevil (Sitophilus zeamais Motschulsky adults were determined under laboratory conditions. The highest mortality (100% was achieved at 4% concentration by contact with a treated glass surface. The same concentration in impregnated corn (Zea mays L. grain, resulted in 98.7% mortality. Mortality by fumigant action at 6 h was 100% with 35 µL oil in 0.15 L (air volume. Concentrations 1, 2 and 4% of essential oil produced 0% F1 adult emergence. At 10 d of residual effect, the 4% concentration reached 63.7% mortality. All treatments were repellent to adults of S. zeamais and corn grain germination was not affected by any treatment.Los principales agentes que disminuyen la producción en los granos almacenados son los insectos, antes de la cosecha y en el almacenamiento pueden causar pérdidas de 20 a 80%. Se evaluaron las propiedades insecticidas del aceite esencial de hojas frescas de Peumus boldus Molina para el control de adultos de gorgojo del maíz (Sitophilus zeamais Motschulsky en laboratorio. La mayor mortalidad (100% por contacto con una superficie de vidrio tratada se obtuvo con la concentración de 4%. Esta misma concentración produjo 98,7% de mortalidad en exposición a grano de maíz (Zea mays L. tratado. El efecto fumigante a las 6 h de exposición fue 100% con 35 µL de aceite en 0,15 L (volumen de aire. Con las concentraciones de 1, 2 y 4% de aceite esencial, el porcentaje de emergencia de la F1 fue 0%. A los 10 d de efecto residual se alcanzó 63,7% de mortalidad con la concentración de 4%. Todos los tratamientos fueron repelentes para adultos de S. zeamais y ningún tratamiento afectó la germinación de los granos.

  19. Toxicity of Boldo Peumus boldus Molina for Sitophilus zeamais Motschulsky and Tribolium castaneum Herbst Toxicidad del Boldo, Peumus boldus Molina, sobre Sitophilus zeamais Motschulsky y Tribolium castaneum Herbst

    Directory of Open Access Journals (Sweden)

    Margarita Ortiz U

    2012-09-01

    Full Text Available The maize weevil (Sitophilus zeamais Motschulsky and the red flour beetle (Tribolium castaneum Herbst are two key pests of stored-grain products worldwide. The insecticidal activity of boldo (Peumus boldus Molina powder, liquid ethanolic and hexanic extracts against S. zeamais and T. castaneum were evaluated under laboratory conditions. The evaluated variables were mortality, emergence of adult insects (F1, and grain weight loss. The experimental design was completely randomized. The mortality in S. zeamais was 100% even at the lowest powder concentration (0.5% w/w, whereas emergence of F1 adult insects was 0% and grain weight loss was El gorgojo del maíz (Sitophilus zeamais Motschulsky y el gorgojo castaño de la harina (Tribolium castaneum Herbst son plagas primarias de productos almacenados a nivel mundial. Se evaluó en laboratorio la actividad insecticida de polvo y extractos líquidos etanólicos y hexánicos del boldo (Peumus boldus Molina sobre S. zeamais y T. castaneum. Las variables evaluadas fueron mortalidad y emergencia de insectos adultos (F1 y pérdida de peso de los granos con un diseño experimental completamente al azar. La mortalidad en S. zeamais fue 100%, incluso con la concentración menor (0,5% p/p mientras que la emergencia de insectos adultos y la pérdida de peso de granos de maíz fue < 0,08%. Para T. castaneum sólo las concentraciones de 8 y 16% p/p de polvo causaron una mortalidad de 100%. Los extractos en agua, etanol, y hexano tuvieron un efecto insecticida de 100% en S. zeamais, mientras que en T. castaneum sólo el extracto en etanol alcanzó este valor. Por lo tanto, el polvo y los extractos evaluados de P. boldus presentan actividad insecticida contra S. zeamais y T. castaneum y son promisorios para utilizarse contra éstas y otras plagas de granos almacenados.

  20. Relaciones competitivas entre Proechimys Semispinosus y Hoplomys Gymnurus (Rodentia: Echimyidae) en el occidente colombiano

    OpenAIRE

    Alberico Michael; González M. Alonso

    1993-01-01

    Comparative data about movements, density, home range, and reproductive activity of Proechimys semispinosus and Hoplomys gymnurus (Rodentia: Echimyidae) were obtained by means of an eight-month capture-recapture study in the Bajo Calima region of the pacific coast of Colombia. In addition, intra and interespecific behavioral interactions were studied in captivity. Hoplomys gymnurus had a higher density than Proechimys semispinosus in the primary forest habitat, while the reverse situation was...

  1. On subspecific taxonomy of Microtus savii (Rodentia, Arvicolidae

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    Longino Contoli

    2003-10-01

    Full Text Available Riassunto Sulla tassonomia sottospecifica di Microtus savii (Rodentia, Arvicolidae Viene riveduta e riassunta la situazione tassonomica sottospecifica di Microtus (Terricola savii, anche tramite la descrizione di due nuovi taxa: Microtus (Terricola savii tolfetanus, dei Monti della Tolfa e Microtus (Terricola savii niethammericus, del Gargano.

  2. Mammary number and litter size in Rodentia: The “one-half rule”

    OpenAIRE

    Gilbert, Avery Nelson

    1986-01-01

    Litter size and mammary number in the mammalian order Rodentia show a significant positive correlation. Mean litter size is typically one-half the number of available mammaries, while maximum litter size approximates mammary number. Similar relationships are found in the families Muridae, Cricetidae, and Sciuridae. The relationship of litter size to mammary number is significantly different between the arboreal and terrestrial squirrels, and between the hystricomorph and nonhystricomorph rode...

  3. Karyotypes of Nannospalax (Palmer 1903) populations (Rodentia: Spalacidae) from centraleastern Anatolia, Turkey

    OpenAIRE

    Yüksel Coskun; Servet Ulutürk; Alaettin Kaya

    2010-01-01

    Riassunto
    Cariotipi di Nannospalax (Palmer 1903) (Rodentia, Spalacidae) dell’Anatolia centro-orientale, Turchia
    Sono stati analizzati i cariotipi di 20 (11 maschi e 9 femmine) Nannospalax catturati, nel periodo 2006-2009, in 11 località dell’Anatolia centro-orientale (Turchia). Sono state individuate sei diverse forme cromosomiche (2n=49; 2...

  4. Description of the karyotype of Rhagomys rufescens Thomas, 1886 (Rodentia, Sigmodontinae) from Southern Brazil Atlantic forest

    OpenAIRE

    André Filipe Testoni; Sérgio Luiz Althoff; André Paulo Nascimento; Francisco Steiner-Souza; Ives José Sbalqueiro

    2010-01-01

    Rhagomys rufescens (Rodentia: Sigmodontinae) is an endemic species of the Atlantic forest from Southern and Southeastern Brazil. Some authors consider Rhagomys as part of the tribe Thomasomyini; but its phylogenetic relationships remain unclear. Chromosomal studies on eight specimens of Rhagomys rufescens revealed a diploid number of 2n = 36 and a number of autosome arms FN = 50. GTG, CBG and Ag-NOR banding and CMA3 /DAPI staining were performed on metaphase chromosomes. Eight biarmed and nin...

  5. Los realismos en Beatus Ille de Antonio Muñoz Molina.

    Directory of Open Access Journals (Sweden)

    Papa Mamour Diop

    2007-07-01

    Full Text Available ENGLISH: This work deals with the current debate about reality and its literary and artistic expression: realism. In Beatus Ille, Antonio Muñoz Molina’s first novel, the fictional universe reveals three kinds of realism: the epic and elegiac realism, the historic realismand the magic realism. SPANISH: En este trabajo, abordamos el actual debate sobre la realidad y su expresión literaria y artística: el realismo. En Beatus Ille, primera novela de Antonio Muñoz Molina, eluniverso novelesco permite percibir tres tipos de realismos: el realismo épico elegiaco, el realismo histórico o contrafactual y el realismo mágico.

  6. Column gamma-ray scanning of the 'Hector Molina' Distillery

    International Nuclear Information System (INIS)

    Gamma-ray scanning, often referred to as 'column scanning', is a convenient, cost effective, fast, efficient and non-invasive technique to examine internal characteristics of a certain equipment, like alcohol distillation columns, while it is in operation. Column scanning allows to engineers, to study hydraulics tray inside of distillation column in on-line condition. It provides essential data to optimize the performance of columns, extend column run times, to evaluate effects of defective track and to identify maintenance requirements. This knowledge can reduce repair times significantly. In the year 2014, the Environmental Radiological Surveillance Laboratory from Center of Radiation Protection and Hygiene, introduced this service in the 'Hector Molina' Distillery. The diagnosis carried out allowed the detection of some anomalies in its operation. In this work the results obtained during gamma-ray scanning of the column are shown. (Author)

  7. Pollen germination capacity and viability in lagenaria siceraria (molina) standley (cucurbitaceae)

    International Nuclear Information System (INIS)

    Present investigation of pollen germination and viability pertain to a monoecious species Lagenaria siceraria (Molina) Standley belonging to Cucurbitaceae. The pollen germination was examined up to 48 weeks in different concentrations of sucrose and boric acid solutions using 'hanging drop technique'. Viability under storage was determined by storing pollen in different humidity conditions in a refrigerator (4 deg. C), freezer (-20 deg. C. -30 deg. C), freeze drier (-60 deg. C). The pollen were also treated in vacuum and in organic solvents. Pollen stored at low temperature showed better percentage of germination compared to pollen stored at 4 deg. C and fresh. Freeze dried pollen (- 60 deg. C) showed the highest percentage of germination. (author)

  8. Diversity in bottle gourd (Lagenaria siceraria - (Molina Standl. Germplasm from peninsular india

    Directory of Open Access Journals (Sweden)

    Sunil N*, Thirupathi Reddy M, Hameedunnisa B, Vinod Someswara Rao P, Sivaraj N, Kamala V, Prasad R B N, Rao B VS K, Chakrabarty S K

    2014-06-01

    Full Text Available A set of 20 diverse accessions of bottle gourd (Lagenaria siceraria (Molina Standl., exhibited wide range of variability for qualitative and quantitative traits. The seed oil content ranged from 18.6 % (IC446598 to 28.0 % (IC446592. The fatty acid composition of bottle gourd seed oil also varied. Days to 50% flowering and peduncle length had significant positive correlation with seed oil content, whereas inter nodal length had significant negative correlation. The intermodal length and number of primary branches per plant had high positive direct effect on fruit yield per plant. Based on the traits, the accessions clustered into three distinct clusters. The diversity may be exploited for crop improvement and the potential of bottle gourd as edible oil source further explored.

  9. Isolation and Characterization of Phenolic Compounds and Anthocyanins from Murta (Ugni molinae Turcz.) Fruits. Assessment of Antioxidant and Antibacterial Activity

    OpenAIRE

    Junqueira-Gonçalves, Maria; Yáñez, Lina; Morales, Carolina; Navarro, Muriel; Contreras, Rodrigo A.; Zúñiga, Gustavo

    2015-01-01

    Berry fruit consumption has become important in the promotion of human health, mainly due to their phenolic compounds, which have been associated with protection against different pathologies, as well as antimicrobial and other biological activities. Consequently, there has been a growing interest in identifying natural antioxidants and antimicrobials from these plants. This study aimed to characterize the phenolic chemical composition and anthocyanin profile of murta (Ugni molinae Turcz.) fr...

  10. Record of vicunas (Vicugna vicugna Molina 1782 as host of Amblyomma parvitarsum Neumann 1901 (Acari: Ixodidae in Bolivia

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    Beltrán-Saavedra L. Fabián

    2011-08-01

    Full Text Available Adult stage Ixodidae mites were collected from wild vicuna (Vicugna vicugna Molina 1782, captured at three locations from the Área Natural de Manejo Integrado Nacional Apolobamba, in the Department of La Paz, Bolivia. The collected ticks corresponded to the species Amblyomma parvitarsum (Neumann 1901. This paper constitutes the second report of A. parvitarsum in Bolivia and the first confirmed report for vicuna as definitive hosts in the Andean region of this country.

  11. Feeding ecology of the Green-cheeked parakeet (Pyrrhura molinae in dry forests in western Brazil Ecologia alimentar da Tiriba-de-cara-suja (Pyrrhura molinae em matas secas do oeste brasileiro

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    J. Ragusa-Netto

    2007-05-01

    Full Text Available The genus Pyrrhura includes small to medium-sized parakeets, which inhabit both low and dry alongside tall rainforests, mainly in South America. Pyrrhura molinae is still common, year round, in the markedly seasonal forests of western Brazil. This parakeet, as well as most Neotropical parrots, continues to be poorly understood. Hence, in the present study I examined their foraging ecology both in a highly deciduous and in a semi-deciduous forest in western Brazil. In addition, I assessed the relationship between food resource production (flowers and fruits, and the diet of this parakeet. Pyrrhura molinae exhibited a flexible diet consisting of 16 tree species, from which it consumed flowers (three species, seeds (three species, fruit pulp or aril (four species, and both pulp and seeds (six species. Parakeets consumed a wide array of fleshy fruits in the semi-deciduous forest, especially Cecropia pachystachya catkins. Conversely, in the highly deciduous forest they extensively foraged for figs (70% of the diet, in addition to nectar and seeds from dry fruits. Ficus calyptroceras, besides being abundant, bore fruits year round, and was substantially used by parakeets every month. Potentially, by exploiting a diverse set of plant food resources, and particularly due to the substantial use of figs, asynchronously produced, Pyrrhura molinae persists during the long dry season in the markedly seasonal forests of western Brazil.O gênero Pyrrhura é constituido de pequenos periquitos comuns tanto em matas secas quanto úmidas, sobretudo da América do Sul. Pyrrhura molinae ocorre durante o ano todo em florestas altamente sazonais do oeste brasileiro. Essa espécie, bem como a maioria dos psitacídeo, permanece pouco conhecida. Portanto, nesse estudo, foi examinada a ecologia alimentar de P. molinae em dois tipos de florestas secas (altamente decídua e semidecídua, do oeste brasileiro, bem como as relações entre a produção de flores frutos e a

  12. New species and records of mites of the superfamily Sarcoptoidea (Acariformes: Psoroptidia) from mammals in Brazil.

    Science.gov (United States)

    Bochkov, Andre V; Valim, Michel P

    2016-01-01

    Sixteen species of the superfamily Sarcoptoidea (Acariformes: Psoroptidia) belonging to 10 genera of the families Atopomelidae, Listrophoridae, Chirodiscidae, and Listropsoralgidae are recorded in Brazil. Among them, three species, Prolistrophorus hylaeamys sp. nov. from Hylaeamys laticeps (Lund, 1840) (Cricetidae: Sigmodontinae) from Minas Gerais, Lynxacarus serrafreirei sp. nov. from Galictis cuja (Molina, 1782) (Carnivora: Mustelidae) from Rio de Janeiro (Listrophoridae), and Didelphoecius micoureus sp. nov. (Atopomelidae) from Micoureus paraguayanus (Tate, 1931) (Didelphimorphia: Didelphidae) from Minas Gerais are described as new for science. Three species of the family Listrophoridae, Prolistrophorus bidentatus Fain et Lukoschus, 1984 from Akodon cursor (Winge, 1887) (Rodentia: Cricetidae) (new host), Prolistrophorus ctenomys Fain, 1970 from Ctenomys torquatus Lichtenstein, 1830 (Rodentia: Ctenomyidae) (new host), and Leporacarus sylvilagi Fain, Whitaker et Lukoschus, 1981 from Sylvilagus brasiliensis (Linnaeus, 1758) (Lagomorpha: Leporidae) (new host) -from Minas Gerais and Rio Grande do Sul, and one species of the family Chirodiscidae, Parakosa tadarida McDaniel and Lawrence, 1962 from Molossus molossus (Pallas, 1766) (Chiroptera: Molossidae) are recorded for the first time in Brazil. The previously unknown female of Didelphoecius validus Fain, Zanatta-Coutinho et Fonseca, 1996 (Atopomelidae) from Metachirus nudicaudatus (Geoffroy, 1803) (Didelphimorphia: Didelphidae) from Minas Gerais is described. All data on host-parasite associations of sarcoptoids in Brazil are summarized. Totally, 61 sarcoptoid species of 8 families are recorded in Brazil. PMID:26751869

  13. Projecto Rodentia : etologia aplicada na sala de aula do 1º Ciclo

    OpenAIRE

    Franco, N. H.; Olosson, A.; J.B. Santos; Brosseron, F.; Pinto, A.; Ricardo, E.

    2008-01-01

    p. 275-279 O Projecto Rodentia, implementado no ano 2006/2007, visa promover a cultura científica em alunos do 1º ciclo do Ensino Básico, familiarizando-os com o Método Científico e desenvolvendo competências conceptuais, processuais e atitudinais, com base na Etologia Aplicada e na reflexão ética sobre o bem-estar animal. Foram instalados em três salas de aula habitats especialmente desenhados, contendo cada um dois ratos de laboratório. Inicialmente orien...

  14. Quillajasides A and B: New Phenylpropanoid Sucrose Esters from the Inner Bark of Quillaja saponaria Molina.

    Science.gov (United States)

    Maier, Christiane; Conrad, Jürgen; Steingass, Christof B; Beifuss, Uwe; Carle, Reinhold; Schweiggert, Ralf M

    2015-10-14

    The phenolic composition of freshly prepared aqueous extracts of the inner bark of Quillaja saponaria Molina was compared to that of commercially available Quillaja extracts, which are currently used as emulsifiers in foods and cosmetics. Major phenolics in both extracts were (+)-piscidic acid and several p-coumaroyl sucrose esters. Among the latter, two new compounds were isolated and characterized: α-l-rhap-(1→4)-α-l-rhap-(1→3)-(4-O-(E)-p-coumaroyl)-α-d-glup-(1→2)-(3-O-(E)-p-coumaroyl)-β-d-fruf (quillajaside A) and β-d-apif-(1→4)-α-l-rhap-(1→4)-α-l-rhap-(1→3)-(4-O-(E)-p-coumaroyl)-α-d-glup-(1→2)-(3-O-(E)-p-coumaroyl)-β-d-fruf (quillajaside B). In addition, a putative biosynthetic pathway of at least 20 structurally related p-coumaroyl sucrose esters was tentatively identified. Besides their antioxidant activity and their potential function as substrate for enzymatic browning reactions, the new compounds are highly characteristic for both the inner bark of Q. saponaria and commercial extracts derived therefrom. Consequently, they might serve as authenticity markers for the detection of Quillaja extracts in food and cosmetic formulations. PMID:26375986

  15. Microencapsulation of maqui (Aristotelia chilensis Molina Stuntz leaf extracts to preserve and control antioxidant properties

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    Leslie Vidal J

    2013-03-01

    Full Text Available Microencapsulation technology is an alternative to stabilize stress factors and protect food ingredients or additives, which include environmentally sensitive bioactive principles in protective matrices to increase their functionality and life span. The objective of this research was to study conditions to obtain microcapsules with antioxidant capacity from a maqui (Aristotelia chilensis [Molina] Stuntz, Elaeocarpaceae leaf extract by emulsification and subsequent retention after microencapsulation. Microcapsules were produced by water-in-oil emulsion (W/O using a phase of the aqueous maqui leaf extract and gum arabic, and a liquid vaseline phase. Maqui leaf extract antioxidant capacity was 99.66% compared with the aqueous phase of the emulsion at 94.38 and 93.06% for 5% and 15% gum arabic, respectively. The mean yield of maqui leaf extract microencapsulation with 5% gum arabic varied between 38 and 48%, whereas with 15% gum arabic it was 39%. Once the antioxidant microcapsules were formed, mean extract antioxidant capacity ranged between 30 and 35%. Both yields responded similarly to changes in gum arabic concentrations (5% and 15% in the aqueous phase of the emulsion; 5% concentration produced a microcapsule size from 1.0 to 10 urn. Maqui leaf extracts with high phenolic compound levels, which can be stabilized and protected by the microencapsulation process, produce new natural preservative systems as compared with their synthetic counterparts.

  16. Human erythrocytes are affected in vitro by extracts of Ugni molinae leaves.

    Science.gov (United States)

    Suwalsky, M; Orellana, P; Avello, M; Villena, F; Sotomayor, C P

    2006-08-01

    Ugni molinae Turcz, also known as "Murtilla", is a plant that grows in the south of Chile. Infusions of their leaves have long been used in traditional native herbal medicine. The chemical composition of the leaves indicates the presence of polyphenols, which have antioxidant properties. In order to evaluate the mechanisms of their antioxidant properties and the toxicity of the aqueous extracts of leaves, the extracts were induced to interact with human red cells, their isolated unsealed membranes (IUM) and large unilamellar vesicles (LUV) of dimyristoylphosphatidyltidylcholine (DMPC), representative of phospholipid classes located in the outer monolayer of the erythrocyte membrane. Scanning electron microscopy (SEM) observations indicated that the extracts achieved a significant alteration in the shape of the erythrocytes as they changed their discoid shape to echinocytes. According to the bilayer couple hypothesis, the shape change indicates that the polyphenols were located in the outer moiety of the red cell membrane. This conclusion was confirmed by the fluorescence experiments performed in IUM and DMPC LUV. In fact, the extracts produced slight initial increases followed by sharp decreases at higher concentrations in the anisotropy and general polarization parameters. These results imply that the extracts induced structural perturbations in the acyl chain and polar group packing arrangements of the erythrocyte IUM and DMPC LUV lipid bilayers: first ordering and afterwards disordering them as the extract concentration increased. PMID:16716480

  17. Arbuscular mycorrhizal infection in two morphological root types of Araucaria araucana (Molina) K. Koch.

    Science.gov (United States)

    Diehl, P; Fontenla, S B

    2010-01-01

    Araucaria araucana (Molina) K. Koch is a conifer distributed in the Andean-Patagonian forests in the south of Argentina and Chile. The main objective of this work was to relate the different root classes appearing in A. araucana to mycorrhizal behavior. Samples were collected in three different sites in the Lanín National Park (NW Patagonia, Argentina). Two different root classes were present in A. araucana: longitudinal fine roots (LFR) and globular short roots (GSR). Both had extensive mycorrhizal arbuscular symbiosis (AM) and presented abundant hyphae and coils in root cells, a characteristic of the anatomical Paris-type. Dark septate fungal endophytes were also observed. Values of total AM colonization were high, with similar partial AM% values for each root class. Seasonal differences were found for total and partial colonization, with higher values in spring compared to autumn. Regarding the percentage of fungal structures between root classes, values were similar for vesicles and arbuscules, but higher coil percentages were observed in GSR compared to LFR. The percentages of vesicles increased in autumn, whereas the arbuscule percentages increased in spring, coinciding with the plant growth peak. Results show that both root classes of A. araucana in Andean-Patagonian forests are associated with AM fungi, which may have ecological relevance in terms of the importance of this symbiosis, in response to soil nutrient-deficiencies, especially high P-retention. PMID:20589337

  18. Insecticidal activity of powder and essential oil of Cryptocarya alba (Molina Looser against Sitophilus zeamais Motschulsky

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    Juan J Pinto

    2016-03-01

    Full Text Available Cereals constitute a relevant part of human and domestic animal diet. Under storage conditions, one of the most significant problems of these crops is insect pests as the maize weevil (Sitophilus zeamais Motschulsky. This insect species is usually controlled by means of synthetic insecticides but problems as toxic residues and resistance has led to the search for more friendly control alternatives such as botanical insecticides. The aim of this research was to evaluate, under laboratory conditions, the insecticidal properties of the powder and the essential oil of peumo (Cryptocarya alba [Molina] Looser; Lauraceae leaves against S. zeamais. The variables assessed were toxicity by contact and fumigant activity, adult emergence (F1, repellent effect, and impact on wheat (Triticum aestivum L. seed germination. A completely randomized design was used with five treatments and 10 replicates. The higher mortality levels were obtained at 80 g powder kg-1 grain and 40 mL essential oil kg-1 grain of C. alba; in both cases, the mortality of adult S. zeamais surpassed 80%. The emergence of adults S. zeamais (F1 was reduced by 100% at 80 g powder kg-1 grain and 40 mL essential oil kg-1 grain. Germination of wheat seeds treated with C. alba powder and essential oil was not affected. Both, the powder and the oil treatments showed repellent effect, but not fumigant activity.

  19. Memorial and biographical history of Spain: El jinete polaco by Antonio Muñoz Molina

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    Felipe Oliver Fuentes Kraffczyk

    2012-12-01

    Full Text Available The novel El jinete polaco by Antonio Muñoz Molina is a highly complex work in which the narrator mixes multiple plotlines in an effort to recreate or remember part of his family past. In the process, the collective memory of the town and people of Mágina (an allegoric space that represents the peasant life of the olive growers of southern Spain appears as a rich and contradictory montage of dreams and failures. And in a third level of discourse, the recent past of Spain also emerges through the main historic al events: the civil war, the protracted military government, and the economic development and current consolidation of democracy. In order to achieve this complex and ambitious narrative project, in El jinete polaco time is not represented as uninterrupted historical timeline but as the rich mixture of the simultaneous experiences of different life courses in terms of both values and cultural patterns in order to understand how the rapid social change affects relations between the various age groups. In other words, time is constructed as a synthesis of the biographical dimension within collective memory and major historical events. This paper seeks to point out the similarities and differences between biographical discourse, collective memory and history.

  20. Inheritance of warty fruit texture and fruit color in bottle gourd [Lagenaria siceraria (Molina Standl.

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    Mladenović Emina

    2013-01-01

    Full Text Available Bottle gourd [Lagenaria siceraria (Molina Standl.] is one of the most interesting species in the plant kingdom, due to the diversity of fruit shapes, sizes and ways of use. Warty genotypes are rare compared to non warty genotypes. Considering unusual external appearance of warty fruits, we focused our research on the investigation of its inheritance patterns. By crossing different bottle gourd phenotypes, we studied the mode of inheritance and identified and verified genes responsible for the fruit skin color and warty phenotype segregation. Two parental lines, LAG 70 (with warty fruit of light green color and LAG 71 (smooth fruit, variegated, F1, F2 and backcrosses populations along with both parents were evaluated. Genetic analysis indicated that warty fruit type is a result of monogenic inheritance, whereby the warty fruit type is dominant (Wt trait over to the non-warty fruit type (wt. The mode of inheritance of fruit color was controlled by recessive epistasis, with a ratio of 9 variegated (A-, B-, 3 dark green colored (aaB- and 4 light green colored (aabb fruits in the F2 generation.

  1. El abate Juan Ignacio Molina: una vida dedicada a la historia natural y civil del reino de Chile Abbot Juan Ignacio Molina: A life devoted to the natural and civil history of Chile

    OpenAIRE

    Reynaldo Charrier; Francisco Herv

    2011-01-01

    Juan Ignacio Molina (1740-1829) naci cerca de Talca, Chile, y falleci en Bolonia, Italia. Es el primer cientfico chileno. Desde pequeo se interes por la naturaleza. Se educ con la Compaa de Jess en diversos lugares de Chile central, lo que le permiti conocer su geografa, fauna, flora y poblacin. Con 15 aos ingres a la Compaa. En 1767, abandon el pas al ser expulsada esta orden de espaa y sus dominios. Se radic en los Estados Pontificios, donde se orden de sacerdote y permaneci hasta su muerte...

  2. Character transformations and their functional significance as a key to the evolution of hystricognath Rodentia

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    Andrea Mess

    2011-12-01

    Full Text Available Hystricognathi represent a monophyletic taxon within Rodentia. Since phylogenetically analyzed morphological systems are essential for revealing evolutionary processes, this study identifies evolutionary character transformations on the stem lineage of Hystricognathi as derived from the author's own work and the literature. Data so far indicate that evolutionary transformations in the rostral head region, the loss of tactile ability in the outer nasal skin and the mobile arrangement of the associated cartilage, were allied with a switch from omnivorous to herbivorous and fiber-rich nutrition. Additional character transformations in the skull assist in digesting such food. Structures associated with reproduction and placentation show a remarkable pro portion of derived character conditions: the chorioallantoic placenta has a ring-shaped organization and growth structure which optimizes the capacity for passive diffusion, a subplacenta occurred as a specialized region responsible for placental invasion and the inverted yolk sac facilitates substance exchange with the main placenta. Finally, precocial newborns evolved as a derived condition within Rodentia. All things considered, a mode of reproduction is indicated, which does not demand excessive additional energy intake by the mother and is in accordance with her low energetic diet. Hystricognathi possess major character transformations that represent prerequisites for their successful radiation at the time when more open ecosystems and grasslands evolved during Earth history. The analysis resulted in the reconstruction of a life-near picture of the hystricognath stem species pattern with high explanatory power in terms of changes in space and time and their interdependence with biodiversity.

  3. Institución Educativa Técnico Industrial Pedro Antonio Molina: eje de desarrollo y bienestar para la comunidad

    OpenAIRE

    DANIEL ALBERTO ÁLVAREZ WATSON; HENRY ORLANDO BOLAÑOS BURBANO; FRANCISCO ORLANDO VELÁSQUEZ VÁSQUEZ

    2012-01-01

    El caso analiza la situación particular de la Institución educativa Técnico Industrial Pedro Antonio Molina, el liderazgo del rector y el apoyo del sector privado en los procesos de gestión de la calidad. Esto motiva a los integrantes de la institución a trabajar en equipo para lograr la certificación de calidad, mejorando sus resultados académicos año tras año, destacándose a nivel regional y nacional, y generando cambios sociales en su entorno. Metodológicamente, se identificó una instituci...

  4. Narrativa de indios en las Historias naturales de Juan Ignacio Molina y Felipe Gómez de Vidaurre

    OpenAIRE

    Hachim Lara, Luis

    2013-01-01

    Los naturalistas europeos abordaron a los aborígenes de América, recurriendo a las narraciones que el archivo occidental poseía y que estaba a disposición de la racionalidad ilustrada en perspectiva de la administración colonial. A su vez, los criollos letrados, confrontan su episteme –a veces diferenciada– con esas narrativas occidentalistas. Así, los jesuitas chilenos Juan Ignacio Molina y Felipe Gómez de Vidaurre en sus Historias naturales, investigarán las costumbres civiles del indígena ...

  5. El camino de la biotecnología en la Universidad Nacional Agraria La Molina, Perú

    OpenAIRE

    Marcel Gutiérrez-Correa

    2013-01-01

    Se realiza un relato histórico sobre los cincuenta años que tiene la carrera de biología en la Universidad Na-cional Agraria La Molina y la gestación, inicio, desarrollo y maduración de la biotecnología en esta universidad. Se describen algunos pormenores de las tres grandes estructuraciones curriculares que finalmente derivan al establecimiento del área de biotecnología en el pregrado y en el doctorado así como a los logros alcanzados. El desarrollo de la biotecnología en la UNALM ha infl...

  6. Síntesis biográfica de Martina Guevara Molina

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    María del Carmen Amaro Cano

    2002-08-01

    Full Text Available Se realizó una limitada búsqueda bibliográfica, consultando fuentes secundarias existentes en la Biblioteca del Museo de las Ciencias "Carlos J. Finlay", concernientes a la fundación de la primera Secretaria de Sanidad cubana, y del mundo y a la creación de la Escuela de Enfermeras del Hospital "Nuestra Señora de las Mercedes". Fueron revisados también informes de la Asociación Nacional de Enfermeras de Cuba, fundada en 1909, así como biografías y escritos de la época acerca del hospital Nuestra Señora de las Mercedes y su Escuela de Enfermeras. El objetivo de esta búsqueda bibliográfica era poder ofrecer a las enfermeras y estudiantes actuales de Enfermería, una información básica mínima acerca de una de las primeras graduadas Martina Guevara Molina de la primera Escuela de Enfermeras de Cuba en 1902, quien se distinguió por su identidad profesional, expresada en su activa participación en la constitución de la Asociación Nacional de Enfermeras de Cuba, y por haber sido la primera enfermera cubana que recibió formación teórico-práctica como docente de enfermería. Su vida y obra debería ser estudiada con rigor, a partir de un protocolo de investigación histórica que permita acercarce a una personalidad tan importante de la profesión, como medio para estimular el reforzamiento de la vocación y la identidad profesional de las actuales y futuras profesionales de la enfermería cubana.A limited bibliographic review was made by consulting secondary sources in the Library of "Carlos J. Finlay" Sciences Museum about the foundation of the first Health Secretariat in Cuba and in the world and about the establishment of the Nursing School of "Nuestra Señora de las Mercedes" Hospital. Reports from the National Nursing Association of Cuba, founded in 1909, as well as biographies and writings from that time about this hospital and its Nursing School were also reviewed. The objective of this bilbliographic search was to give

  7. Effect of boldo (Peumus boldus Molina) infusion on lipoperoxidation induced by cisplatin in mice liver.

    Science.gov (United States)

    Fernández, J; Lagos, P; Rivera, P; Zamorano-Ponce, E

    2009-07-01

    Peumus boldus Molina (Monimiaceae), commonly referred to as 'boldo', is used in traditional Chilean medicine to treat hepatic and gastrointestinal diseases. Its leaves are rich in antioxidant compounds, principally alkaloids and flavonoids. This study evaluates the protective effect of a complete boldo leaf infusion on lipoperoxidation (MDA determination at 532 nm) induced by cisplatin in mice liver. To determine if the observed effect can be explained by the action of boldine or catechin, each compound was studied separately. The mice were divided into 8 groups (n = 6): (I) not treated; (II) treated with cisplatin 6 mg/Kg b.w.; (III) treated with boldo leaf infusion 5%; (IV) pretreated with boldo leaf infusion 5% and treated with cisplatin 6 mg/Kg b.w.; (V) treated with boldine 50 mg/Kg b.w.; (VI) pretreated with boldine 50 mg/Kg b.w. and treated with cisplatin 6 mg/kg.b.w.; (VII) treated with catechin; and (VIII) pretreated with catechin 50 mg/Kg b.w. and treated with cisplatin 6 mg/Kg b.w. As expected, the treatment with cisplatin significantly increased (p < 0.01) lipoperoxidation in comparison with the non-treated group. Pretreatment with boldo leaf infusion significantly diminished (p < 0.05) the lipoperoxidation induced by cisplatin with respect to the animals not pretreated with the infusion. The pretreatments with boldine and catechin significantly diminished (p < 0.05) the lipoperoxidation induced by cisplatin with respect to the group treated only with cisplatin. The results suggest that the boldo infusion is acting as a protector with respect to the oxidative hepatic damage caused by cisplatin, and that this protective ability would be due to the presence in the infusion of the natural antioxidants boldine and principally catechin. These findings suggest the potential use of the infusion as a chemoprotector. PMID:19145575

  8. Lamotheoxyuris ackerti n. gen., n. comb. (Nematoda: Heteroxynematidae) parasite of Neotoma spp. (Rodentia: Muridae) Lamotheoxyuris ackerti n. gen., n. comb. (Nematoda: Heteroxynematidae) parásito de Neotoma spp. (Rodentia: Muridae)

    OpenAIRE

    JORGE FALCÓN-ORDAZ; Jesús A. Fernández; LUIS GARCÍA-PRIETO

    2010-01-01

    On the basis of the revision of the type material of Aspiculuris ackerti Kruidenier & Mehra, 1959, and new specimens collected from Neotoma nelsoni Goldman, 1905 (Rodentia: Cricetidae), in Veracruz, Mexico, we herein to which A. ackerti is transferred as Lamotheoxyuris ackerti This new genus differs from all other genera included in 1) mouth surrounded by six lips; 2) extension of lateral alae describe a new genus (Lamotheoxyuris n. gen.), (Kruidener & Mehra, 1959) n. gen., n. comb. Heteroxyn...

  9. Feeding habits of Molina's hog-nosed skunk, Conepatus chinga (Carnivora: Mephitidae in the extreme south of Brazil

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    Felipe Bortolotto Peters

    2011-04-01

    Full Text Available Feeding habits of the Molina's hog-nosed skunk, Conepatus chinga (Molina, 1782 in the extreme south of Brazil. We analyzed 60 stomachs of road-kills of C. chinga in the extreme south of Brazil. The contents revealed 808 prey parts, including invertebrates (frequency of occurrence - FO = 96.7% and relative abundance - RA = 94.7%, vertebrates (FO = 18.3% and RA = 2.8% and plants (FO = 31.7% and RA = 2.3%. We identified 18 kinds of food, including the invertebrate order Coleoptera which showed the highest FO (86.7% and RA (75.2%. Other important orders were Orthoptera (FO = 35% and RA = 10.4% and Araneae (FO = 41.7% and RA = 4%. The combination of occurrence and abundance of the preys consumed allowed classifying C. chinga as an omnivorous with a predominance of insects, especially Coleoptera, consuming other invertebrates, vertebrates and plants in smaller numbers. Behavioral and morphological adaptations of C. chinga favor the predation of insects, which are preys that offer low physical resistance and are available in all terrestrial environments.

  10. Lope de Vega Carpio, Tirso de Molina, Miguel de Cervantes, Il teatro dei Secoli d’oro, coord. M.G. Profeti

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    Marcella Trambaioli

    2016-01-01

    Reseña de Lope de Vega Carpio, Tirso de Molina, Miguel de Cervantes, Il teatro dei Secoli d’oro, coord. M.G. Profeti, Bompiani (Classici della Letteratura europea), Milán, 2014, vol. I, 2436 pp. ISBN: 9788845277252.

  11. The complete mitochondrial genome of Meriones meridianus (Rodentia: Cricetidae) and its phylogenetic analysis.

    Science.gov (United States)

    Luo, Guangjie; Liao, Jicheng

    2016-07-01

    Meriones meridianus belongs to the genus Meriones in Gerbillinae. Total length of complete mitochondrial genome of M. meridianus is 16,376 bp and the heavy strand contains 32.8% A, 13.1% G, 25.3% C and 28.8% T. Sequences of protein-coding genes are 11,341 bp in length, accounting for 69.25%, approximately. Results of phylogenetic analysis shown that M. meridianus and Meriones unguiculatus were clustered in a single branch. This conclusion would be an important data for relevant studies about the genus Meriones, and mitochondrial genome would be an important supplement for the gene pool of Rodentia. It would play a pivotal role in researches about phylogeography and proteomics involving M. meridianus as well. PMID:26075483

  12. The complete mitochondrial genome of Meriones libycus (Rodentia: Cricetidae) and its phylogenetic analysis.

    Science.gov (United States)

    Luo, Guangjie; Liao, Jicheng

    2016-07-01

    Meriones libycus belongs to the genus Meriones in Gerbillinae, its complete mitochondrial genome is 16,341 bp in length. The heavy strand contains 32.8% A, 13.1% G, 25.3% C, 28.8% T, protein-coding genes approximately accounting for 69.54%. Results of phylogenetic analysis showed that M. libycus and Meriones unguiculatus were clustered together, and it was consistent with that of primary morphological taxonomy. This study verifies the evolutionary status of M. libycus in Meriones at the molecular level. The mitochondrial genome would be a significant supplement for the gene pool of Rodentia and the conclusion of phylogenetic analysis could be an important molecular evidence for the classification of Gerbillinae. PMID:26017047

  13. CHROMOSOMAL VARIABILITY IN TUCO-TUCOS (Ctenomys, RODENTIA) FROM THE ARGENTINEAN NORTHEASTERN WETLANDS

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    Diego A. Caraballo; Paola C. Jablonski; Pablo J. Rebagliati; María Susana Rossi

    2015-01-01

    Diversidad cromosómica en tuco-tucos (Ctenomys, Rodentia) de los humedales del noreste argentino. La diversidad cromosómica es clave para entender la evolución de las especies de mamíferos. Los roedores, el taxón más diversificado de los mamíferos, presentan una gran diversidad cromosómica; el estudio de sus cariomorfos ha contribuido mucho a la comprensión de su evolución. Los roedores subterráneos del género Ctenomys (tuco-tucos) son uno de los géneros de mamíferos con mayor número de espec...

  14. SMALL MAMMAL FAUNA (INSECTIVORA AND RODENTIA FROM THE FLOOD PLAIN OF TIMIŞ RIVER

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    I. DUMA

    2005-01-01

    Full Text Available Faunistical data regarding small mammal fauna from the south-western part of Romania are very poor and not to date. The only serious studies were made between 1966 and 1971 along the Danube River by the researchers: A. Popescu, Pr. Barbu, M. Hamar, M. Şutova. In our collection campaign we captured 6 species of Insectivora: Erinaceus concolor, Talpa europaea, Sorex araneus, Neomys fodiens, Neomys anomalus and Crocidura leucodon. Also we caught 9 species of rodents (Rodentia: Muscardinius avellanarius, Mus musculus, Mus spicilegus, Micromys minutus, Pitymis subterraneus, Apodemus flavicollis, Apodemus sylvaticus, Apodemus agrarius, and Microtus arvalis. Our study brings new faunistical data regarding distribution of some small species of mammals in this part of Romania. Also we confirm the presence of Apodemus agrarius kahmanni in the Banat.

  15. El abate Juan Ignacio Molina: una vida dedicada a la historia natural y civil del reino de Chile Abbot Juan Ignacio Molina: A life devoted to the natural and civil history of Chile

    Directory of Open Access Journals (Sweden)

    Reynaldo Charrier

    2011-09-01

    Full Text Available Juan Ignacio Molina (1740-1829 naci cerca de Talca, Chile, y falleci en Bolonia, Italia. Es el primer cientfico chileno. Desde pequeo se interes por la naturaleza. Se educ con la Compaa de Jess en diversos lugares de Chile central, lo que le permiti conocer su geografa, fauna, flora y poblacin. Con 15 aos ingres a la Compaa. En 1767, abandon el pas al ser expulsada esta orden de espaa y sus dominios. Se radic en los Estados Pontificios, donde se orden de sacerdote y permaneci hasta su muerte. All ense ciencias naturales y produjo su obra cientfica: Compendio de la historia geogrfica, natural y civil del reino de Chile de 1776, una versin aumentada, Ensayo sobre la historia natural de Chile de 1782 y una segunda en 1810. En ellas, abord aspectos climticos, botnicos, geolgicos, zoolgicos, mineralgicos y geogrficos del territorio. Describi el terremoto de Concepcin, las erupciones del Villarrica y Peteroa, e hizo referencia a recursos minerales. Diferenci cuatro unidades litoestratigrficas para Chile central. Clasific plantas y animales siguiendo los criterios de Linneo. En una de sus 14 memorias, Analogas menos observadas de los tres reinos de la Naturaleza, sin podrselo calificar de evolucionista, se destaca su intento de integracin entre los "seres" de los tres reinos, y en Sobre la propagacin del gnero humano en las diversas partes de la tierra, propuso tres vas diferentes para el poblamiento de Amrica. En 1802, ingres a la Academia de Ciencias de Bolonia.Juan Ignacio Molina (1740-1829, born next to Talca, Chile, and dead in Bologna, Italy, is the first Chilean scientist. His education in establishments of the Society of Jesus, in several localities of central Chile, allowed him to learn about its geography, flora, fauna, and population. At 15 years old he entered the Society. In 1767, he left Chile when the Jesuits were expelled from the spanish territories. In Bologna he produced his scientific contribution. Molina published in 1776 the first

  16. Chemical profile and antimicrobial activity of Boldo (Peumus boldus Molina extracts obtained by compressed carbon dioxide extraction

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    M. Mazutti

    2008-06-01

    Full Text Available This work reports the effects of temperature (20 to 50ºC and pressure (100 to 250 bar on the extraction yield, chemical characteristics and antimicrobial activity of extracts of Peumus boldus Molina obtained by compressed carbon dioxide extraction. Results showed that the extraction variables affect the extraction yield and the chemical distribution of the major compounds present in the extracts. The extracts were chemically analyzed with regard to 1,8-cineole, trans-sabinene, pinocarveol, pinocarvone, 4-terpineol, ascaridole, piperitone oxide, limonene dioxide and n-eicosane in a GC/MSD. Antimicrobial tests demonstrated that the high-pressure CO2 extracts had activity against 13 bacteria and that better action was verified with extracts obtained at a lower CO2 extraction density and a higher temperature.

  17. Angélica y el desencadenamiento de la locura: Lope de Rueda y Tirso de Molina

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    Hermenegildo, Alfredo

    2004-04-01

    Full Text Available La locura, como recurso dramático, aparece en dos obras separadas por unas cuantas décadas: la Mederà, de Lope de Rueda, y La villana de la Sagra, de Tirso de Molina. En la primera, la presencia destructora y conflictiva de unos hermanos gemelos desencadena la locura de unos individuos, los padres de la protagonista, que alteran con sus andanzas la convivencia social del grupo a que pertenecen. La fiesta carnavalesca está también en la base misma de la construcción de los locos. En la obra de Tirso, la locura del galán, de don Luis, es utilizada para detener, con su fondo libresco, el desarrollo previsible de la fábula.…

  18. Estudio de viabilidad de una instalación fotovoltaica en una vivienda unifamiliar situada en Molina de Segura, Murcia

    OpenAIRE

    López Palazón, Sergio

    2015-01-01

    El objetivo de este documento es el de estudiar la viabilidad técnico-económica de la integración de un sistema de producción de energía eléctrica mediante tecnología fotovoltaica en la localidad de Molina del Segura, provincia de Murcia, de modo que sirva de autoconsumo para una vivienda unifamiliar y/o la venta de la energía eléctrica sobrante por la instalación fotovoltaica conectada a red, a la compañía de distribución eléctrica correspondiente de la zona. Se realizará e...

  19. Topical anti-inflammatory activity of 2alpha-hydroxy pentacyclic triterpene acids from the leaves of Ugni molinae.

    Science.gov (United States)

    Aguirre, María C; Delporte, Carla; Backhouse, Nadine; Erazo, Silvia; Letelier, María Eugenia; Cassels, Bruce K; Silva, Ximena; Alegría, Sergio; Negrete, Rosa

    2006-08-15

    Leaf extracts of Ugni molinae Turcz. are used in the Chilean cosmetic industry on the assumption that they have decongestant, regenerative, and anti-aging properties. A bioassay-guided fractionation of this plant material showed that some extracts have potent anti-inflammatory activities. Further fractionation led to the isolation and identification of betulinic acid, a mixture of ursolic and oleanolic acids, and the 2alpha-hydroxy derivatives alphitolic, asiatic, and corosolic acids. The latter three were evaluated in vivo in the mouse ear assay for their topical anti-inflammatory activity, inducing inflammation with either arachidonic acid (AA) or 12-O-tetradecanoylphorbol-13 acetate (TPA). Only corosolic acid was active in the AA assay, with similar potency to nimesulide, but all three triterpene acids inhibited TPA-induced inflammation with potencies comparable to that of indomethacin. PMID:16697209

  20. Avaliação da qualidade de folhas de boldo-do-chile (Peumus boldus Molina comercializadas em Curitiba, PR

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    M.C.S. Barbosa

    2001-01-01

    Full Text Available Foi realizada a avaliação da qualidade de amostras de boldo-do-chile (Peumus boldus Molina comercializadas na Região Metropolitana de Curitiba. Os resultados mostraram que todas as amostras são autênticas, mas os resultados das análises físico-químicas mostraram-se discrepantes em relação aos parametros da Farmacopéia Brasileira e outras bibliografias de referência.Samples of boldo-do-chile (Peumus boldus Molina commercialized at the metropolitan area of Curitiba/PR were evaluated to establish their quality control patterns. The results showed that all samples are authentic but the data obtained for the physico-chemical parameters differ from those related at the Brazilian Pharmacopoeia IV ed.

  1. A new species of Syphacia (Nematoda: Oxyuridae) from Calomys laucha (Rodentia: Cricetidae) in an agroecosystem of central Argentina.

    Science.gov (United States)

    Herrera, Elba Juliana Rojas; Miño, Mariela Haydée; Notarnicola, Juliana; Robles, María del Rosario

    2011-08-01

    A new oxyurid nematode Syphacia hodarae n. sp. is described from the cecum and rectum of the cricetid rodent Calomys laucha Fischer, 1814 (Sigmodontinae, Phyllotini), captured in an agroecosystem of central Argentina. The new species is distinguished from other members of the genus mainly by the shape of the cephalic plate, presence of cervical alae in females, absence of lateral alae, and absence of deirids. Some characters are shared with Syphacia carlitosi, a parasite of Akodon azarae from the wetlands in Argentina. However, S. hodarae can be differentiated from this species by the absence of ornamentation on the accessory hook of the gubernaculum, length of spicule and gubernaculum, size of the eggs, and distance to the vulva from the anterior end. This is the first record of a Syphacia species from the tribe Phyllotini in Argentina, and the first time a Syphacia species is reported from C. laucha . PMID:21506826

  2. Insecticidal Properties of Peumus boldus Molina Powder Used Alone and Mixed with Lime Against Sitophilus zeamais Motschulsky (Coleopter: Curculionidae Propiedades Insecticidas del Polvo de Peumus boldus Molina Solo y en Mezcla con Cal contra Sitophilus zeamais Motschulsky (Coleoptera: Curculionidae

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    Gabriel Bustos-Figueroa

    2009-09-01

    Full Text Available The insecticidal properties of boldus (Peumus boldus Molina powder used alone and mixed with lime against adults of maize weevil (Sitophilus zeamais Motschulsky were evaluated under laboratory conditions. Additionally, aeration effects (presence or absence and temperature (room temperature vs. 3 ºC on insecticidal properties were studied over time. A mortality rate of 100% was observed at 20 g kg-1 (w/w of P. boldus powder when used alone and mixed with lime in proportions of 50:50, 60:40, and 80:20. The 50% lethal concentration (LC50 for all treatments was Se evaluaron las propiedades insecticidas del polvo de boldo (Peumus boldus Molina, solo y en mezcla con cal, bajo condiciones de laboratorio. Adicionalmente, se evaluó el efecto de la aeración (presencia vs. ausencia y de la temperatura (temperatura ambiente vs. 3 ºC sobre la mortalidad y emergencia de adultos de la F1. La concentración de 20 g kg-1 (p/p del polvo de boldo ya sea solo o en combinación con cal en las proporciones de 50:50, 60:40 y 80:20 mostraron 100% de mortalidad. La concentración letal 50% (CL50, en todos los tratamientos fue menor a 5 g kg-1 (p/p mientras que la CL90 no superó 11 g kg-1 (p/p. La mezcla del polvo con los granos de maíz tanto solo como en mezcla con cal no afectó la germinación. La temperatura y la aeración no afectaron la mortalidad de los adultos parentales ni la emergencia de adultos de la F1. Cuando se mezcló el maíz con el polvo de boldo molido 24 h antes de la infestación con adultos, la mortalidad de los adultos parentales y la emergencia de adultos de la F1 fue de 100 y de 0%, respectivamente. Los resultados no fueron satisfactorios cuando el polvo de boldo almacenado durante 30, 60 y 90 d fue mezclado con el maíz infestado. La toxicidad del follaje de boldo es alta 24 h después de pulverizarse; si el tiempo es mayor, la toxicidad declina significativamente.

  3. The role of growth stop as a morphogenetic factor in Mastomys natalensis (Rodentia: Muridae)

    DEFF Research Database (Denmark)

    Fadda, Carlo; Leirs, Herwig

    2009-01-01

    The present study investigated growth patterns under three different environmental conditions in a single population of the rodent Mastomys natalensis (Rodentia, Muridae) in Morogoro, Tanzania. The study aimed to test whether and how post-weaning ontogenetic processes are affected by different...... second half of the year in years when the November/December rains were very poor. The second group (beta generation) grew under conditions when these rains were abundant. Finally, the gamma generation, consisted of animals that were born in the middle of the rainy season in years when there was a...

  4. Karyological geographic variation of Oligoryzomys nigripes Olfers, 1818 (Rodentia, Cricetidae from Brazil

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    Roberta Paresque

    2007-01-01

    Full Text Available The karyotypes of 85 specimens of Oligoryzomys nigripes (Rodentia, Sigmodontinae collected in the Cerrado and Atlantic Forest of seven states of Brazil were analyzed. Eighty four specimens presented a karyotype with 2n = 62 and one individual had 2n = 61 due to a monosomy of the X chromosome. High levels of intra- and inter-population karyotypic variability, due to sex chromosomes heteromorphisms and pericentric inversions in four autosomes (pairs 2, 3, 4 and 8, led to a variation of the autosomal arm numbers (fundamental number, FN from 78 to 82. Synaptonemal complex analyses revealed normal meiosis in males heterozygous for pericentric inversions. We found 39 different cytotypes, 27 of which are herein described for the first time. A literature survey revealed 46 described karyotypes for O. nigripes. We tested the hypothesis that chromosomal variants frequencies are dependent on geographical distribution and we propose a model for the karyotypical evolution of Oligoryzomys nigripes with 2n = 62/FN = 78-82.

  5. Description of the karyotype of Rhagomys rufescens Thomas, 1886 (Rodentia, Sigmodontinae from Southern Brazil Atlantic forest

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    André Filipe Testoni

    2010-01-01

    Full Text Available Rhagomys rufescens (Rodentia: Sigmodontinae is an endemic species of the Atlantic forest from Southern and Southeastern Brazil. Some authors consider Rhagomys as part of the tribe Thomasomyini; but its phylogenetic relationships remain unclear. Chromosomal studies on eight specimens of Rhagomys rufescens revealed a diploid number of 2n = 36 and a number of autosome arms FN = 50. GTG, CBG and Ag-NOR banding and CMA3/DAPI staining were performed on metaphase chromosomes. Eight biarmed and nine acrocentric pairs were found in the karyotype of this species. The X and Y chromosomes were both acrocentric. Most of the autosomes and the sex chromosomes showed positive C-bands in the pericentromeric region. The X chromosome showed an additional heterochromatic block in the proximal region of the long arm. Nucleolus organizer regions (NORs were located in the pericentromeric region of three biarmed autosomes (pairs 4, 6 and 8 and in the telomeric region of the short arm of three acrocentrics (pairs 10, 12 and 17. CMA3/DAPI staining produced fluorescent signals in many autosomes, especially in pairs 4, 6, and 8. This study presents cytogenetic data of Rhagomys rufescens for the first time.

  6. Nitric oxide production by Peromyscus yucatanicus (Rodentia infected with Leishmania (Leishmania mexicana

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    Elsy Nalleli Loría-Cervera

    2013-04-01

    Full Text Available Peromyscus yucatanicus (Rodentia: Cricetidae is a primary reservoir of Leishmania (Leishmania mexicana (Kinetoplastida: Trypanosomatidae. Nitric oxide (NO generally plays a crucial role in the containment and elimination of Leishmania. The aim of this study was to determine the amount of NO produced by P. yucatanicus infected with L. (L. mexicana. Subclinical and clinical infections were established in P. yucatanicus through inoculation with 1 x 10 2 and 2.5 x 10 6 promastigotes, respectively. Peritoneal macrophages were cultured alone or co-cultured with lymphocytes with or without soluble Leishmania antigen. The level of NO production was determined using the Griess reaction. The amount of NO produced was significantly higher (p ≤ 0.0001 in co-cultured macrophages and lymphocytes than in macrophages cultured alone. No differences in NO production were found between P. yucatanicus with subclinical L. (L. mexicana infections and animals with clinical infections. These results support the hypothesis that the immunological mechanisms of NO production in P. yucatanicus are similar to those described in mouse models of leishmaniasis and, despite NO production, P. yucatanicus is unable to clear the parasite infection.

  7. Lamotheoxyuris ackerti n. gen., n. comb. (Nematoda: Heteroxynematidae parasite of Neotoma spp. (Rodentia: Muridae Lamotheoxyuris ackerti n. gen., n. comb. (Nematoda: Heteroxynematidae parásito de Neotoma spp. (Rodentia: Muridae

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    JORGE FALCÓN-ORDAZ

    2010-06-01

    Full Text Available On the basis of the revision of the type material of Aspiculuris ackerti Kruidenier & Mehra, 1959, and new specimens collected from Neotoma nelsoni Goldman, 1905 (Rodentia: Cricetidae, in Veracruz, Mexico, we herein to which A. ackerti is transferred as Lamotheoxyuris ackerti This new genus differs from all other genera included in 1 mouth surrounded by six lips; 2 extension of lateral alae describe a new genus (Lamotheoxyuris n. gen., (Kruidener & Mehra, 1959 n. gen., n. comb. Heteroxynematinae by the following main traits: reduced; and 3 lack of caudal alae.Con base en la revisión del material tipo de Aspiculuris ackerti Kruidenier y Mehra, 1959 y de nuevos ejemplares recolectados en Neotoma nelsoni Goldman, 1905 (Rodentia: Cricetidae, en Veracruz, México, se describe un nuevo género (Lamotheoxyuris n. gen., al que A. ackerti es transferido como Lamotheoxyuris ackerti (Kruidener y Mehra, 1959 n. gen., n. comb. Este nuevo género se distingue de todos los demás géneros incluidos en Heteroxynematinae por las siguientes características: 1 presencia de seis labios rodeando la boca; 2 extensión reducida del ala lateral; y 3 carencia de ala caudal.

  8. Isolation and Characterization of Phenolic Compounds and Anthocyanins from Murta (Ugni molinae Turcz. Fruits. Assessment of Antioxidant and Antibacterial Activity

    Directory of Open Access Journals (Sweden)

    Maria Paula Junqueira-Gonçalves

    2015-03-01

    Full Text Available Berry fruit consumption has become important in the promotion of human health, mainly due to their phenolic compounds, which have been associated with protection against different pathologies, as well as antimicrobial and other biological activities. Consequently, there has been a growing interest in identifying natural antioxidants and antimicrobials from these plants. This study aimed to characterize the phenolic chemical composition and anthocyanin profile of murta (Ugni molinae Turcz. fruit, and to evaluate the antioxidant and antimicrobial activity of its extracts (ethanolic and methanolic. LC/MS of the ethanolic extracts showed the presence of three major compounds: caffeic acid 3-glu, quercetin-3-glu and quercetin, while in the methanolic acid extract they were cyanidin-3-glucoside, pelargonidin-3-arabinose and delphinidin-3-glucoside. The antioxidant activity of ethanolic extracts (DPPH· and ORAC assays was higher than that of methanol acid extracts or purified anthocynins. Furthermore, the methanol acid extract showed an inhibitory activity against the bacteria E. coli and S. typhi similar to that of standard antibiotics. The results suggest that the antioxidant activity of the ethanolic extract is regulated by the high content of phenolic compounds and the fruit’s characteristic color is due to the content of pelargonidin-3-arabinose and delphinidin-3-glucoside. The obtained results demonstrated the appreciable antioxidant and antibacterial activities, providing opportunities to explore murta extracts as biopreservatives.

  9. Isolation and characterization of phenolic compounds and anthocyanins from Murta (Ugni molinae Turcz.) fruits. Assessment of antioxidant and antibacterial activity.

    Science.gov (United States)

    Junqueira-Gonçalves, Maria Paula; Yáñez, Lina; Morales, Carolina; Navarro, Muriel; A Contreras, Rodrigo; Zúñiga, Gustavo E

    2015-01-01

    Berry fruit consumption has become important in the promotion of human health, mainly due to their phenolic compounds, which have been associated with protection against different pathologies, as well as antimicrobial and other biological activities. Consequently, there has been a growing interest in identifying natural antioxidants and antimicrobials from these plants. This study aimed to characterize the phenolic chemical composition and anthocyanin profile of murta (Ugni molinae Turcz.) fruit, and to evaluate the antioxidant and antimicrobial activity of its extracts (ethanolic and methanolic). LC/MS of the ethanolic extracts showed the presence of three major compounds: caffeic acid 3-glu, quercetin-3-glu and quercetin, while in the methanolic acid extract they were cyanidin-3-glucoside, pelargonidin-3-arabinose and delphinidin-3-glucoside. The antioxidant activity of ethanolic extracts (DPPH· and ORAC assays) was higher than that of methanol acid extracts or purified anthocynins. Furthermore, the methanol acid extract showed an inhibitory activity against the bacteria E. coli and S. typhi similar to that of standard antibiotics. The results suggest that the antioxidant activity of the ethanolic extract is regulated by the high content of phenolic compounds and the fruit's characteristic color is due to the content of pelargonidin-3-arabinose and delphinidin-3-glucoside. The obtained results demonstrated the appreciable antioxidant and antibacterial activities, providing opportunities to explore murta extracts as biopreservatives. PMID:25838172

  10. Identification of Fungus Flora Associated with Lagenaria Siceraria (Molina Standl in Côte d’Ivoire

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    Koffi Ahébé Marie-Hélène

    2013-10-01

    Full Text Available Lagenaria siceraria (Molina Standl is a cucurbit which seeds are consumed by people in rural and urban Africa. This plant is subjected to a strong parasitic and diseases pressure that reduces seeds production. Efficient fight against plant parasite, particularly fungus is a prerequisite for an improved productivity. This study was undertaken in five localities (Alepe, Bondoukou, Bongouanou, Divo and Korhogo belonging to three agroecological areas of Côte d’Ivoire. The aim was to identify fungal genera infecting L. siceraria in order to design an efficient control measure. Leaf samples with necrosis and discoloration symptoms were collected throughout the localities and subsequently, fungus were isolated and identified in laboratory. From a total of 750 samples collected, 7 types of symptoms were distinguished. Fungal genera found in all of the localities were Aspergillus, Botryosphaeria, Cochliobolus, Colletotrichum, Fusarium, Lasiodiplodia and Phoma. Only Pestalotiopsis was specific to the locality of Divo. An ANOVA test performed on the data showed a significant difference between fungal genera in terms of isolation frequency. Principal components analysis revealed that fungus distribution in each locality was correlated with climatic factors.

  11. Presence of a Phytoplasma Associated with Witches’-Broom Disease in Ugni molinae Turcz. and Gaultheria phillyreifolia (Pers.) Sleumer Determined by DAPI, PCR, and DNA Sequencing Presencia de un Fitoplasma Asociado a la Enfermedad de "Escoba de Bruja" en Ugni molinae Turcz. y Gaultheria phillyreifolia (Pers.) Sleumer Determinado Mediante DAPI, PCR y Secuenciación de ADN

    OpenAIRE

    Nolberto Arismendi S; Nancy Andrade S; Ricardo Riegel Sch; Roberto Carrillo Ll.

    2010-01-01

    Murta (Ugni molinae Turcz.) and common chaura (Gaultheria phillyreifolia (Pers.) Sleumer) are native species of Chile. Plants of both species have shown over-branching like witches' broom. The causal agents of these symptoms in many plants are phytoplasma. To verify the presence of these microorganisms, DAPI (4',6-diamidino-2-phenylindole) staining analysis and polymerase chain reaction (PCR) were performed in symptomatic and asymptomatic plants. Positive PCR samples were sequenced to identif...

  12. Polyphenol content and antioxidant activity of maqui (Aristotelia chilensis Molina Stuntz) during fruit development and maturation in Central Chile Contenidos de polifenoles y actividad antioxidante de maqui (Aristotelia chilensis Molina Stuntz) durante el desarrollo y maduración de frutos en Chile Central

    OpenAIRE

    Carolina Fredes; Gloria Montenegro; Juan Pablo Zoffoli; Miguel Gómez; Paz Robert

    2012-01-01

    Maqui (Aristotelia chilensis Molina Stuntz, Elaeocarpaceae) is a Chilean native species which produces small berries that are mainly collected from the wild. The health benefits of maqui fruit are attributed to their high polyphenol content as well as their wide variety of anthocyanins and flavonols. One of the main factors that affect the polyphenol content in fruit is the maturity stage at harvest. The objective of this study was to determine total phenol and total anthocyanin content and a...

  13. Extended longevity of reproductives appears to be common in Fukomys mole-rats (Rodentia, Bathyergidae.

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    Philip Dammann

    Full Text Available African mole-rats (Bathyergidae, Rodentia contain several social, cooperatively breeding species with low extrinsic mortality and unusually high longevity. All social bathyergids live in multigenerational families where reproduction is skewed towards a few breeding individuals. Most of their offspring remain as reproductively inactive "helpers" in their natal families, often for several years. This "reproductive subdivision" of mole-rat societies might be of interest for ageing research, as in at least one social bathyergid (Ansell's mole-rats Fukomys anselli, breeders have been shown to age significantly slower than non-breeders. These animals thus provide excellent conditions for studying the epigenetics of senescence by comparing divergent longevities within the same genotypes without the inescapable short-comings of inter-species comparisons. It has been claimed that many if not all social mole-rat species may have evolved similar ageing patterns, too. However, this remains unclear on account of the scarcity of reliable datasets on the subject. We therefore analyzed a 20-year breeding record of Giant mole-rats Fukomys mechowii, another social bathyergid species. We found that breeders indeed lived significantly longer than helpers (ca. 1.5-2.2fold depending on the sex, irrespective of social rank or other potentially confounding factors. Considering the phylogenetic positions of F. mechowii and F. anselli and unpublished data on a third Fukomys-species (F. damarensis showing essentially the same pattern, it seems probable that the reversal of the classic trade-off between somatic maintenance and sexual reproduction is characteristic of the whole genus and hence of the vast majority of social mole-rats.

  14. De la Historia moral a la Historia civil en el Compendio de la Historia Civil del Reyno de Chile (1787 del abate Juan Ignacio Molina

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    Luis Hachim Lara

    2008-01-01

    Full Text Available El jesuíta Juan Ignacio Molina escribió el Compendio de la Historia Geográfica, Natural y Civil deIReynodeChile (1776 y el Compendio de la HistoriaCivil del ReynodeChile (1787 en el exilio italiano. En los estudios sobre los jesuítas, sus Historias naturales no han sido exploradas en cuanto a la importancia cultural, literaria y crítica que implican. En este trabajo se tratarán algunos rasgos de la escritura de la Historia que constituyen el discurso de la ciencia y que muestran el desarrollo que va desde la Historia naturaly moral -que desde Aristótelesy Plinio representa la ciencia clásica- a los nuevos modos de conocer que representa el modelo de ciencia de la Ilustración. En consecuencia, el aporte del Abate Molina en su Compendio de la Historia Civil consiste en incorporar la concepción de progreso en los usos y costumbres de los indígenas, aportando una visión de integración diferente a la civilidad. Sabemos que con posterioridad al siglo dieciocho el aporte de muchos astrónomos, médicos y científicos jesuítas -en América- construyeron las bases de la ciencia moderna y progresiva, representando la continuidad más que la regresión en el desarrollo científico tal como lo concebimos actualmente.TheJesuit Juan Ignacio Molina vimte the Compendiode la Historia Geográfica, natural y Civil del Reyno de Chile (1776 y el Compendio de la Historia Civil del Reyno de Chile (1787 in exile in Italy. In relation to criticism, the thinking of the naturalist of the company in the transition -some see opposition-from the model of traditional and scholastic science to the paradigm of modern and enlightened science was importantThis assignment will consider some of the characteristics of the writing of history, which constitute the discourse of science and show the development from the moral and natural history -the classical science of Aristotle and Plinio- to the new forms of knowledge that represent the model of science of the enlight

  15. ENRIQUECIMIENTO AMBIENTAL DE NUTRIA MARINA Lontra felina (MOLINA 1782) EN EL PARQUE ZOOLÓGICO HUACHIPA ENTRE FEBRERO Y MARZO DEL 2007

    OpenAIRE

    Elisa Diana Ruiz Ramos; Edward Iván Díaz Carrillo

    2008-01-01

    El enriquecimiento ambiental es una herramienta empleada para mejorar situaciones de aburrimiento, estrés y así evitar enfermedades causadas por la inactividad de la vida en cautiverio en la fauna silvestre. El presente trabajo se desarrolló con 2 individuos de nutria marina Lontra felina (Molina 1782) en cautiverio, durante cinco semanas: en la primera semana se realizó la determinación de los patrones de comportamiento mediante un muestreo Ad libitum, y durante las cuatro semanas restantes ...

  16. Control of the biological process through continuous measurement of the sludge age. Experiences in the WWTP Molina de Segura (Murcia, Spain)

    International Nuclear Information System (INIS)

    This paper reports the results obtained when a sludge age based control is incorporated in the biological process of a wastewater treatment plant (WWTP). Greater stability of the biological process is achieved when this control is implemented in WWTP of Molina de Segura. In particular biodiversity has increased and it has been possible to reduce and stabilize the secondary sludge production. An improvement of the sludge decantation and a reduction of the specific volumetric load of secondary clarifiers have also been observed. finally, costs have been reduced dur to the decrease of cationic polyelectrolyte consumption. (Author) 16 refs.

  17. Tropos y fotos para establecer identidad en El jinete polaco de Antonio Muñoz Molina

    OpenAIRE

    Corbellini, Natalia

    2008-01-01

    A partir de la lectura de El jinete polaco Antonio Muñoz Molina se reflexiona sobre la construcción del discurso sobre la memoria histórica que realiza el autor en esta novela. Se analiza la utilización de fotos e imágenes como motivos a partir de los cuales los personajes arman su relato del pasado desde una perspectiva personal. Se pone en consideración este procedimiento con otras novelas del autor y como característica de autores contemporáneos.

  18. First description of the nymph and larva of Dermacentor compactus Neumann, 1901 (Acari: Ixodidae), parasites of squirrels (Rodentia: Sciuridae) in southeast Asia.

    Science.gov (United States)

    Apanaskevich, Dmitry A

    2016-05-01

    Recent reexamination of collection lots stored in the United States National Tick Collection revealed adult specimens of Dermacentor compactus Neumann, 1901 (Acari: Ixodidae) reared from field-collected nymphs, which allowed us to associate field-collected unidentified nymphs and larvae with this species. Nymphs of D. compactus can be easily distinguished from those of other congeneric species by the shape of the scutum and spiracular plate, the hypostome dentition, and the size of the spurs on the coxae. Larvae of this species can be distinguished by the shape and sculpture of the scutum, the shape of basis capituli, the absence of auriculae, and the size of the spurs on coxae II and III. Both nymphs and larvae feed mostly on various species of squirrels (Rodentia: Sciuridae). Considerably fewer nymphs and larvae were found on murid rodents (Rodentia: Muridae), domestic dogs (Carnivora: Canidae), and a snake (Squamata: Colubridae). PMID:27095664

  19. Identification and Characterization of Microsatellite Loci in Maqui (Aristotelia chilensis [Molina] Stunz) Using Next-Generation Sequencing (NGS)

    Science.gov (United States)

    Bastías, Adriana; Correa, Francisco; Rojas, Pamela; Almada, Rubén; Muñoz, Carlos; Sagredo, Boris

    2016-01-01

    Maqui (Aristotelia chilensis [Molina] Stunz) is a small dioecious tree native to South America with edible fruit characterized by very high antioxidant capacity and anthocyanin content. To preserve maqui as a genetic resource it is essential to study its genetic diversity. However, the complete genome is unknown and only a few gene sequences are available in databases. Simple sequence repeats (SSR) markers, which are neutral, co-dominant, reproducible and highly variable, are desirable to support genetic studies in maqui populations. By means of identification and characterization of microsatellite loci from a maqui genotype, using 454 sequencing technology, we develop a set of SSR for this species. Obtaining a total of 165,043 shotgun genome sequences, with an average read length of 387 bases, we covered 64 Mb of the maqui genome. Reads were assembled into 4,832 contigs, while 98,546 reads remained as singletons, generating a total of 103,378 consensus genomic sequences. A total of 24,494 SSR maqui markers were identified. Of them, 15,950 SSR maqui markers were classified as perfects. The most common SSR motifs were dinucleotide (31%), followed by tetranucleotide (26%) and trinucleotide motifs (24%). The motif AG/CT (28.4%) was the most abundant, while the motif AC (89 bp) was the largest. Eleven polymorphic SSRs were selected and used to analyze a population of 40 maqui genotypes. Polymorphism information content (PIC) ranged from 0.117 to 0.82, with an average of 0.58. Non-significant groups were observed in the maqui population, showing a panmictic genetic structure. In addition, we also predicted 11150 putative genes and 3 microRNAs (miRNAs) in maqui sequences. This results, including partial sequences of genes, some miRNAs and SSR markers from high throughput next generation sequencing (NGS) of maqui genomic DNA, constitute the first platform to undertake genetic and molecular studies of this important species. PMID:27459734

  20. Identification and Characterization of Microsatellite Loci in Maqui (Aristotelia chilensis [Molina] Stunz) Using Next-Generation Sequencing (NGS).

    Science.gov (United States)

    Bastías, Adriana; Correa, Francisco; Rojas, Pamela; Almada, Rubén; Muñoz, Carlos; Sagredo, Boris

    2016-01-01

    Maqui (Aristotelia chilensis [Molina] Stunz) is a small dioecious tree native to South America with edible fruit characterized by very high antioxidant capacity and anthocyanin content. To preserve maqui as a genetic resource it is essential to study its genetic diversity. However, the complete genome is unknown and only a few gene sequences are available in databases. Simple sequence repeats (SSR) markers, which are neutral, co-dominant, reproducible and highly variable, are desirable to support genetic studies in maqui populations. By means of identification and characterization of microsatellite loci from a maqui genotype, using 454 sequencing technology, we develop a set of SSR for this species. Obtaining a total of 165,043 shotgun genome sequences, with an average read length of 387 bases, we covered 64 Mb of the maqui genome. Reads were assembled into 4,832 contigs, while 98,546 reads remained as singletons, generating a total of 103,378 consensus genomic sequences. A total of 24,494 SSR maqui markers were identified. Of them, 15,950 SSR maqui markers were classified as perfects. The most common SSR motifs were dinucleotide (31%), followed by tetranucleotide (26%) and trinucleotide motifs (24%). The motif AG/CT (28.4%) was the most abundant, while the motif AC (89 bp) was the largest. Eleven polymorphic SSRs were selected and used to analyze a population of 40 maqui genotypes. Polymorphism information content (PIC) ranged from 0.117 to 0.82, with an average of 0.58. Non-significant groups were observed in the maqui population, showing a panmictic genetic structure. In addition, we also predicted 11150 putative genes and 3 microRNAs (miRNAs) in maqui sequences. This results, including partial sequences of genes, some miRNAs and SSR markers from high throughput next generation sequencing (NGS) of maqui genomic DNA, constitute the first platform to undertake genetic and molecular studies of this important species. PMID:27459734

  1. Terminología botánica indígena en el vocabulario castellano-mexicano (1555 de Fray A. de Molina

    Directory of Open Access Journals (Sweden)

    Galeote Manuel

    2002-06-01

    Full Text Available

    Las voces indígenas de la flora americana, que fray Alonso de Molina incluye en la sección castellana de su obra: Aquí comience un vocabulario en la lengua castellana y mexicana (México, Juan Pablos, 1555 se analizan desde el punto de vista histórico y sociolingüístico. Se trata del primer vocabulario de Molina el Nebrija de las Indias y, además, el primer diccionario impreso en México y en América. En las entradas castellanas, los términos indígenas americanos de la flora (plantas y frutas constituyen uno de los campos onomasiológicos más numerosos (maíz, cacao, maguey, chía, ají, etc. De los once términos indígenas hemos contabilizado casi un centenar de ocurrencias. En conclusión, este vocabulario muestra el fondo léxico patrimonial del español y los indoamericanismos que se acomodaron a las estructuras de la lengua castellana.

  2. LA VOZ NARRATIVA COMO COMPROMISO CON LA VERDAD ANÁLISIS DEL NARRADOR EN LA NOVELA LA NOCHE DE LOS TIEMPOS, DE MUÑOZ MOLINA

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    Enrique Arroyas

    2012-07-01

    Full Text Available Resumen: Este artículo consiste en un análisis de la voz narrativa de la novela La noche de los tiempos, según un modelo comunicativo que abarca tanto aspectos sintácticos y semánticos como pragmáticos que permitan arrojar luz sobre el sentido del texto. Desde un enfoque pragmático se analiza la finalidad de la narración como acto comunicativo en la que se plantea la relación del discurso con su contexto y del enunciador con el enunciatario. La elección de la voz narrativa y su focalización es uno de los grandes aciertos de esta novela de Muñoz Molina, puesto que en ella reside su verosimilitud y su carácter ético. Abstract: This article examines the narrative voice of La noche de los tiempos, a novel by Antonio Muñoz Molina, according to a communicative model that treats syntactic, semantic, and pragmatics aspects that shed light on the meaning of the text.From a pragmatic perspective I analyze the purpose of the narrative as a communicative act which establishes a relationship of the discourse to its context and of the narrator to the narratee. The choice of narrative voice and its focalization is one of the great achievements of this novel, since it is the source of the work’s verisimilitude and ethical character.

  3. AGRO-BOTANICAL CHARACTERISTICS OF LAGENARIA (Lagenaria siceraria (Molina Standl. IN IMAGES AND SYMBOLS Агро-ботанические характеристики лагенарии (Lagenaria siceraria (Molina Standl. в образах и символах

    Directory of Open Access Journals (Sweden)

    Tsatsenko L. V.

    2013-09-01

    Full Text Available The article considers the agro-botanical characteristics of pumpkin annual plants – lagenaria ( Lagenaria siceraria (Molina Standl. have been consider in article. The task of the analytical study went in search of communication between anatomic-morphological characteristics of plant and use this in the images, the iconography of the cultural traditions of different nation

  4. Método rápido de determinación del sexo en el erizo comestible Loxechinus albus (Molina, 1782) y su aplicación en estudios biológico-pesqueros Simple methodology to identify sex of sea urchin Loxechinus albus (Molina, 1782), and its application to fishery-biological studies

    OpenAIRE

    Sergio Palma G; Patricio Arana E

    1996-01-01

    La identificación del sexo en el erizo comestible Loxechinus albus (Molina, 1782), es difícil de realizar si no se realiza un análisis de laboratorio, lo que motiva que en la mayoría de las investigaciones efectuadas sobre este recurso se consideren ambos sexos en conjunto. En el presente artículo se describe una metodología simple para establecer el sexo en el erizo, lo que permite obtener parámetros biológico-pesqueros en forma separada para machos y hembras. A través de los procedimientos ...

  5. Control of the biological process through continuous measurement of the sludge age. Experiences in the WWTP Molina de Segura (Murcia, Spain); Control del proceso biologico mediante la medida en continuo de la edad del fango. Experiencias en la EDAr Molina de Segura (Murcia)

    Energy Technology Data Exchange (ETDEWEB)

    Marques, F.; Pradas, P.; Lardin, C.; Simon, P.

    2010-07-01

    This paper reports the results obtained when a sludge age based control is incorporated in the biological process of a wastewater treatment plant (WWTP). Greater stability of the biological process is achieved when this control is implemented in WWTP of Molina de Segura. In particular biodiversity has increased and it has been possible to reduce and stabilize the secondary sludge production. An improvement of the sludge decantation and a reduction of the specific volumetric load of secondary clarifiers have also been observed. finally, costs have been reduced dur to the decrease of cationic polyelectrolyte consumption. (Author) 16 refs.

  6. Occurrence of Conepatus chinga (Molina (Mammalia, Carnivora, Mustelidae and other terrestrial mammals in the Serra do Mar, Paraná, Brazil

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    Nilton C. Cáceres

    2004-09-01

    Full Text Available In this paper 19 additional mammalian species are reported in the Atlantic forest of the Paranean Serra do Mar, southern Brazil, including threatened and rare species. These findings resulted from a one-year field research in the western slope of the Serra do Mar, Piraquara municipality, with additional review of reports about mammal distribution in the region. Preliminarily mammal richness in the region is round 54 species, but this number could be higher with more systematic surveys, particularly with regards to bats. The occurrence of the hog-nosed skunk, Conepatus chinga (Molina, 1782, is reported for the first time in the eastern portion of Paraná, a State vastly deforested during the last century in Brazil.Neste artigo, 19 espécies adicionais de mamíferos são informadas para a Floresta Atlântica da Serra do Mar paranaense, sul do Brasil, incluindo espécies ameaçadas e raras. Este relato é resultado de uma pesquisa de campo de um ano na vertente oeste da Serra do Mar, município de Piraquara¸ com revisão adicional de relatos sobre a distribuição de mamíferos na região. A riqueza preliminar de mamíferos na Serra do Mar paranaense é de 54 espécies, mas este número poderá aumentar quando mais inventários faunísticos forem realizados, principalmente para morcegos. A ocorrência do cangambá, Conepatus chinga (Molina, 1782, é relatada pela primeira vez na porção leste do Paraná, um Estado altamente desflorestado neste último século no Brasil.

  7. Effect of methanolic extract of Lagenaria siceraria (Molina Standley fruits on marble-burying behavior in mice: Implications for obsessive-compulsive disorder

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    R P Prajapati

    2011-01-01

    Full Text Available Context: Obsessive-compulsive disorder (OCD is the fourth most common mental disorder and is diagnosed nearly as often as asthma and diabetes mellitus. Over the last decade, the inhibition of burying of glass marbles by mice has been used as an index of anti-OCD drug action in the so-called marble-burying test. Lagenaria siceraria (Molina Standley (LS, commonly known as "bottle gourd" (English, possesses several medicinal properties; little is known about its action as a nerve tonic. Objective: The purpose of this study was to characterize the anti-OCD (anti-compulsive activity of the methanolic extract of the fruits of L. siceraria (Molina Standley (LS using the marble-burying behavior in mice. Materials and Methods: The experiment was conducted in specific animal models of Swiss albino mice to evaluate marble-burying behavior. Results and Conclusions: Intraperitonial administration of 25 and 50 mg/kg of LS extract significantly (P < 0.001 decreased the total number of buried marbles. The effect was comparable to that of the fluoxetine (10 mg/kg, i.p.. Fluoxetine and LS fruit extract do not produce any overt motor dysfunction. Preliminary phytochemical screening of the methanolic extract of LS showed the presence of flavonoids, saponins, sterols, proteins, tannins and carbohydrates. The results of the study for the first time show that the plant possesses anti-compulsive (anti-OCD activity, confirming the traditional claims. Future research should focus on the identification and the mechanism of action of the constituents from this plant.

  8. TENSIONES ENTRE LITERATURA, CIENCIA, EXPERIENCIA E HISTORIA EN UN INTELECTUAL DE LA SATTELZEIT HISPANOAMERICANA: LOS PREFACIOS EN LA PROSA CIENTÍFICA DE JUAN IGNACIO MOLINA Tensions between literature, science, experience and history in an intellectual of the Sattelzeit in Spanish America: the prefaces in the scientific prose of Juan Ignacio Molina

    Directory of Open Access Journals (Sweden)

    Adolfo de Nordenflycht B

    2009-12-01

    Full Text Available Este estudio se propone una revisión de los prefacios de las principales obras de Juan Ignacio Molina (el Compendio anónimo de 1776, el Saggio de 1782 traducido al español como Compendio en 1788 y el Saggio de 1810 a fin de evidenciar cómo ciertos aspectos literarios de su prosa científica -en particular, los problemas del género (ensayo, compendio la escritura de "historias naturales", el significado del narrar y el sentido de la experiencia del sujeto- ilustran las tensiones inherentes durante el proceso del cambio semántico del concepto de "ciencia" en el marco de la Sattelzeit hispanoamericana.A study which propounds a review of the prefaces of Juan Ignacio Molina's principal works (the anonymous Compendio 1116, the Saggio 1782, translated into Spanish like Compendio in 1788 and the Saggio 1810 in order to demonstrate how certain literary aspects of his scientific prose -in particular, gender issues (essay, compendium, the writing of "Natural History", the meaning of the narrative and the sense of the subject's experience- ¡Ilustrate the tensions inherent in the process of semantic change of the concept of "science" in the frame of the Sattelzeit in Spanish América.

  9. Método rápido de determinación del sexo en el erizo comestible Loxechinus albus (Molina, 1782 y su aplicación en estudios biológico-pesqueros Simple methodology to identify sex of sea urchin Loxechinus albus (Molina, 1782, and its application to fishery-biological studies

    Directory of Open Access Journals (Sweden)

    Sergio Palma G

    1996-01-01

    Full Text Available La identificación del sexo en el erizo comestible Loxechinus albus (Molina, 1782, es difícil de realizar si no se realiza un análisis de laboratorio, lo que motiva que en la mayoría de las investigaciones efectuadas sobre este recurso se consideren ambos sexos en conjunto. En el presente artículo se describe una metodología simple para establecer el sexo en el erizo, lo que permite obtener parámetros biológico-pesqueros en forma separada para machos y hembras. A través de los procedimientos que se describen, es posible separar las distribuciones de frecuencias de tallas obtenidas en los muestreos, sin diferenciar el sexo, en las correspondientes a machos y hembras. Este procedimiento es especialmente útil cuando los sexos presentan diferencias de crecimiento o mortalidad.Sex identification of the edible sea urchin Loxechinus albus (Molina, 1782, is difficult if not done in a laboratory, therefore most of the studies on this resource does not consider sexes separately. This paper describes a simple methodology to identify sex of the sea urchin, enabling the estimation of fishery-biological parameters separately for males and females. Through the described procedures, it is possible to separate by sex the length frequency distributions from samples taken without differentiating males from females. This procedure becomes specially useful when sexes show differences in growth or mortality.

  10. Descripción del nido de Scolomys melanops (Rodentia, Cricetidae y su relación con Lepidocaryum tenue (Arecales, Arecaceae

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    Edgardo M. Rengifo

    2012-11-01

    Full Text Available Se describe el nido de Scolomys melanops (Rodentia: Cricetidae, encontrado en el Nororiente de Perú en un hábitat de Colinas bajas. Se identificó tres estructuras en el nido: a Orificio de acceso y salida; b Túnel y c Dormidero, en este último se encontraron restos de frutos, fibras del pedúnculo y tallos de Lepidocaryum tenue (Arecales: Arecaceae “Irapay”. Se sugiere en base al material vegetal encontrado en el nido, la existencia de una relación de depredación entre el roedor Scolomys melanops y la palmera Lepidocaryum tenue.

  11. Actividad de polvo, extractos y aceite esencial de Peumus boldus Molina solos y en mezcla con Bacillus thuringiensis Berliner contra Spodoptera frugiperda (J.E. Smith) y Helicoverpa zea (Boddie).

    OpenAIRE

    Silva Aguayo, Gonzalo Iván

    2010-01-01

    Se evaluaron en condiciones de laboratorio e invernadero las propiedades insecticidas del polvo, aceite esencial y extracto en cloruro de metileno de Boldo (Peumus boldus Molina), además del alcaloide boldina y el terpeno 1-8-cineol (eucaliptol), solos y en combinación con Bacillus thuringiensis Berliner contra larvas de Spodoptera frugiperda (J.E. Smith) y Helicoverpa zea Boddie. Se realizaron bioensayos para evaluar mortalidad, efecto en el ciclo de vida y las preferencias alimenticias de l...

  12. Introducción al estudio de las mineralizaciones del Señorío y Tierra de Molina de Aragón (Guadalajara, España)

    OpenAIRE

    Mata Perelló, José M.; Octavio PUCHE RIART

    1992-01-01

    In this communication it's efected an introduction to the study of the mineralizations placed in the Señorio and Tierra de Molina de Aragón an historical demarcation of Guadalajara situated in the Sistema Ibérico. In this comunication, we will introduce the Study Castilian mineralizations between them, C/Ag are present as well as stratiform iron and copper mineralization.

  13. Trypanosoma (Megatrypanum) lainsoni n. sp. from Mesomys hispidus (Rodentia: Echimyidae) in Brazil: trypomastigotes described from experimentally infected laboratory mice.

    Science.gov (United States)

    Naiff, Roberto Daibes; Barrett, Toby Vincent

    2013-01-01

    We report the detection, isolation and description of Trypanosoma (Megatrypanum) lainsoni n. sp. from a caviomorph rodent, Mesomys hispidus (Rodentia: Echimyidae), obtained in the Rio Negro region of the state of Amazonas, in northern Brazil. Laboratory-bred white mice (Mus musculus) and rats (Rattus rattus) were inoculated with large numbers of culture forms by intraperitoneal route, and trypomastigotes appeared in their blood 3-8 days post-inoculation. One single epimastigote was also found in Mus musculus. Similar attempts to infect Rattus norvegicus, hamsters (Mesocricetus auratus), the opossum Didelphis marsupialis, the anteater Tamandua tetradactyla and triatomine bugs were unsuccessful, following six months of observations and microscopic examinations of blood films and blood cultures. As we have found no previous record of a Trypanosoma (Megatrypanum) species naturally infecting a member of the family Echimyidae, or any other caviomorph rodent, we conclude that this is the first time such an infection has been reported. The new species is unusual in the subgenus for its infectivity to laboratory mice. PMID:24309069

  14. Presence of a Phytoplasma Associated with Witches’-Broom Disease in Ugni molinae Turcz. and Gaultheria phillyreifolia (Pers. Sleumer Determined by DAPI, PCR, and DNA Sequencing Presencia de un Fitoplasma Asociado a la Enfermedad de "Escoba de Bruja" en Ugni molinae Turcz. y Gaultheria phillyreifolia (Pers. Sleumer Determinado Mediante DAPI, PCR y Secuenciación de ADN

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    Nolberto Arismendi S

    2010-03-01

    Full Text Available Murta (Ugni molinae Turcz. and common chaura (Gaultheria phillyreifolia (Pers. Sleumer are native species of Chile. Plants of both species have shown over-branching like witches' broom. The causal agents of these symptoms in many plants are phytoplasma. To verify the presence of these microorganisms, DAPI (4',6-diamidino-2-phenylindole staining analysis and polymerase chain reaction (PCR were performed in symptomatic and asymptomatic plants. Positive PCR samples were sequenced to identify the pathogens involved. In individuals of both species with witches’ broom symptoms, DAPI staining showed fluorescent bodies in the phloem tissues, but not in asymptomatic plants. Verification by nested-PCR, phytoplasmatic DNA was amplified from diseased murta and chaura, but not in apparently healthy plants. Sequencing of amplified products allowed locating phytoplasma within the ash yellows group (16SrVII and related to Candidatus phytoplasma fraxini. This is the first report of phytoplasma in Chilean native species. Considering the diversity of plant species infected by the ash yellows group suggests that G. phillyreifolia and U. molinae could be a phytoplasma reservoir for other economically important agricultural crops.La murta (Ugni molinae Turcz. y la chaura común (Gaultheria phillyreifolia (Pers. Sleumer son especies nativas de Chile. En plantas de ambas especies se ha observado una sobre-ramificación de tipo "escoba de bruja". En muchas plantas los agentes causales de esta sintomatología son fitoplasmas. Para verificar la presencia de estos microorganismos se analizaron plantas con y sin síntomas mediante tinciones DAPI (4’,6-diamidino-2-fenilindol y reacción en cadena de la polimerasa (PCR. Muestras positivas en la PCR fueron secuenciadas para identificar al fitopatógeno implicado. En individuos de ambas especies con síntomas de escoba de bruja, la tinción DAPI permitió observar cuerpos fluorescentes en los tejidos del floema, situaci

  15. Bioactivity of Peumus boldus Molina, Laurelia sempervirens (Ruiz & Pav. Tul. and Laureliopsis philippiana (Looser Schodde (Monimiacea essential oils against Sitophilus zeamais Motschulsky

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    Carmen Herrera-Rodríguez

    2015-09-01

    Full Text Available The maize weevil (Sitophilus zeamais Motschulsky is one of most important pest of stored seeds worldwide, but its current control method is based on the use of synthetic insecticides, usually leading to undesirable problems such as insecticide residues on treated food, human intoxications, and insect resistance development. Therefore the search of friendly alternative methods is required. The aim of this study was to assess, under laboratory conditions, the insecticidal properties of Peumus boldus Molina, Laurelia sempervirens (Ruiz & Pav. Tul., and Laureliopsis philippiana (Looser Schodde essential oils against S. zeamais. The phytochemical analysis of the three essential oils showed 1,8-cineole, safrole and methyleugenol as the common components; all of them documented with insecticidal activity from essential oils from other plant species. The highest toxicity (100% mortality of these three oils acting as a contact insecticide was observed at 24 h exposure at 4% concentration. The estimated LC50 values for P. boldus, L. sempervirens, and L. philippiana were 0.37, 1.02, and 0.28 μL g-1, respectively. Peumus boldus exhibited the highest fumigant activity with 100% adult mortality at 30 μL oil L-1 air. At ≥ 0.5% (v/w concentration, all essential oils showed repellent activity. These three essential oils showed a promissory insecticidal activity against the maize weevil.

  16. Bioactivity of a water extract of boldus (Peumus boldus Molina against Spodoptera frugiperda (J.E. Smith and Helicoverpa zea Boddie (Lepidoptera: Noctuidae

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    Gonzalo Silva

    2013-06-01

    Full Text Available The insecticidal properties of water-extract of Peumus boldus Molina and its effect on the development cycle and feeding habits of Spodoptera frugiperda J.E. Smith and Helicoverpa zea Boddie were evaluated under laboratory conditions in concentrations of 0.25, 0.5, 1.0, 2.0, 4.0, and 8.0% (w/w. Spodoptera frugiperda was the most susceptible with 75% mortality at 7 d at 8% P. boldus concentration, while H. zea had only 30% mortality. LC50 was 2.31 mL kg-1 for S. frugiperda and 16.05 mL kg¹ for H. zea. When the extract concentration increased in the diet, larval size and weight, percentage of pupation and number of adults decreased, and the time required to reach those states was greater. Neonate larvae fed primarily on the diet with the lower extract concentration and the control was preferred by more than 50% of larvae. Inhibition of feeding, growth, weight gain of 3rd instar larvae as well as new biomass production decreased with concentration of the extract.

  17. Extracts of Maqui ( Aristotelia chilensis ) and Murta ( Ugni molinae Turcz.): sources of antioxidant compounds and α-Glucosidase/α-Amylase inhibitors.

    Science.gov (United States)

    Rubilar, Mónica; Jara, Claudio; Poo, Yohany; Acevedo, Francisca; Gutierrez, Cristian; Sineiro, Jorge; Shene, Carolina

    2011-03-01

    The objective of this work was to evaluate the antioxidant and antihemolytic activities of crude, aqueous, and organic-aqueous extracts of maqui ( Aristotelia chilensis ) and murta ( Ugni molinae Turcz.), together with their inhibiting effect on enzymes involved in the metabolism of carbohydrates. Radical scavenging activity, inhibition of linoleic acid oxidation in a micellar system, antihemolytic activity, and inhibition of α-amylases and α-glucosidases were analyzed. Crude extracts of maqui leaves and fruits were found to be important sources of polyphenolic compounds, showing 69.0 ± 0.9 and 45.7 ± 1.1 mg GAE/g dm, respectively. Polyphenols from maqui leaves were active as antioxidants and antihemolytic compounds (p < 0.05), showing a noncompetitive inhibiting effect on α-glucosidase. Flavan-3-ol polymers and glycosylated flavonols, such as quercetin glucoside and kaempferol glucoside, were tentatively identified in extracts. This preliminary observation provides the basis for further examination of the suitability of polyphenol-enriched extracts from maqui and murta as nutritional or medicinal supplements with potential human health benefits. PMID:21294510

  18. Landscape dynamics and fire activity since 6740 cal yr BP in the Cantabrian region (La Molina peat bog, Puente Viesgo, Spain)

    Science.gov (United States)

    Pérez-Obiol, R.; García-Codron, J. C.; Pèlachs, A.; Pérez-Haase, A.; Soriano, J. M.

    2016-03-01

    A lack of paleobotanic studies with adequate resolution and multiproxy approaches has limited proper discussion of vegetation dynamics in Cantabria and of the role of fires in the configuration of the plant landscape during the Holocene in the northwest part of the Iberian peninsula. The pollen diagram of La Molina peat bog in Puente Viesgo (43°15‧38″ N-3°58‧37″ W; ETRS89), located at 484 m.a.s.l., and the study of its sedimentary charcoals allowed the acquisition of a continuous and thorough fire sequence for the last 6700 cal yr BP and an understanding of its relationship to the forest. The results show the importance of human influence on the incidence and characteristics of fire activity during the different phases studied: the Neolithic, Bronze Age, Iron Age, Roman period, and Middle Ages. A synergy seems to exist between dry climate periods (especially during Bond events 3 and 4) and a greater presence of biomass. As the Holocene advances, vegetation coverage clearly tends to decrease. This study provides key elements for understanding the role of fire activity in the forest dynamics of deciduous and evergreen Quercus, Corylus, Pinus, Fagus, and Alnus and demonstrates the strongly artificialized character of the present landscape.

  19. Effect of vacuum storage on shelf life of a grain protector based on Peumus boldus Molina foliage powder and lime against Sitophilus zeamais Motschulsk

    Directory of Open Access Journals (Sweden)

    Paulina Rivera

    2014-03-01

    Full Text Available The maize weevil (Sitophilus zeamais Motschulsky, Coleoptera: Curculionidae is a key pest of stored grain maize. As an ecological pest control alternative, the use of botanical insecticides, such as powder from boldus (Peumus boldus Molina foliage singly or mixed with lime, has been evaluated. Unfortunately, its shelf life is very short and does not exceed 15 d. The effectiveness of vacuum storage on insecticidal properties of a natural grain protector produced with boldus powder:lime at proportions of 50:50 and 60:40 against adults of S. zeamais was assessed under laboratory conditions. Treatments were evaluated at 1% and 2% (w/w for 150 d of storage. All treatments based on boldus powder kept the level of mortality by contact activity over 80% at 150 d of storage. The highest toxicity, as a fumigant, was observed in treatments 50:50 at 2% and 60:40 at 1% and 2% with mortality over 60%. The grain weight loss was less than 1% and seed germination was not affected. With the exception of 0:100 at 2% without vacuum storage, all treatments were repellent to S. zeamais. Vacuum storage extended shelf life of the grain protector for 150 d.

  20. Catalog of type specimens of recent mammals: Rodentia (Sciuromorpha and Castorimorpha) in the National Museum of Natural History, Smithsonian Institution

    Science.gov (United States)

    Fisher, Robert D.; Ludwig, Craig A.

    2012-01-01

    The type collection of Recent mammals in the Division of Mammals, National Museum of Natural History, Smithsonian Institution, contains 843 specimens bearing names of 820 species group taxa of Rodentia (Sciuromorpha and Castorimorpha) as of July 2011. This catalog presents a list of these holdings, which comprise 798 holotypes, 14 lectotypes, seven syntypes (30 specimens), and one neotype. In addition, we include three holotypes and 10 specimens that are part of syntype series that should be in the collection but cannot be found and three syntypes that were originally in this collection but are now known to be in other collections. One specimen that no longer has name-bearing status is included for the record. Forty-one of the names are new since the last type catalog. One new lectotype is designated. Suborders and families are listed as in Wilson and Reeder. Within families, currently recognized genera are arranged alphabetically. Within each currently recognized genus, accounts are arranged alphabetically by original published name. Information in each account includes original name and abbreviated citation thereto, current name if other than original, citation for first use of current name combination for the taxon (or new name combination if used herein for the first time), type designation, U.S. National Museum catalog number(s), preparation, age and sex, type locality, date of collection and name of collector, collector’s original number, and comments or additional information as appropriate. Digital photographs of each specimen serve as a condition report and will be linked to each electronic specimen record.

  1. Tick infestations of the eastern cottontail rabbit (Sylvilagus floridanus) and small rodentia in northwest Alabama and implications for disease transmission.

    Science.gov (United States)

    Cooney, Joseph C; Burgdorfer, Willy; Painter, Martin K; Russell, Cynthia L

    2005-12-01

    Studies were conducted over a four-county area of northwest Alabama to determine the association of eastern cottontail rabbits with Dermacentor variabilis, the eastern United States vector of Rocky Mountain spotted fever. A secondary objective was to compare infestations of this tick on rabbits with infestations on commonly encountered rodent species as a means of determining the relative importance of each in the disease transmission cycle. These epidemiologic surveys were conducted in response to reported fatal cases of Rocky Mountain Spotted Fever in two counties of the study area. From 202 eastern cottontail rabbits, 3,956 ticks were collected. Of this total, 79.87% were Haemphysalis leporispalustris, 9.15% Amblyomma americanum, 8.22% Ixodes dentatus, and 2.76% D. variabilis. Only immature stages of D. variabilis were collected from cottontail rabbits. Ticks were collected on rabbits in all months except November, and only one specimen was taken in January. Based on the average number of ticks per host collected in each month, April was the peak month for D. variabilis and I. dentatus. High values for H. leporispalustris also occurred at this time, but even higher values occurred in October and December. The heaviest infestation of A. americanum occurred during the month ofAugust and coincides with the activity period for the larvae of this species. Two hundred sixty-nine of the smaller Rodentia, comprising 13 species, yielded 264 ticks, all D. variabilis, and all but two were immature stages. Five rodent species, Microtus ochragaster Orozomys palustris, Peromyscus gossypinus, Peromyscus leucopus, and Sigmodon hispidus accounted for 95.83% of the ticks collected, and appeared to be preferred hosts for D. variabilis; all five had higher infestation levels per host than did the eastern cottontail rabbit. Data on host relationships in association with seasonal activity are presented. PMID:16599149

  2. Identidade, riqueza e abundãncia de pequenos mamíferos (Rodentia e Didelphimorphia de área de Floresta com Araucária no estado do Paraná, Brasil

    Directory of Open Access Journals (Sweden)

    Guilherme Grazzini

    2015-01-01

    Full Text Available Roedores e Marsupiais são componentes importantes da fauna na região Neotropical. Estudos sobre a riqueza e abundância destes animais são raros na Floresta Ombrófila Mista (FOM e aqui apresentamos um inventário conduzido na Floresta Nacional de Piraí do Sul. Esta área possui uma área aproximada de 150 ha, cercada por pastos e plantações de Pinus. A amostragem foi feita através de armadilhas de queda, Sherman e Tomahawk, dispostas nos principais tipos de vegetação encontrados. Pelo menos um casal de cada espécie foi coletado. Como resultado, durante 5.892 armadilhas.noite nós obtivemos um total de 1.049 capturas, representando 17 espécies: Akodon montensis, Bibimys labiosus, Brucepattersonius iheringi, Cryptonanus sp., Didelphis albiventris, D. aurita, Gracilinanus microtarsus, Monodelphis americana, M. scalops, Myocastor coypus, Nectomys squamipes, Oligoryzomys nigripes, Oxymycterus judex, O. nasutus, Sooretamys angouya e Thaptomys nigrita. Capturas por armadilhas de queda representaram 67% do total, e oito espécies foram registradas exclusivamente por este método. Akodon montensis, O. nigripes e T. nigrita foram as espécies mais abundantes.

  3. Caracterización de los suelos de usos agrícolas e industrial de la comarca de Molina de Segura (Murcia) para una planificación racional del territorio

    OpenAIRE

    Gómez García, Ana María

    2016-01-01

    El presente estudio pretende conocer la situación actual de los suelos de la comarca de Molina de Segura (Murcia) así como ver si presentan una planificación racional del territorio ya que no había estudios anteriores que caracterizaran tan detalladamente los tipos y usos de los suelos de esta comarca. Los dos principales tipos de suelos presentes son Regosoles calcáricos (suelos poco evolucionados con un horizonte A ócrico en superficie como único horizonte diagnóstico y con abundante car...

  4. Distribución paleogeográfica de las unidades del Pérmico y del Triásico en el sector Molina de Aragón-Albarracín.

    OpenAIRE

    Pérez-Arlucea, Marta

    1987-01-01

    [ES] En los sistemas Pérmico y Triásico del sector Molina de Aragón- Albarracín (Cordillera Ibérica) se pueden diferenciar dieciséis unidades litoestratigráficas. La inferior no ha podido datarse en esta zona, pero por su posición estratigráfica y características litológicas puede ser equivalente a unidades descritas como "Autuniense" por autores previos, en áreas próximas. Por encima aparece una unidad terrígena correspondiente a las facies Saxoniense, que al SE es concorda...

  5. COMPARAÇÃO DA QUALIDADE SANITÁRIA ENTRE AMOSTRAS DE Peumus boldus Molina INDUSTRIALIZADAS E ARTESANAIS DO MUNICÍPIO DE CURRAIS NOVOS, RN.

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    Fabio Gonçalves Macêdo de Medeiros

    2012-06-01

    Full Text Available As plantas medicinais, embora constituam válida vertente da Medicina Tradicional, quando mal utilizadas representam risco potencial a saúde humana. O consumo de produtos contaminados pode gerar intoxicações diversas por subprodutos advindos de microrganismos patogênicos. O presente trabalho objetivou a avaliação da qualidade microbiológica de amostras de Peumus boldus Molina artesanais, comercializadas na feira popular, e compará-la com a qualidade microbiológica de amostras da mesma espécie industrializadas, comercializadas no comércio varejista local. Foram quantificados: aeróbios mesófilos (ágar Padrão de Contagem, 35±1°C/24h, coliformes totais/Escherichia coli (teste presuntivo: caldo LST, 35±0,5°C/24-48±2; CT: caldo VB, 35±0,5°C/24-48±2; E. coli: caldo EC, 44,5±0,2°C/24±2h; ágar L-EMB, 35±0,5°C/24±2h, bolores e leveduras (ágar Batata Dextrosado Acidificado, 25±1°C/5 dias e Staphylococcus aureus (ágar Baird-Parker, 35-37°C/24±2h. Para a confirmação de E. coli, colônias foram submetidas às provas bioquímicas da série IMViC. A E. coli estava presente em 10% das amostras, o S. aureus em 50%, bolores e leveduras em 80% e aeróbios mesófilos em 100% das amostras analisadas. O estudo revelou que a tanto amostras industrializadas quanto artesanais não estavam de acordo com as recomendações de padrões sanitários e microbiológicos adequados para o comércio, caracterizando-se como riscos potenciais à Saúde Pública.

  6. Análise da contaminação fúngica em amostras de Cassia acutifolia Delile (sene e Peumus boldus (Molina Lyons (boldo-do-Chile comercializadas na cidade de Campinas, Brasil Analysis of the fungal contamination in Cassia acutifolia Delile (sene and Peumus boldus (Molina Lyons (boldo-do-Chile sold in Campinas, Brazil

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    Liliana de O. Rocha

    2004-12-01

    Full Text Available A sociedade atual tem buscado a fitoterapia como um importante recurso terapêutico, sendo a avaliação da qualidade microbiológica destes produtos um requisito essencial, considerando a sua origem. Deste modo, o objetivo da pesquisa foi realizar a contagem e a identificação de fungos filamentosos em 20 amostras de folhas de Cassia acutifolia Delile (sene e de Peumus boldus (Molina Lyons (boldo-do-Chile comercializadas em farmácias de manipulação e mercados da cidade de Campinas, Brasil, usando as técnicas microbiológicas clássicas. Os resultados obtidos evidenciaram que 45% das amostras analisadas se situavam fora dos padrões estabelecidos pela Organização Mundial da Saúde (OMS. Não foram observadas diferenças significativas na análise quantitativa da contaminação fúngica entre amostras comercializadas em farmácias de manipulação e mercados, tanto para o boldo-do-Chile como para a sene. Os fungos identificados nestas amostras foram: Aspergillus, Penicillium, Phoma, Cladosporium, Trichoderma, Rhizopus, Mucor, Aureobasidium pullulans, Mycelia sterilia, Acremonium e Monilia sitophila. Estes resultados demonstraram o baixo nível de qualidade desses fitoterápicos, pois, além do elevado número de amostras contaminadas, foram identificados fungos de gêneros produtores de micotoxinas, como o Aspergillus e o Penicillium. Verifica-se a urgência na realização de adequado controle de qualidade microbiológico dos fitoterápicos e de implantação de fiscalização efetiva, para garantir a segurança e eficácia destes produtos.The consumption of medicinal plants has increased during the last years. The purpose of this study was to evaluate and identify fungi specimens present in samples of Cassia acutifolia Delile (20 (sene and Peumus boldus (Molina Lyons (Boldo-do-Chile (20, that were purchased in drugstores and markets of Campinas, Brazil, by usual methods. The results showed that 45% of samples did not fit the minimum

  7. Polyphenol content and antioxidant activity of maqui (Aristotelia chilensis Molina Stuntz during fruit development and maturation in Central Chile Contenidos de polifenoles y actividad antioxidante de maqui (Aristotelia chilensis Molina Stuntz durante el desarrollo y maduración de frutos en Chile Central

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    Carolina Fredes

    2012-12-01

    Full Text Available Maqui (Aristotelia chilensis Molina Stuntz, Elaeocarpaceae is a Chilean native species which produces small berries that are mainly collected from the wild. The health benefits of maqui fruit are attributed to their high polyphenol content as well as their wide variety of anthocyanins and flavonols. One of the main factors that affect the polyphenol content in fruit is the maturity stage at harvest. The objective of this study was to determine total phenol and total anthocyanin content and antioxidant activity (by ferric reducing ability of plasma FRAP assay of maqui fruits harvested at different fruit maturity stages from two wild populations located in Central Chile. Each maturity stage was determined by days from fruit set, berry size, and soluble solids. Total phenol content declined while total anthocyanin content increased from the green to light red stage. Nevertheless, both total phenol and anthocyanin content increased from the light red to dark purple stage. The highest anthocyanin content and antioxidant activity was found in the late maturity stage (dark purple. The results show that ripening in maqui fruit can be expected with 1100 growing degree-days (91 d after fruit set in Central Chile. At this moment of harvest, fruits with 18-19 °Brix have the highest anthocyanin content and antioxidant activity (FRAP. This study constitutes the first advances in the understanding of maqui fruit ripening and corresponding antioxidant activity.El maqui (Aristotelia chilensis Molina Stuntz, Elaeocarpaceae es una especie nativa de Chile que produce unas bayas pequeñas que se recolectan principalmente de individuos silvestres. Los beneficios para la salud atribuidos a los frutos de maqui se deben a sus altos contenidos de polifenoles, así como a la gran variedad de antocianos y flavonoles. Uno de los principales factores que afectan el contenido de polifenoles en frutos es el estado de madurez a la cosecha. El objetivo de este estudio fue

  8. Relaciones filogenéticas de la tribu Abrotrichini (Rodentia, Cricetidae): análisis separados y combinados de evidencias morfológicas y moleculares

    OpenAIRE

    Teta, Pablo Vicente

    2013-01-01

    La tribu Abrotrichini (Rodentia, Cricetidae) es uno de los clados de Sigmodontinae más recientemente diagnosticados. Su distribución es fundamentalmente andino-patagónica, con mayor diversidad de especies en el sur de Argentina y Chile. En esta tesis se evaluaron las relaciones filogenéticas entre sus integrantes, utilizando 21 taxones terminales (20 vivientes y uno fósil) y un grupo externo (Wiedomys). Se realizó un análisis cladístico a través de búsquedas exactas y heurísticas de 99 caract...

  9. Los sueños tristes de este amor extraño : Molina encuentra a la Manuela con guión de Puig, Donoso, Ripstein y Sarduy

    OpenAIRE

    Corbatta, Jorgelina

    2015-01-01

    Mi artículo explora la imagen del homosexual travesti como el producto/proyecto final de una construcción cuyas partes están en la figura de Molina en El beso de la mujer araña (l976) de Manuel Puig, la Manuela en El lugar sin límites (l966) de José Donoso y su adaptación al cine por Arturo Ripstein en el film homónimo (l976), en diálogo con textos de Sarduy sobre ambos escritores y, en especial, «Escritura/Travestismo» (Escrito sobre un cuerpo, l969).Tenemos entonces que en el lapso de diez ...

  10. El método retrospectivo en la enseñanza de la Historia : Algunas reflexiones a partir del compromiso docente de Susana Simián de Molinas

    OpenAIRE

    Diburzi, Nélida; Scaraffia, Inés

    2006-01-01

    Susana Simián de Molinas es una docente de larga y destacada trayectoria en la educación dentro de la ciudad de Santa Fe, donde trabajó en instituciones que en la década del 60 y primeros años de los ’70, fueron notables como ámbitos de experimentación pedagógica y didáctica. En la Argentina de entonces corrían tiempos de búsqueda, de innovación, de creatividad en todos los ámbitos; también eran tiempos de indagación y criticidad frente al pasado nacional, al cual se veía como una clave para ...

  11. Caractérisation botanique et agronomique de trois espèces de cucurbites consommées en sauce en Afrique de l'Ouest : Citrullus sp., Cucumeropsis mannii Naudin et Lagenaria siceraria (Molina Standl

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    Zoro Bi I.A.

    2003-01-01

    Full Text Available Botanical and agronomical characterisation of three species of cucurbit consumed as sauce in West Africa: Citrullus sp., Cucumeropsis mannii Naudin and Lagenaria siceraria (Molina Standl. There are in Côte d'Ivoire at least five species of cucurbit incorrectly called ""pistaches"" in town and cultivated at small scale by women for their oleaginous seeds that are a great importance in the sociocultural live of several peoples. Nevertheless, few studies aimed at the improvement of these plants (related notably to taxonomy, genetic resources collecting missions, genetic characterisation, agronomic evaluation, and selection have been carried out. In order to set up a list of reliable traits that should be examined easily during and after collecting missions, we carry out in the present study, for three species (Citrullus sp., Cucumeropsis mannii Naudin and Lagenaria siceraria (Molina Standl a botanic description and an analysis of eleven agronomic traits: 100-seeds weight, germination rate, seedlings emergence time, matured fruit weight, matured fruit decomposition time, mean number of seeds per fruit, seeds shape, fruit diameter, fruit interior cavity diameter, flowering time, and fruiting time. Statistical analyses using nine of these traits showed that the three species can be completely distinguished with six traits whereas the three other traits allowed partial distinction. Low yields have been observed for the three species: 11.41 kg/ha of decorticated seeds for C. mannii, 18.51 kg/ha for Citrullus sp. and 75.14 kg/ha for L. siceraria. From the observed yield components, the possibilities to improve the production of these cucurbits are discussed.

  12. Importance and practices of Egusi crops (Citrullus lanatus (Thunb. Matsum. & Nakai, Cucumeropsis mannii Naudin and Lagenaria siceraria (Molina Standl. cv. 'Aklamkpa' in sociolinguistic areas in Benin

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    Coulibaly O.

    2008-01-01

    Full Text Available Importance et culture de Egusi (Citrullus lanatus (Thunb. Matsum. & Nakai, Cucumeropsis mannii Naudin et Lagenaria siceraria (Molina Standl. cv ' Aklamkpa ' dans les régions sociolinguistiques du Bénin. Les légumes traditionnels africains sont considérés comme potentiellement utiles pour contribuer à la sécurité alimentaire et à la génération de revenu au niveau des communautés locales. Cependant, Egusi (Citrullus lanatus subsp. mucosospermus, Cucumeropsis mannii et Lagenaria siceraria cv. ' Aklamkpa ' a rarement fait l'objet de recherche et de promotion alors que sa culture persiste dans les systèmes de production de plusieurs pays de l'Afrique de l'Ouest. Cette étude met l'accent sur le rôle social des cultures de Egusi et leur importance dans le système de production des groupes sociolinguistiques au Bénin. En 2005, une investigation des systèmes de production et de culture de cinq régions socioculturelles prédominantes indique que la culture de Egusi est classée parmi les dix premières spéculations, selon la perception des ménages interrogés. Le rang attribué aux cultures de Egusi est relatif au genre mais pas à l'âge. Les agriculteurs allouent en moyenne 0,74 ha pour la production de Egusi, avec une différence significative d'une région sociolinguistique à une autre. Dans la communauté Mahi-Fon du centre Bénin, par exemple, nous avons observé des champs de production de Egusi allant jusqu'à 5 ha. L'espèce la plus cultivée est C. lanatus subsp. mucosospermus. Cependant, dans la communauté Adja du sud Bénin, la préférence des agriculteurs est pour L. siceraria cv. ' Aklamkpa '. Egusi se cultive au champ et en jardin de case, soit en association ou en monoculture. C. mannii est généralement cultivée en association et joue un rôle social très important dans les communautés Nagot-Yoruba. Bien que Egusi ne soit pas une culture réservée aux femmes, ces dernières réalisent la plupart des activit

  13. Catalog of type specimens of recent mammals: Rodentia (Myomorpha, Anomaluromorpha, and Hystricomorpha) in the National Museum of Natural History, Smithsonian Institution

    Science.gov (United States)

    Fisher, Robert D.; Ludwig, Craig A.

    2014-01-01

    The type collection of Recent mammals in the Division of Mammals, National Museum of Natural History, Smithsonian Institution, contains 945 specimens bearing names of 931 species-group taxa of Rodentia (Myomorpha, Anomaluromorpha, and Hystricomorpha) as of August 2013. This catalog presents an annotated list of these holdings comprised of 905 holotypes, 16 lectotypes, 8 syntypes (48 specimens), and 2 neotypes. In addition, we include 44 specimens that are part of syntype series that should be in the collection but cannot be found or are now known to be in other collections. One hundred and ten of the names are new since the last type catalog covering these suborders A lectotype for Mus peruvianus Peale, 1848, is newly designated herein. Nine specimens previously reported were subsequently sent to the vertebrate paleontology collection and are not included here. Suborders and families are ordered as in Carleton and Musser; within families, currently recognized genera are arranged alphabetically; within each currently recognized genus, accounts are arranged alphabetically by original published name. Information in each account includes original name and abbreviated citation thereto, current name if other than original, citation for first use of current name combination for the taxon (or new name combination if used herein for the first time), type designation, U.S. National Museum catalog number(s), preparation, age and sex, date of collection and collector, original collector number, type locality, and remarks as appropriate. Digital photographs of each specimen will serve as a condition report and will be attached to each electronic specimen record.

  14. Catalog of type specimens of recent mammals: orders Didelphimorpha through Chiroptera (Excluding Rodentia) in the National Museum of Natural History, Smithsonian Institution

    Science.gov (United States)

    Fisher, Robert D.; Ludwig, Craig A.

    2015-01-01

    The type collection of Recent Mammals in the Division of Mammals, National Museum of Natural History, Smithsonian Institution, contains 820 specimens bearing names of 809 species-group taxa of Didelphimorphia through Chiroptera, excluding Rodentia, as of June 2014. This catalog presents an annotated list of these holdings comprised of 788 holotypes, 26 lectotypes, 11 syntypes (22 specimens), and 4 neotypes. Included are several specimens that should be in the collection but cannot be found or are now known to be in other collections. One hundred and twenty-seven of the names are new since the last type catalog covering these orders, Poole and Schantz (1942). Five specimens reported in Poole and Schantz (1942) were subsequently sent to the Vertebrate Paleontology collection and are not included here. Orders and families are ordered as in Wilson and Reeder (2005); within families, currently recognized genera are arranged alphabetically; within each currently recognized genus, accounts are arranged alphabetically by original published name. Information in each account includes original name and abbreviated citation thereto, current name if other than original, citation for first use of current name combination for the taxon (or new name combination if used herein for the first time), type designation, U.S. National Museum catalog number(s), preparation, age and sex, date of collection and collector, original collector number, type locality, and remarks as appropriate. Digital photographs of each specimen will serve as a condition report and will be attached to each electronic specimen record.

  15. Biologia reprodutiva de Delomys dorsalis (Hensel, 1872 - Rodentia, Sigmodontinae - em área de floresta ombrófila mista, Rio Grande do Sul, Brasil

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    Cristina V. Cademartori

    2005-01-01

    Full Text Available Reproductive Biology of Delomys dorsalis (HENSEL, 1872 -Rodentia, Sigmodontinae- in an area of mixed forest with conifers, at Rio Grande do Sul, Brasil. Delomys dorsalis is restricted to the wet tropical and subtropical forests of southern and southeastern Brazil and northeastern Argentina. The reproductive cycle of this species was studied by the histological examination of the reproductive tracts of animals caught in an area of mixed forest with conifers (29º 23´ S, 50º 23´ W, in southern Brazil, and from observations on a laboratory group of individuals. Fourteen expeditions were carried out from February 1997 to April 1998, during approximately 3 nights, using 140 live traps set on the ground and on branches between 1.5 and 2.0 m high. Reproductively active individuals were observed year round, although winter was marked by a reduction in breeding activity resulting from recruitment. Females showed a post-partum oestrus and a gestation time between 21 and 22 days. The litter size in captivity ranged from two to four, though pregnant females collected from the field had even five embryos. External reproductive features, frequently used as indicatives of the reproductive status of small mammals in ecological studies, were not accurate and underestimated the number of active animals in the population. Some individuals showed a remarkable scansorial ability that should be considered in future studies about population dynamics.

  16. Avaliação da qualidade de amostras comerciais de boldo (Peumus boldus Molina, pata-de-vaca (Bauhinia spp. e ginco (Ginkgo biloba L. Control quality evaluation of commercial samples of boldo (Peumus boldus Molina, pata-de-vaca (Bauhinia spp. and ginkgo (Ginkgo biloba L.

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    J. G. de Melo

    2004-01-01

    Full Text Available O presente trabalho procurou avaliar a qualidade de produtos comercializados à base de boldo, pata-de-vaca e ginco, através dos parâmetros contidos na Farmacopéia Brasileira e na literatura específica. Foram analisadas oito amostras de boldo, nove de pata-de-vaca e sete de ginco, adquiridas em farmácias na cidade do Recife. A metodologia consistiu em avaliar: os rótulos e bulas dos produtos verificando se estavam de acordo com a RDC n o 17 de 24/02/2000 e a portaria 110/97 da ANVISA; realizar análise sensorial; verificar a autenticidade das amostras e sua pureza. Todas as embalagens de boldo, pata-de-vaca e seis de ginco continham erros ou ausência de informações científicas, além da falta de bula. Na verificação de impurezas, todas as de boldo, cinco de pata-de-vaca, e uma amostra de ginco foram reprovadas. Todos os produtos analisados apresentaram alguma irregularidade segundo os códigos oficiais, sendo necessário uma maior intensificação na vigilância de produtos à base de plantas medicinais no Brasil.This study aimed to evaluate the quality of commercial products prepared with boldo (Peumus boldus Molina, pata-de-vaca (Bauhinia spp. and ginkgo (Ginkgo biloba L. by using parameters from the Brazilian Pharmacopoeia and specific literature. Eight samples of "boldo", nine of "pata-de-vaca", and seven of ginkgo were analyzed, all bought from pharmacies in Recife (Pernambuco, Brazil. The methodology consisted in evaluating the products’ labels and instructions to verify their accordance to RDC n o 17 of 02/24/2000 and ANVISA (National Sanitary Surveillance Agency decree 110/97, undertaking a sensorial analysis, and verifying the authenticity and purity of the samples. All of the packages of "boldo" and "pata-de-vaca" and six of the packages of ginkgo contained mistakes or lacked scientific information; instructions were also missing. After analyzing for impurities, all samples of "boldo", five of "pata-de-vaca", and one of

  17. Leishmaniose cutânea na Amazônia: isolamento de Leishmania (Viannia lainsoni do roedor Agouti paca (Rodentia: Dasyproctidae, no estado do Pará, Brasil Cutaneous leishmaniasis in the Amazon Region: isolation of Leishmania (Viannia lainsoni from the rodent Agouti paca (Rodentia: Dasyproctidae in Pará State, Brazil

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    Fernando T. Silveira

    1991-02-01

    Full Text Available Fez-se o registro, pela primeira vez, do isolamento de Leishmania (V. lainsoni de um mamífero silvestre, o roedor Agouti paca (Rodentia: Dasyproctidae, no Estado do Pará, Brasil. As amostras do parasita foram isoladas da pele, aparentemente íntegra, de 3 espécimes desse roedor, capturados no município de Tucuruí (ilha de Tocantins, em área que seria inundada pela formação do lago da hidrelétrica construída naquele município. Nenhum isolamento foi obtido de vísceras de qualquer dos animais. A identificação das amostras de L. (V. lainsoni baseou-se na morfologia de amastigotas e promastigotas, no comportamento da infecção em "hamsters", na análise bioquímica de isoenzimas e, ainda, através de testes com anticorpos monoclonais. A natureza inaparente da infecção nos animais faz supor que o mamífero em questão possa representar um hospedeiro definitivo do parasita na região Amazônica.The isolation of Leishmania (V. lainsoni is recorded for the first time from a wild animal, the rodent Agouti paca (Rodentia: Dasyproctidae, from Pará State, north Brazil. Isolates of the parasite were made from apparently normal skin of 3 specimens of this rodent captured on the Island of Tocantins, in the municipality of Tucuruí, an area subsequently flooded in the formation of the lake associated with the Tucuruí hydroeletric dam. No isolations were made from the viscera. Identification of the parasite was in each case based on morphology of the amastigotes and promastigotes, behavior of the organism in hamsters, isoenzymes profiles and the use of monoclonal antibodies. The inapparent nature of the infection leads us to suggest that the "paca", Agouti paca, represents a primitive host of L. (V. lainsoni in the Amazon Region.

  18. Capture of syncytin-Mar1, a fusogenic endogenous retroviral envelope gene involved in placentation in the Rodentia squirrel-related clade.

    Science.gov (United States)

    Redelsperger, François; Cornelis, Guillaume; Vernochet, Cécile; Tennant, Bud C; Catzeflis, François; Mulot, Baptiste; Heidmann, Odile; Heidmann, Thierry; Dupressoir, Anne

    2014-07-01

    Syncytin genes are fusogenic envelope protein (env) genes of retroviral origin that have been captured for a function in placentation. Within rodents, two such genes have previously been identified in the mouse-related clade, allowing a demonstration of their essential role via knockout mice. Here, we searched for similar genes in a second major clade of the Rodentia order, the squirrel-related clade, taking advantage of the complete sequencing of the ground squirrel Ictidomys tridecemlineatus genome. In silico search for env genes with full coding capacity identified several candidate genes with one displaying placenta-specific expression, as revealed by quantitative reverse transcription-PCR analysis of a large panel of tissues. This gene belongs to a degenerate endogenous retroviral element, with recognizable hallmarks of an integrated provirus. Cloning of the gene in an expression vector for ex vivo cell-cell fusion and pseudotype assays demonstrated fusogenicity on a large panel of mammalian cells. In situ hybridization on placenta sections showed specific expression in domains where trophoblast cells fuse into a syncytiotrophoblast at the fetomaternal interface, consistent with a role in syncytium formation. Finally, we show that the gene is conserved among the tribe Marmotini, thus dating its capture back to about at least 25 million years ago, with evidence for purifying selection and conservation of fusogenic activity. This gene that we named syncytin-Mar1 is distinct from all seven Syncytin genes identified to date in eutherian mammals and is likely to be a major effector of placentation in its related clade. Importance: Syncytin genes are fusogenic envelope genes of retroviral origin, ancestrally captured for a function in placentation. Within rodents, two such genes had been previously identified in the mouse-related clade. Here, in the squirrel-related rodent clade, we identified the envelope gene of an endogenous retrovirus with all the features of a

  19. Differences in richness and composition of gastrointestinal parasites of small rodents (Cricetidae, Rodentia in a continental and insular area of the Atlantic Forest in Santa Catarina state, Brazil Diferenças na composição e na riqueza de parasitas gastrointestinais de pequenos roedores (Cricetidae, Rodentia em uma área continental e uma insular de Floresta Atlântica em Santa Catarina, Brasil

    Directory of Open Access Journals (Sweden)

    VV. Kuhnen

    2012-08-01

    Full Text Available The first and only study on gastrointestinal parasites of wild rodents in the Island of Santa Catarina was done in 1987. The aim of this study was to identify intestinal parasites from wild rodents in Santo Amaro da Imperatriz and Santa Catariana Island, and to compare the richness and composition of the gastrointestinal parasite community of both areas. Rodents were captured with live traps, and feces were screened using the sedimentation method and optical microscopy. The following species of rodents were captured in the two areas: Akodon montensis, Euryoryzomys russatus, Oligoryzomys nigripes and Nectomys squamipes. In Santo Amaro da Impetratriz, prevalent parasites were: A. montensis (51%, E. russatus (62%, O. nigripes (53% and N. squamipes (20%. From the Island of Santa Catarina the rodent prevalence rates were: A. montensis (43%, E. russatus (59%, O. nigripes (30% and N. squamipes (33% and the collected parasites were: Hymenolepis sp., Longistriata sp., Strongyloides sp., Hassalstrongylus sp., Syphacia sp., Trichomonas sp., Ancylostomidae, Trichuridae, Oxyuridae and Eucoccidiorida. The species richness (10.6 ± 0.7 of the endoparasite comunity in the area located on the continent was higher (p Parasitas gastrointestinais de roedores silvestres foram estudados pela primeira vez na Ilha de Santa Catarina em 1987. Desde então, nenhum outro estudo nessa área foi realizado no Estado. O objetivo do presente estudo foi identificar parasitas intestinais de roedores silvestres de Santo Amaro da Imperatriz e da Ilha de Santa Catarina, bem como comparar a composição e a riqueza da comunidade de parasitas gastrointestinais de ambas as áreas. A análise das fezes dos animais capturados foi realizada por meio do método de sedimentação espontânea (HJP e por microscopia óptica. Nas duas áreas, foram capturadas as espécies de roedores Akodon montensis, Euryoryzomys russatus, Oligoryzomys nigripes e Nectomys squamipes. Em Santo Amaro da

  20. Range expansion of Oligoryzomys longicaudatus (Rodentia, Sigmodontinae in Patagonian Chile, and first record of Hantavirus in the region Ampliación del rango de distribución de Oligoryzomys longicaudatus (Rodentia, Sigmodontinae en la Patagonia de Chile y primer registro de Hantavirus en la región

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    SEBASTIÁN BELMAR-LUCERO

    2009-06-01

    Full Text Available At present, 20 species of Oligoryzomys (Rodentia, Sigmodontinae are recognized in the Neotropical region, most of them distinguished by their karyotypes, which fluctuates between 46-70 chromosomes. Two species are currently recognized in Chile, Oligoryzomys longicaudatus (Bennet, 1832; "colilargo" or the long-tailed pygmy rice rat; 2n = 56, which ranges from 27° to approximately 51° S, and O. magellanicus (Bennet, 1836; Magellanic pygmy rice rat; 2n = 54, south of 51° S in the Patagonian region of Chile and Argentina. As part of an ongoing research on the southern Patagonia of Chile, we report the results of small mammal samplings in six localities. We karyotyped 28 specimens and we also sequenced the hypervariable mtDNA region I in 22 individuals, aligning these sequences with an under development phylogeny of O. longicaudatus. We also evaluated the serology and viral charge in all captured specimens to detect the presence of antibodies to Andes virus (ANDV through Strip Immunoblot Assay (SIA, and of viral genome by RT-PCR. The results consistently showed that the karyotype of southern Patagonia specimens was 2n = 56, equal to that of O. longicaudatus, and that individuals from this area do not differentiate phylogenetically from those of the northern range of distribution. In addition, the serology showed the presence of antibodies IgG anti-ANDV and of viral genome in heart, kidney, spleen, and lungs of a single specimen of Oligoryzomys from the locality of Fuerte Bulnes in the Magallanes region. We conclude that all specimens trapped south of 51° S correspond to Oligoryzomys longicaudatus, thus expanding the distribution of this specie! from 51° to at least 55° S. The results also extended the disiribution of the Andes strain of Hantavirus to southernmost Patagonia.Actualmente se reconocen 20 especies de Oligoryzomys (Rodentia, Sigmodontinae en la región Neotropical, la mayoría de ellas distinguidas por sus cariotipos, los que fluct

  1. PLAN DE ECOEFICIENCIA EN EL USO DEL AGUA POTABLE Y ANÁLISIS DE SU CALIDAD EN LAS ÁREAS ACADÉMICAS Y ADMINISTRATIVAS DE LA UNIVERSIDAD NACIONAL AGRARIA LA MOLINA

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    Orlando Advíncula Zeballos

    2014-01-01

    Full Text Available Se realizó un estudio de línea base para establecer un plan de Ecoeficiencia para el uso del Agua potable en las instalaciones de las áreas académicas y administrativas de la Universidad Nacional Agraria la Molina (UNALM, entre Se tiembre del 2011 y Agos to del año 2012, de acuerdo a la metodología propuesta por el Ministerio del Ambiente (MINAM en el 2009, como consecuencia de la promulgación de la Ley N° 29289 que determina que todas las instituciones del Estado deben adoptar medidas de ecoeficiencia. En este sentido, el presente estudio se elaboró con el objetivo de que la UNALM esté a la par con otras instituciones que ya cuentan con una línea base, la cual incluye un inventario de los equipos sanitarios, la identificación de prácticas inadecuadas y la evaluación del consumo de agua en las áreas administrativas y académicas. Durante la etapa de formulación del plan de ecoeficiencia se tomó las conclusiones de la línea base para identificar las medidas a adoptar en la minimización del consumo del agua. Se encontró que la UNALM posee equipos sanitarios antiguos con elevados consumos de agua y en mal estado; siendo el sector de los estudiantes el más crítico, con un 21% de equipos (inodoros y urinarios en mal estado. Mediante la división del consumo de agua y el promedio de personas en las instalaciones se obtuvo el consumo diario de agua promedio per cápita para los profesores fue de 14.38 litros/persona y para el personal administrativo de la Biblioteca Agrícola Nacional (BAN de 9.89 litros/persona, valores que estuvieron por debajo del valor establecido por el MINAM para instituciones públicas (82.1 litros/persona. Los análisis físico-químicos y microbiológicos realizados al agua utilizada en los servicios higiénicos de los alumnos, facultades y el Rectorado, han determinando que no cumplen con los parámetros exigidos en la Ley de Aguas para Consumo Humano. En base al diagnóstico realizado con la informaci

  2. 与瓠瓜品系'J083'白粉病抗性基因连锁的SCAR分子标记%SCAR marker linked to resistance gene of powdery mildew in bottle gourd [Lagenaria siceraria (Molina) Standl.] breeding line J083

    Institute of Scientific and Technical Information of China (English)

    王玲平; 吴晓花; 汪宝根; 徐沛; 李国景

    2011-01-01

    The genetic analysis of bottle gourd [Lagenaria siceraria (Molina) Standl.] resistance to powdery mildew was evaluated with a highly resistant breeding line J083 and a highly susceptible breeding line J73 and their F1, F2 populations. The results showed that the resistance to powdery mildew in J083 was controlled by a single recessive gene. From 100 amplified fragment length polymorphism (AFLP) primer pair combinations, a pair of stable polymorphic AFLP markers (E-ATG/M-CTC), 105 bp in size was obtained. The AFLP fragment was then converted to a sequence-characterized amplified region (SCAR) marker, named as GPDSATG/CTC75. This SCAR marker could be used effectively for molecular markerassisted selection (MAS) in breeding programs to develop bottle gourd cultivars resistance to powdery mildew.%以瓠瓜抗白粉病品系'J083'和感病品系'J73'及它们的F1代和F2代分离群体为试验材料,经接种鉴定和抗性遗传规律分析表明:瓠瓜品系'J083'对白粉病的抗性受单隐性基因控制;从100对扩增片段长度多态性(AFLP)引物组合中获得稳定的多态性引物组合1对,即E-ATG/M-CTC;经回收、测序,特异片段全长为105 bp,并成功将其转化为序列特征性扩增区域(SCAR)标记;经连锁分析,该SCAR标记与白粉病抗性基因的连锁距离为9.6 cM,将其命名为GPDSATG/CTC75.此标记可用于瓠瓜抗白粉病品种的辅助选育.

  3. Chromosomal evolution in Rattini (Muridae, Rodentia)

    OpenAIRE

    Badenhorst, Daleen; Dobigny, Gauthier; Adega, Filomena; Chaves, Raquel; O’Brien, Patricia C. M.; Ferguson-Smith, Malcolm A; Waters, Paul D.; Robinson, Terence J

    2011-01-01

    The Rattini (Muridae, Murinae) includes the biologically important model species Rattus norvegicus (RNO) and represents a group of rodents that are of clinical, agricultural and epidemiological importance. We present a comparative molecular cytogenetic investigation of ten Rattini species representative of the genera Maxomys, Leopoldamys, Niviventer, Berylmys, Bandicota and Rattus using chromosome banding, cross-species painting (Zoo-fluorescent in situ hybridization or FISH) and BAC-FISH map...

  4. [Ectoparasites of small wild mammals from the adjacent areas of Itapecuru River and Environmental Preservation Area of Inhamum, state of Maranhão, Brazil].

    Science.gov (United States)

    Reis, Francineto S; Barros, Maria Claudene; Fraga, Elmary Da C; Da Penha, Tatiane A; Teixeira, Whaubytfran C; Dos Santos, Ana Clara G; Guerra, Rita De Maria S N De C

    2008-09-01

    During fauna studies, thirty-six wild mammals were collected in adjacent areas of Itapecuru River and Environmental Preservation area of Inhamum, state of Maranhão, Brazil. They were sampled for ectoparasites. The following specimens of the order Rodentia and its respective ectoparasites were identified: Akodon sp. (Androlaelaps sp. and Laelaps sp.), Oecomys sp. (Androlaelaps sp. and Amblyomma cajennense), Oligoryzomys sp. (Androlaelaps sp. Laelaps sp. and Amblyomma sp.) e Oryzomys megacephalus (A. cajennense). In Calomys callosus no ectoparasite was found. It was observed infestation in the order Didelphimorphia as follows: Didelphis marsupialis (Androlaelaps sp., Laelaps sp. and larvae of Diptera Cyclorrhapha); Gracilinanus sp. (Laelaps sp. and larvae of Diptera Cyclorrhapha), Monodelphis domestica (Poplygenis (Polygenis)), Cummingsia sp., Amblyomma sp. and Androlaelaps sp.). Marmosa sp. e Thylamis sp. had no ectoparasites. From the captured hosts 56% were infested, 82% and 44% rodents and marsupials, respectively. Mites from the family Laelapidae presented the great diversity of hosts and genus. PMID:20059819

  5. SPECIES DIVERSITY OF LONG GOURD LAGENARIA SICERARIA (MOLINA STANDL

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    Tsatsenko L. V.

    2014-01-01

    Full Text Available The issues of international spread of fruits of long gourd lagenaria and the introduction of it in culture are considered in the article. We have shown how to use it as a vegetable crop and considered varietal diversity of this species. The biological characteristics of lagenaria cultivation as vegetable plants, including peculiarities of the reproductive system have been marked. We have also considered the issues of cultivation and distribution of long gourd lagenaria (zycca for food

  6. Land fauna composition of small mammals of a fragment of Atlantic Forest in the State of Sao Paulo, Brazil

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    Darci Moraes Barros-Battesti

    2000-03-01

    Full Text Available The Atlantic Forest small mammal land fauna, except bats, and the abiotic factors that might have an influence on its composition, were studied in the Itapevi County, State of Sao Paulo, a forested region, partly altered by antropic action, from January, 1995 to June, 1996. The trapping effort consisted of 2,888 trap-nights, resulting in a 4.6% trapping success and consisted of monthly trappings, for five consecutive days. During this period, 134 specimens were captured, of which 46.3% were Didelphimorphia and 53.7% were Rodentia. Eleven species were registered: two Didelphimorphia: Didelphis marsupialis (Linnaeus, 1758 and Marmosops incanus (Lund, 1841, and nine Rodentia: Akodon cursor (Winge, 1887, Bolomys lasiurus (Lund, 1841, Oxymycterus hispidus Pictet, 1843, Oxymycterus nasutus (Waterhouse, 1837, Oligoryzomys nigripes (Olfers, 1818, Oryzomys angouya (Fischer, 1814, Raltus norvegicus (Berkenhout, 1769, Euryzygomatomys spinosus (G. Fischer, 1814 and Cavia aperea Erxleben, 1777. The relative density indices were correlated with meteorological data by Spearman and Pearson coefficients. For marsupials these correlations were not significant. For rodents, the correlations were significant and directly related to lower temperature and rainfall indices (p<0.05. During the dry season the occurrence of small mammals was 50% greater than during the wet season, probably due to foraging strategies in the studied fragment of Atlantic Forest.

  7. Late Pleistocene echimyid rodents (Rodentia, Hystricognathi) from northern Brazil.

    Science.gov (United States)

    Ferreira, Thais M F; Olivares, Adriana Itati; Kerber, Leonardo; Dutra, Rodrigo P; Avilla, Leonardo S

    2016-06-01

    Echimyidae (spiny rats, tree rats and the coypu) is the most diverse family of extant South American hystricognath rodents (caviomorphs). Today, they live in tropical forests (Amazonian, coastal and Andean forests), occasionally in more open xeric habitats in the Cerrado and Caatinga of northern South America, and open areas across the southern portion of the continent (Myocastor). The Quaternary fossil record of this family remains poorly studied. Here, we describe the fossil echimyids found in karst deposits from southern Tocantins, northern Brazil. The analyzed specimens are assigned to Thrichomys sp., Makalata cf. didelphoides and Proechimys sp. This is the first time that a fossil of Makalata is reported. The Pleistocene record of echimyids from this area is represented by fragmentary remains, which hinders their determination at specific levels. The data reported here contributes to the understanding of the ancient diversity of rodents of this region, evidenced until now in other groups, such as the artiodactyls, cingulates, carnivores, marsupials, and squamate reptiles. PMID:27276377

  8. Children's Attitudes towards Animals: Evidence from the RODENTIA Project

    Science.gov (United States)

    Fonseca, Maria Joao; Franco, Nuno H.; Brosseron, Francis; Tavares, Fernando; Olsson, I. Anna S.; Borlido-Santos, Julio

    2011-01-01

    The instructional use of animals is a popular strategy to engage students with science, enhance their motivation, and promote values such as respect, tolerance, and empathy for all living beings. Although these beneficial outcomes are widely acknowledged, research has not provided reliable indicators of their efficiency. Therefore, it is essential…

  9. Cytogenetic investigations in Sciurus anomalus from Turkish Thrace (Rodentia: Sciuridae)

    Czech Academy of Sciences Publication Activity Database

    Arslan, A.; Zima, Jan

    2012-01-01

    Roč. 64, č. 4 (2012), s. 421-426. ISSN 0324-0770 Institutional support: RVO:68081766 Keywords : karyotype * C-banding * Ag-NOR staining * Caucasian squirrel * Turkey Subject RIV: EG - Zoology Impact factor: 0.309, year: 2012 http://www.acta- zoologica -bulgarica.eu/downloads/acta- zoologica -bulgarica/2012/64-4-421-426.pdf

  10. Dietary Ecology of Murinae (Muridae, Rodentia): A Geometric Morphometric Approach

    OpenAIRE

    Ana Rosa Gómez Cano; Manuel Hernández Fernández; M Ángeles Alvarez-Sierra

    2013-01-01

    Murine rodents represent a highly diverse group, which displays great ecological versatility. In the present paper we analyse the relationship between dental morphology, on one hand, using geometric morphometrics based upon the outline of first upper molar and the dietary preference of extant murine genera, on the other. This ecomorphological study of extant murine rodents demonstrates that dietary groups can be distinguished with the use of a quantitative geometric morphometric approach base...

  11. Dietary ecology of Murinae (Muridae, Rodentia: a geometric morphometric approach.

    Directory of Open Access Journals (Sweden)

    Ana Rosa Gómez Cano

    Full Text Available Murine rodents represent a highly diverse group, which displays great ecological versatility. In the present paper we analyse the relationship between dental morphology, on one hand, using geometric morphometrics based upon the outline of first upper molar and the dietary preference of extant murine genera, on the other. This ecomorphological study of extant murine rodents demonstrates that dietary groups can be distinguished with the use of a quantitative geometric morphometric approach based on first upper molar outline. A discriminant analysis of the geometric morphometric variables of the first upper molars enables us to infer the dietary preferences of extinct murine genera from the Iberian Peninsula. Most of the extinct genera were omnivore; only Stephanomys showed a pattern of dental morphology alike that of the herbivore genera.

  12. First report of partial albinism in genus Thrichomys (Rodentia: Echimyidae)

    OpenAIRE

    2014-01-01

    Reports about albinism in rodents are common. In the family Echimyidae, however, albinism is very rare. This is the second case of coat color variation reported within Echimyidae and the first for the genus Thrichomys. The pelages of Thrichomys pachyurus individuals with normal and variant coat color were observed under a fluorescent artificial light and were examined with a stereoscopic microscope. The descriptions of pelage color were based on the book "Color Standards and Color Nomenclatur...

  13. First report of partial albinism in genus Thrichomys (Rodentia: Echimyidae

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    Antonio Carlos da S.A. Neves

    2014-01-01

    Full Text Available Reports about albinism in rodents are common. In the family Echimyidae, however, albinism is very rare. This is the second case of coat color variation reported within Echimyidae and the first for the genus Thrichomys. The pelages of Thrichomys pachyurus individuals with normal and variant coat color were observed under a fluorescent artificial light and were examined with a stereoscopic microscope. The descriptions of pelage color were based on the book "Color Standards and Color Nomenclature". The predominantly white pattern of coat color in individuals of T. pachyurus suggests a partial albinism caused by delay in migration time of melanoblasts from neural crest to epidermis. The habitat of T. pachyurus has a heavy vegetative cover, which offers natural protection against predators and high-quality nutrition.

  14. Reestablecimiento de Choromytilus chorus (Molina, 1782 (Bivalvia: Mytilidae en el norte de Chile Reestablishment of Choromytilus chorus (Molina, 1782 (Bivalvia: Mytilidae in northern Chile

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    Miguel Avendaño

    2011-07-01

    Full Text Available Hasta fines del siglo pasado no existían registros de la presencia de Choromytilus chorus al norte de los 23°S, pese a antecedentes que señalaban su existencia en épocas pasadas. Ciertos cambios relacionados con las masas de agua costeras de esta zona, habrían generado la ausencia o escasez que presentaba el entorno costero actual. Sin embargo, hace una década atrás, su presencia en el norte de Chile, comienza a tener connotación pesquera. En el presente trabajo se confirma su reestablecimiento en las regiones de Antofagasta y Tarapacá, mediante prospecciones realizadas en seis lugares donde se registró su presencia, así como mediante la captación de semilla en colectores suspendidos. Se indica interacción con Aulacomya ater, a la cual ha desplazado a estratos más profundos, mientras que su reestablecimiento, iniciado en las regiones de Atacama y Antofagasta, y que se amplió posteriormente a la región de Tarapacá; permite postular la hipótesis que la dinámica de estos bancos, respondería a una estructura de metapoblación, dado el sistema de corrientes y vientos que predominan en la zona norte, permitiendo la advección larval de poblaciones existentes en la región de Coquimbo.Despite indications of its presence in past ages, until the end of the last century, no records showed Choromytilus chorus north of 23°S. Certain changes related to coastal water masses in the zone could be responsible for the present lack or scarcity of this species in the coastal area. However, a decade ago, this species appeared in northern Chile in the context of fisheries. This study confirms the re-establishment of C. chorus in the Antofagasta and Tarapaca regions through surveys at six sites where the species had been registered and spat collection using suspended collectors. This species has interacted with Aulacomya ater, displacing it towards deeper habitats. The re-establishment of C. chorus began in the Atacama and Antofagasta regions and later extended to the Tarapaca region. Thus, we hypothesize that the dynamics of these shoals correspond to a metapopulation structure that has allowed larval advection, given the current system and predominant winds in the northern zone, from populations existing in the Coquimbo region.

  15. The adhesive protein of Choromytilus chorus (Molina, 1782) and Aulacomya ater (Molina, 1782): a proline-rich and a glycine-rich polyphenolic protein.

    Science.gov (United States)

    Burzio, L A; Saéz, C; Pardo, J; Waite, J H; Burzio, L O

    2000-06-15

    The adhesive polyphenolic proteins from Aulacomya ater and Choromytilus chorus with apparent molecular masses of 135000 and 105000, respectively, were digested with trypsin and the peptides produced resolved by reversed phase liquid chromatography. About 5 and 12 major peptides were obtained from the protein of A. ater and C. chorus, respectively. The major peptides were purified by reverse-phase chromatography and the amino acid sequence indicates that both polyphenolic proteins consisted of repeated sequence motifs in their primary structure. The major peptides of A. ater contain seven amino acids corresponding to the consensus sequence AGYGGXK, whereas the tyrosine was always found as 3, 4-dihydroxyphenylalanine (Dopa), the X residue in position 6 was either valine, leucine or isoleucine, and the carboxy terminal was either lysine or hydroxylysine. On the other hand, the major peptides of C. chorus ranged in size from 6 to 21 amino acids and the majority correspond to the consensus sequence AKPSKYPTGYKPPVK. Both proteins differ markedly in the sequence of their tryptic peptides, but they share the common characteristics of other adhesive proteins in having a tandem sequence repeat in their primary structure. PMID:11004549

  16. Reestablecimiento de Choromytilus chorus (Molina, 1782) (Bivalvia: Mytilidae) en el norte de Chile Reestablishment of Choromytilus chorus (Molina, 1782) (Bivalvia: Mytilidae) in northern Chile

    OpenAIRE

    Miguel Avendaño; Marcela Cantillánez

    2011-01-01

    Hasta fines del siglo pasado no existían registros de la presencia de Choromytilus chorus al norte de los 23°S, pese a antecedentes que señalaban su existencia en épocas pasadas. Ciertos cambios relacionados con las masas de agua costeras de esta zona, habrían generado la ausencia o escasez que presentaba el entorno costero actual. Sin embargo, hace una década atrás, su presencia en el norte de Chile, comienza a tener connotación pesquera. En el presente trabajo se confirma su reestablecimien...

  17. Branch whorls of juvenile Araucaria araucana (Molina Koch: are they formed annually? Los verticilos de juveniles de Araucaria araucana (Molina Koch: ¿son formados anualmente?

    Directory of Open Access Journals (Sweden)

    CHRISTOPHER H. LUSK

    2000-09-01

    Full Text Available The growth of Araucaria araucana, like that of many other conifers, is characterised by the production of a monopodial stem with branch whorls. However, the periodicity of whorl formation in this species has not been subjected to systematic study. We used growth ring counts to determine the frequency of whorl formation in sun- and shade-grown juvenile A. araucana in a montane forest in the Chilean coast range. Whorls were not annual in any of the 35 individuals studied, growth rings outnumbering whorls by a factor of 1.8 to 3.9. The mean interval between successive whorls was significantly shorter in sun-grown (2.1 yrs whorl -1 than in shade-grown trees (2.6 yrs whorl-1, suggesting a relationship with plant carbon balance. Mean distance between whorls was also sensitive to light environment. The overall result of this effect of light environment on both whorl spacing and production rate was that mean height growth rates were > 50% higher in sun-grown trees (169 mm yr-1 than in shade-grown individuals (111 mm yr-1. Despite the non-annual nature of whorls in the study population, whorl counts may have some potential as a non-invasive method of age estimation in juvenile A. araucana. In both shade- and sun-grown subpopulations, whorl number was a better predictor of stem age than were stem diameter or heightEl crecimiento de A. araucana, al igual que el de muchas otras coníferas, se caracteriza por la producción de un fuste monopódico y ramas en verticilos. Sin embargo, en esta especie, no se ha investigado sistemáticamente la periodicidad de la formación de los verticilos. Esta nota documenta el conteo de anillos de crecimiento para determinar la frecuencia de formación de verticilos, en árboles juveniles de A. araucana. Se muestrearon 17 árboles en ambientes soleados y otros 18 bajo sombra, en un bosque montano de la Cordillera de la Costa, Chile. Ninguno de los 35 individuos estudiados mostró evidencias de formación anual de verticilos, puesto que el número de anillos de crecimiento excedió al número de verticilos en 1,8 a 3,9 veces. El intervalo promedio entre la producción de verticilos sucesivos fue significativamente menor en individuos expuestos a pleno sol (2,1 años verticilo-1 que en aquellos que crecieron bajo sombra (2,6 años verticilo-1, sugiriendo cierta relación con el balance de carbono de la planta. La distancia promedio entre verticilos también se mostró sensible al ambiente lumínico. El resultado de este efecto del ambiente lumínico sobre tanto la tasa de producción de verticilos, como la distancia entre éstos, fue que la tasa promedio de crecimiento en altura de los individuos soleados (169 mm año-1 excedió en > 50% a la de los individuos sombreados (111 mm año-1. A pesar de la naturaleza no anual de los verticilos en la población estudiada, los recuentos de verticilos pueden tener potencial como un método no invasivo de estimación de edad para juveniles de A. araucana. Tanto dentro de las subpoblaciones soleadas como sombreadas, el número de verticilos fue mejor indicador de la edad que el diámetro o la altura del fuste

  18. Chinchilla lanigera (Molina 1782 and C. chinchilla (Lichtenstein 1830: review of their distribution and new findings

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    Valladares, P.

    2014-06-01

    Full Text Available Millions of Chinchilla chinchilla and C. lanigera were killed during the early twentieth century and they were nearly hunted to extinction. In order to establish the current range of distribution of these two wild species and to localize possible new colonies, we used the available scientific literature, technical reports, information from residents, and live trapping methods. Both species are ‘critically endangered’ since their current distribution is highly fragmented and all recognized colonies are small and isolated. We report a small new wild colony of C. lanigera in the Atacama region, Chile.

  19. Electrophoretic mobility as a tool to separate immune adjuvant saponins from Quillaja saponaria Molina.

    Science.gov (United States)

    Gilabert-Oriol, Roger; Weng, Alexander; von Mallinckrodt, Benedicta; Stöshel, Anja; Nissi, Linda; Melzig, Matthias F; Fuchs, Hendrik; Thakur, Mayank

    2015-06-20

    Quillaja saponins are used as adjuvants in animal vaccines but their application in human vaccination is still under investigation. Isolation and characterization of adjuvant saponins is very tedious. Furthermore, standardization of Quillaja saponins is critical pertaining to its application in humans. In this study, a convenient method based on agarose gel electrophoresis was developed for the separation of Quillaja saponins. Six different commercial Quillaja saponins were segregated by size/charge into numerous fractions. Each of the fractions was characterized by ESI-TOF-MS spectroscopy and thin layer chromatography. Real-time impedance-based monitoring and red blood cell lysis assay were used to evaluate cytotoxicity and hemolytic activities respectively. Two specific regions in the agarose gel (delimited by specific relative electrophoretic mobility values) were identified and characterized by exclusive migration of acylated saponins known to possess immune adjuvant properties (0.18-0.58), and cytotoxic and hemolytic saponins (0.18-0.94). In vivo experiments in mice with the isolated fractions for evaluation of adjuvant activity also correlated with the relative electrophoretic mobility. In addition to the separation of specific Quillaja saponins with adjuvant effects as a pre-purification step to HPLC, agarose gel electrophoresis stands out as a new method for rapid screening, separation and quality control of saponins. PMID:25839418

  20. Tirso de Molina's comedy «Las Quinas de Portugal» and Salazar's censorship

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    António Apolinário Lourenço

    2015-11-01

    Full Text Available In March 1968, Portuguese censors stopped the broadcast on public television —which was the only television network at the time— of Tirso de Molina’s comedy Las quinas de Portugal. This play stages the most important creation myth for the Portuguese nation: on the eve of the battle of Ourique, a crucified Christ appeared and offered Count Afonso Henriques his five holy wounds as a symbol for the Portuguese coat of arms. In this article, I intend to understand the ethical and political reasoning of the censors who read this play, written by one of the most important playwrights of the Spanish Golden Age

  1. HEPATOPROTECTIVE ACTIVITY OF LAGENARIA SICERARIA (MOLINA STANDLEY FRUITS AGAINST PARACETAMOL INDUCED HAPATOTOXICITY IN MICE

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    C.V. Panchal*, Jyotiram A. Sawale , B. N. Poul and K.R. Khandelwal

    2013-01-01

    Full Text Available Aim and Objectives: Fruit juice of Lagenaria siceraria (LS belonging to Cucurbitaceae family, has been used traditionally to treat jaundice and to cure certain liver disorders. Antioxidants are well known for their hepatoprotective effect and in curing liver disorders. In this study, hepatoprotective and antioxidant effects of fruits were investigated. Materials and Methods: The coarsely powdered plant material was extracted successively with petroleum ether (PE and ethanol (ETH using soxhlet. PE & ETH, were then evaluated for their hepatoprotective and antioxidant activities against paracetamol induced hepatotoxicity and different in vitro assays respectively. Hepatoprotective activity was evaluated at three oral dose levels of 250, 500 and 1000 mg/kg. Results: Both extracts, PE and ETH exhibited a significant hepatoprotective and antioxidant activity. The ETH (1000 mg/kg showed maximum hepato-protection. ETH also showed better antioxidant activity, in comparison to PE, in all the antioxidant assays. Conclusions: ETH has shown better hepatoprotective activity than PE, which could be due to its better antioxidant activity. Moreover, better activity can also be attributed to the presence of phenolic compounds as these were absent in the PE.

  2. Antioxidant activity of an unusual 3-hydroxyindole derivative isolated from fruits of Aristotelia chilensis (Molina) Stuntz.

    Science.gov (United States)

    Céspedes, Carlos L; Alarcon, Julio; Valdez-Morales, Maribel; Paredes-López, Octavio

    2009-01-01

    3-Hydroxyindole was isolated from the EtOH extract of fruits of Aristotelia chilensis during analyses by HPLC/MS and GC/MS and identified by its mass fragmentation pattern and spectrophotometric data. Additionally, this extract showed an interesting antioxidant activity in DPPH, crocin and TBARS assays. The presence of this type of compound in this fruit species permits us to explain its strong antioxidant activity and its important part in the biosynthetic pathway of phenolic and alkaloid compounds in this plant. Therefore this compound could be useful for the development of future nutraceutical and antioxidant protective agents. PMID:19957448

  3. Morfología del aparato reproductor del picoroco Austromegabalanus psittacus (Molina, 1782 (Cirripedia, Balanidae

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    Catalina Contreras

    2015-07-01

    Full Text Available Descripción morfológica de las estructuras reproductivas de Austromegabalanus psittacus en dos periodos de maduración sexual. Se determinó que es un organismo hermafrodita que transfiere sus espermatozoides mediante un órgano intromitente o pene. El aparato reproductor masculino consta de testículos organizados en acinos que se distribuyen arboriformemente, dos conductos deferentes que se unen en la base del pene para formar el conducto eyaculador. El aparato reproductor femenino consiste principalmente en un ovario sacular que rodea al resto del cuerpo y se encuentra adherido a través de musculatura a la base de las placas operculares. Se organiza internamente en sacos acinares elongados que contienen ovogonias y ovocitos previtelogénicos adheridos a su pared y vitelogénicos y maduros libres dentro del lumen. Se observaron diferencias notorias en los ovarios entre los organismos recolectados en septiembre y octubre. En septiembre presentaron coloración amarillenta y en su interior se encontraron dos estructuras compactas denominadas lamelas ovígeras en cuyo interior se observaron ovocitos fecundados, embriones en diferentes estados de desarrollo y nauplius libres en la cavidad corporal; en octubre los ovarios son gruesos, blanquecinos y con gran cantidad de fluido lechoso en su interior.

  4. Murta leaves (Ugni molinae Turcz) as a source of antioxidant polyphenols.

    Science.gov (United States)

    Rubilar, Mónica; Pinelo, Manuel; Ihl, Mónica; Scheuermann, Erik; Sineiro, Jorge; Nuñez, María José

    2006-01-11

    Extracts from Murta leaves are used by Chilean natives for their benefits on health and cosmetic properties, which are mainly due to the presence of polyphenolic compounds. Extraction of such compounds is strongly influenced by several variables, the effects of which are studied in this work; the antioxidant power of the resulting extracts was measured by two different methods [2,2-diphenyl-1-picrylhydrazyl (DPPH) and thiobarbituric acid reactive substances (TBARS)]. On the whole, maximum values of polyphenolic yields and antiradical power (DPPH method) were attained at 50 degrees C (from 25 to 50 degrees C) and a solvent-to-solid ratio (v/w) of 15:1 (15:1-25:1). The solvents assayed were ethanol, methanol, and water. The highest polyphenolic yield values (2.6% expressed as gallic acid) were reached with methanol, whereas maximum EC50 was attained by the ethanol extract (0.121 mol gallic acid/mol DPPH). Contact time was shown to have only a slight influence in alcoholic extraction, while in water a remarkable effect of increasing contact times (30-90 min) was observed. Just water was the solvent that offered the best result when the antioxidant power was measured by the TBARS method. High-performance liquid chromatography-mass spectrometry analysis revealed the presence of polyphenols, basically flavonols and flavanols, sometimes glycosilated; myricetin and quercetin glycosides were detected in all extracts, whereas epicatechin was present in alcoholic extracts and gallic acid was only present in water. PMID:16390178

  5. Recuerdo e imaginación en Beltenebros de Antonio Muñoz Molina

    DEFF Research Database (Denmark)

    Hansen, Hans Lauge

    Nueva narrativa, novela, sujeto, búsqueda de identidad, den nye spanske roman, subjekt, identitet......Nueva narrativa, novela, sujeto, búsqueda de identidad, den nye spanske roman, subjekt, identitet...

  6. LAS CIENCIAS SOCIALES EN LA UCT EN 1971, POR VÍCTOR RAVIOLA MOLINA

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    Victor Raviola Molina

    2013-07-01

    Full Text Available Hasta el golpe de Estado, nuestro país se perfilaba como una «cosmópolis intelectual», exhibiendo condiciones como estabilidad política, modernización del sistema educacional universitario y gestión de redes internacionales tejidas desde algunas universidades. Esto propicia el florecimiento de centros académicos de investigación y formación, constituyendo un polo para intelectuales latinoamericanos, europeos y americanos que se insertan en estas instituciones con el objetivo de fortalecer dichas iniciativas, y analizar los procesos sociopolíticos que estaban teniendo lugar. En este contexto, y aun cuando en una condición periférica que implica sobre todo precariedad de recursos, las instituciones regionales buscaron afianzar su posición, se pensaron no sólo como instancias formativas, sino también de investigación, contribuyendo a través de la ciencia al desarrollo en el plano local.En la década de los setenta, la sede regional de la Pontificia Universidad Católica de Chile, hoy Universidad Católica de Temuco, abría un panorama auspicioso para el desarrollo de las ciencias sociales. Desde el Centro de Estudios de la Realidad Regional (CERER, y con el propósito de formar investigadores locales, se da apertura en 1971 a un programa de especialización denominado «Carrera de Investigadores en Ciencias Sociales», el que fue antesala de la fundación de la carrera de Licenciatura en Antropología en 1973, la tercera en el país y la segunda regional.Consideramos relevante este discurso pronunciado por el entonces director de Sede, don Víctor Raviola, en la inauguración anual de actividades académicas, en tanto deja testimonio de un estilo de universidad, a saber: regionalista, comprometida con la investigación científica aplicada, y vinculada con el medio local. Las palabras del profesor Raviola resultan señeras respecto del desarrollo de las ciencias sociales a nivel regional, proyecto que decae paulatinamente a partir de 1973 y que concluye con el cierre de la carrera de Antropología en 1978. En 1970 se da inicio a un proyecto que quedará inconcluso y que sólo volverá a cobrar fuerza en la década de los noventa con la apertura de las carreras de Antropología y Trabajo Social y la posterior creación de la Facultad de Ciencias Sociales en el primer decenio del siglo XXI.Agradecemos a Gloria Vergara Segura la transcripción de este texto (Héctor Mora Nawrath.

  7. NETSUKE AS A RESOURCE OF INFORMATION ABOUT SPECIES DIVERSITY OF LAGENARIA SICERARIA (MOLINA STANDL

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    Tsatsenko L. V.

    2014-02-01

    Full Text Available In the article, with a descriptive method and a method of analysis and synthesis, we have conducted a study of species diversity of Lagenaria on the basis of a miniature sculpture of netsuke. In Japan and China, in the period from the 17th to the 20th century, the most common was 9 species. The biological peculiarities of some rare species of lagenaria has been described

  8. Molecular phylogenies, chromosomes and dispersion in Brazilian akodontines (Rodentia, Sigmodontinae Filogenia molecular, cromossomos e dispersão em akodontinos do Brasil (Rodentia, Sigmodontinae

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    Maria Claudene Barros

    2009-12-01

    Full Text Available A new molecular phylogeny for akodontine rodents from Brazil was proposed. The phylogenetic tree was enriched with the area of occurrence and with information on the karyotype of the samples. Based on this enriched tree, and with a described methodology, hypotheses were proposed on the karyotype and area of occurrence of the ancestors of each Clade. Thus it was possible to discuss hypotheses on chromosome evolution of the group, and on dispersion events from the "area of original differentiation" of akodontines in the Andes. Chromosome evolution started with high diploid numbers (2n=52 and showed a tendency to reduction (until 2n=14 in more recent clades. Independent side-branches of the tree showed 2n reduction and in one case the 2n increased. At least four dispersion events from the Andes down to South-eastern Brazil were proposed. The results should suggest the direction of new studies on comparative karyology.Uma nova filogenia molecular para roedores akodontinos do Brasil é proposta. A árvore filogenética foi enriquecida com a área de ocorrência e com informações sobre o cariótipo das amostras. Baseado nisto, e com a metodologia descrita, foram propostas hipóteses sobre as características do cariótipo e sobre a área de ocorrência dos ancestrais de cada clado. Assim, foi possível discutir hipóteses sobre evolução cromossômica do grupo, e sobre eventos de dispersão a partir da área de diferenciação original dos akodontinos nos Andes. A evolução cromossômica começou com números diplóides altos (2n=52 e mostrou uma tendência a redução (até 2n=14 em clados mais recentes. Ramos independentes da árvore mostraram redução do 2n e num caso aumentou o numero diplóide. Foram propostos pelo menos quatro eventos de dispersão dos Andes até o Brasil Sul-Oriental. Os resultados indicam a direção de novos estudos em cariologia comparada.

  9. VARIACIÓN CARIOLÓGICA EN DIFERENTES FENOTIPOS DE Sciurus granatensis (RODENTIA, SCIURIDAE Karyologic Variation in Different Phenotypes of Sciurus granatensis (Rodentia, Sciuridae

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    CAROLINA ARANGO

    Full Text Available Siete ejemplares de Sciurus granatensis (ardilla colombiana de diferentes fenotipos según color, rescatadas del tráfico ilegal de fauna silvestre de Colombia fueron estudiadas. Mediante técnicas convencionales de bandeo cromosómico G, C, Q, R y NOR se estableció su cariotipo 2n=42. Se encontraron tres cariomorfos de acuerdo al Número Fundamental (NF y características propias de cada uno de los complementos ocasionadas por distintos rearreglos cromosómicos, lo cual sugiere que S. granatensis es un complejo de especies. No se observó relación entre cariotipo y fenotipo. La variación en el color del pelaje se debe probablemente a las condiciones ambientales.Seven specimens of Sciurus granatensis (redtailed squirrel rescued from illegal fauna traffic in Colombia were studied; they had different phenotypes according to colour. G, C, Q, R and NOR chromosome banding was used, being found a 2n=42 diploid number for the Sciurus granatensis Colombian squirrels. There were 3 karyomorphs according to fundamental number (FN and different chromosomal characteristics caused by rearregement, suggesting that S. granatensis represents a complex of species. Relationships between karyotype and phenotype were not observed. The variation in the colour of sqirrels’ fur was probably due to environmental conditions.

  10. Variación cariológica en diferentes fenotipos de Sciurus granatensis (Rodentia, Sciuridae Karyologic Variation in Different Phenotypes of Sciurus granatensis (Rodentia, Sciuridae

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    Chacón Marcos Nicolás

    2007-12-01

    Full Text Available Siete ejemplares de Sciurus granatensis (ardilla colombiana de diferentes fenotipos según color, rescatadas del tráfico ilegal de fauna silvestre de Colombia fueron estudiadas. Mediante técnicas convencionales de bandeo cromosómico G, C, Q, R y NOR se estableció su cariotipo 2n=42. Se encontraron tres cariomorfos de acuerdo al Número Fundamental (NF y características propias de cada uno de los complementos ocasionadas por distintos rearreglos cromosómicos, lo cual sugiere que S. granatensis es un complejo de especies. No se observó relación entre cariotipo y fenotipo. La variación en el color del pelaje se debe probablemente a las condiciones ambientales.Seven specimens of Sciurus granatensis (redtailed squirrel rescued from illegal fauna traffic in Colombia were studied; they had different phenotypes according to colour. G, C, Q, R and NOR chromosome banding was used, being found a 2n=42 diploid number for the Sciurus granatensis Colombian squirrels. There were 3 karyomorphs according to fundamental number (FN and different chromosomal characteristics caused by rearregement, suggesting that S. granatensis represents a complex of species. Relationships between karyotype and phenotype were not observed. The variation in the colour of sqirrels' fur was probably due to environmental conditions.

  11. Obsessed with grasses?: The case of mara Dolichotis patagonum(Caviidae: Rodentia) ¿Obsesionada con gramíneas?: El caso de mara Dolichotis patagonum (Caviidae: Rodentia)

    OpenAIRE

    MOIRA S. SOMBRA; ANTONIO M MANGIONE

    2005-01-01

    The diet of mara (Dolichotis patagonum, Zimmeraman 1780) within the limits of Sierra de las Quijadas National Park (San Luis, Argentina) is described. Other studies regarding mara’s diet showed that mara, feeds on different species of grasses and shrubs. However, there is controversy regarding the proportions of these items in the diet or whether this proportion varies seasonally. Considering mara’s body size, anatomical features and physiology, we suggest that mara feeds on grasses in a grea...

  12. Obsessed with grasses?: The case of mara Dolichotis patagonum(Caviidae: Rodentia ¿Obsesionada con gramíneas?: El caso de mara Dolichotis patagonum (Caviidae: Rodentia

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    MOIRA S. SOMBRA

    2005-09-01

    Full Text Available The diet of mara (Dolichotis patagonum, Zimmeraman 1780 within the limits of Sierra de las Quijadas National Park (San Luis, Argentina is described. Other studies regarding mara’s diet showed that mara, feeds on different species of grasses and shrubs. However, there is controversy regarding the proportions of these items in the diet or whether this proportion varies seasonally. Considering mara’s body size, anatomical features and physiology, we suggest that mara feeds on grasses in a greater proportion than shrubs and forbs. Moreover, giving that in this region precipitation varies considerably between seasons; it is also expected to find a correlation between the diet of mara and seasons. Fecal pellets of mara were collected during four periods including two dry, and two wet seasons. Relative frequency of each item in scats was determined by microhistological analysis. Results support the hypothesis that mara shows preference for grasses, despite they are less available than shrubs and forbs and that this preference remains constant through seasons regardless of the precipitation regime. The characteristics of mara’s diet and the ecological implications of these findings are discussedEn este trabajo se describe la dieta de mara (Dolichotis patagonum Zimmeraman 1780 en el Parque Nacional Sierra de las Quijadas (San Luis, Argentina. Los estudios realizados sobre su dieta indican que se alimenta de varias especies de gramíneas y arbustos. Sin embargo, existe cierta controversia acerca de la proporción en que se presentan estos ítemes, y si las mismas varían estacionalmente. En base al tamaño corporal de mara, y a sus características anatómicas y fisiológicas se propone que, mara consume una mayor proporción de gramíneas que de otras hierbas no graminiformes y dicotiledóneas en general. Además esperamos una variación estacional de la dieta, correlacionada a una posible variación estacional en los recursos alimentarios asociada a las precipitaciones. Se colectaron muestras de heces correspondientes a cuatro estaciones en el parque, dos estaciones secas y dos lluviosas. Mediante análisis microhistológico se determinó la proporción de cada ítem medido como frecuencia de aparición en las heces. Los resultados apoyan la hipótesis de un consumo preferencial de gramíneas por parte de mara. Las gramíneas aparecen en mayor proporción en la dieta a pesar de estar en menor disponibilidad en el hábitat y sin que el régimen de precipitación tenga algún efecto Se discuten las características de la dieta de mara y las implicancias ecológicas relacionadas con esta especie

  13. Respuestas foliares de Aristotelia chilensis (Molina Stuntz (Elaeocarpaceae a la fragmentación del bosque maulino Leaf responses of Aristotelia chilensis (Molina Stuntz (Elaeocarpaceae to the fragmentation of the Maulino forest

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    FIORELLA REPETTO-GIAVELLI

    2007-12-01

    Full Text Available La fragmentación que ha sufrido el bosque nativo de Chile debido a la fuerte presión antrópica ha causado, además de la grave pérdida de habitat, la modificación del microclima de los parches de bosque remanente que alguna vez constituyeron un bosque continuo de especies nativas. Estos cambios generarían respuestas morfológicas, químicas y fisiológicas en plantas capaces de adaptarse a las nuevas condiciones. Este estudio tiene como objetivo identificar respuestas a nivel de las hojas ante el aumento de radiación solar y disminución de agua en el suelo que ocurre al interior de los fragmentos. Para esto utilizamos a Aristotelia chilensis, especie que crece tanto en fragmentos como en bosque continuo, y comparamos parámetros relacionados a su morfología foliar en bosque y fragmentos y medimos su repercusión en la capacidad fotosintética de A. chilensis. En términos morfológicos, se observó una disminución del área foliar y del área foliar específica en los fragmentos, siendo 1,2 veces menor que en el bosque continuo. En los fragmentos, el grosor de la epidermis y del parénquima esponjoso son más de 1,3 veces mas gruesos que en el bosque continuo. El grosor del parénquima en empalizada, en cambio, no se vio modificado. La cantidad de nitrógeno en las hojas es 1,2 veces mayor en el bosque continuo que en los fragmentos, mientras que el contenido de carbono no varía. La conductancia estomática en el bosque continuo fue 1,5 veces mayor que en los fragmentos. Aristotelia chilensis responde morfológica y fisiológicamente ante los cambios abióticos generados por la fragmentación de los bosques, lo que le permite sobrevivir tanto en ambientes de baja luminosidad como el bosque continuo y en ambientes de alta luminosidad y bajo contenido hídrico como los fragmentos de bosque, manteniendo tasas fotosintéticas semejantes en ambos ambientesFragmentation of the Maulino forest implies significant habitat loss, as well as the modification of the microclimatic conditions of the remaining forest patches. Fragments are drier, hotter and receive more light than the continuous forest. These changes might induce morphological, chemical and physiological responses on individuals inhabiting forest patches. This study aims to identify morpho and physiological changes in Aristotelia chilensis, an evergreen tree that grows both in forest fragments and continuous forest. Leaves were 1.2 times smaller in forest fragments than in the continuous forest. Similar reduction was observed on specific leaf area (SLA. In forest fragments, the thickness of epidermis and of the spongy mesophyll was more than 1.3 times larger than that on the continuous forest, whereas the thickness of the palisade mesophyll did not differ. The amount of foliar nitrogen was 1.2 times larger in the continuous forest than in fragments, whereas the carbon content did not differ. Stomatal conductance in the continuous forest was 1.5 fold higher than that in forest fragments. Changes depicted by A. chilensis allows it to survive in environments of low luminosity as the continuous forest, and in environments of low water content as the forest fragments, maintaining similar photosynthetic rates in both environments

  14. Respuestas foliares de Aristotelia chilensis (Molina) Stuntz (Elaeocarpaceae) a la fragmentación del bosque maulino Leaf responses of Aristotelia chilensis (Molina) Stuntz (Elaeocarpaceae) to the fragmentation of the Maulino forest

    OpenAIRE

    FIORELLA REPETTO-GIAVELLI; CAVIERES, LOHENGRIN A.; SIMONETTI

    2007-01-01

    La fragmentación que ha sufrido el bosque nativo de Chile debido a la fuerte presión antrópica ha causado, además de la grave pérdida de habitat, la modificación del microclima de los parches de bosque remanente que alguna vez constituyeron un bosque continuo de especies nativas. Estos cambios generarían respuestas morfológicas, químicas y fisiológicas en plantas capaces de adaptarse a las nuevas condiciones. Este estudio tiene como objetivo identificar respuestas a nivel de las hojas ante el...

  15. OSTEOMETRÍA DE VICUGNA VICUGNA MOLINA, 1782 EN EL PLEISTOCENO FINAL DE PATAGONIA MERIDIONAL CHILENA: IMPLICANCIAS PALEOECOLÓGICAS Y BIOGEOGRÁFICAS / Osteometry of Vicugna vicugna Molina, 1782 in the late Pleistocene of southern chilean Patagonia

    OpenAIRE

    Rafael Labarca Encina; Alfredo Prieto Iglesias

    2009-01-01

     Se presenta un análisis osteométrico uni y multivariado con los materiales fósiles -principalmente huesos cortos y falanges- de Vicugna sp. del yacimiento Cueva Lago Sofía 4 (13500 – 11000 AP), ubicado en la provincia de Última Esperanza (Región de Magallanes, Chile). Los resultados indican que los elementos analizados poseen un tamaño compatible con los registrados para Vicugna vicugna, no superando en ningún caso a los especímenes conocidos para Vicugna gracilis del Pleistoceno de la regió...

  16. OSTEOMETRÍA DE VICUGNA VICUGNA MOLINA, 1782 EN EL PLEISTOCENO FINAL DE PATAGONIA MERIDIONAL CHILENA: IMPLICANCIAS PALEOECOLÓGICAS Y BIOGEOGRÁFICAS / Osteometry of Vicugna vicugna Molina, 1782 in the late Pleistocene of southern chilean Patagonia

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    Rafael Labarca Encina

    2009-12-01

    Full Text Available  Se presenta un análisis osteométrico uni y multivariado con los materiales fósiles -principalmente huesos cortos y falanges- de Vicugna sp. del yacimiento Cueva Lago Sofía 4 (13500 – 11000 AP, ubicado en la provincia de Última Esperanza (Región de Magallanes, Chile. Los resultados indican que los elementos analizados poseen un tamaño compatible con los registrados para Vicugna vicugna, no superando en ningún caso a los especímenes conocidos para Vicugna gracilis del Pleistoceno de la región Pampeana. Esto confirma la información morfológica y de ADN antiguo que indicaba la presencia de Vicugna vicugna en la Patagonia meridional chilena. Se discuten los resultados en términos taxonómicos, biogeográficos y paleoecológicos sugiriendo que la presencia de este taxón fuera de su rango actual de distribución se debió a las condiciones ambientales compartidas entre la Puna y Patagonia austral durante la transición Pleistoceno-Holoceno. La extinción de V. vicugna se habría debido al impacto de los cambios climáticos ocurridos al inicio del Holoceno producto de su dieta pastadora y etología no migratoria y territorial, a lo que se habría sumado una caza por parte de depredadores humanos y no humanos.Palabras clave: género Vicugna, osteometría, Pleistoceno, Patagonia AbstractThis contribution presents the results of single and multi-variable osteometric analyses performed on a sample of short bones and phalanxes assigned to Vicugna sp. from Lago Sofía Cave 4 site (13500 – 11000 BP, Región de Magallanes, Chile. The elements analyzed show a similar size to the reference collections for Vicugna vicugna, and do not exceed the metrics for the pampean pleistocenic specimens of Vicugna gracilis. This confirms the morphological and ancient DNA data that indicated the presence of vicuña in southern Chilean Patagonia. The taxonomic, biogeographic and palaeoecologic discussion of these results, suggests that the presence of this species outside its current distribution range was due to shared environmental conditions between the Puna and Patagonia during the Pleistocene-Holocene transition. The extinction of this form is, most likely, due to the impact of climatic change during the begining of the Holocene over its pasturing diet and its territorial and non migratory habits. It is added to this, a hunting pressure by human and non-human predators.Keywords: Vicugna genus, osteometry, Pleistocene, Patagonia 

  17. ANALYSIS OF TISSUE SPECIFIC DIGEST IVE AND ANTIOXIDANT ENZYMES FROM CUCURBITA PEPO AND LANGENARIA SICERARIA ( MOLINA STANDL

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    Shubhangi D. Shirsat

    2015-05-01

    Full Text Available Digestive enzymes and antioxidants present in food ma terials act as a surplus for our digestive system. In present study, five digestive enzymes namely amylase, protease, lipase, pectinase and α -glucosidase and seven antioxidant assays for Catalase, Peroxidase, H 2 O 2 , Super Oxide Dismutase, Malondialdehyde, Carotenoid & radical scavenging were carried out from two members of cucurbitaceae family namely Cucurbita pepo (Pumpkin and Langenaria siceraria (bottle gourd. Amongst them amylase, lipa se and pectinase activity were found in C. pepo and L. siceraria. The enzyme kinetics studies revealed their maxi mum velocities to be 0.2631 and 0.33557 mM min -1 for Amylase and Lipase respectively. Our further studies report the presence of proteinase inhibitors and α -gluosidase inducers, while absence of amylase inhibitors and α -glucosidase inhibitors in pumpkin and bottle gourd. Present findings suggest the use of these fruits as an attractive materi al for further study leading to possible development of digestive syrup.

  18. Reproductive ecology of coypu (Myocastor coypus Molina, 1782) in the Middle Delta of the Paraná River, Argentina.

    Science.gov (United States)

    Courtalon, P; Bó, R F; Spina, F; Jiménez, N; Cantil, L; Fernández, R; Porini, G

    2015-01-01

    The objective of this study was to estimate and compare some important reproductive parameters of Myocastor coypus over time (June 2006-May 2008), in wetlands of the Middle Delta of the Paraná River (MD) Entre Ríos province, R. Argentina. Within the original coypu distribution range, the MD is among the areas of highest habitat suitability for the species. Coypus were captured and the following reproductive parameters were estimated on a monthly, seasonal and annual basis: pregnancy rate (PR), litter size (LS), gross productivity (GP) and annual production (AP). Statistical non-parametric tests were used for comparisons. Additionally, the expected birth date of each embryo and fetus was estimated by assigning it to a developmental stage category and considering the gestation period of the species. All the parameters showed high values and PR and LS differed significantly between the dry (2006) and humid years (2007). Two peaks of birth were detected, one in spring and another one in mid-autumn. The implications of these results for ensuring the sustainable management of this rodent are discussed. PMID:25945618

  19. In vitro activity on human gut bacteria of murta leaf extracts (Ugni molinae turcz.), a native plant from Southern Chile.

    Science.gov (United States)

    Shene, Carolina; Canquil, Nelly; Jorquera, Milko; Pinelo, Manuel; Rubilar, Mónica; Acevedo, Francisca; Vergara, Carola; von Baer, Dietrich; Mardones, Claudia

    2012-06-01

    Despite the fact that murta infusions have been used to treat gut/urinary infections by native Chileans for centuries, the mechanisms promoting such effects still remain unclear. As a first attempt to unravel these mechanisms, human fecal samples were incubated in a medium containing water extract of murta leaves (ML) and the growth of different bacterial groups was evaluated. Control incubations were made in media containing fructooligosaccharides (FOS) and glucose as a carbon source. Phenolic compounds in the ML extract, likely promoters of bioactivity, were identified by HPLC-DAD-MS(n) . Concentrations (log₁₀ CFU/mL) of bifidobacteria and lactobacilli in media containing the extract and FOS were 7.33 ± 0.05/4.95 ± 0.20 and 6.44 ± 0.22/6.05 ± 0.06, respectively. Clostridia, anaerobes and Enterobacteriaceae grew to a similar extent in media containing murta extract and FOS. In vitro tests (disk diffusion) showed that Gram-positive (Bacillus and Paenibacillaceae) and Gram-negative (Enterobacteriaceae) bacteria isolated from fecal samples were sensitive to both water and 50/50 ethanol/water extracts of ML (28.4 μg gallic acid equivalents). At this concentration, the antimicrobial activity of ML extracts was significantly (P 0.05). No evidence of dependency between the antimicrobial activity of ML extracts and the enzymatic capability of the sensitive strains was found. PMID:22583138

  20. ANALYSIS OF FRUIT POLYMORPHISM IN THE BOTTLE LAGENARIA SICERARIA (MOLINA STANDL. ON THE BASIS OF IMAGES OF ART WORKS

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    Tsatsenko L. V.

    2013-11-01

    Full Text Available The article considers the issues of international spread the fruits of bottled gourd. Analysis of polymorphism of lagenaria fruits have been made on the basis of images of the paintings and sculpture, marked characteristic features of each country. Issues of selection on the basis of the trait of fruit form have considered

  1. Morphological and allozyme variation in a collection of Lagenaria siceraria (Molina Standl. from Côte d'Ivoire

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    Koffi KK.

    2009-01-01

    Full Text Available This study describes the intraspecific variation of 30 edible-seed Lagenaria siceraria germplasm accessions from the University of Abobo-Adjamé. These accessions were collected from three (Centre, East and South geographical zones of Côte d’Ivoire. Selection based on seed size by the farmers has resulted in subdividing the species into two cultivars: large-seeded and smallseeded. The morphological diversity study of the collection included 18 accessions and 24 traits. The multivariate analysis of variance (MANOVA showed a significant difference between the two groups of cultivars. Principal component analysis on 13 traits pointed out variations among individuals, mainly on the basis of flower, fruit, and seed size. Dendrogram with UPGMA method allowed clustering of the cultivars. The genetic structure analysis among accessions using allozyme markers showed the following values: 18.95% for the proportion of polymorphic loci (P, 1.21 for the number of alleles (A and 0.053 for observed heterozygosity (Ho. The level of the within accessions genetic diversity (HS = 0.188 was higher than the genetic variation among accessions (DST = 0.082. The estimates of F-statistics indicated a low level of genetic differentiation between accessions (FST = 0.298. Such a value suggested that L. siceraria maintains about 30% of its genetic variation among accessions. Nei genetic distances between the two cultivars were also low (0.002, indicating that cultivars were genetically similar enough to belong to the same genetic group.

  2. American tripanosomiasis: a study on the prevalence of Trypanosoma cruzi and Trypanosoma cruzi-like organisms in wild rodents in San Luis province, Argentina Tripanosomiasis americana: um estudo sobre a prevalência do Trypanosoma cruzi e Trypanosoma cruzi-like em roedores silvestres da provincia de San Luis, Argentina

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    Ana María Brigada

    2010-06-01

    Full Text Available INTRODUCTION: Chagas disease is caused by Trypanosoma cruzi. Wild and perianthropic mammals maintain the infection/transmission cycle, both in their natural habitat and in the peridomestic area. The aim of this paper was to present the results from a study on wild rodents in the central and northern regions of San Luis province, Argentina, in order to evaluate the prevalence of this infection. METHODS: Sherman traps were set up in capture areas located between latitudes 32º and 33º S, and longitudes 65º and 66º W. The captured rodents were taxonomically identified and hemoflagellates were isolated. Morphological, biometric and molecular studies and in vitro cultures were performed. Infection of laboratory animals and histological examination of the cardiac muscle and inoculation area were also carried out. Parasites were detected in circulating blood in Calomys musculinus, Graomys griseoflavus, Phyllotis darwini and Akodon molinae. The parasites were identified using biological criteria. Molecular PCR studies were performed on some isolates, which confirmed the characterization of these hemoflagellates as Trypanosoma cruzi. RESULTS AND CONCLUSIONS: Forty-four percent of the 25 isolates were identified as Trypanosoma cruzi, and the remaining 56% as Trypanosoma cruzi-like. These findings provide evidence that wild rats infected with Trypanosoma cruzi and Trypanosoma cruzi-like organisms are important in areas of low endemicity.INTRODUÇÃO: A doença de Chagas é causada pelo Trypanosoma cruzi e os mamíferos periantrópicos e silvestres mantêm o ciclo de infecção/transmissão, tanto no ambiente natural, como no peridomicílio. O objetivo deste trabalho foi mostrar os resultados de um estudo de roedores silvestres do centro e norte da Província de San Luis, Argentina, para avaliar a prevalência da infecção. MÉTODOS: Estabeleceram-se lugares de caça com armadilhas tipo Sherman entre os 32º - 33º de latitude S e 65º - 66º de

  3. Records of Coendou ichillus (Rodentia, Erethizontidae from the Lower Urubamba Region of Peru

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    Tremaine Gregory

    2015-06-01

    Full Text Available Coendou ichillus was first described in 2001 by Voss and da Silva, with a range from Amazonian Ecuador to Iquitos, Peru. Here, we describe an adult female Coendou ichillus specimen collected in a Tomahawk trap in the forest canopy of the Lower Urubamba Region of Peru in October 2013. We also describe pathologies and behaviors observed through 379 camera trapping photo events (2,196 photos gathered in natural canopy bridges over the course of a year (7,198 trap nights, including information on activity period over the course of the day and over the course of the lunar cycle. We conservatively estimate that 17 individuals were photographed, including one juvenile. Being 900 km away from Iquitos, Peru (the site of the closest record, discovery of this species in the Lower Urubamba constitutes a significant range extension.

  4. The role of seed mass on the caching decision by agoutis, Dasyprocta leporina (Rodentia: Agoutidae

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    Mauro Galetti

    2010-06-01

    Full Text Available It has been shown that the local extinction of large-bodied frugivores may cause cascading consequences for plant recruitment and overall plant diversity. However, to what extent the resilient mammals can compensate the role of seed dispersal in defaunated sites is poorly understood. Caviomorph rodents, especially Dasyprocta spp., are usually resilient frugivores in hunted forests and their seed caching behavior may be important for many plant species which lack primary dispersers. We compared the effect of the variation in seed mass of six vertebrate-dispersed plant species on the caching decision by the red-rumped agoutis Dasyprocta leporina Linnaeus, 1758 in a land-bridge island of the Atlantic forest, Brazil. We found a strong positive effect of seed mass on seed fate and dispersal distance, but there was a great variation between species. Agoutis never cached seeds smaller than 0.9 g and larger seeds were dispersed for longer distances. Therefore, agoutis can be important seed dispersers of large-seeded species in defaunated forests.

  5. Rattus norvegicus (Rodentia: Muridae Infected by Leishmania (Leishmania infantum (syn. Le. chagasi in Brazil

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    Fabiana de Oliveira Lara-Silva

    2014-01-01

    Full Text Available In the present study we surveyed the fauna of phlebotomine sand flies and small mammals in peridomestic areas from a Brazilian municipality where the American cutaneous leishmaniasis (ACL is endemic. A total of 608 female phlebotomine sand flies were captured during nine months in 2009 and 2010. Seven different species were represented with 60% of them being Lutzomyia intermedia and Lu. whitmani, both incriminated vectors of ACL. Lu. longipalpis, a proven vector of visceral leishmaniasis (VL was also captured at high proportion (12.8%. Genomic DNA analysis of 136 species-specific pools of female sand flies followed by molecular genotyping showed the presence of Leishmania infantum DNA in two pools of Lu. longipalpis. The same Leishmania species was found in one blood sample from Rattus norvegicus among 119 blood and tissue samples analysed. This is the first report of Le. infantum in R. norvegicus in the Americas and suggests a possible role for this rodent species in the zoonotic cycle of VL. Our study coincided with the reemergence of VL in Governador Valadares.

  6. Notocotylus loeiensis n. sp. (Trematoda: Notocotylidae from Rattus losea (Rodentia: Muridae in Thailand

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    Chaisiri K.

    2011-02-01

    Full Text Available Notocotylus loeiensis n. sp. (Trematoda: Notocotylidae is described from the cecum of the lesser rice field rat (Rattus losea, from Loei Province in Thailand with a prevalence of 9.1% (eight of 88 rats infected. The new species differs from previously described Notocotylus species mainly by the extreme prebifurcal position of the genital pore and the number of ventral papillae. This is the first description at the species level of Notocotylus from mammals in Southeast Asia.

  7. Notocotylus loeiensis n. sp. (Trematoda: Notocotylidae) from Rattus losea (Rodentia: Muridae) in Thailand

    OpenAIRE

    Chaisiri K.; Morand S.; Ribas A.

    2011-01-01

    Notocotylus loeiensis n. sp. (Trematoda: Notocotylidae) is described from the cecum of the lesser rice field rat (Rattus losea), from Loei Province in Thailand with a prevalence of 9.1% (eight of 88 rats infected). The new species differs from previously described Notocotylus species mainly by the extreme prebifurcal position of the genital pore and the number of ventral papillae. This is the first description at the species level of Notocotylus from mammals in Southeast Asia.

  8. Genetic diversity and population structure of the Guinea pig (Cavia porcellus, Rodentia, caviidae in Colombia

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    William Burgos-Paz

    2011-01-01

    Full Text Available The aim was to establish the genetic diversity and population structure of three guinea pig lines, from seven production zones located in Nariño, southwest Colombia. A total of 384 individuals were genotyped with six microsatellite markers. The measurement of intrapopulation diversity revealed allelic richness ranging from 3.0 to 6.56, and observed heterozygosity (Ho from 0.33 to 0.60, with a deficit in heterozygous individuals. Although statistically significant (p < 0.05, genetic differentiation between population pairs was found to be low. Genetic distance, as well as clustering of guinea-pig lines and populations, coincided with the historical and geographical distribution of the populations. Likewise, high genetic identity between improved and native lines was established. An analysis of group probabilistic assignment revealed that each line should not be considered as a genetically homogeneous group. The findings corroborate the absorption of native genetic material into the improved line introduced into Colombia from Peru. It is necessary to establish conservation programs for native-line individuals in Nariño, and control genealogical and production records in order to reduce the inbreeding values in the populations.

  9. Seasonal changes in burrow geometry of the common mole rat (Rodentia: Bathyergidae)

    Science.gov (United States)

    Thomas, H. G.; Scantlebury, M.; Swanepoel, D.; Bateman, P. W.; Bennett, N. C.

    2013-11-01

    Sociality in mole rats has been suggested to have evolved as a response to the widely dispersed food resources and the limited burrowing opportunities that result from sporadic rainfall events. In the most arid regions, individual foraging efficiency is reduced, and energetic constraints increase. In this study, we investigate seasonal differences in burrow architecture of the social Cryptomys hottentotus hottentotus in a mesic region. We describe burrow geometry in response to seasonal weather conditions for two seasons (wet and dry). Interactions occurred between seasons and colony size for the size of the burrow systems, but not the shape of the burrow systems. The fractal dimension values of the burrow systems did not differ between seasons. Thus, the burrow complexity was dependent upon the number of mole rats present in the social group.

  10. Proliferating Cell Nuclear Antigen (PCNA) expression in tooth primordia in the field vole (Microtus agrestis, Rodentia)

    Czech Academy of Sciences Publication Activity Database

    Matulová, Petra; Witter, K.; Míšek, Ivan

    2002-01-01

    Roč. 43, 2/3 (2002), s. 138-142. ISSN 0300-8207 R&D Projects: GA AV ČR IAA7039901; GA ČR GP304/01/P021; GA MŠk OC B8.20; GA AV ČR KSK6005114 Keywords : dentition * odontogenesis * proliferation marker Subject RIV: EB - Genetics ; Molecular Biology Impact factor: 1.646, year: 2002

  11. Effects of classical music as part of environmental enrichment in captive Mus musculus (Rodentia: Muridae

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    José Geraldo Pereira da Cruz

    2010-06-01

    Full Text Available In the wild, animals are exposed to an ever-changing array of sensory stimuli. The captive environment, by contrast, is generally much more impoverished in terms of the cues it offers the animals housed within. In a bid to remedy this, and promote better welfare, mice (Mus musculus were exposed to two conditions: no auditory stimulation, and stimulation with classical music. In all experiments, a battery of behavior tests was used. The results demonstrated significantly decreased immobility in the forced swim, increased enclosed arm entries in the plus-maze, and decreased immobility in the open-field, in animals that had been pre-exposed to music 24h earlier, suggesting that changes in mouse motor activity were caused by classical music. This study led to the conclusion that environmental enrichment may have profound effects on the behavior of mice in behavioral tests, and that classical music can be a relatively simple method of contributing to the well-being of captive mice, but it can affect the results of experiments such as forced swimming.

  12. Effects of classical music as part of environmental enrichment in captive Mus musculus (Rodentia: Muridae)

    OpenAIRE

    José Geraldo Pereira da Cruz; Débora Delwing Dal Magro; Júlia Niehues da Cruz

    2010-01-01

    In the wild, animals are exposed to an ever-changing array of sensory stimuli. The captive environment, by contrast, is generally much more impoverished in terms of the cues it offers the animals housed within. In a bid to remedy this, and promote better welfare, mice (Mus musculus) were exposed to two conditions: no auditory stimulation, and stimulation with classical music. In all experiments, a battery of behavior tests was used. The results demonstrated significantly decreased immobility ...

  13. A new form of rodent placentation in the relict species, Laonastes aenigmamus (Rodentia Diatomyidae)

    DEFF Research Database (Denmark)

    Carter, Anthony Michael; Enders, A C; Jones, C J P; Keovichit, P K; Hugot, J P

    2013-01-01

    . There was a single fetus that very likely would be precocial at birth. DISCUSSION: A lobulated labyrinth and the presence of a subplacenta and a fibrovascular ring emerged as synapomorphies for Hystricognathi. Laonastes, Ctenodactylus and stem Hystricognathi all had precocial young, whereas altriciality...

  14. Reservoir competence of Microtus pennsylvanicus (Rodentia: Cricetidae) for the Lyme disease spirochete, Borrelia burgdorferi

    Science.gov (United States)

    Markowski, D.; Ginsberg, H.S.; Hyland, K.E.; Hu, R.

    1998-01-01

    The reservoir competence of the meadow vole, Microtus pennsylvanicus Ord, for the Lyme disease spirochete, Borrelia burgdorferi Johnson, Schmid, Hyde, Steigerwalt & Brenner was established on Patience Island, RI. Meadow voles were collected from 5 locations throughout Rhode Island. At 4 of the field sites, M. pennsylvanicus represented only 4.0% (n = 141) of the animals captured. However, on Patience Island, M. pennsylvanicus was the sole small mammal collected (n = 48). Of the larval Ixodes scapularis Say obtained from the meadow voles on Patience Island, 62% (n = 78) was infected with B. burgdorferi. Meadow voles from all 5 locations were successfully infected with B. burgdorferi in the laboratory and were capable of passing the infection to xenodiagnostic I. scapularis larvae for 9 wk. We concluded that M. pennsylvanicus was physiologically capable of maintaining B. burgdorferi infection. However, in locations where Peromyscus leucopus (Rafinesque) is abundant, the role of M. pennsylvanicus as a primary reservoir for B. burgdorferi was reduced.

  15. Genetic diversity and population structure of the Guinea pig (Cavia porcellus, Rodentia, caviidae) in Colombia

    OpenAIRE

    William Burgos-Paz; Mario Cerón-Muñoz; Carlos Solarte-Portilla

    2011-01-01

    The aim was to establish the genetic diversity and population structure of three guinea pig lines, from seven production zones located in Nariño, southwest Colombia. A total of 384 individuals were genotyped with six microsatellite markers. The measurement of intrapopulation diversity revealed allelic richness ranging from 3.0 to 6.56, and observed heterozygosity (Ho) from 0.33 to 0.60, with a deficit in heterozygous individuals. Although statistically significant (p < 0.05), genetic differen...

  16. Chromosome banding pattern in fat dormouse and bank vole (Mammalia: Rodentia) from Turkey

    Czech Academy of Sciences Publication Activity Database

    Arslan, A.; Zima, Jan; Yorulmaz, T.; Gözütok, S.; Toyran, K.

    2013-01-01

    Roč. 61, 1-2 (2013), s. 47-51. ISSN 0015-5497 Institutional support: RVO:68081766 Keywords : AgNOR staining * Anatolia * C-banding * Glis glis * Myodes glareorus Subject RIV: EG - Zoology Impact factor: 0.478, year: 2013

  17. Paternal behavior and testosterone plasma levels in the Volcano Mouse Neotomodon alstoni (Rodentia: Muridae)

    OpenAIRE

    Juana Luis; Lorena Ramírez; Agustín Carmona; Guadalupe Ortiz; Jesús Delgado; René Cárdenas

    2009-01-01

    Aunque inicialmente se pensaba que la testosterona inhibía el despliegue de conducta paterna en los machos de roedores, en algunas especies se ha demostrado que son necesarios niveles altos de testosterona para la exhibición de cuidados paternos. En cautiverio, los machos del ratón mexicano de los volcanes (Neotomodon alstoni), proporcionan a sus crías los mismos cuidados que la madre, con la excepción del amamantamiento. En este estudio se midieron los niveles plasmáticos de testosterona: en...

  18. New records of some rare rodents (Mammalia: Rodentia) from South-East Bulgaria

    OpenAIRE

    Nedko Nedyalkov

    2013-01-01

    New records of three rare rodent species from SE Bulgaria are reported, as follows: European Snow Vole (Chionomys nivalis) – Madzharovo Town, Eastern Rhodope Mountains (UTM MG01); Gray Dwarf Hamster (Cricetulus migratorius) –Matochina Village (UTM MG 63); and Roach's Mouse-tailed Dormouse (Myomimus roachi) –Malki Voden Village, Eastern Rhodope Mountains (UTM MG11). All three species were found in the food remains of two owl species: the Barn Owl (Tyto alba) and the Tawny Owl (Strix aluco), an...

  19. The complete mitochondrial genome of the Mongolian gerbil, Meriones unguiculatus (Rodentia: Muridae: Gerbillinae).

    Science.gov (United States)

    Kim, Eun Bae; Lee, Sang-Goo

    2016-01-01

    The complete mitochondrial genome of the Mongolian gerbil, Meriones unguiculatus, was sequenced. The 16,360 bp long genome has 37 genes typical for rodent mitogenomes, including 22 tRNA genes, 2 rRNA genes, and 13 protein-coding genes. The total GC content of the mitochondrial genome is 36.96% with the base composition of 32.61% A, 23.71% C, 13.24% G, and 30.44% T. Translational terminators of three genes (cytb, cox3, and nad4) were generated by the addition of 3' A residues to the mRNA. This novel rodent mitochondrial genome will provide comparable information for understanding the rodent mitochondrial evolution. PMID:25185794

  20. Molecular phylogenetics of the genus Gerbillus (Rodentia, Gerbillinae): Implications for systematics, taxonomy and chromosomal evolution.

    Science.gov (United States)

    Abiadh, Awatef; Chetoui, M'barek; Lamine-Cheniti, Taher; Capanna, Ernesto; Colangelo, Paolo

    2010-08-01

    Although gerbils forms an important component of the mammalian fauna of arid and semi-arid area, the taxonomic and phylogenetic relationship within the species of the genus Gerbillus are still ambiguous. The present paper introduces findings based on the whole cytochrome b (1140 bp) mitochondrial genes of seven species (Gerbillus campestris, G. latastei, G. nanus, G. tarabuli, G. gerbillus, G. simoni and G. nigeriae) six of which are present in Tunisia. Our results show that all the Gerbillus species are monophyletic. Moreover, molecular phylogeny rejects the genus rank for the taxon Dipodillus. Gebillus nanus, a species belonging to the subgenus Hendecapleura, early diverged from the other species which are divided into two clades: the subgenus Dipodillus, including G. campestris and G. simoni and the subgenus Gerbillus including G. gerbillus, G. nigeriae, G. tarabuli and G. latastei. These results are congruent with morphological and karyological evidences. According to molecular clock, the appearance of the genus Gerbillus coincides with the Miocene-Pliocene expansion of African arid biomes. Extensive intraspecific chromosomal changes evolved in a relatively narrow lapse of time, like in the case of G. latastei, allowing the fixations of different chromosomal variants due to pericentric inversion. PMID:20412863

  1. Habitats, population densities, and social structure of capybaras (Hydrochaeris Hydrochaeris, Rodentia in the Pantanal, Brazil

    Directory of Open Access Journals (Sweden)

    Cleber J.R. Alho

    1987-01-01

    Full Text Available (1 The Pantanal is the central portion of a sunken flat plain bordering the upper Paraguay river, with an area of 140,000 km². Seasonal floods begin in January and end in April. From May to October the land dries out and campos (grassland formations and scattered pools appear. (2 Typical capybara habitat in the Pantanal is composed of three components: the water, a patch of forest, and a grass field for foraging. Highest densities of capybaras (14 individuals/km² were found during the rainy season when the available space for capybaras was reduced due to the flooding. Areas without ponds or creeks presented low densities (from 0.38 to 0.84 capybaras/km². Group sizes ranged from 2 to 49 individuals (x = 9.48. (3 Reproduction occurred year-round and young of different ages were seen throughout the year. However, the principal recruitment of young to the population was observed in July-August. While the females took turns in caring for young of different ages, probably the offspring of mothers who are sisters in the same social groups, the males competed intensively with each other for access to breeding females. The male's reproductive success appears to be limited to the number of breeding females that males have access to in the social group.

  2. Death of Boa constrictor amarali (serpentes, boidae) after ingestion of a tree porcupine (rodentia)

    OpenAIRE

    A. L. Cherubini; T. H. Barrella; R. J. DA SILVA

    2003-01-01

    The objective of this paper is to report the death of a Boa constrictor amarali after ingestion of a tree porcupine. The animal was donated to the Center for the Study of Venoms and Venomous Animals (CEVAP/UNESP) - and died in captivity. At necropsy, spine-like structures were observed in the stomach serosa and vicinity, and the stomach mucosa showed an intense reddish area, suggesting inflammation. The analysis of the spine-like structure revealed that they were tree porcupine spines. The fe...

  3. Parasitic associations of a threatened Sri Lankan rainforest rodent, Mus mayor pococki (Rodentia: Muridae

    Directory of Open Access Journals (Sweden)

    P.B. Ratnaweera

    2010-06-01

    Full Text Available Parasitic investigations of the subspecies Mus mayori pococki were carried out in four rainforests that included two man and biosphere reserves and two forest reserves of Sri Lanka from October 2006 to August 2007. Rodents were live-trapped using Shermans traps. Of the 117 individuals of M. m. pococki captured 73% were infested with four types of ectoparasites mites of the genus Echinolaelaps, a louse Polyplax serrata, a larval stage of hard tick Ixodes and pseudoscorpions of the genus Megachernes. Mites were the most abundant ectoparasite of this rodent host. Faecal examination revealed the presence of a nematode larva of the Order Strongylida and five types of parasitic ova; three nematode ova types i.e. strongyle, strongyloides, ascarid types, and cestode and mite ova. In comparison to the non-infested hosts, those infested did not show a significant difference in body weight and size. Both sexes had an equal probability of being exposed to ectoparasites. The present study on the parasitic investigations of M. m. pococki reports four new host-ectoparasite and six new endoparasitic records for the Sri Lankan rodent host.

  4. Spatial patterns in Mastomys natalensis in Tanzania (Rodentia, Muridae)

    DEFF Research Database (Denmark)

    Leirs, Herwig; Verheyen, Walter; Verhagen, Ron

    1996-01-01

    We investigated habitat preference, dispersal and movement patterns of Mastomys natalensis in fallow land and maize fields in Tanzania. During periods of low densities, the animals seemed to avoid open spaces and were concentrated in areas with rich vegetation cover. A high turn-over rate, even in...

  5. Digital dissection of the masticatory muscles of the naked mole-rat, Heterocephalus glaber (Mammalia, Rodentia

    Directory of Open Access Journals (Sweden)

    Philip G. Cox

    2014-06-01

    Full Text Available The naked mole-rat, Heterocephalus glaber, of the family Bathyergidae is a subterranean rodent that feeds on underground roots and tubers and digs extensive tunnel systems with its incisors. It is a highly unusual mammal with regard to its social structure, longevity, pain insensitivity and cancer resistance, all of which have made it the subject of a great deal of research in recent years. Yet, much of the basic anatomy of this species remains undocumented. In this paper, we describe the morphology of the jaw-closing musculature of the naked mole-rat, as revealed by contrast-enhanced micro-computed tomography. This technique uses an iodine stain to enable the imaging of soft tissues with microCT. The iodine-enhanced scans were used to create 3D reconstructions of the naked mole-rat masticatory muscles from which muscle masses were calculated. The jaw-closing musculature of Heterocephalus glaber is relatively very large compared to other rodents and is dominated by the superficial masseter, the deep masseter and the temporalis. The temporalis in particular is large for a rodent, covering the entirety of the braincase and much of the rear part of the orbit. The morphology of the masseter complex described here differs from two other published descriptions of bathyergid masticatory muscles, but is more similar to the arrangement seen in other rodent families. The zygomaticomandibularis (ZM muscle does not protrude through the infraorbital foramen on to the rostrum and thus the naked mole-rat should be considered protrogomorphous rather than hystricomorphous, and the morphology is consistent with secondarily lost hystricomorphy as has been previously suggested for Bathyergidae. Overall, the morphology of the masticatory musculature indicates a species with a high bite force and a wide gape–both important adaptations for a life dominated by digging with the incisors.

  6. Variación cariológica en diferentes fenotipos de Sciurus granatensis (Rodentia, Sciuridae

    Directory of Open Access Journals (Sweden)

    Bueno Angulo Marta Lucía

    2007-04-01

    Full Text Available Debido a la poca información ecológica, taxonómica o genética sobre las ardillas colombianas, existen problemas
    sistemáticos aun no resueltos (Emmons LH, 1990, lo cual dificulta la reubicación y/o liberación de ejemplares sin procedencia, provenientes del tráfico ilegal de fauna silvestre. Estudios cariológicos sirven para detectar variaciones intra e interespecíficas por lo que en este trabajo se busco detectar diferencias cariotípicas entre varios fenotipos Sciurus granatensis. La diferenciación genética en conservación, puede ser una herramienta
    útil en la toma de decisiones en los procesos de liberación de ejemplares capturados, dado que la introducción
    de individuos con genomas diferentes en un población puede originar un proceso de depresión por exogamia o introgresión genética (pérdida de alelos adaptativos locales, procesos nocivos para la población receptora. Se estudiaron siete especímenes (cinco hembras y dos machos de S. granatensis procedentes del tráfico ilegal. Los cariotipos fueron obtenidos a partir de cultivos de linfocitos de sangre periférica. Las metafases con bandas G, R, C, Q y NOR, se analizaron al microscopio y se ordenaron en el programa Lucia Karyotyping®. Los individuos estudiados corresponden a los tres fenotipos reportados por Emmons LH, 1990, pero con una gran variación cariológica. Solo uno de los machos no corresponde a los fenotipos descritos, y además presenta varios rearreglos cromosómicos que lo diferencian notablemente de los demás, por lo cual posiblemente se trate de un híbrido estéril originado de dos poblaciones diferenciadas cariológicamente. El número de cromosomas fue constante (2n=42, con variación en el número fundamental (NF=80; 81, por lo cual se reportan tres cariomorfos para Sciurus granatensis, según NF y los rearreglos cromosómicos encontrados. Se observó variación en los pares 9, 16 y una translocación universal entre autosomas dentro de uno de los ejemplares. El cromosoma X es submetacéntrico mediano. El cromosoma Y es acrocéntrico, coincidente con lo descrito para Sciurus. No se registró una relación cariotipo-fenotipo. Por lo tanto se puede sugerir que Sciurus granatensis, es un complejo de especies con diferencias cariológicas y morfológicas que no ha sido estudiado a profundidad teniendo en cuenta su amplia distribución geográfica.

  7. Replication patterns and no differential banding in Colombian squirrels, Sciurus (rodentia, sciuridae)

    International Nuclear Information System (INIS)

    Colombian Squirrels cytogenetic showed a great variability which has renewed the interest in evolutionary aspects within the group. Many chromosome banding tools must be analyzed carefully in addition to the classical G-banding G technique. These techniques include other differential bands like Q and R banding and no differential banding (C and NOR). In this article the use of each of these supplements in the cytogenetic analysis of species and cytotypes observations for the Colombian squirrels is explained.

  8. Karyological analysis of Proechimys cuvieri and Proechimys guyannensis (Rodentia, Echimyidae from central Amazon

    Directory of Open Access Journals (Sweden)

    Carlos Eduardo Faresin e Silva

    2012-01-01

    Full Text Available The aim was to characterize the karyotype of rodents of the genus Proechimys from three localities in the central Brazilian Amazon, in the search for new markers that might shed light on our understanding of the taxonomy and evolutionary history of this taxon. Two karyotypes were found, viz., 2n = 28, FN = 46 in individuals from the NRSP (Cuieiras River and REMAN (Manaus, and 2n = 46, FN = 50 in individuals from the Balbina Hydroelectric Plant. While individuals with the karyotype with 2n = 28 chromosomes were morphologically associated with Proechimys cuvieri, their karyotype shared similarities with those of the same diploid number in two other regions. Although three karyotypes are described for Proechimys cuvieri, no geographic distribution pattern that defined a cline could be identified. Based on the morphological examination of voucher specimens and additional results from molecular analysis, the karyotype with 2n = 46 and FN = 50 could be associated with P. guyannensis.

  9. Death of Boa constrictor amarali (serpentes, boidae after ingestion of a tree porcupine (rodentia

    Directory of Open Access Journals (Sweden)

    A. L. Cherubini

    2003-01-01

    Full Text Available The objective of this paper is to report the death of a Boa constrictor amarali after ingestion of a tree porcupine. The animal was donated to the Center for the Study of Venoms and Venomous Animals (CEVAP/UNESP - and died in captivity. At necropsy, spine-like structures were observed in the stomach serosa and vicinity, and the stomach mucosa showed an intense reddish area, suggesting inflammation. The analysis of the spine-like structure revealed that they were tree porcupine spines. The feeding habits and inexperience of this Boa constrictor amarali in selecting its prey may have been be responsible for its death.

  10. Karyotypic variation in the Andean rodent Phyllotis xanthopygus (Waterhouse, 1837 (Rodentia, Cricetidae, Sigmodontinae

    Directory of Open Access Journals (Sweden)

    Carolina Alicia Labaroni

    2014-12-01

    Full Text Available Phyllotis xanthopygus (Waterhouse, 1837 is an Andean rodent endemic to South America. Despite its wide geographical distribution in Argentina, few individuals have been studied on the cytogenetic level and only through conventional staining. In this work, chromosome characterization of Argentine samples of this species was performed using solid staining, C-banding and base-specific fluorochromes. Twenty two specimens were analyzed, collected in the provinces of Jujuy, Catamarca, and the north and south of Mendoza. All studied specimens showed 2n=38, having mostly the bi-armed autosomes, metacentric or submetacentric. Fundamental Number varied between 70 and 72. These changes were due to the presence of chromosome heteromorphisms in individuals from southern Mendoza and Jujuy. C-banding revealed pericentromeric blocks of constitutive heterochromatin in most chromosomes. Acrocentric chromosomes involved in heteromorphisms showed high variation in the amount of heterochromatin within and among populations. Additionally, banding with fluorochromes (DAPI and chromomycin A3 revealed homologous localization of AT and GC rich regions among chromosomes of the different populations analyzed. Comparisons among heteromorphic pairs suggested, however, that the variation might be the result of complex chromosome rearrangements, involving possibly amplifications and/or deletions of heterochromatic segments. These results are in accordance with molecular studies that indicate genetic variability within and among the populations of this taxon.

  11. The complete mitochondrial genome of Stylodipus telum (Rodentia: Dipodidae) and its phylogenetic analysis.

    Science.gov (United States)

    Luo, Guangjie; Ding, Li; Liao, Jicheng

    2016-07-01

    Stylodipus telum belongs to the genus Stylodipus in the subfamily of Dipodinae. We got its complete genome first and it is 16,696 bp in length, the heavy strand contains 31.0% A, 13.8% G, 27.3% C, 27.9% T. Among them, protein-coding genes take up approximately 67.90% of the complete sequence. Trees constructed through phylogenetic analysis showed S. telum and Jaculus jaculus were clustered in one branch belonging to the family Dipodinae. This conclusion was identical to the former result by the methods of morphological taxonomy, and it would be convenient for further research on S. telum and other jerboa. PMID:26024139

  12. The cuticular profile of the aristiform hair as a characteristic feature of Abrawayaomys (Rodentia: Cricetidae

    Directory of Open Access Journals (Sweden)

    Tarcísio de Souza Duarte

    2015-08-01

    Full Text Available ABSTRACT The cuticle is the outermost of the three cellular layers of the mammalian hair. It comprises numerous keratinized scales, whose morphology, combined with other microscopic characteristics of the hair, confers characteristic signature traits to various different species. This study aimed to analyze whether the cuticular patterns of the aristiform hair had any signature implications for the two species of the genus Abrawayaomys Cunha & Cruz, 1979. We identified the cuticular profiles of A. ruschi and A. chebezi. Both species have similar hair pattern. The base of the hair shows "irregular waved" scales with smooth and continuous edges, and the apex showed "transversal waved" small-sized scales with continuous and ornamented edges. The middle portion of the hair exhibits different cuticular patterns on different sides of a single hair follicle: "transversal waved" on the dorsal side and "narrow losangled" on the ventral side. This distribution pattern of the cuticular scales is an unprecedented record for any mammal, and it is an important generic feature that allows the identification of single samples, such as those found in predators' gastrointestinal contents. The species in question are considered rare due to the restricted number of specimens deposited in scientific collections. Our findings may contribute to expanding the species' geographic range by making it possible to identify it in various situations. These results highlight the relevance of studies pertaining the identification of the micromorphology of the aristiform hair, which can be used as a tool to accurately identify rodents.

  13. The cuticular profile of the aristiform hair as a characteristic feature of Abrawayaomys (Rodentia: Cricetidae)

    OpenAIRE

    Tarcísio de Souza Duarte; Gisele Lessa

    2015-01-01

    ABSTRACT The cuticle is the outermost of the three cellular layers of the mammalian hair. It comprises numerous keratinized scales, whose morphology, combined with other microscopic characteristics of the hair, confers characteristic signature traits to various different species. This study aimed to analyze whether the cuticular patterns of the aristiform hair had any signature implications for the two species of the genus Abrawayaomys Cunha & Cruz, 1979. We identified the cuticular profiles ...

  14. Ecomorphological characterization of Murinae and hypsodont “Cricetidae” (Rodentia) from the Iberian Plio-Pleistocene

    OpenAIRE

    Hernández Fernández, M.; Peláez-Campomanes, Pablo

    2003-01-01

    [EN] In order to make inferences on the climatic range of extinct rodent genera, cluster analysis using dental morphological variables is performed. The goal of this study is to obtain rodent groupings which relate extinct an extant rodent genera on the basis of the ecomorphology of the dentition. The method is applied to two rodent groups, Murinae and hypsodont “Cricetidae” from the Iberian Plio- Pleistocene. The results show that dental morphology of the Plio-Pleistocene Murinae fr...

  15. Ecomorphological characterization of Murinae and hypsodont “Cricetidae” (Rodentia) from the Iberian Plio-Pleistocene

    OpenAIRE

    Hernández Fernández, Manuel; Peláez-Campomanes de Labra, Pablo

    2003-01-01

    In order to make inferences on the climatic range of extinct rodent genera, cluster analysis using dental morphological variables is performed. The goal of this study is to obtain rodent groupings which relate extinct an extant rodent genera on the basis of the ecomorphology of the dentition. The method is applied to two rodent groups, Murinae and hypsodont “Cricetidae” from the Iberian Plio- Pleistocene. The results show that dental morphology of the Plio-Pleistocene Murinae from the Iber...

  16. Helminths parasitizing the silvery mole-rat, Heliophobius argenteocinereus (Rodentia : Bathyergidae) from Malawi

    Czech Academy of Sciences Publication Activity Database

    Tenora, F.; Baruš, Vlastimil; Prokeš, Miroslav; Šumbera, R.; Koubková, B.

    2003-01-01

    Roč. 40, č. 3 (2003), s. 153-160. ISSN 0440-6605 R&D Projects: GA AV ČR IAA6093104; GA ČR GA206/00/1699 Institutional research plan: CEZ:AV0Z6093917 Keywords : Bathyergidae * helminth s * Malawi Subject RIV: EG - Zoology Impact factor: 0.474, year: 2003

  17. On the Mole-Rat (Cryptomys Hottentotus Damarensis (Rodentia in the Kalahari Gemsbok National Park

    Directory of Open Access Journals (Sweden)

    G de Graaff

    1972-01-01

    Full Text Available Aspects of the ecology and distribution of the Damara mole-rat (Cryptomys hottentotus damarensis are discussed relative to its life in the arid Kalahari Gemsbok National Park. The value of coat colour as a taxonomic criterion for the subspecies is discussed. Notes are also presented on reproduction, aspects of behaviour such as: habitat, nests, orientation, activity, locomotion, voice, food, feeding and social life, symbiosis, commensalism, parasites and predators.

  18. Nine karyomorphs for spiny rats of the genus Proechimys (Echimyidae, Rodentia from North and Central Brazil

    Directory of Open Access Journals (Sweden)

    Taís Machado

    2005-12-01

    Full Text Available Spiny rats of the genus Proechimys are morphologically diverse, widely distributed and have diploid numbers ranging from 2n = 14-16 to 2n = 62. In this paper we present cytogenetical data and brief comments on morphological and biogeographical issues related to spiny rats. In our sample of 42 spiny rats collected from 12 Brazilian Amazonian tropical rainforest and the Cerrado (Brazilian savanna sites we detected nine karyological entities: four different karyomorphs with 2n = 30, three with 2n = 28, one with 2n = 15 and one with 2n = 44. Based on qualitative morphological characters these karyomorphs can be allocated to five species within the goeldii, guyannensis and longicaudatus species groups.

  19. The comparative gastrointestinal morphology of Jaculus jaculus (Rodentia) and Paraechinus aethiopicus (Erinaceomorpha).

    Science.gov (United States)

    Pereira, Daniella L; Walters, Jacklynn; Bennett, Nigel C; Alagaili, Abdulaziz N; Mohammed, Osama B; Kotzé, Sanet H

    2016-05-01

    Jaculus jaculus (Lesser Egyptian jerboa) and Paraechinus aethiopicus (Desert hedgehog) are small mammals which thrive in desert conditions and are found, among others, in the Arabian Peninsula. Jaculus jaculus is omnivorous while P. aethiopicus is described as being insectivorous. The study aims to describe the gastrointestinal tract (GIT) morphology of these animals which differ in diet and phylogeny. The GITs of J. jaculus (n = 8) and P. aethiopicus (n = 7) were weighed, photographed, and the length, basal surface areas, and luminal surface areas of each of the anatomically distinct gastrointestinal segments were determined. The internal aspects of each area were examined and photographed while representative histological sections of each area were processed to wax and stained using haematoxylin and eosin. Both species had a simple unilocular stomach which was confirmed as wholly glandular on histology sections. Paraechinus aethiopicus had a relatively simple GIT which lacked a caecum. The caecum of J. jaculus was elongated, terminating in a narrow cecal appendix which contained lymphoid tissue on histological examination. The internal aspect of the proximal colon of J. jaculus revealed distinct V-shaped folds. Stomach content analysis of J. jaculus revealed mostly plant and seed material and some insects, whereas P. aethiopicus samples showed plant material in addition to insects, indicating omnivorous feeding tendencies in areas where insects may be scarce. PMID:26968578

  20. The complete mitochondrial genome of the bank vole Clethrionomys glareolus ( Rodentia: Arvicolinae)

    Czech Academy of Sciences Publication Activity Database

    Bendová, Karolína; Marková, Silvia; Searle, J. B.; Kotlík, Petr

    2016-01-01

    Roč. 27, č. 1 (2016), s. 111-112. ISSN 1940-1736 R&D Projects: GA ČR GAP506/11/1872; GA AV ČR IAA600450901 Institutional support: RVO:67985904 Keywords : mtDNA capture * Myodes glareolus * phylogeography Subject RIV: EG - Zoology Impact factor: 1.209, year: 2014

  1. Heavy metals in the silvery mole-rat, Heliophobius argenteocinereus (Bathyergidae, Rodentia) from Malawi

    Czech Academy of Sciences Publication Activity Database

    Šumbera, R.; Baruš, Vlastimil; Tenora, F.

    2003-01-01

    Roč. 52, č. 2 (2003), s. 149-153. ISSN 0139-7893 R&D Projects: GA ČR GA206/00/1699; GA AV ČR KSK6005114 Institutional research plan: CEZ:AV0Z6093917 Keywords : heavy metals * rodents * bioaccumulation Subject RIV: EG - Zoology Impact factor: 0.494, year: 2003 http://www.ivb.cz/folia/52/2/149-153.pdf

  2. Morphogenesis of palatal ridges in the golden hamster (Mesocricetus auratus, Rodentia)

    Czech Academy of Sciences Publication Activity Database

    Buchtová, M.; Matulová, Petra; Witter, K.; Tichý, F.

    2005-01-01

    Roč. 74, č. 3 (2005), s. 319-327. ISSN 0001-7213 R&D Projects: GA MŠk OC B23.001 Institutional research plan: CEZ:AV0Z50450515 Keywords : oral cavity Subject RIV: EB - Genetics ; Molecular Biology Impact factor: 0.353, year: 2005

  3. Biometric analysis and taxonomic allocation of Pleistocene Hystrix specimens (Rodentia, Porcupines) from China

    NARCIS (Netherlands)

    Weers, van D.J.; Shaohua, Zheng

    1998-01-01

    Early to Middle Pleistocene Hystrix material in the collections of the IVPP in Beijing, has been biometrically studied and compared with other fossil and extant species. The specimens are from Zhoukoudian (Beijing), the Liucheng Gigantopithecus cave (Guangxi) and other caves in that province, the Wa

  4. Examination of rodents (Rodentia) for emmonsiosis in the Czech Republic, Israel and Africa

    Czech Academy of Sciences Publication Activity Database

    Svobodová, Petra; Pejčoch, M.; Heroldová, Marta; Pavlíček, T.; Nevo, E.; Šumbera, R.; Hubálek, Zdeněk

    2009-01-01

    Roč. 61, č. 1 (2009), s. 99-106. ISSN 1211-0981 Institutional research plan: CEZ:AV0Z60930519 Keywords : Emmonsia * adiaspiromycosis * adiasporomycosis * lung tissue Subject RIV: FN - Epidemiology, Contagious Diseases ; Clinical Immunology http://web.natur.cuni.cz/cvsm/CM61106.pdf

  5. A pheasantry as the habitat of small terrestrial mammals (Rodentia, Insectivora) in southern Moravia (Czech Republic)

    Czech Academy of Sciences Publication Activity Database

    Suchomel, J.; Heroldová, Marta

    2007-01-01

    Roč. 53, č. 4 (2007), s. 185-191. ISSN 1212-4834 Grant ostatní: GA ČR(CZ) GP526/03/P051 Institutional research plan: CEZ:AV0Z60930519 Keywords : pheasantry * diversity * small terrestrial mammals Subject RIV: EH - Ecology, Behaviour http://journals.uzpi.cz:8050/uniqueFiles/00162.pdf/

  6. Morphological and Biometrical Comparisons of Mesocricetus Nehring, 1898 (Mammalia: Rodentia) species distributed in the Palaearctic Region

    OpenAIRE

    Nuri YIĞIT; ÇOLAK, Ercüment; GATTERMANN, Rolf; Neumann, Karsten; ÖZKURT, Şakir

    2006-01-01

    Currently, 4 species, Mesocricetus auratus, Mesocricetus raddei, Mesocricetus newtoni, and Mesocricetus brandti of the genus Mesocricetus are accepted as the valid taxa based on karyotype and morphologic features. A potential fifth species, Mesocricetus nigriculus, is under dispute and is currently listed as a subspecies of M. raddei, along with Mesocricetus raddei raddei and Mesocricetus raddei avaricus. UPGMA cluster analyses performed with biometrical measures confirm, only partially, the ...

  7. Multilocus phylogeny of arvicoline voles (Arvicolini, Rodentia) shows small tree terrace size

    Czech Academy of Sciences Publication Activity Database

    Martínková, Natália; Moravec, J.

    2012-01-01

    Roč. 61, 3-4 (2012), s. 254-267. ISSN 0139-7893 R&D Projects: GA AV ČR IAA600930609 Institutional support: RVO:68081766 Keywords : divergence * evolutionary history * supertree * supermatrix * phylogenetic tree terrace * Microtus * Arvicolinae Subject RIV: EG - Zoology Impact factor: 0.494, year: 2012

  8. Evolutionary history of tree squirrels (Rodentia, Sciurini) based on multilocus phylogeny reconstruction

    Czech Academy of Sciences Publication Activity Database

    Pečnerová, P.; Martínková, Natália

    2012-01-01

    Roč. 41, č. 3 (2012), s. 211-219. ISSN 0300-3256 Institutional research plan: CEZ:AV0Z60930519 Keywords : phylogeny * Sciurus * biogeography * colonisation Subject RIV: EG - Zoology Impact factor: 2.793, year: 2012

  9. Evolutionary systematics and biogeography of endemic gerbils (Rodentia, Muridae) from Morocco: an integrative approach

    Czech Academy of Sciences Publication Activity Database

    Ndiaye, A.; Ba, K.; Aniskin, V. M.; Benazzou, T.; Chevret, P.; Konečný, Adam; Sembene, M.; Tatard, C.; Kergoat, G. J.; Granjon, L.

    2012-01-01

    Roč. 41, č. 1 (2012), s. 11-28. ISSN 0300-3256 R&D Projects: GA AV ČR IAA6093404 Institutional research plan: CEZ:AV0Z60930519 Keywords : geometric morphometrics * Middle Pleistocene * African gerbils * West Africa * taxonomy Subject RIV: EG - Zoology Impact factor: 2.793, year: 2012

  10. Evolutionary history and species diversity of African pouched mice (Rodentia: Nesomyidae: Saccostomus)

    Czech Academy of Sciences Publication Activity Database

    Mikula, Ondřej; Šumbera, R.; Aghová, Tatiana; Mbau, J. S.; Katakweba, A. S.; Sabuni, C. A.; Bryja, Josef

    (2016). ISSN 0300-3256 R&D Projects: GA ČR GAP506/10/0983; GA ČR GA15-20229S Institutional support: RVO:68081766 Keywords : Saccostomus * phylogeny * phylogeography * Plio-Pleistocene climate changes * taxonomic revision * Nesomyidae * Cricetomyinae Subject RIV: EG - Zoology Impact factor: 3.224, year: 2014

  11. Sequencing and analysis of complete mitochondrial genome of Apodemus draco (Rodentia: Arvicolinae).

    Science.gov (United States)

    Wei, Haixue; Jia, Qiang; Li, Fengjun; Liu, Yongcheng; Chen, Shunde; Yong, Bin

    2016-07-01

    The genus Apodemus are the most common small rodents in fields. They are also one of the best species for biogeographic study and understanding the environmental changes. In this study, the complete mitochondrial genome sequence of Apodemus draco is determined. The mitogenome is 16 220 bp in length and contains 13 protein-coding genes, 2 ribosomal RNA genes, 22 transfer RNA genes and a control region, with a base composition of 35.1% A, 29.0% T, 23.8% C and 12.1% G. The nucleotide sequence data of 12 heavy-strand protein-coding genes of Apodemus draco and other 23 rodents were used for mitochondrial genome phylogenetic analyses. The monophyly of the genus Apodemus was well supported with sister to the genus Mus. Bayesian analysis also suggested that Apodemus draco was a sister to Apodemus latronum. The present study may facilitate further investigation of the molecular evolution and biogeographic study of the genus Apodemus. PMID:27158789

  12. Discongruence of Mhc and cytochrome b phylogeographical patterns in Myodes glareolus (Rodentia: Cricetidae)

    Czech Academy of Sciences Publication Activity Database

    Malé, P.-J, G.; Martin, J.-F.; Galan, M.; Deffontaine, V.; Bryja, Josef; Cosson, J.-F.; Michaux, J.; Charbonnel, N.

    2012-01-01

    Roč. 105, č. 4 (2012), s. 881-899. ISSN 0024-4066 Grant ostatní: 6th Framework Programme(XE) GOCE-2003-010284 EDEN Source of funding: R - rámcový projekt EK Keywords : balancing selection * bank voles * diversity * immunogenetics * molecular epidemiology * Puumala hantavirus * zoonoses Subject RIV: EG - Zoology Impact factor: 2.413, year: 2012

  13. Are ribosomal DNA clusters rearrangement hotspots? A case study in the genus Mus (Rodentia, Muridae

    Directory of Open Access Journals (Sweden)

    Douzery Emmanuel JP

    2011-05-01

    Full Text Available Abstract Background Recent advances in comparative genomics have considerably improved our knowledge of the evolution of mammalian karyotype architecture. One of the breakthroughs was the preferential localization of evolutionary breakpoints in regions enriched in repetitive sequences (segmental duplications, telomeres and centromeres. In this context, we investigated the contribution of ribosomal genes to genome reshuffling since they are generally located in pericentromeric or subtelomeric regions, and form repeat clusters on different chromosomes. The target model was the genus Mus which exhibits a high rate of karyotypic change, a large fraction of which involves centromeres. Results The chromosomal distribution of rDNA clusters was determined by in situ hybridization of mouse probes in 19 species. Using a molecular-based reference tree, the phylogenetic distribution of clusters within the genus was reconstructed, and the temporal association between rDNA clusters, breakpoints and centromeres was tested by maximum likelihood analyses. Our results highlighted the following features of rDNA cluster dynamics in the genus Mus: i rDNA clusters showed extensive diversity in number between species and an almost exclusive pericentromeric location, ii a strong association between rDNA sites and centromeres was retrieved which may be related to their shared constraint of concerted evolution, iii 24% of the observed breakpoints mapped near an rDNA cluster, and iv a substantial rate of rDNA cluster change (insertion, deletion also occurred in the absence of chromosomal rearrangements. Conclusions This study on the dynamics of rDNA clusters within the genus Mus has revealed a strong evolutionary relationship between rDNA clusters and centromeres. Both of these genomic structures coincide with breakpoints in the genus Mus, suggesting that the accumulation of a large number of repeats in the centromeric region may contribute to the high level of chromosome repatterning observed in this group. However, the elevated rate of rDNA change observed in the chromosomally invariant clade indicates that the presence of these sequences is insufficient to lead to genome instability. In agreement with recent studies, these results suggest that additional factors such as modifications of the epigenetic state of DNA may be required to trigger evolutionary plasticity.

  14. Chromosomal and C-heterochromatin Characterization of Arvicanthis niloticus (Rodentia: Murinae in Egypt

    Directory of Open Access Journals (Sweden)

    Mahmoud I. Shoulkamy

    2006-01-01

    Full Text Available The karyotype and C-banding pattern of the unstriped grass rat Arvicanthis niloticus from four localities in Egypt are presented. All individuals karyotyped, as a rule, have the same diploid number of 2n = 62 and autosomal Fundamental Number of aFN = 62. In addition, all chromosomes have a large centromeric block of fairly uniform size. However, an additional interstitial or telomeric small C-band is scored in some chromosomes. Nevertheless, frequent heteromorphism in the morphology and heterochromatin content of both the homologous chromosomes of the pair No. 1 and the X chromosome are scored in some individuals from the four localities and led to an aFN = 63. Accordingly, four forms or cytotypes, namely ANI-1a, ANI-1b, ANI-1c and ANI-1d, are recognized based on this variation, which is mostly attributed either to addition or deletion of a heterochromatic segment as a result of pericentric inversions. Of these four forms, the ANI-1a is considered ancestral for A. niloticus in Egypt and is closely similar to that of the Ethiopian A. dembeensis, regardless the contradiction concerned with nomenclature of the X chromosome, while the karyotypes of the other forms are synapomorphy of the form ANI-1a and showed as well a relative resemblance to those of the Ethiopian A. abyssinicus and A. blicki. Therefore, it is concluded that the genus Arvicanthis would be represented by an Egyptian-Ethiopian radiation (A. niloticus, A. dembeensis, A. abyssinicus and A. blicki and by a Central-Western African one, including the karyotypes described as A. centralis and A. solatus. Moreover, A. niloticus should be regarded no longer as a single species but as a cluster of several proper species.

  15. A new species of Calomys Waterhouse (Rodentia, Sigmodontinaefrom the Cerrado of Central Brazil

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    Cibele R. Bonvicino

    2003-06-01

    Full Text Available A new Brazilian Calomys Waterhouse, 1837 species is described based on morphologic and karyologic data. This species is endemic to the Cerrado of Central Brazil and allopatric with all other species of the genus Calomys. Its chromosome complement (2n = 46, AN = 66 is different from those described in other Calomys species. Morphometric analysis significantly distinguished this new species from other Calomys of the Brazilian fauna like C. callosus (Renger, 1830, C. expulsus (Lund, 1841 and C. tener (Winge, 1887 and placed it among the large-sized Calomys.

  16. G- and C-Banded Karyotype of Cricetulus migratorius Pallas, 1773 (Mammalia: Rodentia) in Central Anatolia

    OpenAIRE

    ARSLAN, Atilla; AKAN, Şükrüye

    2008-01-01

    The present study reports the banding patterns (G- and C-banding) of chromosomes of Cricetulus migratorius from Central Anatolia. Karyotype of C. migratorius comprised (2n) 22 chromosomes. The number of chromosomal arms (FN) was 44 and the number of autosomal arms (FNa) was 40. Subtelocentric X and Y chromosomes were very similar in size, but they differed on G- and C-banding patterns. Most autosomes in this species were C-negative. Pair no. 4 had very small centromeric C-bands, autosome no. ...

  17. Small mammals (insectivora, rodentia) in the area of the barrage system Gabcikovo

    International Nuclear Information System (INIS)

    The community structure of small mammals living in the within-dike zone indicates that the species typical for the ecosystems survive there up to present. The conditions in the monitored area remain still within the limits of ecological tolerance of the studied species. The number of individuals of the species occurring in the monitored localities varied within the limits of the amplitude of their population fluctuation cycles. With regard to the rather wide amplitude of fluctuation cycles of the small mammal populations and their length taking usually 4-6 years, the significant data concerning the influence of the changed hydrological regime on the small mammals in this area can be obtained not earlier than after 10-15 years. (authors). 1 tabs., 2 figs., 2 refs

  18. Ultrasonic vocalization and body temperature maintenance in infant voles of three species (Rodentia: Arvicolidae).

    Science.gov (United States)

    Blake, B H

    1992-12-01

    Infant voles thermoregulate poorly and produce ultrasonic vocalizations when cooled. Vocalizing and the ability to maintain body temperature in isolated pups cold-challenged at 5 degrees C or 22 degrees C were studied in nestling Clethrionomys glareolus, Microtus agrestis, and Arvicola terrestris. The tendency to vocalize varied with age, since pups vocalized more in their 2nd week than in their 1st or 3rd weeks. Rate of vocalizing was correlated with sound pressure level of vocalizations. Their was no apparent relation between vocalizing rate and deep body temperature. M. agrestis pups vocalized most and A. terrestris pups least, and all three species vocalized more at the lower temperature. Maximal vocalizing occurred in mid aged M. agrestis (at 5 degrees C) with mean of 1291 vocalizations/20 min and mean SPL of 80 dB (decibels re: 20 microN/m2). It is suggested that the vocalizing response is an adaptation related to risk from hypothermia in infant voles. PMID:1487083

  19. Note on the Giant Woolly Gliding Squirrel Eupetaurus cinereus (Mammalia: Rodentia: Sciuridae in northern Pakistan

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    Jaffar Ud Din

    2015-07-01

    Full Text Available The Woolly Gliding Squirrel Eupetaurus cinereus is an extremely rare, localized, and endangered mammal and may constitute one of the endemic species of Pakistan. The species was rediscovered in northern Pakistan in the mid-1990s after a 70-year absence of records. All the previous information regarding this giant squirrel was limited to museum specimens, collected mostly from areas presently in northern Pakistan in the late 1800s. Sighting of the species is extremely challenging owing to its nocturnal behavior, low densities and the inhospitable terrain it is reported from. Here we report detailed information about the species collected during the rescue of a young male individual from Gilgit City followed by its successful release in its natural habitat. We report that the species is still facing human-induced threats and may disappear from the mountains of northern Pakistan if informed management measures are not taken. Moreover, the occurrence of the species outside its core distribution range, i.e., districts Gilgit and Diamer, still remains questionable; therefore, it is recommended that further in-depth research studies be undertaken to determine the status of the species across the entire reported range. 

  20. Dental microwear patterns of extant and extinct Muridae (Rodentia, Mammalia): ecological implications

    Science.gov (United States)

    Gomes Rodrigues, Helder; Merceron, Gildas; Viriot, Laurent

    2009-04-01

    Extant species of Muridae occupy a wide array of habitats and have diverse dietary habits. Consequently, their dental microwear patterns represent a potential clue to better understand the paleoecology of their extinct relatives, which are abundant in many Old World Neogene localities. In this study, dental microwear is investigated for specimens of 17 extant species of murine and deomyine rodents in order to test the reliability of this method and infer dietary preferences on the fossil species Saïdomys afarensis. This extinct form comes from a mid-Pliocene site (AL 327) located at the Hadar Formation (Ethiopia) known to have delivered many hominid specimens of Australopithecus afarensis. A significant correlation between microwear patterns and diet is detected. Thus, grass, fruit, and insect eaters display, respectively, high amounts of fine scratches, wide scratches, and large pits. Moreover, some aspects of the paleoecology of S. afarensis, including feeding habits, could be assessed in regard to its dental microwear pattern. Indeed, it probably had feeding habits similar to that of living grass eaters. These results concur with the presence of open to woodland areas covered by an herbaceous vegetal layer, including monocotyledons, in the vicinity of this mid-Pliocene locality.

  1. Physiological damage in Algerian mouse Mus spretus (Rodentia, Muridae) exposed to crude oil

    OpenAIRE

    Flavio M.R. Da Silva Júnior; RITA I. MONARCA; DEODÁLIA DIAS; MARIA G. RAMALHINHO; MARIA L. MATHIAS; Ana L. Muccillo-Baisch

    2012-01-01

    Small mammals have been used to predict ecotoxicological damage caused by metals in field studies and laboratory exposure. In natural ecosystems, rodents play an important role either as seed dispersers or food providers for various predators since they represent intermediate links in the food chain. Several studies have already focused on the effects of metals on wild rodents, but data provided on the effects of organic contaminants, such as crude oil, are scarce. Among the possible biologic...

  2. Morphology of the tongue and characteristics of lingual papillae in Cuniculus paca (Rodentia: Cuniculidae

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    André Luiz Quagliatto Santos

    2013-11-01

    Full Text Available This paper describes the morphology of the tongue, its extrinsic muscles, and the characteristics of lingual papillae in Cuniculus paca. We used fifteen specimens from the Wild Animals Sector of Universidade Estadual Paulista (UNESP. In this species, the tongue is divided into three regions: root, body, and apex. The latter is delimited by the lingual frenum, which has the aspect of fibrous membrane. We also identified a median groove and a prominence on its dorsal surface. The extrinsic tongue muscles are the styloglossus, hyoglossus, genioglossus, geniohyoid, and milohyoid, the latter two are inserted into the hyoid apparatus. As for the presence of lingual papillae, we observed five papillae types in all specimens: filiform, fungiform, vallate, foliate, and conic. The filiform papillae are distributed throughout the apex surface and tongue body. They are caudally inclined throughout the body, until they are modified in the root region and form the conic papillae. The fungiform papillae are distributed in a large amount on the lingual apex, between the filiform papillae. This papilla type has a mushroom-like shape. Only two vallate papillae are located in the caudal portion of the lingual root, and they have an oval shape and are surrounded by a deep groove. The foliate papillae are observed in parallel grooves or slots located in the lateral portion of the tongue, between the vallate papillae and half of the intermolar prominence. In the tongue root, body, and apex we observed keratinized squamous stratified epithelium lining both the lingual papillae and the surface between them.

  3. Modulation of parasitemia and antibody responce to Trypanosoma cruzy by cyclophosphamide in Calomys callosus (Rodentia, Cricetidae Modulação da parasitemia e da resposta de anticorpos ao Trypanosoma cruzi pela ciclofosfamida em Calomys callosus (Rodentia, Cricetidae

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    Monamaris Marques Borges

    1992-02-01

    Full Text Available Calomys callosus a wild rodent, previously described as harboring Trypanosoma cruzi, has a low susceptibility to infection by this protozoan. Experiments were designed to evaluate the contribution of the immune response to the resistance to T. cruzi infection exhibited by C. calossus. Animals were submitted to injections of high (200 mg/kg body weight and low (20 mg/kg body weight doses of cyclophosphamide on days -1 or -1 and +5, and inoculated with 4 x 10³ T. cruzi on day O. Parasitemia, mortality and antibody response as measured by direct agglutination of trypomastigotes were observed. Two hundred mg doses of cyclophosphamide resulted in higher parasitemia and mortality as well as in suppression of the antibody response. A single dose of 20 mg enhanced antibody levels on the 20th day after infection, while an additional dose did not further increase antibody production. Parasitemia levels were not depressed, but rather increased in both these groups as compared to untreated controls. Passive transfer of hyperimmune C. callosus anti-T. cruzi serum to cyclophosphamide immunosuppressed animals resulted in lower parasitemia and mortality rates. These results indicate that the immune response plays an important role in the resistance of C. callossus to T. cruzi.Calomys-callosus, roedor silvestre, que já foi encontrado naturalmente infectado pelo Trypanosoma cruzi, tem baixa suscetibilidade à infecção experimental por este protozoário. Foram feitos experimentos para avaliar a contribuição da resposta imune a essa baixa suscetibilidade. Animais foram submetidos a injeção de doses altas (200 mg/kg peso corporal ou doses baixas (20 mg/kg peso corporal de ciclofosfamida nos dias -1 ou -1 e +5, e inoculados com 4 x 10³ T. cruzi no dia O. Observou-se a curva de parasitemia, mortalidade e resposta de anticorpos medida por aglutinação direta de tripomastigotas. Doses de 200 mg resultaram em parasitemia e mortalidade mais elevada e supressão da resposta de anticorpos. Uma dose de 20 mg aumentou os níveis de anticorpos no 20º dia após a infecção, enquanto a administração de uma segunda dose não alterou significativamente a produção de anticorpos. Os níveis de parasitemia não diminuíram, mas pelo contrário, elevaram-se em relação aos animais testemunhos, em ambos os grupos. A transferência passiva de soro anti-T. cruzi de C. callosus resultou em parasitemia e mortalidade mais baixa nos animais imunossuprimidos. Estes resultados indicam que a resposta imune é um importante fator na resistência de C. callosus à infecção por T. cruzi.

  4. Impacto del castor (Castor canadensis, Rodentia) en bosques de lenga (Nothofagus pumilio) de Tierra del Fuego, Chile Impact of american beaver (Castor canadensis, Rodentia) in lenga (Nothofagus pumilio) forests of Tierra del Fuego, Chile

    OpenAIRE

    Aida Baldini U; Juan Oltremari A; Mauricio Ramírez

    2008-01-01

    Castor canadensis es un roedor de Norteamérica introducido a la porción argentina de Tierra del Fuego en el año 1946, invadiendo territorios chilenos del mismo sector. En esta zona los castores construyen diques y se alimentan de material arbóreo extraído principalmente de Nothofagus pumilio. En el estudio se intentó probar que los castores provocan daño en la biomasa y volumen de los bosques de N. pumilio. Los objetivos del estudio fueron identificar los tipos de daños y cuantificar las pérd...

  5. Temporal dynamics of milk composition of the precocial caviomorph Octodon degus (Rodentia: Octodontidae Dinámica temporal de la composición de la leche del caviomorfo precocial Octodon degus (Rodentia: Octodentidae

    Directory of Open Access Journals (Sweden)

    CLAUDIO VELOSO

    2005-06-01

    Full Text Available During lactation, both the nutritional and energetic requirements of suckling change gradually. These changes normally are accompanied by modifications in chemical composition of the milk. We investigated the temporal course of milk composition during lactation in a precocial caviomorph rodent, the "degu" (Octodon degus under laboratory condition. Female degus were kept in laboratory during gestation and lactation and fed with commercial food pellets. Milk was collected at three stages of lactation: early (days 5-8, n = 12, middle (days 15-21, n = 7 and late (days 26-40, n = 6, and analyzed for protein, carbohydrates, lipids, ash, total solids and energy. On average, carbohydrates decreased from 3.1 ± 0.3 % (early to 1.1 ± 0.3 % (late during lactation; lipids, protein, ash, total solids and energy remained about the same. Lipids, the main component of the milk, were 17.3 % and protein remained near 4.4 %. Over lactation, total energy concentration of milk remained near 4.0 kJ mL-1. The maintenance of milk composition during lactation may be related to the initially high energetic and nutritional requirements associated with a precocial reproductive modeDurante la lactancia, tanto los requerimientos energéticos como nutricionales de las crías cambian gradualmente. Estos cambios normalmente van acompañados por modificaciones en la composición química de la leche. Se investigaron los cambios temporales de la composición de la leche durante la lactancia en el roedor caviomorfo precocial "degu" (Octodon degus bajo condiciones de laboratorio. Las hembras de degu fueron mantenidas en el laboratorio durante preñez y lactancia, y fueron alimentadas con alimento comercial de conejo. La leche fue colectada en tres estados de lactancia: temprana (días 5-8, n = 12, media (días 15-21, n = 7 y tardía (días 26-40, n = 6, y analizadas para proteínas, hidratos de carbono, lípidos, ceniza, sólidos totales y energía. En promedio, los hidratos de carbono disminuyen desde 3,1 ± 0,3 % (temprana hasta 1,1 ± 0,3 % (tardía durante la lactancia; mientras que, los lípidos, las proteínas, la ceniza, los sólidos totales y la energía se mantienen relativamente constantes. Los lípidos, el principal constituyente de la leche fue de 17,3 % y las proteínas correspondieron al 4,4 %. Durante la lactancia, la concentración de energía total de la leche permaneció cerca de los 4,0 kJ mL-1. La mantención de la composición de la leche durante la lactancia puede estar relacionada con los altos requerimientos energéticos y nutricionales asociados al modo reproductivo precocial

  6. Habitat use and relative abundance of the Spotted Paca Cuniculus paca (Linnaeus, 1766 (Rodentia: Cuniculidae and the Red-rumped Agouti Dasyprocta leporina (Linnaeus, 1758 (Rodentia: Dasyproctidae in Guatopo National Park, Venezuela

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    Elinor Jax

    2015-01-01

    Full Text Available The Spotted Paca Cuniculus paca and the Red-rumped Agouti Dasyprocta leporina are affected by habitat loss and hunting.  In Venezuela, their conservation status is unknown, even within protected areas.  The objective of this study was to estimate the relative abundance, activity patterns, habitat use, and effect of human activities on these species in Venezuela.  To achieve this, 26 camera-trap stations (20.8km2 were established in Guatopo National Park between February and April 2011, characterization of the habitat was undertaken and occupancy models were created.  The relative abundance of the Spotted Paca was 1.62 captures/100trap-nights, with a fully nocturnal activity pattern.  The relative abundance of the Red-rumped Agouti was 2.32 captures/100trap-nights, with a pronounced diurnal activity pattern. The occupation probability of the Red-rumped Agouti (0.61 SE 0.02 was higher than that of the Spotted Paca (0.27 SE 0.02. Spotted Pacas were mainly found in areas with mature forest and high tree density, whereas the  Red-rumped Agoutis were most frequently found in valleys with little disturbed forest.  A positive correlation was found between illegal hunting activities and areas occupied by the Spotted Paca.  It is important to strengthen the park control measurements to reduce illegal hunting of Spotted Pacas.

  7. Dietas de Abrothrix andinus, Phyllotis xanthopygus (Rodentia y Lepus europaeus (Lagomorpha en un ambiente altoandino de Chile Feeding habits of Abrothrix andinus, Phyllotis xanthopygus (Rodentia and Lepus europaeus (Lagomorpha in an Andean environment of Chile

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    FRANCISCO LÓPEZ-CORTÉS

    2007-03-01

    Full Text Available Los roedores nativos Abrothrix andinus, Phyllotis xanthopygus y el lagomorfo introducido Lepus europaeus, coexisten en ambientes altoandinos del centro-norte de Chile, donde la disponibilidad de alimento es escasa y distribuida heterogéneamente en el paisaje. Propusimos que en estos ambientes las especies en estudio se comportarían como herbívoros generalistas y que existiría una alta sobreposición en la dieta entre la liebre y los roedores nativos. El objetivo de este trabajo fue documentar la composición de la dieta de las tres especies y determinar su amplitud, preferencia y sobreposición en la dieta a partir del análisis microhistológico de heces frescas. Los resultados indican que las tres especies se comportaron como herbívoros-folívoros, siendo la dieta de L. europaeus la de mayor amplitud trófica. Abrothrix andinus seleccionó todos los ítemes que consume, mientras que P. xanthopygus y L. europaeus realizaron un consumo más oportunista. La mayor sobreposición en la dieta se observó entre los roedores nativosThe native rodents Abrothrix andinus, Phyllotis xanthopygus and the introduced lagomorph Lepus europaeus coexist in the highlands of north-central Chile, where food availability is scarce. We hypothesized that in these environments, the studied species would behave as generalist herbivores and where the diet of native rodents would overlap that of hares greatly. The aim of this study was to quantify feeding habits, amplitude, diet preferences and overlap of these three species through microhistological analysis of fresh faeces. While all three species behaved as herbivore-folivores, L. europaeus showed the largest niche breath. Abrothrix andinus selected all consumed items, while P. xanthopygus and L. europaeus exhibited a more opportunistic consumption food items. The highest diet overlap was observed between native rodents

  8. Dieta de Sciurus ingrami Thomas (Rodentia, Sciuridae em um remanescente de Floresta com Araucária, Paraná, Brasil Diet of Sciurus ingrami Thomas (Rodentia, Sciuridae on a Araucauria Pine Forest remnant, Paraná, Brazil

    Directory of Open Access Journals (Sweden)

    João M. D. Miranda

    2005-12-01

    Full Text Available Este estudo foi realizado entre fevereiro de 2002 e janeiro de 2003, em um remanescente de Floresta com Araucária, localizado no Distrito do Bugre, Município de Balsa Nova, Paraná, Brasil. O objetivo foi conhecer as espécies utilizadas na alimentação por Sciurus ingrami Thomas, 1901 no decorrer de um ano. Foram registradas dez (N = 10 espécies na dieta dos serelepes, pertencentes a sete famílias botânicas. Os serelepes predaram sementes de três espécies e se alimentaram de três espécies exóticas, mostrando adaptabilidade a ambientes alterados.This study was conducted between February, 2002 and January, 2003 in a remnant of Araucaria Pine Forest located in the District of Bugre, Municipality of Balsa Nova, Paraná, Brazil. The goal of this study was to survey the species used as food items by Sciurus ingrami Thomas, 1901 throughout a year. Ten (N = 10 species were recorded in the diet of these squirrels, belonging to seven plant families. Squirrels preyed on seeds of three plant species and fed on three exotic species, indicating good adaptability to disturbed habitats.

  9. MYOCASTOR COYPUS (“COIPO”, RODENTIA, MAMMALIA COMO RECURSO EN LOS HUMEDALES DE LA PAMPA BOANERENSE: PATRONES DE EXPLOTACIÓN/Myocastor coypus (“coipo”, Rodentia, Mammalia as an archaeological resource in the wetlands of Buenos Aires Pampas: exploitation

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    Paula Escosteguy

    2012-11-01

    Full Text Available Myocastor coypus es una de las especies más abundantes en los humedales de la región pampeana, particularmente en las cuencas de los ríos Salado y Paraná. Distintas líneas de evidencia permiten sostener que fue un recurso ampliamente aprovechado siendo central en las estrategias económicas de los cazadores-recolectores-pescadores durante el Holoceno tardío. Se presentan los resultados obtenidos del análisis de restos arqueofaunísticos de esta presa mediano-pequeña, a partir de: análisis cuantitativos, estimación de clases de edad, análisis de huellas, termoalteraciones y fracturas. El objetivo es analizar los patrones de explotación del coipo utilizando información proveniente de los sitios de la localidad La Guillerma (LG1, LG4 y LG5 y San Ramón 7 (SR7 ubicados en el curso inferior del río Salado y del sitio Río Luján (RL y la localidad Cañada Honda (CH localizados en el NE bonaerense. Los resultados permiten sostener que la presión de captura se dio sobre presas adultas, que ingresaron completas a los sitios. Las huellas evidencian la ejecución de una serie de acciones para su aprovechamiento (cuereo, desarticulación y descarne. Abstract Myocastor coypus is one of the most abundant species found in archaeological sites in the Pampean Region wetlands, especially in the Salado and Paraná river basins. On the basis of different lines of evidence, it may be suggested that this animal was an extensively exploited resource, proving to be central in the strategies of hunter-gatherer-fishers that inhabited these regions during the Late Holocene. In this study, data obtained from archaeofaunal analysis are described: quantitative, age-class and butchering evidence analysis (cut marks, burning features and fracture patterns. We aim at analyzing the exploitation patterns of coypu using data found in La Guillerma (LG1, LG4 and LG5 and San Ramón 7 (SR7, pertaining to the lower Río Salado basin, and in Río Luján (RL and Cañada Honda (CH situated in the northeastern province of Buenos Aires. Results show that adult prey capture was practised, where the entire animal bodies had been introduced in the sites. Cut marks also evidence a series of tasks associated to exploitation (skinning, disarticulation and defleshing.

  10. New species of Aspiculuris (Nematoda: Heteroxynematidae, parasite of Mus musculus (Rodentia: Muridae, from Hidalgo, Mexico Una nueva especie de Aspiculuris (Nematoda: Heteroxynematidae, parásito de Mus musculus (Rodentia: Muridae, de Hidalgo, México

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    Jorge Falcón-Ordaz

    2010-12-01

    Full Text Available Aspiculuris huascaensis n. sp. was found in the intestine of Mus musculus collected from 2 localities in Hidalgo, Mexico, and is described herein. The new species possesses cervical alae abruptly interrupted at mid-length of esophageal bulb form an acute angle, distinguishing it from 5 of the 17 species in the genus. The new species is differentiated from 11 of the remaining species by having cervical alae that form an acute angle and end at mid-length of the esophageal bulb. Aspiculuris huascaensis n. sp. most closely resembles A. tetraptera in the position of the terminal end of the cervical alae. However, the new species can be distinguished from that species by the number of caudal papillae (12 vs. 14, the presence of a sessile precloacal papilla between 2 cuticular folds, and by having a single pedunculate papilla located slightly posterior to the cloaca.Se describe una especie nueva, Aspiculuris huascaensis n. sp., proveniente del intestino de Mus musculus de 2 localidades de Hidalgo, México. Esta especie cuenta con 1 ala cervical interrumpida abruptamente formando un ángulo agudo; con base en este carácter, la especie nueva se distingue de 5 de las 17 especies que contiene el género. De 11 especies más, A. huascaensis n. sp. se diferencia por el ángulo agudo que forma el ala cervical y porque ésta finaliza a la mitad de la longitud del bulbo esofágico. Aspiculuris huascaensis n. sp. se asemeja a A. tetraptera por la terminación del ala cervical. Sin embargo, puede distinguirse de dicha especie por el número de papilas caudales (12 vs. 14, por la presencia de una papila precloacal sésil entre 2 pliegues cuticulares y por una papilla sencilla detrás de la cloaca.

  11. The capybara, Hydrochoerus hydrochaeris (Mammalia: Rodentia, found at the archaeological site SC PRV 02, Santa Catarina Island, Brasil

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    Paulo César Simões-Lopes

    2005-11-01

    Full Text Available Santa Catarina Island possesses dozens of archeological sites where the skeletal remains of a great array of animals can be found. The goal of this study was to quantify the skeletal remains of capybaras found at the archeological site SC PRV 02 (1067 to 1735 BP, located in the northern part of the island, along the shores of Lagoa da Conceição, a saltwater lagoon. Thirty-seven skeletal fragments of at least 12 different individuals were identified. The anatomic regions of the capybaras most sought-after by pre-colonial inhabitants were the anterior and posterior limbs. About 40% of the skeletal fragments did not show any epiphyseal fusion with the shaft. Approximately 48% of the fragments found presented evidence of human activity. Our analyses suggest that capybaras played an important role in the diet of these inhabitants and that they were also used for the confection of different functional goods. We diagnosed the manipulation techniques used to obtain these goods, such as percussion and transversal section. The evidence of carbonization and superficial incisions indicates dismembering, preparation, and consumption of capybaras for feeding. Similar techniques were found at other archeological sites of the same age, suggesting that even though pre-colonial inhabitants of the island were considered to be fishermen, capybaras represented a well-appreciated resource.

  12. Caamembecaia gratiosus n. gen., n. sp. (Acari: Trombiculidae), from Trinomys gratiosus (Gunter) (Rodentia: Echimydae), of Atlantic Forest in Southeastern Brazil

    OpenAIRE

    Gilberto S Gazêta; Marinete Amorim; David EP Bossi; Arício X Linhares; Nicolau M Serra-Freire

    2006-01-01

    From June 1999 to May 2001, small mammals were captured in three areas of the Atlantic Forest in Southeastern Brazil and examined for ectoparasites. Analysis of ectoparasites revealed the presence of a new chigger genus and species, Caamembecaia gratiosus, from Trinomys gratiosus. This is the first record of a chigger from T. gratiosus.

  13. Population dynamics of Euryoryzomys russatus and Oligoryzomys nigripes (Rodentia, Cricetidae) in an Atlantic forest area, Santa Catarina Island, Southern Brazil

    OpenAIRE

    Maurício Eduardo Graipel; Luiz Gustavo Rodrigues Oliveira-Santos; Marilena Altenfelder Arruda Campos; Pâmela Castro Antunes

    2009-01-01

    The population dynamics and reproductive issues of two species of rodents of the family Cricetidae, Rice Rats (Euryoryzomys russatus) and Pygmy Rice Rats (Oligoryzomys nigripes), were studied for 24 months in an Atlantic Forest area in southern Brazil. Euryoryzomys russatus presented density-dependent population fluctuation, and recruitment was positively associated with temperature. Oligoryzomys nigripes displayed the lowest abundance, greatest population fluctuation and shortest permanence ...

  14. The visual system in subterranean African mole-rats (Rodentia, Bathyergidae): Retina, subcortical visual nuclei and primary visual cortex

    Czech Academy of Sciences Publication Activity Database

    Němec, P.; Cveková, P.; Benada, Oldřich; Wielkopolska, E.; Olkowitz, S.; Turlejski, K.; Burda, H.; Bennett, N. C.; Peichl, L.

    2008-01-01

    Roč. 75, 2-4 (2008), s. 356-364. ISSN 0361-9230 Grant ostatní: GA AV ČR(CZ) GA206/06/1469; ZA(ZA) 2069070 Institutional research plan: CEZ:AV0Z50200510 Keywords : microphthalmia * ocular regression * subterranean mammals Subject RIV: EE - Microbiology, Virology Impact factor: 2.281, year: 2008

  15. Reproductive biology of the greater bandicoot rat Bandicota indica (Rodentia: Muridae in the rice fields of southern Thailand

    Directory of Open Access Journals (Sweden)

    N. THITIPRAMOTE

    2009-02-01

    Full Text Available This study investigated some aspects of the reproductive biology of male and female greater bandicoot rats Bandicota indica in southern Thailand from September 2004 to September 2006. In females, body, uterine and preputial gland weights, occurrences of pregnancies and placental scars, and in males, testicular weights and histology, and sizes of accessory sex glands, were recorded. Pregnancies occurred predominantly, but not exclusively, in the wet season, with a higher incidence pregnancies in the second, than in the first, dry season. Uterine and preputial gland weights tended to be lower in the first, but not the second dry season, with placental scars occurring at all times of year. Males tended to have heavier testes in the wet season but some seminiferous tubules contained sperm even in the dry season. Seminal vesicles, but not prostates and preputial glands, tended to be heavier in animals in the wet season. We conclude that the greater bandicoot rat in southern Thailand shows maximal reproductive activity in the wet season with some reproductive activity, albeit variable from year to year, occurring in the dry season depending upon environmental conditions. This study has also shown that females, as well as males, have large preputial glands, and that males invariably have small testes regardless of the time of year. These observations suggest a similar timing of reproduction, but a different breeding biology and perhaps social organisation, from that of the sympatric ricefield rat, Rattus argentiventer [Current Zoology 55(1: 48–55, 2009].

  16. A new species of Trichuris Roederer, 1761 (Nematoda: Trichuridae) from Heteromys gaumeri Allen & Chapman (Rodentia: Heteromyidae) in Yucatan, Mexico.

    Science.gov (United States)

    Panti-May, Jesús Alonso; Robles, María Del Rosario

    2016-09-01

    In Mexico, four species of Trichuris Roederer, 1761 have been recorded in wild rodents belonging to the family Heteromyidae. In the present paper, we describe a new species based on specimens collected from Heteromys gaumeri Allen & Chapman (Heteromyidae: Heteromyinae) in the tropical forests of the Yucatan Peninsula, Mexico. Trichuris silviae n. sp. can be differentiated from the congeners described in North and South American rodents by morphological and morphometric features, such as the possession of a wide spicular tube, a thicker proximal cloacal tube, a shorter distal cloacal tube and a cylindrical spicular sheath. This is the first description of a Trichuris spp. from heteromyid rodents in Mexico and the fourth in North America. Despite the broad distribution of Heteromys spp., few cases of Trichuris infection have been reported. Further studies are necessary to verify if the new species is present in other heteromyid rodents in order to increase our knowledge about its geographical and host distribution. PMID:27522370

  17. A geometric morphometric analysis of the shape of the first upper molar in mice of the genus Mus (Muridae, Rodentia)

    Czech Academy of Sciences Publication Activity Database

    Macholán, Miloš

    2006-01-01

    Roč. 270, č. 4 (2006), s. 672-681. ISSN 0952-8369 R&D Projects: GA AV ČR IAA6045307 Institutional research plan: CEZ:AV0Z50450515 Keywords : Mus * geometric morphometrics * thin-plate spline Subject RIV: EB - Genetics ; Molecular Biology Impact factor: 1.413, year: 2006

  18. A New Subspecies of Meriones tristrami Thomas, 1892 (Rodentia: Gerbillinae) From Kilis (Southeastern Turkey): Meriones tristrami kilisensis subsp. N.

    OpenAIRE

    YİĞİT, Nuri; ÇOLAK, Ercüment

    1998-01-01

    In this study, seventeen specimens of Meriones tristrami from Kilis were compared with the specimens of Meriones tristrami bodenheimeri along with topotypes of Meriones tristrami lycaon close to those from Kilis. It was determined that the specimens from Kilis were distinguishable from M.t. lycaon by characters such as dorsal coloration, Tx100 / HB (ratio of tail length to head and body), zygomatic breadth, occipitonasal length, basal length, diastema length, occipital width, weight, bacul...

  19. Genetic Pool Information Reflects Highly Suitable Areas: The Case of Two Parapatric Endangered Species of Tuco-tucos (Rodentia: Ctenomiydae)

    Science.gov (United States)

    Galiano, Daniel; Bernardo-Silva, Jorge; de Freitas, Thales R. O.

    2014-01-01

    Conservation of small mammals requires knowledge of the genetically and ecologically meaningful spatial scales at which species respond to habitat modifications. Conservation strategies can be improved through the use of ecological niche models and genetic data to classify areas of high environmental suitability. In this study, we applied a Maxent model integrated with genetic information (nucleotide diversity, haplotype diversity and Fu's Fs neutrality tests) to evaluate potential genetic pool populations with highly suitable areas for two parapatric endangered species of tuco-tucos (Ctenomys minutus and C. lami). Our results demonstrated that both species were largely influenced by vegetation and soil variables at a landscape scale and inhabit a highly specific niche. Ctenomys minutus was also influenced by the variable altitude; the species was associated with low altitudes (sea level). Our model of genetic data associated with environmental suitability indicate that the genetic pool data were associated with highly suitable areas for C. minutus. This pattern was not evident for C. lami, but this outcome could be a consequence of the restricted range of the species. The preservation of species requires not only detailed knowledge of their natural history and genetic structure but also information on the availability of suitable areas where species can survive, and such knowledge can aid significantly in conservation planning. This finding reinforces the use of these two techniques for planning conservation actions. PMID:24819251

  20. Genetic and morphological variability in South American rodent Oecomys (Sigmodontinae, Rodentia): evidence for a complex of species

    Indian Academy of Sciences (India)

    C. C. Rosa; T. Flores; J. C. Pieczarka; R. V. Rossi; M. I. C. Sampaio; J. D. Rissino; P. J. S. Amaral; C. Y. Nagamachi

    2012-12-01

    The rodent genus Oecomys (Sigmodontinae) comprises ∼16 species that inhabit tropical and subtropical forests in Central America and South America. In this study specimens of Oecomys paricola Thomas, 1904 from Belém and Marajó island, northern Brazil, were investigated using cytogenetic, molecular and morphological analyses. Three karyotypes were found, two from Belém ($2n = 68$, fundamental number (FN) = 72 and $2n = 70$, FN = 76) and a third from Marajó island ($2n = 70$, FN = 72). No molecular or morphological differences were found between the individuals with differing cytotypes from Belém, but differences were evident between the individuals from Belém and Marajó island. Specimens from Belém city region may represent two cryptic species because two different karyotypes are present in the absence of significant differences in morphology and molecular characteristics. The Marajó island and Belém populations may represent distinct species that have been separated for some time, and are in the process of morphological and molecular differentiation as a consequence of reproductive isolation at the geographic and chromosomal levels. Thus, the results suggest that O. paricola may be a complex of species.

  1. Thrichomys laurentius (Rodentia; Echimyidae as a putative reservoir of Leishmania infantum and L. braziliensis: patterns of experimental infection.

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    André Luiz Rodrigues Roque

    Full Text Available The importance of the genus Thrichomys in the retention of infection and transmission of Leishmania species is supported by previous studies that describe an ancient interaction between caviomorphs and trypanosomatids and report the natural infection of Thrichomys spp. Moreover, these rodents are widely dispersed in Brazil and recognized as important hosts of other tripanosomatids. Our main purpose was to evaluate the putative role of Thrichomys laurentius in the retention of infection and amplification of the transmission cycle of Leishmania infantum and L. braziliensis. Male and female T. laurentius (n = 24 born in captivity were evaluated for the retention of infection with these Leishmania species and followed up by parasitological, serological, hematological, biochemical, histological, and molecular assays for 3, 6, 9, or 12 months post infection (mpi. T. laurentius showed its competence as maintenance host for the two inoculated Leishmania species. Four aspects should be highlighted: (i re-isolation of parasites 12 mpi; (ii the low parasitic burden displayed by T. laurentius tissues; (iii the early onset and maintenance of humoral response, and (iv the similar pattern of infection by the two Leishmania species. Both Leishmania species demonstrated the ability to invade and maintain itself in viscera and skin of T. laurentius, and no rodent displayed any lesion, histological changes, or clinical evidence of infection. We also wish to point out the irrelevance of the adjective dermotropic or viscerotropic to qualify L. braziliensis and L. infantum, respectively, when these species are hosted by nonhuman hosts. Our data suggest that T. laurentius may act at least as a maintenance host of both tested Leishmania species since it maintained long-lasting infections. Moreover, it cannot be discarded that Leishmania spp. infection in free-ranging T. laurentius could result in higher parasite burden due the more stressing conditions in the wild. Therefore the tissular parasitism of the skin, infectiveness to the vector, and amplification of the transmission cycle of both Leishmania species could be expected.

  2. [The new focus of cutaneous leishmaniasis of M'sila (Algeria). Natural infection cf Psammomys obesus (Rodentia, Gerbillidae)].

    Science.gov (United States)

    Belazzoug, S

    1983-01-01

    The M'sila region has been recently the theatre of an important outbreak of cutaneous leishmaniasis. The search for the animal reservoir resulted in the discovery of 3 rodents, Psammomys obesus, naturally infected with Leishmania. This is of importance as far as prophylactic measures are concerned. PMID:6347415

  3. Pseudoescorpiones (Arachnida: Pseudoscorpionida) asociados a nidos de ratas del género Neotoma (Mammalia: Rodentia) del Altiplano Mexicano

    OpenAIRE

    G. A. Villegas Guzmán; T. M. Pérez

    2005-01-01

    Se registran 153 ejemplares de once especies de pseudoescorpiones encontradas en 32 nidos de cinco especies del género Neotoma del Altiplano Mexicano. En los nidos de N. albigula se encontró a Tychochernesinflatus, Lustrochernes grossus, Serianus dolosus y Juxtachelifer fructuosus; en los de N. goldmani a T. inflatus;en los de N. micropus a Pachychernes sp. y Chelifer cancroides; en los de N. mexicana a Paraliochthonius sp.,Larca chamberlini, S. dolosus, Illinichernes distinctus y T. inflatus...

  4. Origin and developmental fate of vestigial tooth primordia in the upper diastema of the field vole (Microtus agrestis, Rodentia)

    Czech Academy of Sciences Publication Activity Database

    Witter, K.; Lesot, H.; Peterka, Miroslav; Vonesch, J. L.; Míšek, Ivan; Peterková, Renata

    2005-01-01

    Roč. 50, - (2005), s. 401-409. ISSN 0003-9969 R&D Projects: GA MŠk OC B23.001; GA ČR GA304/02/0448 Institutional research plan: CEZ:AV0Z50390512 Keywords : tooth development * odontogenesis * embryo Subject RIV: EB - Genetics ; Molecular Biology Impact factor: 1.288, year: 2005

  5. A new host of Trypanosoma cruzi from Jujuy, Argentina: octodontomys gliroides (Gervais & D'Orbigny, 1844 (Rodentia, Octodontidae

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    Nicolas J. Schweigmann

    1992-06-01

    Full Text Available To identify wild hosts of Trypanosoma cruzi, surveys were conducted in the subandean valleys of Jujuy Province, Argentina, between June 1986 and March 1987. Seventy two mammals from 13 different species were examined by xenodiagnosis. Fifty two of them were mostly roedents trapped at the localities of Maimará, León and Tilcara, and the remainder had been kept in captivity at the Estación Biológica Experimental, in Jujuy. Trypanosoma cruzi infection was detected only in 2 Octodontomys gliroides (2 pos./8 exam. 25% from all 72 examined mammals. Isolates were called Octodontomys Argentina 1 and 2 (OA1 and OA2. Both infected animals were caught at the archaelogical ruin of Pucará, at Tilcara. Repeated searches for triatomines in the ruin itself and in neighbour houses rendered negative results. Groups of mice inoculated with either OA1 or OA2 isolates became infected between 7 (OA1 to 12 days (OA2 postinoculation PI. Parasitemia peaks were observed between day 12th - 14th PI. Scarce amastigote nests were found in myocardium and skeletal muscle. Mortality was observed only for mice inoculated with OA1. Isoenzyme patterns of OA1 and OA2 were identical to one found in dogs and slightly different from that of human parasites in Argentina. Bones from Octodontomys sp., were recently found in a cave, dated 10200-8600 BC, in Pumamarca, near Tilcara, Jujuy. There are evidences that O. gliroides cohabited with man in ancient times and was associated to the domestic cycle of T. cruzi transmission, playing a role like that of domestic cavies. in Bolivia.

  6. Molerats (Bathyergidae, Rodentia in South African National Parks: notes on the Taxonomic "isolation" and Hystricomorph Affinities of the family

    Directory of Open Access Journals (Sweden)

    G de Graaff

    1979-01-01

    Full Text Available The history of classification ofAfrotropical molerats is reviewed and an assessment is made of the supposed taxonomic "isolation" of the molerats (bathyergids by considering morphological features in the skull, post-cranial skeleton, reproductive organs and myology which collectively point to hystricomorph affinities in contrast to a myomorph relationship which is often postulated.

  7. Revision of the Wind River faunas, early Eocene of central Wyoming. IX - The oldest known hystricomorphous rodent (Mammalia: Rodentia)

    Science.gov (United States)

    Dawson, Mary R.; Krishtalka, Leonard; Stucky, Richard K.

    1990-01-01

    The rostral portion of the skull of a new genus and species of rodent, Armintomys tullbergi, from the earliest middle Eocene of the Wind River Basin (Wyoming) provides the geologically oldest known record of the hystricomorphous zygomasseteric structure. Armintomys also preserves the oldest known occurrence of incisor enamel that is transitional from pauciserial to uniserial. Other dental characters include: anteriorly grooved incisor, small premolars, and relatively primitive sciuravidlike molars. Analysis of this unique combination of characters implies that Armintomys is the oldest known myomorph rodent and the only known representative of a new family. Armintomyidae, which is referred, with question, to the myomorph superfamily Dipodoidea. Armintomys is more primitive, especially in premolar retention and structure, than the Bridgerian zapodid Elymys from Nevada, but adds to evidence from the latter for an early origin and radiation of dipodoid rodents.

  8. On cognitive ecology and the environmental factors that promote Alzheimer disease: lessons from Octodon degus (Rodentia: Octodontidae).

    Science.gov (United States)

    Rivera, Daniela S; Inestrosa, Nibaldo C; Bozinovic, Francisco

    2016-01-01

    Cognitive ecologist posits that the more efficiently an animal uses information from the biotic and abiotic environment, the more adaptive are its cognitive abilities. Nevertheless, this approach does not test for natural neurodegenerative processes under field or experimental conditions, which may recover animals information processing and decision making and may explain, mechanistically, maladaptive behaviors. Here, we call for integrative approaches to explain the relationship between ultimate and proximate mechanisms behind social behavior. We highlight the importance of using the endemic caviomorph rodent Octodon degus as a valuable natural model for mechanistic studies of social behavior and to explain how physical environments can shape social experiences that might influence impaired cognitive abilities and the onset and progression of neurodegenerative disorders such as Alzheimer disease. We consequently suggest neuroecological approaches to examine how key elements of the environment may affect neural and cognitive mechanisms associated with learning, memory processes and brain structures involved in social behavior. We propose the following three core objectives of a program comprising interdisciplinary research in O. degus, namely: (1) to determine whether diet types provided after weaning can lead to cognitive impairment associated with spatial memory, learning and predisposing to develop Alzheimer disease in younger ages; (2) to examine if early life social experience has long term effects on behavior and cognitive responses and risk for development Alzheimer disease in later life and (3) To determine if an increase of social interactions in adult degu reared in different degree of social stressful conditions alter their behavior and cognitive responses. PMID:26897365

  9. Convergent evolution of aquatic foraging in a new genus and species (Rodentia: Muridae) from Sulawesi Island, Indonesia.

    Science.gov (United States)

    Rowe, Kevin C; Achmadi, Anang S; Esselstyn, Jacob A

    2014-01-01

    The island of Sulawesi, in Indonesia, lies at the crossroads of the Indo-Australian Archipelago and has remained isolated from the Asian (Sunda) and Australian (Sahul) continental shelves for at least the last 10 million years. Of the 50 native species of rodents on Sulawesi, all are endemic and represent the evolution of a variety of ecological and morphological forms within the Muridae and Sciuridae. Carnivorous rodents have evolved, perhaps independently, in Muridae from the Philippines, Sulawesi, and Sahul, but semi-aquatic murids are only known from Sahul. Here we describe a new genus and species of insectivorous water rat from Sulawesi. Phylogenetic analyses demonstrate that it is related to the shrew rats of Sulawesi and represents an origin of aquatic carnivory that is independent from the evolution of water rats on Sahul. Many areas of Sulawesi have not been surveyed systematically and current lists of mammal species are likely to dramatically underestimate actual diversity. PMID:24943633

  10. C-heterochromatin variation and NOR distribution in the Karyotype of water vole, Arvicola terrestris (Mammalia, Rodentia)

    Czech Academy of Sciences Publication Activity Database

    Arslan, A.; Yorulmaz, T.; Toyran, K.; Gözütok, S.; Zima, Jan

    2011-01-01

    Roč. 64, č. 2 (2011), s. 215-222. ISSN 0008-7114 R&D Projects: GA MŠk LC06073 Institutional research plan: CEZ:AV0Z60930519 Keywords : Central Europe * chromosome banding * karyotype differentiation * Turkey Subject RIV: EG - Zoology Impact factor: 0.533, year: 2011

  11. C-banding and Ag-NOR distribution patterns in Euphrates jerboa, Allactaga euphratica (Mammalia: Rodentia), from Turkey

    Czech Academy of Sciences Publication Activity Database

    Arslan, A.; Yorulmaz, T.; Toyran, K.; Albayrak, I.; Zima, Jan

    2012-01-01

    Roč. 76, č. 4 (2012), s. 435-439. ISSN 0025-1461 Institutional support: RVO:68081766 Keywords : AgNOR staining * C-banding * cytogenetics * jerboas Subject RIV: EG - Zoology Impact factor: 0.809, year: 2012

  12. Demodex castoris sp. nov. (Acari: Demodecidae) parasitizing Castor fiber (Rodentia), and other parasitic arthropods associated with Castor spp.

    Science.gov (United States)

    Izdebska, Joanna N; Fryderyk, Sławomira; Rolbiecki, Leszek

    2016-02-11

    A new species of demodecid mite, Demodex castoris sp. nov. (Acari: Prostigmata: Demodecidae), is described based on adult stages from the skin of the nasal region of the Eurasian beaver Castor fiber Linnaeus, 1758, collected in Poland. This is the first detection of a representative demodecid mite in rodents of the suborder Castorimorpha and also represents the first detection of a skin mite in Eurasian beavers. The new species is a small skin mite (average 173 µm in length) characterized by sexual dimorphism related to body proportions. D. castoris sp. nov. was observed in 4 out of 6 beavers examined (66.6%), with a mean intensity of 10.8 and an intensity range of 2-23 ind. host(-1). This paper also contains a checklist of parasitic arthropods known from Castor spp. PMID:26865230

  13. New data on occurrence of Demodex flagellurus (Acari, Demodecidae) - rarely recorded parasite from the house mouse Mus musculus (Rodentia, Muridae).

    Science.gov (United States)

    Izdebska, Joanna N; Rolbiecki, Leszek

    2015-01-01

    Demodex flagellurus Bukva, 1985 is one of two known demodecid mites of the house mouse Mus musculus Linnaeus, 1758, in which it is observed in genital area. Skin fragments of 30 house mice from various regions of Poland (residential buildings in Gdynia and Gdańsk, rural region in Wielkopolska-Kujawska Lowland) were examined. The mites were noted in 25.0% of the mice, with mean intensity of 48.0 and intensity range of 2-103. D. flagellurus demonstrated the differentiated occurrence in host populations. PMID:25911036

  14. Behavior and foraging technique of the Ingram's squirrel Guerlinguetus ingrami (Sciuridae: Rodentia) in an Araucaria moist forest fragment

    OpenAIRE

    Calebe Pereira Mendes; José Flávio Cândido-Jr

    2014-01-01

    This work describes the foraging techniques, body positions and behavior of free-ranging Ingram's squirrel Guerlinguetus ingrami Thomas, 1901 in a region of the Araucaria moist forest, in the Atlantic Forest of southern Brazil. The animals were observed using the "all occurrence sampling" method with the aid of binoculars and a digital camcorder. All behaviors were described in diagrams and an ethogram. We recorded five basic body positions, 24 behaviors, two food choices, and three feeding s...

  15. Behavior and foraging technique of the Ingram's squirrel Guerlinguetus ingrami (Sciuridae: Rodentia in an Araucaria moist forest fragment

    Directory of Open Access Journals (Sweden)

    Calebe Pereira Mendes

    2014-06-01

    Full Text Available This work describes the foraging techniques, body positions and behavior of free-ranging Ingram's squirrel Guerlinguetus ingrami Thomas, 1901 in a region of the Araucaria moist forest, in the Atlantic Forest of southern Brazil. The animals were observed using the "all occurrence sampling" method with the aid of binoculars and a digital camcorder. All behaviors were described in diagrams and an ethogram. We recorded five basic body positions, 24 behaviors, two food choices, and three feeding strategies utilized to open fruits of Syagrus romanzoffiana (Cham., the main food source of Ingram's squirrels. We also observed a variance in the animals' stance, which is possibly influenced by predation risk, and discuss the causes of some behaviors.

  16. SDS-PAGE Patterns of Blood Serum Proteins in some Species of the Genus Meriones (Mammalia: Rodentia)

    OpenAIRE

    ÇOLAK, Reyhan; Nuri YİĞİT; ÇOLAK, Ercüment

    2002-01-01

    The blood serum proteins of Meriones meridianus, Meriones crassus, Meriones persicus and Meriones tristrami, all found in Turkey, along with domestic Meriones unguiculatus, which originated in Mongolia, were examined for the first time by SDS-PAGE. In the globulin zone, seven to ten bands were identified, one band in the post-albumin and albumin zones and one or two bands in the pre-albumin zone of five species of the genus Meriones. There was no diagnostic difference in the pattern of serum ...

  17. Phylogenetic relationships in the Niviventer-Chiromyscus complex (Rodentia, Muridae) inferred from molecular data, with description of a new species.

    Science.gov (United States)

    Balakirev, Alexander E; Abramov, Alexei V; Rozhnov, Viatcheslav V

    2014-01-01

    Based on molecular data for mitochondrial (Cyt b, COI) and nuclear (IRBP, GHR) genes, and morphological examinations of museum specimens, we examined diversity, species boundaries, and relationships within and between the murine genera Chiromyscus and Niviventer. Phylogenetic patterns recovered demonstrate that Niviventer sensu lato is not monophyletic but instead includes Chiromyscuschiropus, the only previously recognized species of Chiropus. To maintain the genera Niviventer and Chiropus as monophyletic lineages, the scope and definition of the genus Chiromyscus is revised to include at least three distinct species: Chiromyscuschiropus (the type species of Chiromyscus), Chiromyscuslangbianis (previously regarded as a species of Niviventer), and a new species, described in this paper under the name Chiromyscusthomasi sp. n. PMID:25493050

  18. Phylogenetic relationships in the Niviventer-Chiromyscus complex (Rodentia, Muridae inferred from molecular data, with description of a new species

    Directory of Open Access Journals (Sweden)

    Alexander Balakirev

    2014-11-01

    Full Text Available Based on molecular data for mitochondrial (Cyt b, COI and nuclear (IRBP, GHR genes, and morphological examinations of museum specimens, we examined diversity, species boundaries, and relationships within and between the murine genera Chiromyscus and Niviventer. Phylogenetic patterns recovered demonstrate that Niviventer sensu lato is not monophyletic but instead includes Chiromyscus chiropus, the only previously recognized species of Chiropus. To maintain the genera Niviventer and Chiropus as monophyletic lineages, the scope and definition of the genus Chiromyscus is revised to include at least three distinct species: Chiromyscus chiropus (the type species of Chiromyscus, C. langbianis (previously regarded as a species of Niviventer, and a new species, described in this paper under the name C. thomasi sp. n.

  19. Phylogenetic relationships in the Niviventer-Chiromyscus complex (Rodentia, Muridae) inferred from molecular data, with description of a new species

    OpenAIRE

    Alexander Balakirev; Alexei Abramov; Viatcheslav Rozhnov

    2014-01-01

    Abstract Based on molecular data for mitochondrial (Cyt b, COI) and nuclear (IRBP, GHR) genes, and morphological examinations of museum specimens, we examined diversity, species boundaries, and relationships within and between the murine genera Chiromyscus and Niviventer . Phylogenetic patterns recovered demonstrate that Niviventer sensu lato is not monophyletic but instead includes Chiromyscus chiropus , the only previously recognized species of Chiropus . To maintain the genera Niviventer a...

  20. The role of vibrissal sensing in forelimb position control during travelling locomotion in the rat (Rattus norvegicus, Rodentia).

    Science.gov (United States)

    Niederschuh, Sandra J; Witte, Hartmut; Schmidt, Manuela

    2015-02-01

    In the stem lineage of therians, a comprehensive reorganization of limb and body mechanics took place to provide dynamic stability for rapid locomotion in a highly structured environment. At what was probably the same time, mammals developed an active sense of touch in the form of movable mystacial vibrissae. The rhythmic movements of the limbs and vibrissae are controlled by central pattern-generating networks which might interact with each other in sensorimotor control. To test this possible interaction, we studied covariation between the two by investigating speed-dependent adjustments in temporal and spatial parameters of forelimb and vibrissal kinematics in the rat. Furthermore, the possible role of carpal vibrissae in connecting the two oscillating systems was explored. We compared locomotion on continuous and discontinuous substrates in the presence and absence of the mystacial or/and carpal vibrissae across a speed range of 0.2-0.5m/s and found that a close coupling of the kinematics of the two oscillating systems appears to be precluded by their differential dependence on the animal's speed. Speed-related changes in forelimb kinematics mainly occur in temporal parameters, whereas vibrissae change their spatial excursion. However, whisking frequency is always high enough that at least one whisk cycle falls into the swing phase of the limb, which is the maximum critical period for sensing the substrate on which the forepaw will be placed. The influence of tactile cues on forelimb positional control is more subtle than expected. Tactile cues appear to affect the degree of parameter variation but not average parameters or the failure rate of limbs during walking on a perforated treadmill. The carpal vibrissae appear to play a role in sensing the animal's speed by measuring the duration of the stance phase. The absence of this cue significantly reduces speed-related variation in stride frequency and vibrissal protraction. PMID:25547567

  1. Three dimensional geometric morphometric study of the Ethiopian Myomys - Stenocephalemys complex (Murinae, Rodentia

    Directory of Open Access Journals (Sweden)

    Carlo Fadda

    2000-06-01

    Full Text Available Abstract Geometric morphometrics was used to investigate the Ethiopian Myomys - Stenocephalemys complex, and to suggest possible explanations for differences in size and shape. The four species of the complex (M. albipes, M. ruppi, S. griseicauda, S. albocaudata and a Kenyan species, M. fumatus, were studied using Procrustes analysis of three dimensional landmarks collected over the skull. All these species occur in very different habitats, from forests at 1000 m up to the Afro Alpine moorlands above 4000 m. There is a substantial contradiction between phylogenetic relationships based on chromosomal rearrangements and allozymes (two distinct lineages corresponding to the two genera, and mtDNA (Stenocephalemys being paraphyletic. Geometric morphometrics supports the former hypothesis. Partial Least-Squares analysis shows a significant relation between variation in size and shape and altitude, which strongly suggests that adaptation is a major causal factor for divergence in the morphology of the skull. Size increases with altitude, paralleling a clinal change in shape, which involves stenocephaly as characterising the highland species. This shape modification allows the rodents to scan the sky efficiently for birds, which represent the main category of predators in the Afro Alpine moorlands.

  2. Syphacia (Syphacia) maxomyos sp. n. (Nematoda: Oxyuridae) from Maxomys spp. (Rodentia: Muridae) from Sulawesi and Sumatra, Indonesia.

    Science.gov (United States)

    Dewi, Kartika; Hasegawa, Hideo; Fitriana, Yuli Sulistya; Asakawa, Mitsuhiko

    2015-10-01

    The present report describes Syphacia (Syphacia) maxomyos sp. n. (Nematoda: Oxyuridae) from two species of spiny rats, Maxomys musschenbroekii from Sulawesi and M. whiteheadi from Sumatra. It is characterized by a cephalic plate extending laterally with dorsoventral constriction and stumpy eggs with an operculum rim reaching pole. It is readily distinguishable by the former feature from all of hitherto known representatives of this genus in Indonesia, but it resembles parasites in Murini and Hydromyni rodents in continental Asia and Sahul. This is the first Syphacia species distributed in both the Sunda Shelf and Sulawesi with the exception of Syphacia muris, a cosmopolitan pinworm found in rodents of the of genus Rattus. It is surmised that S. maxomyos is specific to Maxomys and that it was introduced to Sulawesi by dispersal of some Maxomys from the Sunda Shelf. PMID:26062434

  3. Diversity of tuco-tucos (Ctenomys, Rodentia) in the Northeastern wetlands from Argentina: mitochondrial phylogeny and chromosomal evolution.

    Science.gov (United States)

    Caraballo, Diego A; Abruzzese, Giselle A; Rossi, María Susana

    2012-06-01

    Tuco-tucos (small subterranean rodents of the genus Ctenomys) that inhabit sandy soils of the area under the influence of the second largest wetland of South America, in Northeastern Argentina (Corrientes province), are a complex of species and forms whose taxonomic status were not defined, nor are the evolutionary relationships among them. The tuco-tuco populations of this area exhibit one of the most ample grades of chromosomal variability within the genus. In order to analyze evolutionary relationships within the Corrientes group and its chromosomal variability, we completed the missing karyotypic information and performed a phylogenetic analysis. We obtained partial sequences of three mitochondrial markers: D-loop, cytochrome b and cytochrome oxidase I. The Corrientes group was monophyletic and split into three main clades that grouped related karyomorphs. The phylogeny suggested an ancestral condition of the karyomorph with diploid number (2n) 70 and fundamental number (FN) 84 that has evolved mainly via reductions of the FN although amplifications occurred in certain lineages. We discuss the relationship between patterns of chromosomal variability and species and groups boundaries. From the three main clades the one named iberá exhibited a remarkable karyotypic homogeneity, and could be considered as an independent and cohesive evolutionary lineage. On the contrary, the former recognized species C. dorbignyi is a polyphyletic lineage and hence its systematic classification should be reviewed. PMID:22810419

  4. El aparato masticador del género extinto Actenomys Burmeister, 1888 (Rodentia, Ctenomyidae: inferencias sobre su modo de vida

    Directory of Open Access Journals (Sweden)

    Moreira, G. J.

    2000-04-01

    Full Text Available The genus Actenomys is registered from Plioceno sediments of Buenos Aires province, Argentina. Anatomy of skull and dentition of the genus is described, giving special emphasis to the origin and insertion points of the masticatory musculature. Actenomys is compared with the extant fossorial rodent of the genus Ctenomys, and the development of the masticatory muscles and their degree of functionality are inferred. It is concluded that Actenomys presents a less robust skull, with a masticatory musculature in agreement and incisives with great procumbency. This evidence could explain a possible adaptation of Actenomys to dig using the incisives and an adaptation to live in habitats of higher humidity than the extant forms.Se describe la anatomía cráneo-dentaria del género Actenomys, registrado en sedimentos del Plioceno de la provincia de Buenos Aires (República Argentina, con especial énfasis los puntos de origen e inserción de la musculatura masticatoria; se lo compara con el roedor fosorial viviente del género Ctenomys, infiriéndose el desarrollo de los músculos masticatorios y su grado de funcionalidad. Se concluye que Actenomys presenta un cráneo menos robusto, con una musculatura masticatoria acorde e incisivos procumbentes, lo que podría explicar una posible adaptación para cavar con los mismos, y que estaría adaptado a vivir en ambientes con un porcentaje de humedad mayor que las formas actuales.

  5. On the Origin and Evolution of the Extant System of B Chromosomes in Oryzomyini Radiation (Rodentia, Sigmodontinae).

    Science.gov (United States)

    Ventura, Karen; O'Brien, Patricia Caroline Mary; do Nascimento Moreira, Camila; Yonenaga-Yassuda, Yatiyo; Ferguson-Smith, Malcolm Andrew

    2015-01-01

    Heterogeneous supernumerary chromosomes (Bs) are recognized in the oryzomyines Holochilus brasiliensis, Nectomys rattus, N. squamipes, Oligoryzomys flavescens and Sooretamys angouya, representing about 10% of all known B-containing rodent species. They provide an outstanding model for understanding the origin, evolution and diversity of Bs in a phylogenetic context. Therefore, whole chromosome-specific probes were generated from flow-sorted Holochilus brasiliensis (HBR) autosomes 11 and 25+26 and chromosomes X, Y and Bs. Hybridizations were performed on male metaphases of 15 Oryzomyini species of which 3 are B-containing species. The results reveal that among the species sampled, 12 of them, belonging to a monophyletic Oryzomiyini subclade, are positive for an anonymous Oryzomyini shared heterochromatic region (OSHR) on both sex chromosomes. The OSHR is also present on Bs of Holochilus brasiliensis, Nectomys rattus and N. squamipes but not on Bs of O. flavescens and S. angouya. Two distinct additional OSHR/autosome associations are observed on S. angouya. The three species that are OSHR negative belong to an outgroup. Molecular dating suggests that the OSHR originated between 7.8 and 3 Mya on ancestral sex chromosomes. A tentative explanation for the OSHR-positive nature of B regions in three species could be that transposable elements (TEs) from this specific sex chromosome region may have invaded existing B chromosomes. The presence of the OSHR on entire Xp and Yp adjacent to interstitial telomeric sequences at pericentromeric positions, as observed in Drymoreomys albimaculatus, show a similar organization as on B chromosomes in Nectomys squamipes. The diversity of the Oryzomyini Bs in number, size, morphology and genetic content may be explained by the independent origin of B chromosomes in different subgroups of species, with Bs in Holochilus brasiliensis, Nectomys squamipes and N. rattus sharing the OSHR with sex chromosomes, and those in Oligoryzomys flavescens and Sooretamys angouya lacking OSHR in Bs. The species-specific pattern of Bs is probably a consequence of their independent evolutionary origin. PMID:26305702

  6. Comparative chromosome painting in six species of Oligoryzomys (Rodentia, Sigmodontinae) and the karyotype evolution of the genus.

    Science.gov (United States)

    Di-Nizo, Camilla Bruno; Ventura, Karen; Ferguson-Smith, Malcolm Andrew; O'Brien, Patricia Caroline Mary; Yonenaga-Yassuda, Yatiyo; Silva, Maria José de J

    2015-01-01

    Oligoryzomys belongs to the tribe Oryzomyini, and contains about 22 species. Diploid numbers range from 2n = 44 in Oligoryzomys sp. 2 to 2n = 72 in O. utiaritensis and phylogenetic relationships are not well defined. The high morphological convergence leads to misidentification of taxonomic entities and the species are often identified by chromosomal characters. Until now, the genus has been studied only by classical cytogenetic approaches. To understand the chromosomal evolution of Oligoryzomys, we developed chromosome probes from a female of Oligoryzomys moojeni (OMO) with 2n = 70 and hybridized to other five Oligoryzomys species. The probes painted 31 segments on O. fornesi (OFO) with 2n = 62; 32 segments on O. microtis (OMI), 2n = 64; 33 segments on O. nigripes (ONI), 2n = 62 and on O. rupestris (ORU), 2n = 46; and 34 on Oligoryzomys sp. 2 (OSP), 2n = 44. OMO probes 4 and 5 showed a syntenic association in O. fornesi, O. microtis and O. nigripes and were also presented in the same pair, although disrupted, in O. rupestris and Oligoryzomys sp. 2. Concerning O. rupestris and Oligoryzomys sp. 2, species with the lowest diploid numbers of the genus, a total of 8 probes hybridized to 11 segments on the largest pair of ORU 1 and 9 probes hybridized to 12 segments on OSP 1. Also, OMO 6 painted three segments in ORU, corresponding to the proximal segment of ORU 2q, and the whole of ORU 19 and 20. In OSP, the segment corresponding to ORU 20 was homologous to OSP 1p. OMO X showed signals of hybridization in both X and Y chromosomes. Extensive chromosomal rearrangements, that could not be detected by classical cytogenetic techniques, such as pericentric inversions or repositioning of centromeres, Robertsonian rearrangements and tandem fusions/fissions, as well as gain/activation or loss/inactivation of centromeres and telomeric sequences have driven the huge genome reshuffling in these closely related species. PMID:25658766

  7. Reproductive biology of the greater bandicoot rat Bandicota indica (Rodentia: Muridae) in the rice fields of southern Thailand

    Institute of Scientific and Technical Information of China (English)

    N.THITIPRAMOTE; J.SUWANJARAT; W.G.BREED

    2009-01-01

    This study investigated some aspects of the reproductive biology of male and female greater bandicoot rats,Bandicota indica,in southern Thailand from September 2004 to September 2006. In females,body,uterine and preputial gland weights,occurrences of pregnancies and placental scars,and in males,testicalar weights and histology,and sizes of accessory sex glands,were recorded. Pregnancies occurred predominantly,but not exclusively,in the wet season,with a higher incidence pregnancies in the second,than in the first,dry season. Uterine and preputial gland weights tended to be lower in the first,but not the second dry season,with placental scars occurring at all times of year. Males tended to have heavier testes in the wet season but some seminiferous tubules contained sperm even in the dry season. Seminal vesicles,but not prostates and preputial glands,tended to be heavier in animals in the wet season. We conclude that the greater bandieoot rat in southern Thailand shows maximal reproductive activity in the wet season with some reproductive activity,albeit variable from year to year,occurring in the dry season depending upon environmental conditions. This study has also shown that females,as well as males,have large preputial glands,and that males invariably have small testes regardless of the time of year. These observations suggest a similar timing of reproduction,but a different breeding biology and perhaps social organisation,from that of the sympatric ricefield rat,Rattus argentiventer.

  8. The helminth parasites of two sympatric species of the genus Apodemus (Rodentia: Muridae) from south-eastern Slovakia

    Czech Academy of Sciences Publication Activity Database

    Ondríková, J.; Miklisová, D.; Ribas, Alexis; Stanko, M.

    Brno : Ústav biologie obratlovců AV ČR, 2010 - (Bryja, J.; Zasadil, P.). s. 163 ISBN 978-80-87189-07-8. [Zoologické dny. 11.02.2010-12.02.2010, Praha] Institutional research plan: CEZ:AV0Z60930519 Keywords : helminth s * rodents * Slovakia Subject RIV: EG - Zoology http://zoo.ivb.cz/doc/sborniky/sbornik_2010.pdf

  9. Paraspidodera uncinata (Nematoda, Lauroiinae as parasite of Cavia magna and Cavia aperea (Rodentia, Caviidae in southern Brazil

    Directory of Open Access Journals (Sweden)

    Ana Gabriela da Silva Rocha

    2015-05-01

    Full Text Available Out of the 5 species of Guinea pig registered for Brazil, 4 (Cavia fulgida, C. porcellus, C. aperea, and C. magna have already been reported as hosts of Paraspidodera uncinata. The rodent species C. magna and C. aperea are small-sized mammals, with terrestrial habits, which occur from southern Brazil to eastern Uruguay. Guinea pig specimens donated for research were necropsied for the analysis of endoparasites, and the nematodes found were identified as P. uncinata. The microhabitats of this species were the small and large intestines in C. magna and the large intestine in C. aperea. The prevalence of P. uncinata in the hosts was 60% in C. magna (n = 5 and 14% in C. aperea (n = 7. The record of P. uncinata in different Guinea pig species allows inferring that the foraging mode is similar in the different locations where they occur in southern Brazil, because, perhaps, the infection of hosts has occurred through the ingestion of vegetables contaminated with P. uncinata eggs. This study contributes to knowledge on the helminth fauna of C. magna and C. aperea in southern Brazil.

  10. Distribution and habitat of the Laotian Rock Rat Laonastesaenigmamus Jenkins, Kilpatrick, Robinson & Timmins, 2005 (Rodentia: Diatomyidae) in Vietnam.

    Science.gov (United States)

    Nguyen, Dang Xuan; Nguyen, Nghia Xuan; Nguyen, Duy Dinh; Dinh, Tri Huy; Le, Dinh Thuc; Dinh, Duong Hai

    2014-01-01

    The Laotian Rock Rat Laonastesaenigmamus Jenkins, Kilpatrick, Robinson & Timmins, 2005 was originally discovered in Lao People's Democratic Republic in 2005. This species has been recognized as the sole surviving member of the otherwise extinct rodent family Diatomyidae. Laonastesaenigmamus was initially reported only in limestone forests of Khammouane Province, Central Lao. A second population was recently discovered in Phong Nha Ke Bang National Park (PNKB NP), Quang Binh Province, Central Vietnam in 2011. The confirmed distribution range of L.aenigmamus in Vietnam is very small, approximately 150 km(2), covering low karst mountains in five communes of Minh Hoa District, Quang Binh Province, at elevations between 250 and 400 m asl. The Laotian Rock Rat inhabits the lower part of steep karst towers with many rock boulders and crevices under tall limestone evergreen forest. They use small rock crevices for their dens. The natural habitat of this species in PNKB NP has been affected by selected timber harvesting, however, a complex 3-4 layer forest structure is retained. The Laotian Rock Rat is omnivorous, feeding on parts (leaves, buds, fruits and roots) of 18 plant species and also some insects (cicada, mantis, grasshopper). The population of this species in PNKB NP is seriously threatened with extinction due to its very restricted distribution, high hunting pressure, and habitat disturbance. Laonastesaenigmamus is listed in the IUCN Red List as endangered and in the Wildlife and Aquatic Red List of Lao, however, this species has not been listed in the Red Data Book or any conservation legislative documents of Vietnam. PMID:25589873

  11. Distribution and habitat of the Laotian Rock Rat Laonastes aenigmamus Jenkins, Kilpatrick, Robinson & Timmins, 2005 (Rodentia: Diatomyidae) in Vietnam

    OpenAIRE

    Nguyen, Dang; Nguyen, Nghia; Nguyen, Duy; Dinh,Tri; Le,Dinh; Duong,Dinh

    2014-01-01

    The Laotian Rock Rat Laonastes aenigmamus Jenkins, Kilpatrick, Robinson & Timmins, 2005 was originally discovered in Lao People's Democratic Republic in 2005. This species has been recognized as the sole surviving member of the otherwise extinct rodent family Diatomyidae. Laonastes aenigmamus was initially reported only in limestone forests of Khammouane Province, Central Lao. A second population was recently discovered in Phong Nha Ke Bang National Park (PNKB NP), Quang Binh Province, Centra...

  12. Distribution and habitat of the Laotian Rock Rat Laonastes aenigmamus Jenkins, Kilpatrick, Robinson & Timmins, 2005 (Rodentia: Diatomyidae in Vietnam

    Directory of Open Access Journals (Sweden)

    Dang Nguyen

    2014-12-01

    Full Text Available The Laotian Rock Rat Laonastes aenigmamus Jenkins, Kilpatrick, Robinson & Timmins, 2005 was originally discovered in Lao People's Democratic Republic in 2005. This species has been recognized as the sole surviving member of the otherwise extinct rodent family Diatomyidae. Laonastes aenigmamus was initially reported only in limestone forests of Khammouane Province, Central Lao. A second population was recently discovered in Phong Nha Ke Bang National Park (PNKB NP, Quang Binh Province, Central Vietnam in 2011. The confirmed distribution range of L. aenigmamus in Vietnam is very small, approximately 150 km2, covering low karst mountains in five communes of Minh Hoa District, Quang Binh Province, at elevations between 250 and 400 m asl. The Laotian Rock Rat inhabits the lower part of steep karst towers with many rock boulders and crevices under tall limestone evergreen forest. They use small rock crevices for their dens. The natural habitat of this species in PNKB NP has been affected by selected timber harvesting, however, a complex 3-4 layer forest structure is retained. The Laotian Rock Rat is omnivorous, feeding on parts (leaves, buds, fruits and roots of 18 plant species and also some insects (cicada, mantis, grasshopper. The population of this species in PNKB NP is seriously threatened with extinction due to its very restricted distribution, high hunting pressure, and habitat disturbance. Laonastes aenigmamus is listed in the IUCN Red List as endangered and in the Wildlife and Aquatic Red List of Lao, however, this species has not been listed in the Red Data Book or any conservation legislative documents of Vietnam.

  13. Screening of B chromosomes for presence of two genes in yellow-necked mice, Apodemus flavicollis (Mammalia, Rodentia)

    OpenAIRE

    Rajičić Marija; Adnađević Tanja; Stamenković Gorana; Blagojević Jelena; Vujošević Mladen

    2015-01-01

    B chromosomes (Bs) are a very heterogeneous group of extra chromosomes. In various species Bs occur with different nucleotide sequences ranging from repetitive to protein coding. In yellow-necked field mice, Apodemus flavicollis Bs are small euchromatic chromosomes and untill now, only few molecular analyses have been conducted. In this study we examined A. flavicollis individuals with different number of Bs for presence of two genes, C-KIT and 18S rRNA. Th...

  14. Screening of B chromosomes for presence of two genes in yellow-necked mice, Apodemus flavicollis (Mammalia, Rodentia

    Directory of Open Access Journals (Sweden)

    Rajičić Marija

    2015-01-01

    Full Text Available B chromosomes (Bs are a very heterogeneous group of extra chromosomes. In various species Bs occur with different nucleotide sequences ranging from repetitive to protein coding. In yellow-necked field mice, Apodemus flavicollis Bs are small euchromatic chromosomes and untill now, only few molecular analyses have been conducted. In this study we examined A. flavicollis individuals with different number of Bs for presence of two genes, C-KIT and 18S rRNA. The C-KIT proto-oncogene was found on Bs in three Canidae species and one Cervidae species. This gene is a coding receptor critical for proliferation and cell differentiation of hematopoietic, melanoblast and primordial germ cells, and is highly conserved within mammals. While using semiquantitative PCR, we did not notice any difference in the C-KIT band intensity among animals with different number of Bs (0-3. The presence of only one copy of C- KIT gene was confirmed using real time-PCR on genomic DNA of A. flavicollis specimens with different number of Bs. rRNA genes in eukaryotes’ genome are organized like units of tandem repeated sequences. The units form distinct clusters on one to several chromosome pairs. rRNA genes were found on Bs in different species including two species of genus Apodemus. One particular sample with 2 Bs showed the number of 18S rRNA gene about three times that of the calibrator 0 B sample. This result can indicate the presence of 18S rRNA gene on Bs, but its confirmation requires the implementation of other methods. Still, we can neither confirm nor deny the existence of pseudogen of tested target genes, or lose of exon 1 of C-KIT protooncogen in Bs of A. flavicollis. Our findings are further discussed. [Projekat Ministarstva nauke Republike Srbije, br. 173003

  15. The relationship of sex and ectoparasite infestation in the water rat Scapteromys aquaticus (Rodentia: Cricetidae) in La Plata, Argentina.

    Science.gov (United States)

    Lareschi, Marcela

    2006-06-01

    I studied the relationship between sex and infestation with ectoparasites in the water rat Scapteromys aquaticus from La Plata river marshland, Argentina. The Relative Density's Index (RDI) for males was 3.90% (females 3.60%). A total of 2653 ectoparasites were collected on 33 male hosts, and 1945 on 31 females. Ectoparasite specific richness (S) and diversity (H) were S = 14, H = 1.17 on males, and S = 10, H = 1.52 on females. The similarity between male and female rodents according to their ectoparasites was 75.00%. Although no ectoparasite species showed significant mean abundance (MA) differences between host sexes (p hosts (N = 2.01, p ectoparasite burden and specific richness. This information has epidemiological potential because the closely related Scapteromys tumidus is involved in the transmission of Rickettsia coronii, which causes Marsella fever in humans. PMID:18494333

  16. Population dynamics and bioenergetics of a fossorial herbivore, Thomomys talpoides (Rodentia: Geomyidae), in a spruce-fir sere

    Science.gov (United States)

    Andersen, Douglas C.; MacMahon, James A.

    1981-01-01

    Studies of the bioenergetics of the northern pocket gopher, Thomomys talpoides, are coupled with data on demography, activity budgets, and microclimates to model the energy requirements of individuals and populations in the Wasatch Mountains of Utah during 1976-1979. Metabolic rates during rest increased linearly with decreasing ambient temperature, but burrowing metabolic rates (16.3 mL O2 • h-1 • g-9.75) were independent of both temperature and physical properties of the soil. Radio-telemetry studies indicated that free-ranging gophers are active =50% of each day. Conservative estimates of true energy consumption were calculated using estimates of habitat-specific minimum daily burrowing requirements. Rates of burrowing measured in the laboratory were either ∞ 0.0 or ∞ 2.0 cm/min. The low burrowing rate was observed when the soil was frozen or saturated with water, as would occur in the field in early winter and in spring, respectively. Gophers burrowed through soil at the study site at an average rate of ∞ 1.5 cm/min. Belowground food energy densities at gopher foraging depth declined from 24.6 to 3.2 J/cm3 along a successional gradient (subalpine forb meadow to Engelmann spruce dominated forest). We conclude that individual gophers are food limited within the climax spruce seral stage. Further, daily energy costs associated with reproduction in females may exceed the belowground energy supply available in intermediate seral stages (aspen and subalpine fir). Reduction of burrowing rates for any reason will affect gophers in the late seral stages proportionately more than those resident in the meadow. The peak gopher densities recorded (from 62 individuals/ha in the meadow to 2 individuals/ha in spruce forest) support these inferences. Detailed demographic information was obtained only in the meadow seral stage. Adult survivorship was lower in winter than in summer and varied greatly between years (0.18-0.70 yr-1). Juvenile survivorship from weaning through the first year was comparable to adult annual rates. The fertility rate was 3.75 young • female-1 • yr-1. The energy supply and demand analyses indicate that the growth of Thomomys talpoides populations in the early seral stages is seldom directly limited by the amount of food present. From our demographic, environmental, and autecological studies we conclude that stochastic events associated with weather affect energy acquisition (burrowing) rates, and thus survivorship. In montane environments, such events may prevent populations from attaining sizes at which territorial behavior would hypothetically limit further increases. The energy flow through the meadow population at moderate to high )1976-1977) densities (at least 1100 MJ • ha-1 • yr-1) indicates that pocket gophers are proficient energy movers relative to non-fossorial small mammals. Subalpine T. talpoides populations appear commonly to attain such densities. More than 30% of the annual primary productivity allocated to belowground parts of meadow forbs may be consumed by gophers.

  17. The helminth parasites of two sympatric species of the genus Apodemus (Rodentia, Muridae) from south-eastern Slovakia

    Czech Academy of Sciences Publication Activity Database

    Ondríková, J.; Miklisová, D.; Ribas, Alexis; Stanko, M.

    2010-01-01

    Roč. 55, č. 4 (2010), s. 369-378. ISSN 1230-2821 Institutional research plan: CEZ:AV0Z60930519 Keywords : helminth community * rodents * south-eastern Slovakia Subject RIV: EG - Zoology Impact factor: 1.144, year: 2010

  18. Leishmania mexicana in Proechimys iheringi denigratus Moojen (Rodentia, Echimyidae in a region endemic for American cutaneous leishmaniasis

    Directory of Open Access Journals (Sweden)

    Air C. Barretto

    1985-12-01

    Full Text Available Three isolates of Leishmania were recovered from five of 27 specimens of the rodent Proechimys iheringi denigratus Moojen captured near Três Braços in the Atlantic Forest region of Bahia, Brazil. Two of these isolates were recovered from hamsters inoculated with a pooled triturate of liver, spleen and skin tissue from apparently healthy P. i. denigratus. The third isolate was recovered from a triturate of only skin tissue from another. Metastasis was observed in the inoculated hamsters, the parasites grew abundantly in artificial media and a typical suprapylarial pattern of infection in Lutzomyia longipalpis was produced indicating that the parasites belong to the Leishmania mexicana complex. All isolates reacted with Leishmania mexicana mexicana and Leishmania mexicana amazonensis monoclonal antibodies. The isoenzyme analysis differentiated these isolates from standard isolates of L. m. mexicana, L. m. amazonensis, L. m. aristedesi, L. m. pifanoi, L. m. garnhami and L. m. ssp.(Goiás-W. Barbosa. These isolates seem to be a subspecies of L. mexicana very closely related to L. m. amazonensis from which they differ by decreased electrophoretic mobility of GPI, PEP and ALAT. This is the first record of the isolation of a parasite of thegenus Leishmania in a rodent captured in the State of Bahia.Três isolados de Leishmania foram obtidos de cinco entre 27 exemplares do roedor Proechimys iheringi denigratus, capturados na região de Três Braços, na mata atlântica do Estado da Bahia, Brasil. O isolamento desse parasito foi feito através de inoculação de triturado de pele, baço e fígado em patas de hamsters. Em pelo menos um dos casos, (MTB-574, o parasito foi isolado da pele. Metas- tase foi observada nos hamsters inoculados, os parasitos cresceram abundantemente em meios artificiais de cultura e um padrão suprapapilario típico foi obtido em Lutzomyia longipalpis, indicando que o parasito pertence ao complexo L. mexicana. Todos os isolados reagiram positivamente com anticorpos monoclonais de L. m. mexicana e L. m. amazonensis. A análise isoenzimática diferenciou o parasito de isolados padrões de L. m. mexicana. L. m. amazonensis. L. m. aristedesi. L. m. pifanoi. L. m. garnhami e L. m. ssp(Goiás-W. Barbosa. O parasito parece ser uma subespécie de L. mexicana muito próxima à L. m. amazonensis, da qual difere pela menor mobilidade eletroforêtica de GPI, PEP e ALAT. Este e o primeiro registro do isolamento de um parasito do gênero Leishmania em um roedor capturado no Estado da Bahia.

  19. Geographic Variation in Skull Morphology of the Large Japanese Field Mice, Apodemus speciosus (Rodentia: Muridae) Revealed by Geometric Morphometric Analysis.

    Science.gov (United States)

    Shintaku, Yuta; Motokawa, Masaharu

    2016-04-01

    We analyzed geographic variation in skull morphology of the large Japanese field mouse (Apodemus speciosus) and determined changes in skull morphology that occurred during the evolutionary history of A. speciosus in relation to the estimated distribution range in the last glacial maximum (LGM). We analyzed 1,416 specimens from 78 localities using geometric morphometric techniques applied to the dorsal side of the cranium and mandible. While large variations within and among the populations in Honshu, Shikoku, and Kyushu were observed, geographic patterns were not observed. Hokkaido and peripheral island populations showed shared differentiation from the Honshu, Shikoku, and Kyushu populations with a larger skull and distinct mandible shape. In addition, these two groups also differed from each other in accumulated random shape variation. Common characteristics found in Hokkaido and peripheral island populations were considered to be the ancestral states, which were retained by geographic isolation from the main islands. Random variations in Hokkaido and the peripheral island populations were formed through stochastic processes in relation to their isolation. Characteristic morphologies widely found in the populations of Honshu, Shikoku, and Kyushu were considered to be derived states that expanded after separation from the peripheral islands. Complex geomorphology and a shift in distribution range related to climate change and altitudinal distribution are suggested to have formed the complex geographic variation in this species. PMID:27032678

  20. Phylogenetic analysis of the complete mitochondrial genome of the Korean field mouse Apodemus peninsulae (Rodentia, Murinae) from China.

    Science.gov (United States)

    Jeon, Mi Gyung; Kim, Ji Young; Park, Yung Chul

    2016-07-01

    We sequenced and characterized a complete mitogenome (KP671850) of the Chinese Apodemus peninsulae and compared it with a previously published mitogenome of the Korean A. peninsulae (NC016060). The total length of the Chinese A. peninsulae mitogenome is 16,457 bp. The mitogenome consists of 13 protein-coding genes (PCGs), two rRNA (12S rRNA and 16S rRNA) genes, 22 tRNA genes, and one D-loop region. The most common start codon was ATG, used in the nine PCGs for initiation. The mitogenomes of Chinese and Korean A. peninsulae showed 98.9% sequence similarity. The intra-/interspecific phylogeny of the Chinese A. peninsulae revealed that the Chinese A. peninsulae was well grouped with the Korean A. peninsulae. The clade of A. peninsulae was sister to that of Apodemus agrarius, Apodemus chejuensis, and Apodemus chevrieri. PMID:26006285

  1. Karyotype diversity suggests that Laonastes aenigmamus (Laotian rock rat) (Rodentia, Diatomyidae) is a multi-specific genus.

    Science.gov (United States)

    Richard, Florence; Gerbault-Seureau, Michèle; Douangboupha, Bounneuang; Keovichit, Kham; Hugot, Jean-Pierre; Dutrillaux, Bernard

    2016-09-01

    Laonastes aenigmamus (Khanyou) is a recently described rodent species living in geographically separated limestone formations of the Khammuan Province in Lao PDR. Chromosomes of 21 specimens of L. aenigmamus were studied using chromosome banding as well as fluorescent in situ hybridization (FISH) techniques using human painting, telomere repeats, and 28S rDNA probes. Four different karyotypes were established. Study with human chromosome paints and FISH revealed that four large chromosomes were formed by multiple common tandem fusions, with persistence of some interstitial telomeres. The rearrangements separating the different karyotypes (I to IV) were also reconstructed. Various combinations of Robertsonian translocations or tandem fusions involving the same chromosomes differentiate these karyotypes. These rearrangements create a strong gametic barrier, which isolates specimens with karyotype II from the others. C-banding and FISH with telomere repeats also exhibit large and systematized differences between karyotype II and others. These data indicate an ancient reproductive separation and suggest that Laonastes is not a mono-specific genus. PMID:27193170

  2. A Study on the Distribution, Morphology and Karyology of Tatera indica (Hardwicke, 1807) (Mammalia: Rodentia) in Turkey

    OpenAIRE

    YİĞİT, Nuri; ÇOLAK, Ercüment; VERİMLİ, Reyhan

    2001-01-01

    The Habitat, external and cranial morphologies, and karyotype of Turkish specimens of Tatera indica are described for the first time with this study. It was determined that Tatera indica was located in uncultivated arid and semi-arid habitat in southeastern Turkey. Its external and cranial characteristics are consistent with those detailed in published papers. The karyotype of Tatera indica is composed of 2n = 68, NF = 84 and NFa = 80.

  3. Descripción del postcráneo de Rhipidomys austrinus y Graomys griseoflavus (Rodentia, Cricetidae, Sigmodontinae

    Directory of Open Access Journals (Sweden)

    Luz V. Carrizo

    2011-09-01

    Full Text Available Se describe el esqueleto postcraneal de dos especies de roedores sigmodontinos Rhipidomys austrinus Thomas, 1921 y Graomys griseoflavus (Waterhouse, 1837. Se detalla cada estructura del esqueleto postcraneal sobre la base de la forma, tamaño, superficie y orientación de cada elemento esqueletal. La anatomía postcraneal de estas dos especies muestra caracteres asociados a patrones morfológicos diferentes, vinculados a su modo de locomoción. Es así que R. austrinus exhibe características en varios elementos del postcráneo consistente con una locomoción arborícola, mientras G. griseoflavus muestra atributos en su esqueleto relacionados a una locomoción de tipo terrestre.

  4. Distribución potencial de la chinchilla de cola corta (Chinchilla chinchilla, Rodentia) en el sudoeste de Bolivia

    OpenAIRE

    María Eugenia Copa Alvaro; Geovana Shirley Mendieta; Amy L. Deane

    2014-01-01

    Actualmente, la presencia de la chinchilla de cola corta (Chinchilla chinchilla), abundante en la región andina sudamericana durante el siglo pasado, ha sido fehacientemente documentada en pocas localidades del norte de Chile y Argentina; en Bolivia aunque su presencia es altamente probable, los últimos registros confiables datan de 1939. La cacería con fines peleteros disminuyó significativamente la población silvestre de la especie lo que derivó en un estatus de conservación "En Peligro Crí...

  5. Chromosome synapsis and recombination in simple and complex chromosomal heterozygotes of tuco-tuco (Ctenomys talarum: Rodentia: Ctenomyidae).

    Science.gov (United States)

    Basheva, Ekaterina A; Torgasheva, Anna A; Gomez Fernandez, Maria Jimena; Boston, Emma; Mirol, Patricia; Borodin, Pavel M

    2014-09-01

    The chromosomal speciation hypothesis suggests that irregularities in synapsis, recombination, and segregation in heterozygotes for chromosome rearrangements may restrict gene flow between karyotypically distinct populations and promote speciation. Ctenomys talarum is a South American subterranean rodent inhabiting the coastal regions of Argentina, whose populations polymorphic for Robertsonian and tandem translocations seem to have a very restricted gene flow. To test if chromosomal differences are involved in isolation among its populations, we examined chromosome pairing, recombination, and meiotic silencing of unsynapsed chromatin in male meiosis of simple and complex translocation heterozygotes using immunolocalization of the MLH1 marking mature recombination nodules and phosphorylated histone γH2A.X marking unrepaired double-strand breaks. We observed small asynaptic areas labeled by γH2A.X in pericentromeric regions of the chromosomes involved in the trivalents and quadrivalents. We also observed a decrease of recombination frequency and a distalization of the crossover distribution in the heterozygotes and metacentric homozygotes compared to acrocentric homozygotes. We suggest that the asynapsis of the pericentromeric regions are unlikely to induce germ cell death and decrease fertility of the heterozygotes; however, suppressed recombination in pericentromeric areas of the multivalents may reduce gene flow between chromosomally different populations of the Talas tuco-tuco. PMID:24924853

  6. Chemical composition of the freshwater prawn Cryphiops caementarius (Molina, 1782) (Decapoda: Palaemonidae) in two populations in northern Chile: reproductive and environmental considerations

    OpenAIRE

    Jorge E Moreno-Reyes; Carlos A Méndez-Ruiz; Gina X Díaz; Jaime A Meruane; Pedro H Toledo

    2015-01-01

    Reductions of its natural populations have led to recent efforts in small-scale aquaculture of the freshwater prawn Cryphiops caementarius, either for conservation or commercial purposes. However, the lack of knowledge about its nutritional requirements has been one of the major obstacles for its successful culture. Given its importance, this study determines and compares the chemical composition (moisture, ash, crude protein, total lipids and nitrogen free extract) of whole animals and main ...

  7. Integrated Use of Biomarkers (O : N Ratio and Acetylcholinesterase Inhibition) on Aulacomya ater (Molina, 1782) (Bivalvia: Mytilidae) as a Criteria for Effects of Organophosphate Pesticide Exposition

    OpenAIRE

    Eduardo Führer; Anny Rudolph; Claudio Espinoza; Rodrigo Díaz; Marisol Gajardo; Nuria Camaño

    2012-01-01

    The effect of residual concentrations of organophosphate pesticide chlorpyrifos (Lorsban 4E) on the activity of the acetylcholinesterase enzyme and oxygen : nitrogen ratio in the mussel Aulacomya ater was analyzed. Toxicity tests show a sensitivity to the pesticide in the bivalve estimated at 16 μg L-1 (LC50-96 hours). Concentrations between 0.2 and 1.61 μg L-1 were able to inhibit significantly the AChE activity, and concentrations between 0.8 and 1.61 μg L-1 stimulate ammonia excretion and ...

  8. Integrated Use of Biomarkers (O : N Ratio and Acetylcholinesterase Inhibition) on Aulacomya ater (Molina, 1782) (Bivalvia: Mytilidae) as a Criteria for Effects of Organophosphate Pesticide Exposition.

    Science.gov (United States)

    Führer, Eduardo; Rudolph, Anny; Espinoza, Claudio; Díaz, Rodrigo; Gajardo, Marisol; Camaño, Nuria

    2012-01-01

    The effect of residual concentrations of organophosphate pesticide chlorpyrifos (Lorsban 4E) on the activity of the acetylcholinesterase enzyme and oxygen : nitrogen ratio in the mussel Aulacomya ater was analyzed. Toxicity tests show a sensitivity to the pesticide in the bivalve estimated at 16 μg L(-1) (LC(50-96 hours)). Concentrations between 0.2 and 1.61 μg L(-1) were able to inhibit significantly the AChE activity, and concentrations between 0.8 and 1.61 μg L(-1) stimulate ammonia excretion and decrease oxygen : ammonia-N (O : N) ratio, with respect to the control group. A. ater proved to be a species sensitive to pesticide exposure and easy to handle in lab conditions. Thus, it is recommended as a bioindicator for use in programs of environmental alertness in the Eastern South Pacific coastal zone. PMID:22619673

  9. Integrated Use of Biomarkers (O : N Ratio and Acetylcholinesterase Inhibition on Aulacomya ater (Molina, 1782 (Bivalvia: Mytilidae as a Criteria for Effects of Organophosphate Pesticide Exposition

    Directory of Open Access Journals (Sweden)

    Eduardo Führer

    2012-01-01

    Full Text Available The effect of residual concentrations of organophosphate pesticide chlorpyrifos (Lorsban 4E on the activity of the acetylcholinesterase enzyme and oxygen : nitrogen ratio in the mussel Aulacomya ater was analyzed. Toxicity tests show a sensitivity to the pesticide in the bivalve estimated at 16 μg L-1 (LC50-96 hours. Concentrations between 0.2 and 1.61 μg L-1 were able to inhibit significantly the AChE activity, and concentrations between 0.8 and 1.61 μg L-1 stimulate ammonia excretion and decrease oxygen : ammonia-N (O : N ratio, with respect to the control group. A. ater proved to be a species sensitive to pesticide exposure and easy to handle in lab conditions. Thus, it is recommended as a bioindicator for use in programs of environmental alertness in the Eastern South Pacific coastal zone.

  10. LA VOZ NARRATIVA COMO COMPROMISO CON LA VERDAD ANÁLISIS DEL NARRADOR EN LA NOVELA LA NOCHE DE LOS TIEMPOS, DE MUÑOZ MOLINA

    OpenAIRE

    Enrique Arroyas

    2012-01-01

    Resumen: Este artículo consiste en un análisis de la voz narrativa de la novela La noche de los tiempos, según un modelo comunicativo que abarca tanto aspectos sintácticos y semánticos como pragmáticos que permitan arrojar luz sobre el sentido del texto. Desde un enfoque pragmático se analiza la finalidad de la narración como acto comunicativo en la que se plantea la relación del discurso con su contexto y del enunciador con el enunciatario. La elección de la voz narrativa y su focalización e...

  11. The physical, chemical and functional characterization of starches from Andean tubers: oca (Oxalis tuberosa Molina, olluco (Ullucus tuberosus Caldas and mashua (Tropaeolum tuberosum Ruiz & Pavón

    Directory of Open Access Journals (Sweden)

    Beatriz Valcárcel-Yamani

    2013-09-01

    Full Text Available The physical, chemical, and functional properties of starches isolated from the Andean tubers oca (Oxalis tuberosa M., olluco (Ullucus tuberosus C. and mashua (Tropaeolum tuberosum R. & P. were studied. The tubers were obtained from a local grocery. The morphology of the starch granules (size and shape was studied with scanning electron microscopy (SEM, which revealed ellipsoid, oval, conical, pear-shaped and prismatic forms: ellipsoids and oval granules with lengths up to 54.30 µm in oca; with lengths up to 32.09 µm for olluco starch granules; and with predominantly truncated spherical or oval forms and smaller dimensions (up to 16.29 um for mashua starch granules. Amylose contents were similar among the samples: 27.60% (oca, 26.49% (olluco and 27.44% (mashua. Olluco starch had less swelling power, forming opaque, less firm gels. All three starch gels showed the same stability on refrigeration and presented high syneresis under freezing temperatures, with a variation of 40.28 to 74.42% for olluco starch. The starches cooked easily, with high peak viscosity. The low gelatinization temperatures and high stability during cooling make these starches suitable feedstock for use in formulations that require milder processing temperatures and dispense freezing storage.

  12. The physical, chemical and functional characterization of starches from Andean tubers: oca (Oxalis tuberosa Molina), olluco (Ullucus tuberosus Caldas) and mashua (Tropaeolum tuberosum Ruiz & Pavón)

    OpenAIRE

    Beatriz Valcárcel-Yamani; Gerby Giovanna Rondán-Sanabria; Flavio Finardi-Filho

    2013-01-01

    The physical, chemical, and functional properties of starches isolated from the Andean tubers oca (Oxalis tuberosa M.), olluco (Ullucus tuberosus C.) and mashua (Tropaeolum tuberosum R. & P.) were studied. The tubers were obtained from a local grocery. The morphology of the starch granules (size and shape) was studied with scanning electron microscopy (SEM), which revealed ellipsoid, oval, conical, pear-shaped and prismatic forms: ellipsoids and oval granules with lengths up to 54.30 µm in oc...

  13. Sedimentología de las unidades carbonáticas del Triásico en el sector Molina de Aragón-Albarracín

    OpenAIRE

    Pérez-Arlucea, Marta

    1987-01-01

    [ES] cinco unidades litoestratigráficas bien diferenciadas, que se distribuyen en dos barras de litología carbonática, separadas por un tramo terrígeno-evaporítico. Estos grandes tramos se disponen en "onlap", presentando una mayor extensión areal, las unidades superiores respecto de las inferiores. El límite de la primera barra carbonática se encuentra dentro de la zona estudiada. Sin embargo el tramo lutíticoevaporítico y la barra superior ocupan toda esta región, acuñándo...

  14. In vitro activity on human gut bacteria of murta leaf extracts (Ugni molinae Turcz. ), a native plant from southern chile

    DEFF Research Database (Denmark)

    Shene, C.; Canquil, N.; Jorquera, M.;

    2012-01-01

    Despite the fact that murta infusions have been used to treat gut/urinary infections by native Chileans for centuries, the mechanisms promoting such effects still remain unclear. As a first attempt to unravel these mechanisms, human fecal samples were incubated in a medium containing water extract...... extracts was significantly (P <0.05) lower than that of penicillin (10 U), whereas the difference between activity of ML extracts and gentamicin (10 μg) was not significant (P > 0.05). No evidence of dependency between the antimicrobial activity of ML extracts and the enzymatic capability of the sensitive...

  15. Reassessment of morphology and historical distribution as factors in conservation efforts for the Endangered Patagonian Huemul Deer Hippocamelus bisulcus (Molina 1782

    Directory of Open Access Journals (Sweden)

    H.T. Force

    2012-11-01

    Full Text Available To assist with conservation of Endangered Patagonian Huemul Deer (Hippocamelus bisulcus, the Huemul Task Force (HTF reassessed information on appendicular morphology, paleobiogeography, and historical distribution as potential factors in recovery efforts. Traditional claims of being a mountain specialist of the Andes were refuted by empirical evidence showing huemul morphology to coincide with other cervids rather than the commonly implied homology to rock-climbing ungulates. It thus supports historical evidence of huemul in treeless habitat and reaching the Atlantic coast, which cannot be dismissed as past erroneous observations. Instead, pre- and post-Columbian anthropogenic impacts resulted in huemul displacement from productive sites and in survival mainly in remote and marginal refuge areas. The process of range contraction was facilitated by easy hunting of huemul, energetic incentives from seasonal fat cycles and huemul concentrations, the change from hunting-gathering to a mobile equestrian economy, and colonization with livestock. However, areas used presently by huemul, as supposed mountain specialists, are also used by wild and domestic ungulates that clearly are not considered mountain specialists, whereas the only other Hippocamelus successfully uses areas homologous to tree-less Patagonia. Rigid application of modern habitat usage to infer past habitat use and ignoring historic extra-Andean accounts is unwarranted; these conclusions reached by the HTF indicate new opportunities for recovery efforts by considering morphological and historical evidence. For instance, reintroductions to other portions of the landscape used formerly by huemul, which tend to be more productive sites than those currently occupied by many huemul groups, would present a promising avenue.

  16. Avaliação farmacognostica e da rotulagem das drogas vegetais boldo-do-chile (Peumus boldus Molina e camomila (Matricaria recutita L. comercializadas em Fortaleza, CE

    Directory of Open Access Journals (Sweden)

    F.P. SOARES

    2015-09-01

    Full Text Available RESUMO Boldo-do-chile (Peumus boldus e camomila (Matricaria recutita são plantas empregadas na fitoterapia principalmente para o tratamento de desordens hepáticas e intestinais, atuando também como anti-inflamatório e antiespasmódico, respectivamente. Por isso, o presente trabalho objetivou avaliar a qualidade farmacognostica dessas drogas vegetais comercializadas em Fortaleza (CE, além das informações de suas rotulagens. Quarenta e duas amostras de boldo, e quarenta e cinco amostras de camomila, procedentes de farmácias, de lojas de produtos naturais e de bancas de raizeiros, foram analisadas quanto à autenticidade, à pureza e às informações contidas na rotulagem desses produtos conforme legislação vigente. Na verificação de impurezas, 35,7% das amostras de boldo e 57,7% das amostras de camomila excederam o teor máximo de matéria estranha; no teor de cinzas totais, 33,3% das amostras de boldo foram reprovadas; rotulagens das amostras de boldo (100% e de camomila (96,6% apresentaram erros ou ausência de informações. Os resultados das análises confirmam, portanto, a necessidade urgente de melhor fiscalização e intervenção na produção e venda dessas e de outras drogas vegetais para adequação às normas vigentes.

  17. Instructions and Manuals

    DEFF Research Database (Denmark)

    Gigone, Fabio

    Kindergarten and Nursery (Giancarlo de Carlo associati) Inner city arts (Michael Maltzan Architecture) Colegio Gerardo Molina (Giancarlo Mazzanti arquitectos)......Kindergarten and Nursery (Giancarlo de Carlo associati) Inner city arts (Michael Maltzan Architecture) Colegio Gerardo Molina (Giancarlo Mazzanti arquitectos)...

  18. Ontogenetic variation in light interception, self-shading and biomass distribution of seedlings of the conifer Araucaria araucana (Molina K. Koch Variación ontogenética en la intercepción lumínica, autosombramiento y distribución de biomasa en plántulas de la conífera Araucaria araucana (Molina K. Koch

    Directory of Open Access Journals (Sweden)

    CHRISTOPHER H LUSK

    2006-09-01

    Full Text Available One of the factors thought to contribute to ontogenetic declines in plant growth rates is diminishing light interception efficiency, as a result of the difficulties of avoiding self-shading among a growing number of leaves, and by stems. The effects of plant size on self-shading and light interception have rarely been quantified, however. We used a three-dimensional digitising system to construct virtual models of the architecture of Araucaria araucana seedlings 71 to 358 mm tall, and modelled their light interception in the forest understorey using the program YPLANT. We also analyzed seedling allometry, to determine the combined effects of biomass distribution and self-shading on total light interception. Average light interception efficiencies calculated for A. araucana (29 % were the lowest reported for rainforest tree seedlings, reflecting the limitations imposed by short leaves, lack of petioles and an inability to develop planar foliage geometry on branches. Total light interception was related to seedling leaf area by an exponent of 0.735, reflecting increasing self-shading as seedlings grew bigger. However, because leaf area was related to seedling mass by an exponent of 1.24, light interception scaled nearly isometrically (0.91 power with seedling mass. This resulted from taller plants having proportionally thinner stems, and a smaller fraction of their biomass in roots. Thus, an ontogenetic increase in self-shading in A. araucana is largely offset by allocation changes which increase leaf area ratio as seedlings grow bigger. These mechanisms conserving the relationship of light interception with plant mass seem likely to be restricted to species with long-lived leaves, growing in humid situations protected from wind stress. In open habitats, where wind and drought stress likely make such allocation patterns less feasible, the role of self-shading in ontogenetic declines in relative growth rate may be more evidentLa caída en la eficiencia de intercepción de la luz es considerada como uno de los factores responsables del declive ontogenético en las tasas de crecimiento relativo de las plantas, debido a la dificultad de evitar el autosombramiento entre un creciente número de hojas. Sin embargo, rara vez se ha cuantificado el efecto de tamaño de las plantas sobre el autosombramiento y la eficiencia en intercepción de la luz. Utilizamos un sistema de digitalización para construir modelos virtuales tridimensionales de la arquitectura de plántulas 71-358 mm de alto de la conífera Araucaria araucana, y modelamos su intercepción de la luz en el sotobosque mediante el programa YPLANT. Analizamos además la alometría de las plántulas para determinar los efectos combinados de la distribución de biomasa y el autosombramiento sobre la intercepción total de luz a nivel de la planta entera. La eficiencia promedio de intercepción de la luz de A. araucana (29 % fue la más baja documentada para plántulas de especies de bosques húmedos, reflejando las limitaciones impuestas por hojas cortas, carencia de pecíolos, y la incapacidad de desarrollar follaje plagiotrópico. La intercepción total de luz por las plántulas fue proporcional al área foliar0,735, producto de un aumento en el autosombramiento en función del tamaño. Sin embargo, debido a la relación del área foliar con la potencia 1,24 de la masa de las plántulas, la intercepción de luz se acercó a la proporcionalidad directa (exponente 0,91 con la masa. Este patrón fue producto de la relativa delgadez de los tallos de las plántulas grandes, y su baja proporción de biomasa radicular. Por tanto, el declive ontogenético en la eficiencia de intercepción de la luz fue en gran medida compensada por cambios de asignación que aumentaron la superficie foliar de las plántulas grandes. Estos mecanismos que conservaron la relación de la ganancia potencial de carbono con la masa de las plántulas probablemente serán vistos solamente en especies con hojas muy longevas, en hábitats húmedos con poco viento. En ambientes abiertos, donde los estrés por sequía y viento podrían seleccionar en contra tales patrones de asignación, es probable que se evidencie más claramente el rol del autosombramiento en los declives ontogenéticos en la tasa de crecimiento relativo

  19. Indicadores de condición larvaria aplicados al camarón de río del norte Cryphiops caementarius (Molina, 1782, en condiciones de cultivo controlado Larval condition indicators applied to the northern river shrimp Cryphiops caementarius (Molina, 1782, under condition of controlled cultivation

    Directory of Open Access Journals (Sweden)

    María C Morales

    2012-09-01

    Full Text Available Se estudia el desarrollo larvario del camarón de río del norte de Chile, Cryphiops caementarius, desde el estado de zoea 1 hasta el primer juvenil, caracterizando y analizando criterios que verificaron la aplicación de indicadores de tipo morfológico y de comportamiento para la evaluación de la condición larvaria de la especie, en condiciones de cultivo. Las larvas, se mantuvieron en cultivo, en un tanque de 250 L con agua a 20 psu y temperatura de 25 ± 1°C, controlada con termostato y con un recambio del 100% diariamente. La alimentación consistió en microalgas (Nannochloris sp. e Isochrysis sp., rotíferos (Brachionus plicatilis, nauplios de Artemia franciscana y alimento formulado. Se utilizaron cinco indicadores de carácter morfológico y de comportamiento aplicados a las larvas de C. caementarius: llenado intestinal, estado de la glándula digestiva, desarrollo branquial, comportamiento natatorio y respuesta fototáctica. Estos indicadores, permitieron determinar el estado de condición y calidad de las larvas de C. caementarius, logrando un efectivo seguimiento y asociación de cada uno de ellos, con cada estado de desarrollo larvario, estandarizando características deseables en las larvas y evidenciando resultados verificables, que permitan establecer un adecuado plan de seguimiento del cultivo, optimizar los protocolos de manejo y de alimentación de las larvas. Además de cada indicador, fue posible desglosar una amplia gama de potenciales estudios a realizar, basados en las relaciones que la morfología y el comportamiento larvario mantienen con las capacidades fisiológicas de las larvas en desarrollo.The larval development of the Chilean northern river shrimp Cryphiops caementarius was studied, from the condition of zoea 1 up to the condition of juvenile stage, analyzing and characterizing diverse criteria that allowed checking the application of morphological and behavioral indicators for the evaluation of the larval quality of the species, under conditions of culture. The larvae, were cultured, in a tank of 250 L with water at 20 psu, at a constant temperature (25° ± 1°C, controlled with a thermostat and with 100% refill every day. The diet consisted of microalgae (Nannochloris sp. and Isochrysis sp., rotifers (Brachionus plicatilis, nauplii of Artemia franciscana and formulated food. Five indicators were used, considering morphologic and behavior aspects: intestinal fill, midgut gland condition, gill development, swimming behavior and phototactic response. The indicators selected in the present work, were feasible of being used for the determination of the condition and quality of the larvae of C. caementarius, being able to make an effective follow-up and association with every condition of larval development, standardize desirable characteristics in the larvae and demonstrate verifiable results, using a protocol for culture and food supply. Moreover, it was possible to identify an extensive range of potential studies, based on the relationships that the morphology and the larval behavior support with the physiological capacities of the larvae in development.

  20. Podding of juvenile king crabs Lithodes santolla (Molina, 1782 (Crustacea in association with holdfasts of Macrocystis pyrifera (Linnaeus C. Agardh, 1980 Agregaciones de juveniles de centolla Lithodes santolla (Molina, 1782 (Crustacea en asociación con discos de fijación de Macrocystis pyrifera (Linnaeus C. Agardh, 1980

    Directory of Open Access Journals (Sweden)

    César A Cárdenas

    2007-05-01

    Full Text Available Underwater photographic records and sampling were carried out in Steamer Bay, Strait of Magellan, Chile, to study the spatial distribution patterns of juvenile king crabs Lithodes santolla during late winter and early spring in 2006. Observations were made on the relationship between these crabs and the holdfasts and stipes of the large kelp Macrocystis pyrifera. Dense aggregations, known as “pods”, of juvenile king crab (34-75 mm CL were observed and photographed for the first time in specific areas of the embayment in relation to Macrocystis; pod abundance varied between 2 and 70 ind·m-2. Maximum abundance was detected on plants having holdfasts > 15 cm in diameter and abundant stipes and sporophylls. The ratio between male and female abundance was nearly 1:1. This study attempts to bring attention to previously unknown ecological roles of the kelp M. pyrifera in relation to its associated benthic fauna in habitats near the southern tip of South America as background information on the ecological functions of this species prior to allowing its industrial-scale exploitationSe efectuaron registros fotográficos y colecta de muestras en bahía Steamer, estrecho de Magallanes, Chile, para estudiar los patrones de distribución espacial de juveniles de la centolla Lithodes santolla durante fines de invierno y comienzo de la primavera en 2006. Las observaciones fueron realizadas en relación a presencia de centollas juveniles en discos de fijación y estipes de la macroalga parda Macrocystis pyrifera. Se observaron y fotografiaron por primera vez, densas agregaciones de juveniles de centolla (34-75 mm LC, conocidas como “pods”, en áreas específicas de la bahía relacionadas con Macrocystis. La abundancia varió entre 2 y 70 ind·m-2. Las mayores abundancias se detectaron en plantas con disco de fijación con diámetros > 15 cm y con presencia de abundantes estipes y esporofilas. La proporción de abundancia entre machos y hembras fue cercana a 1:1. El presente estudio pretende llamar la atención de los roles ecológicos, previamente desconocidos, del alga M. pyrifera en relación a la fauna bentónica asociada a hábitats distribuidos en el extremo sur de Sudamérica básica para conocer las funciones ecológicas de esta macroalga antes de permitir su explotación a escala industrial

  1. Descripción histológica y caracterización de los estados de madurez gonadal de hembras de Cryphiops caementarius (Molina, 1782 (Decapoda: Palaemonidae Histological description and characterization of the ovarian cycle of Cryphiops caementarius (Molina, 1782 (Decapoda: Palaemonidae

    Directory of Open Access Journals (Sweden)

    Jorge E Moreno

    2012-09-01

    Full Text Available La extracción indiscriminada y alteraciones del medio natural, han puesto en peligro de extinción al único Palaemónido dulceacuícola de interés comercial, presente en aguas continentales chilenas. Aun cuando esta situación, ha despertado el interés en estudios que permitan su reproducción controlada en cautiverio, actualmente es escaso el conocimiento acerca de aspectos reproductivos básicos de esta especie. Dada su importancia, este trabajo describe y caracteriza el proceso completo de maduración gonadal en hembras de Cryphiops caementarius, en base a cambios en la morfología externa e interna del ovario. Hembras adultas extraídas del río Limarí, fueron disectadas y sus ovarios removidos y preparados para análisis histológicos. Tejido fibromuscular divide el tejido gonadal de cada lóbulo en sacos ováricos de forma semicónica (conos de maduración, al interior del los cuales se encuentran ovocitos en diferentes estados de desarrollo de acuerdo a observaciones microscópicas de tamano, morfología y tinción con H-E, las células reproductoras femeninas se clasificaron en seis tipos, ovogonias (Ov, ovocitos previtelogénicos tempranos (O1, ovocitos previtelogénicos tardíos (O2, ovocitos vitelogénicos tempranos (O3, ovocitos vitelogénicos tardíos (O4 y ovocitos Maduros (OM. El ciclo de madurez gonadal se dividió en cinco estados según la cantidad y tipo de ovocitos presentes. Los estados 0 y I, corresponden a desovado y previtelogénesis. Los estados II y III a vitelogénesis temprana y vitelogénesis intermedia, mientras el estado IV corresponde a madurez avanzada. La presencia de ovogonias y ovocitos previtelogénicos junto a ovocitos completamente maduros en el estado de madurez avanzada, refleja la capacidad de esta especie de realizar ciclos consecutivos de madurez en intervalos cortos de tiempo.Its indiscriminate extraction and alterations of its natural environment, has put in danger of extinction the only commercial freshwater Palemonid present in Chilean inland waters. Even though this situation has awakened interest in studies which allow its controlled reproduction in captivity, currently little is known regarding basic reproductive aspects of this species. Given its relevance, this work describes and characterizes the whole ovarian cycle of Cryphiops caementarius, based on changes in external and internal ovarian morphology. Adult C. caementarius females, obtained from Limarí River, were dissected and its ovaries removed and prepared for histological examinations. Fibromuscular tissue divides the ovarian tissue of each lobe into cone-shaped ovarian pouches (Maturation cones, each one containing various steps of oocytes according to the stages of ovarian development. Based on light microscopic observations of cells' sizes, morphology, and staining with H-E, the female germ cells could be classified into six different types, which include oogonia (Ov, early previtellogenic oocytes (O1, late previtellogenic oocytes (O2, early vitellogenic oocytes (O3, late vitellogenic oocytes (O4 and mature oocytes (OM. The ovarian cycle is divided into five stages based on the amount and types of oocytes present in each stage. Stage 0 and I are spawned and previtellogenesis stages. Stage II and III are early and intermediate vitellogenesis stages, while stage IV is maturity advanced stage. The presence of oogonia and previtellogenic oocytes among fully mature oocytes in stage IV reflect the capacity of the ovary of C. caementarius females to start a new full maturity cycle in a short time period.

  2. Infecção experimental de Calomys callosus (Rengger, 1830, (Cricetidae - Rodentia a quatro espécies de parasitos

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    Dalva A. Mello

    1980-12-01

    Full Text Available Neste trabalho foram estudados exemplares do roedor, Calomys callosus, nascidos em laboratório, a infecções experimentais com quatro parasitos: Plasmodium berghei, Leishmania mexicana amazonensis, Schistosoma mansoni e Hymenolepsis nana. A positividade das infecções foi de 80% para os três primeiros parasitos e 0 para H. nana. C. callosus é um roedor de excelente adaptação em laboratório e de fácil manuseio. Acredita-se que, de acordo com os resultados obtidos neste trabalho, este animal poderia ser um bom modelo experimental de laboratório para certos agentes patogênicos.

  3. Infecção experimental de Calomys callosus (Rengger, 1830), (Cricetidae - Rodentia) a quatro espécies de parasitos

    OpenAIRE

    1980-01-01

    Neste trabalho foram estudados exemplares do roedor, Calomys callosus, nascidos em laboratório, a infecções experimentais com quatro parasitos: Plasmodium berghei, Leishmania mexicana amazonensis, Schistosoma mansoni e Hymenolepsis nana. A positividade das infecções foi de 80% para os três primeiros parasitos e 0 para H. nana. C. callosus é um roedor de excelente adaptação em laboratório e de fácil manuseio. Acredita-se que, de acordo com os resultados obtidos neste trabalho, este animal pode...

  4. Variación heterocromática en Proechimys semispinosus (Rodentia: Echimyidae) de la región pacífica colombiana

    OpenAIRE

    Bueno Martha Lucía; Gómez Laverde Marcela

    1993-01-01

    The presence oftwo chromosomal races is reported in a comparative study of populatlons of Proechimys semlspinosus from the Pacific lowlands of Colombia. These races are differenciated by the constitutive heterochromatin found using the C-band technlque. The population from Nariño locality lacks centromeric heterochromatin and has large blocks of telomeric heterochromatin in several chromosomes while the population from Chocó loca lity has small blocks of centromeric heterochromatin in the maj...

  5. Variación heterocromática en Proechimys semispinosus (Rodentia: Echimyidae de la región pacífica colombiana

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    Bueno Martha Lucía

    1993-12-01

    Full Text Available The presence oftwo chromosomal races is reported in a comparative study of populatlons of Proechimys semlspinosus from the Pacific lowlands of Colombia. These races are differenciated by the constitutive heterochromatin found using the C-band technlque. The population from Nariño locality lacks centromeric heterochromatin and has large blocks of telomeric heterochromatin in several chromosomes while the population from Chocó loca lity has small blocks of centromeric heterochromatin in the majority of the chromosomes and small and medium size blocks of telomeric heterochromatin only in three pairs of chromosomes. Thesimilarity between the heterochromatin pattem in the Gorgona island (Gómez-Laverde et al" 1990 and Nariño populations suggests a very close relation ship and supports the affinities ofthe island's biota with the southwestem region of Colombia and northem region of Ecuador previously reported in others biological groups.Mediante un estudio comparativo en poblaciones de Proechimys semispinosus del pacífico colombiano se registra la presencia de dos razas cromosómicas; estas se diferencian por el patrón de heterocromatina constitutiva detectable mediante las técnicas de bandas C. La población de la localidad de Nariño presenta ausencia casi total de heterocromatina centromérica y presencia de bloques grandes de heterocromatina telomérica en varios cromosomas, mientras que la población de la localidad del Chocó presenta bloques muy pequeños de heterocromatina centromérica en la mayoría de los cromosomas y bloques pequeños y medianos teloméricos solo en tres pares cromosómlcos. La similitud del patrón de heterocromatina, entre las poblaciones de la isla Gorgona (Gómez-Laverde et al" 1990 y de Nariño, sugiere una estrecha relación entre ellas; este hecho se suma a las evidencias sobre la afinidad de la biota de la isla con la región su roccidental de Colombia y del norte del Ecuador, reportada en otros grupos biológicos.

  6. Parasitism of two zoonotic reservoirs Dasyprocta leporina and D. fuliginosa (Rodentia from Amazonas, with Trichostrongylina nematodes (Heligmonellidae: description of a new genus and a new species

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    Alessandra Queiroga Gonçalves

    2007-09-01

    Full Text Available A new genus and a new species of Heligmonellidae nematodes are described parasiting the stomach of three agoutis (two Dasyprocta fuliginosa and one D. leporina captured in the middle and high Negro river microregion, state of Amazonas, Brazil. The new genus, as well as its type-species, are closely related to the trichostrongylids included in Fuellebornema, particularly on what concerns the pattern of the caudal bursa, but differing from them by the characteristics of the synlophe, that presents a poorly developed carene, when compared to the referred number of body ridges in Freitastrongylus n. gen. and consequently in F. angelae n. sp.,in which the ridges are well developed and the carene at mid-body has a similar size when compared to the ridge situated in front of the right field (ridge no. 5. Caudal bursa is of the type 1-4, with rays 9 shorter than rays 10, with a very long genital cone.

  7. Causes and consequences of change rates in the habitat of the threatened tropical porcupine, Sphiggurus mexicanus (Rodentia: Erethizontidae) in Oaxaca, Mexico: implications for its conservation.

    Science.gov (United States)

    Lorenzo, Consuelo; Sántiz, Eugenia C; Navarrete, Darío A; Bolaños, Jorge

    2014-12-01

    Land use changes by human activities have been the main causes of habitats and wildlife population degradation. In the Tehuantepec Isthmus in Oaxaca, the tropical habitat of the porcupine Sphiggurus mexicanus has been subject to vegetation and land use changes, causing its reduction and fragmentation. In this study, we estimated vegetation cover and land use (δn) change rates and assessed habitat availability and potential cor- ridors for possible porcupine movements to avoid its isolation. In the study area, the type of vegetation with the most change rate value was the savanna (δn = -2.9), transformed into induced grasslands. Additionally, we have observed the porcupine (since 2011) in semi-deciduous (δn = -0.87) and tropical dry (δn = -0.89) forests that have been transformed in temporal agriculture and mesquite and induced grasslands. The vegetation inhabited by the porcupine resulted in recording a total of 64 plant species (44 trees, nine vines, seven herbs, four shrubs), of which the vine Bunchosia lanceolata showed the highest importance value (41.85) followed by the trees Guazuma ulmifolia (22.71), Dalbergia glabra (18.05), and Enterolobium cyclocarpum (17.02). The habitat evaluation and potential corridor analysis showed that only 1 501.93ha could be considered as suitable habitats with optimum structural conditions (coverage, surface, and distances to transformed areas) to maintain viable populations of S. mexicanus, and 293.6 ha as corridors. An increasing destruction of the porcupines' habitat has been observed in the study area due to excessive logging, and actions for this species and its habitat conserva- tion and management have to be taken urgently. PMID:25720182

  8. Biome specificity of distinct genetic lineages within the four-striped mouse Rhabdomys pumilio (Rodentia: Muridae) from southern Africa with implications for taxonomy.

    Science.gov (United States)

    du Toit, Nina; van Vuuren, Bettine Jansen; Matthee, Sonja; Matthee, Conrad A

    2012-10-01

    Within southern Africa, a link between past climatic changes and faunal diversification has been hypothesized for a diversity of taxa. To test the hypothesis that evolutionary divergences may be correlated to vegetation changes (induced by changes in climate), we selected the widely distributed four-striped mouse, Rhabdomys, as a model. Two species are currently recognized, the mesic-adapted R. dilectus and arid-adapted R. pumilio. However, the morphology-based taxonomy and the distribution boundaries of previously described subspecies remain poorly defined. The current study, which spans seven biomes, focuses on the spatial genetic structure of the arid-adapted R. pumilio (521 specimens from 31 localities), but also includes limited sampling of the mesic-adapted R. dilectus (33 specimens from 10 localities) to act as a reference for interspecific variation within the genus. The mitochondrial COI gene and four nuclear introns (Eef1a1, MGF, SPTBN1, Bfib7) were used for the construction of gene trees. Mitochondrial DNA analyses indicate that Rhabdomys consists of four reciprocally monophyletic, geographically structured clades, with three distinct lineages present within the arid-adapted R. pumilio. These monophyletic lineages differ by at least 7.9% (±0.3) and these results are partly confirmed by a multilocus network of the combined nuclear intron dataset. Ecological niche modeling in MaxEnt supports a strong correlation between regional biomes and the distribution of distinct evolutionary lineages of Rhabdomys. A Bayesian relaxed molecular clock suggests that the geographic clades diverged between 3.09 and 4.30Ma, supporting the hypothesis that the radiation within the genus coincides with paleoclimatic changes (and the establishment of the biomes) characterizing the Miocene-Pliocene boundary. Marked genetic divergence at the mitochondrial DNA level, coupled with strong nuclear and mtDNA signals of non-monophyly of R. pumilio, support the notion that a taxonomic revision of the genus is needed. PMID:22728170

  9. Ectoparasites of rodents in Southern Africa: two new species of Laelaps Koch, 1836 (Acari: Laelapidae) ectoparasitic on Rhabdomys pumilio (Sparrman) (Rodentia: Muridae).

    Science.gov (United States)

    Matthee, Sonja; Ueckermann, Edward A

    2009-05-01

    Laelaps horaki n. sp. and L. radovskyi n. sp. are described from the pelage of the rodent Rhabdomys pumilio (Sparrman) in the Western Cape Province, South Africa. The formal taxonomic description and illustrations are derived from adults (females and males) and deutonymphs. A key to southern African species of Laelaps Koch, 1836 is given. PMID:19337857

  10. Ectoparasites of rodents in Southern Africa: a new species of Androlaelaps Berlese, 1903 (Acari: Parasitiformes: Laelapidae) from Rhabdomys pumilio (Sparrman) (Rodentia: Muridae).

    Science.gov (United States)

    Matthee, Sonja; Ueckermann, Edward A

    2008-07-01

    Androlaelaps rhabdomysi n. sp. is described from the pelage of the endemic rodent Rhabdomys pumilio (Sparrman) in the Western Cape Province, South Africa. The formal taxonomic description and illustrations are derived from adults (female and male) and deutonymphs. The specimens are similar in appearance to two congeneric species A. dasymys (Radford, 1939) and A. fahrenholzi (Berlese, 1911), but differ in the following features: genital shield long and almost parallel-sided; metapodal shield elongate; and anal shield longer than wide. Furthermore, the pilus dentilis on the fixed cheliceral digit of A. rhabdomysi is a rather broad sausage-shape and slightly constricted medially, whereas in the other two species it has an inflated base and is slender distally. PMID:18535789

  11. "Confirmation of Meriones libycus (Rodentia; Gerbillidae) as the Main Reservoir Host of Zoonotic Cutaneous Leishmaniasis in Arsanjan, Fars Province, South of Iran (1999-2000)"

    OpenAIRE

    Y Rassi; Jalali, M.; E. Javadian; MH Moatazedian

    2001-01-01

    This study was carried out in Arsanjan county Fars province, a new focus of ZCL, during 1999-2000. Totally fifty nine Meriones libycus captured by live traps and four out of them (6.8%) were naturally infected with parasites. Parasites were cultured in monophasic medium RPMI 1640 and isolated promastigotes were identified using RAPD-PCR test in Medical Parasitology Unit of Shiraz University of Medical Sciences. The results showed that parasites were L. major, so, Meriones libycus was known th...

  12. "Confirmation of Meriones libycus (Rodentia; Gerbillidae as the Main Reservoir Host of Zoonotic Cutaneous Leishmaniasis in Arsanjan, Fars Province, South of Iran (1999-2000"

    Directory of Open Access Journals (Sweden)

    Y Rassi

    2001-09-01

    Full Text Available This study was carried out in Arsanjan county Fars province, a new focus of ZCL, during 1999-2000. Totally fifty nine Meriones libycus captured by live traps and four out of them (6.8% were naturally infected with parasites. Parasites were cultured in monophasic medium RPMI 1640 and isolated promastigotes were identified using RAPD-PCR test in Medical Parasitology Unit of Shiraz University of Medical Sciences. The results showed that parasites were L. major, so, Meriones libycus was known the principal reservoir of ZCL in the rural region of Arsanjan. Rhombomys opimus and Tatera indica were absent in the study areas.

  13. Rediscovery of the Dinagat Bushy-tailed Cloud Rat Crateromys australis (Musser, Heaney & Rabor, 1985 (Mammalia: Rodentia: Muridae from Dinagat Island, Philippines.

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    Milada Řeháková

    2015-06-01

    Full Text Available The Dinagat Bushy-tailed Cloud Rat Crateromys australis belongs to the group of Cloud Rats, arboreal and folivorous nocturnal rodents endemic to the forests of the Philippines.  The species, endemic to a small island Dinagat in the Philippines, was discovered and captured in 1975.  Since then, despite repeated surveys, no specimen was found until 2012.  It is listed as Critically Endangered by IUCN Red List and was even believed to be extinct.  Finally, Dinagat Bushy-tailed Cloud Rat was rediscovered in January 2012 and its presence confirmed on Dinagat Island.  The rediscovery of this species underlines the local, national and international importance of Dinagat Island (or Dinagat-Siargao cluster of islands, as the most distinct subcentre of species endemism within the Greater Mindanao Faunal Region.  Unfortunately, only one locally protected area exists on the whole island and none of the last remaining native forest habitats on Dinagat are currently protected at the national level.  Mining and habitat destruction constitute a serious threat to this species.  We believe that this rediscovery may provide some important and timely impetus and urgency to the need for a more rational, scientifically-based and island-wide, development program on Dinagat by also incorporating an island/region-wide biodiversity conservation strategy that would help ensure the effective, longer-term protection of the larger majority of the few remaining natural habitats in this region. 

  14. UN ÍNDICE PARA LA EVALUACIÓN DEL HÁBITAT DE AGOUTI TACZANOWSK/1 (RODENTIA: AGOUTIDAE) EN ÁREAS DE BOSQUE ANDINO NUBLADO

    OpenAIRE

    Jairo Pérez-Torres

    2002-01-01

    Se presenta un índice que permitirá evaluar el hábitat de la "Lapa andiim" o "Tinajo" (Agouti taczanowskii) en zonas de bosque andino nublado. El objetivo fundamental de este índice, es obtener elementos que sirvan para la toma de decisiones en cuanto al diseño de áreas de reserva y planes de manejo sobre esta especie. Este índice se basa en la aplicación de criterios tanto cualitativos como cuantitativos, los cuales son tabulados y computados para sacar un valor de calidad de hábitat para ca...

  15. Biochemical Changes of the Organism of Apodemus flavicollis (Rodentia: Muridae Under Conditions of Environmental Anthropogenic Pollution by Heavy Metals in Northern Areas of Ukraine

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    Svitlana V. Zadyra

    2014-04-01

    Full Text Available The present research dedicates the integral assessment of biochemistry indexes of nature populations of rodents under conditions of environment pollution by heavy metals. The raised content in soils of mobile forms Pb, Cd, Cr, Ni and Co was revealed оn distance of 500 m to the South-West from Tripillya Thermal Power Plant (Kyiv region, Ukraine. That’s considerably (3–5 times exceeds levels for territory of Kaniv Nature Reserve (Cherkassy region, Ukraine. Territory of National Nature Park “Holosiivsky” (Kyiv, Ukraine characterized by rather increased content of active form of researched heavy metals especially Pb. Increase of the concentration of diene conjugates (3–7 times and malonic dialdehyde (2–4 times in yellow-necked mouse liver (Apodemus flavicollis of under pollution by heavy metals has been discovered. Insignificant increasing of content of Schiff basis in liver cells of rodents in region of impact of Tripillya TPP (in 2 times in spring and in summer, in autumn – in 2.5 times was detected. Seasonal dynamics of the maintenance of lipid peroxidation has been revealed. The registered changes of biochemical indicators testify about presence ecological-biochemical stress in an organism of the yellow-necked mouse in the district of influence of Tripillya TPP.

  16. Panic-like defensive behavior but not fear-induced antinociception is differently organized by dorsomedial and posterior hypothalamic nuclei of Rattus norvegicus (Rodentia, Muridae

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    A.F. Biagioni

    2012-04-01

    Full Text Available The hypothalamus is a forebrain structure critically involved in the organization of defensive responses to aversive stimuli. Gamma-aminobutyric acid (GABAergic dysfunction in dorsomedial and posterior hypothalamic nuclei is implicated in the origin of panic-like defensive behavior, as well as in pain modulation. The present study was conducted to test the difference between these two hypothalamic nuclei regarding defensive and antinociceptive mechanisms. Thus, the GABA A antagonist bicuculline (40 ng/0.2 µL or saline (0.9% NaCl was microinjected into the dorsomedial or posterior hypothalamus in independent groups. Innate fear-induced responses characterized by defensive attention, defensive immobility and elaborate escape behavior were evoked by hypothalamic blockade of GABA A receptors. Fear-induced defensive behavior organized by the posterior hypothalamus was more intense than that organized by dorsomedial hypothalamic nuclei. Escape behavior elicited by GABA A receptor blockade in both the dorsomedial and posterior hypothalamus was followed by an increase in nociceptive threshold. Interestingly, there was no difference in the intensity or in the duration of fear-induced antinociception shown by each hypothalamic division presently investigated. The present study showed that GABAergic dysfunction in nuclei of both the dorsomedial and posterior hypothalamus elicit panic attack-like defensive responses followed by fear-induced antinociception, although the innate fear-induced behavior originates differently in the posterior hypothalamus in comparison to the activity of medial hypothalamic subdivisions.

  17. Panic-like defensive behavior but not fear-induced antinociception is differently organized by dorsomedial and posterior hypothalamic nuclei of Rattus norvegicus (Rodentia, Muridae)

    Science.gov (United States)

    Biagioni, A.F.; Silva, J.A.; Coimbra, N.C.

    2012-01-01

    The hypothalamus is a forebrain structure critically involved in the organization of defensive responses to aversive stimuli. Gamma-aminobutyric acid (GABA)ergic dysfunction in dorsomedial and posterior hypothalamic nuclei is implicated in the origin of panic-like defensive behavior, as well as in pain modulation. The present study was conducted to test the difference between these two hypothalamic nuclei regarding defensive and antinociceptive mechanisms. Thus, the GABAA antagonist bicuculline (40 ng/0.2 µL) or saline (0.9% NaCl) was microinjected into the dorsomedial or posterior hypothalamus in independent groups. Innate fear-induced responses characterized by defensive attention, defensive immobility and elaborate escape behavior were evoked by hypothalamic blockade of GABAA receptors. Fear-induced defensive behavior organized by the posterior hypothalamus was more intense than that organized by dorsomedial hypothalamic nuclei. Escape behavior elicited by GABAA receptor blockade in both the dorsomedial and posterior hypothalamus was followed by an increase in nociceptive threshold. Interestingly, there was no difference in the intensity or in the duration of fear-induced antinociception shown by each hypothalamic division presently investigated. The present study showed that GABAergic dysfunction in nuclei of both the dorsomedial and posterior hypothalamus elicit panic attack-like defensive responses followed by fear-induced antinociception, although the innate fear-induced behavior originates differently in the posterior hypothalamus in comparison to the activity of medial hypothalamic subdivisions. PMID:22437484

  18. Trichospirura aethiopica n. sp. (Nematoda: Rhabdochonidae from Malacomys longipes (Rodentia: Muridae in Gabon, first record of the genus in the Ethiopian Realm

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    Bain Odile

    2013-01-01

    Full Text Available Trichospirura aethiopica n. sp. is described from unidentified tubular structures (pancreatic ducts? near the stomach of the murid Malacomys longipes Milne-Edwards, 1877 in Gabon. The extremely long and narrow buccal capsule, posterior position of the vulva, unequal spicules and absence of caudal alae readily identified the specimens as belonging to Trichospirura Smith & Chitwood, 1967, but a combination of several characters distinguished them from the described species in this genus. Males of the new species are characterized by the absence of precloacal papillae, the presence of four pairs of postcloacal papillae and a left spicule length of 165–200 μm. With only five nominal and one unnamed species, the host range of Trichospirura extends into the Neotropical, Indo-Malayan and Ethiopian Realms and comprises three classes of vertebrates, Amphibia, Reptilia and Mammalia, suggesting a larger species diversity than that currently recorded. Detection is difficult as predilection sites are often outside the gut lumen. It was noted that, irrespective of their geographic origin, species from mammals share certain characters (shorter left spicule and absence of precloacal papillae that oppose them to those from amphibians and reptiles. A hypothesis for the origin of Trichospirura in mammals through a remote host-switching event in tupaiids in southern Asia, likely facilitated by the intermediate hosts, and for their subsequent migration to the Ethiopian and finally Neotropical Realm is proposed. Regarding the two species from anurans and saurians in the Antilles, one or two host-switching events are considered equally possible, based on morphological characters.

  19. Two New Species of Demodex (Acari: Demodecidae) with a Redescription of Demodex musculi and Data on Parasitism in Mus musculus (Rodentia: Muridae).

    Science.gov (United States)

    Izdebska, Joanna N; Rolbiecki, Leszek

    2015-07-01

    This article describes two new skin mite species found on the house mouse Mus musculus L., 1758. Demodex marculus sp. nov. is a very small demodecid mite (adult stages, on average, 99 µm in length) found in mouse skin in the abdomen, back, limbs, and anal area. It is characterized by relatively large bossing hammer-shaped supracoxal spines, embedded in the trapezoidal gnathosoma. Demodex fusiformis sp. nov., in turn, is a little larger (adult stages on average 111 µm in length), with a small oval gnathosoma equipped with fine, knob-like supracoxal spines. It was found in the skin of abdomen, back, and limbs. Moreover, Demodex musculi (Oudemans, 1897) was redescribed, which is small demodecid mite (adult stages on average 142 µm in length) and characterized by relatively large morphological variation and considerable sexual dimorphism. The characteristic feature of this species is the strongly elongated and rectangular gnathosoma equipped with very large wedge-shaped supracoxal spines. D. musculi was found in the skin of various, haired regions of the mice body (head, neck, abdomen, back, limbs, genital-anal region, and tail). Moreover, one more demodecid mite was found in the skin of the examined mice, it was Demodex flagellurus Bukva, 1985, which was found only in the genital area. Overall infection of Mus musculus L. by all species of Demodex was with the prevalence of 100%, mean intensity of 24.0, and range of intensity of 1-109. Despite high infection levels, no symptoms of parasitosis were observed in the hosts. PMID:26335466

  20. A new species of the genus Demodex Owen, 1843 (Acari: Demodecidae) from the ear canals of the house mouse Mus musculus L. (Rodentia: Muridae).

    Science.gov (United States)

    Izdebska, Joanna N; Rolbiecki, Leszek

    2015-06-01

    A new species Demodex conicus n. sp. is described based on adult and juvenile stages from the ear canals of the house mouse Mus musculus L. in Poland. The new species is most similar to D. auricularis Izdebska, Rolbiecki & Fryderyk, 2014 from the ear canals of the wood mouse Apodemus sylvaticus (L.), but differs in the following features: the gnathosoma is triangular, the supracoxal spines (setae elc.p) are conical, the spines on the terminal segment of palp are four, the striation on opisthosoma is fine but dense, the vulva is located at a distance of c.17 µm from posterior level of legs IV, and the male genital opening is located at the level of legs I. The differences also relate to body size and proportions, female D. conicus n. sp. being, on average slightly larger, and male significantly larger than D. auricularis. Males of the new species also have longer and more massive opisthosoma than males of D. auricularis. Demodex conicus n. sp. was found in 17.5% of the mice studied from different locations in Poland. PMID:25962464

  1. Activity pattern of Cuniculus paca (Rodentia: Cuniculidae in relation to lunar illumination and other abiotic variables in the southern Brazilian Amazon

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    Fernanda Michalski

    2011-12-01

    Full Text Available Understanding what influences the activity of organisms is important for both ecological understanding and species conservation. Using data from 2,707 camera trap days distributed across 24 forest sites, we present quantitative analyses of the activity pattern of Cuniculus paca (Linnaeus, 1766 in southern Amazonia. We compared the activity pattern of this species across four designated subsets of the 24-hours diel cycle (dawn, dusk, day and night. Using linear regression models we tested the influence of season, temperature and rainfall on the activity patterns of C. paca (paca. We also evaluated the nocturnal photos of paca (N = 111 as a function of the degree of lunar illumination in order to test the prediction that pacas minimize their activity during moon phase when illumination is brighter. Pacas were not recorded during the day but were active at dawn, dusk and night time. We found differences in the influence of the abiotic variables on the nocturnal activity of pacas in the study area. There was no significant difference between the observed (expressed as the frequency of total counts of independent photos over the five classes of lunar illumination and the expected activity of pacas, based on the frequency of days in the lunar cycle with different classes of lunar illumination, whereas lunar illumination had a weak negative influence on the timing of paca activity (i.e. pacas were active closer to sunset with increasing lunar illumination. However, the timing of nocturnal activity in pacas was not influenced by season, temperature or rainfall. Our findings highlight the ecological plasticity of this Neotropical rodent which has a key function in the maintenance of Neotropical forests.

  2. Extinction of endemic vertebrates on islands : The case of the giant rat Canariomys bravoi (Mammalia, Rodentia) on Tenerife (Canary Islands, Spain)

    NARCIS (Netherlands)

    Bocherens, Herve; Michaux, Jacques; Talavera, Francisco Garcia; Van der Plicht, Johannes

    2006-01-01

    Fossil bone collagen (14)C dating and delta(13)C and delta(15)N isotopic measurements of the rodent Canariomys bravoi from Tenerife (Canary Islands.. Spain) were used to test two different hypotheses about the causes of extinctions of endemic vertebrates on islands. climate versus humans. For the Te

  3. A small, new gerbil-mouse Eligmodontia (Rodentia: Cricetidae) from dunes at the coasts and deserts of north-central Chile: molecular, chromosomic, and morphological analyses.

    Science.gov (United States)

    Spotorno, Angel E; Zuleta, Carlos; Walker, Laura I; Manriquez, German; Valladares, Pablo; Marin, Juan C

    2013-01-01

    A small, new species of gerbil rodents of the genus Eligmodontia from the southwestern dunes of the Atacama Desert in northern Chile is described; the genus had not been reported for this western lowland region. Our description is based on cytogenetic and molecular data, as well as cranial and external morphology. In order to support this hypothesis, we studied 27 specimens captured in Playa Los Choros (Coquimbo) and Copiapó (Atacama), comparing them with samples of all the extant species of the genus. Nineteen individuals consistently showed 2N=50, FN=48, with telocentric chromosomes and G-bands identical to those of the geographically northeastern E. hirtipes; these two groups were geographically separated by E. puerulus (2N = 34, FN = 48). The phylogenetic analysis of 56 Eligmodontia cytochrome-b gene sequences yielded a maximum-likelihood phylogenetic tree where the new species formed a divergent and well-supported clade within the genus, which was also confirmed by unweighted parsimony, minimum evolution, and Bayesian analyses. The new species has K2P genetic distances of 12.8% from the geographically distant E. hirtipes, and 10.3% from E. puerulus. Axes 1 and 2 of Principal Component Analysis based on 12 body and skull measurements clearly separated the new species, the latter having a smaller head+body length (70.6 +/- 3.4 mm, n = 17) and lower weight (11.9 +/- 1.9 g, n = 20). We provide strong evidence to recognize a distinct new western lineage within Eligmodontia genus, Eligmodontia dunaris sp. nov., for which we give a complete taxonomic description and a hypothetical biogeographic scenario. The new species should be considered endangered, due to its level of endemism, its low population numbers (which can be occasionally increased after a blooming desert) and its fragile dry habitat patchily distributed near the Atacama Desert. PMID:25250459

  4. Thaptomys Thomas 1915 (Rodentia, Sigmodontinae, Akodontini) with karyotypes 2n = 50, FN = 48, and 2n = 52, FN = 52: two monophyletic lineages recovered by molecular phylogeny

    OpenAIRE

    Karen Ventura; Maria José de Jesus Silva; Yatiyo Yonenaga-Yassuda

    2010-01-01

    A novel karyotype with 2n = 50, FN = 48, was described for specimens of Thaptomys collected at Una, State of Bahia, Brazil, which are morphologically indistinguishable from Thaptomys nigrita, 2n = 52, FN = 52, found in other localities. It was hence proposed that the 2n = 50 karyotype could belong to a distinct species, cryptic of Thaptomys nigrita, once chromosomal rearrangements observed, along with the geographic distance, might represent a reproductive barrier between both forms. Phylogen...

  5. Ciclo Vital de Schistosoma mansoni através do Holochilus brasiliensis (Desmarest, 1818 em ambiente semi-natural (Trematoda, Shistosomatidae; Rodentia, Cricetidae

    Directory of Open Access Journals (Sweden)

    Omar dos Santos Carvalho

    1976-10-01

    Full Text Available Junto ao Lago da Pampulha, Belo Horizonte, MG, foram capturados (julho/72-novembro/73 28 exemplares de Holochilus brasiliensis, dos quais 11 (39,3% eliminavam nas fezes ovos viáveis de S. mansoni. Miracídios da cepa mencionada ("H" infectaram Biomphalaria glabrata e as cercárias obtidas também infectaram camundongos albinos, recuperando-se, ao final do experimento, 35,3% de vermes adultos. Por outro lado, cercárias de cepa humana ("LE" de S. mansoni infectaram sete exemplares de H. brasiliensis, nascidos em laboratório, recuperando-se no fim de 60 dias, 30,5% de vermes adultos. Estudos anatomapatológicos de H. brasiliensis demonstraram infecção generalizada, encontrando-se granuloma no esôfago, estômago, intestino (delgado e grosso, fígado, baço, pâncreas e linfonodos abdominais. Espessamentos fibrosos da íntima da veia porta, granulomas em espaços porta e fibrose incipiente dos espaços porta e interlobular foram lesões decorrentes da presença de ovos de S. mansoni encontrados no fígado. Em ambiente semi-natural, foi possível fechar o ciclo do S. mansoni sem direta participação humana, utilizando-se B. glabrata experimentalmente infectadas com trematódeos da cepa "LE", H. brasiliensis nascidos em laboratório e B. glabrata nascida no ambiente semi-natural estabelecido. Verificou-se que ambas as cepas ("H" e "LE" comportaram-se de maneira análoga, não sendo verificadas, também, diferenças morfológicas entre os ovos e vermes adultos de ambas. As observações, realizadas no campo e no laboratório demonstraram que o Holochilus brasiliensis é bom hospedeiro de Schistosoma mansoni. Assim, em determinadas áreas e sob certas condições ecológicas, o cricetídeo em questão poderá, efetivamente, integrar-se ao ciclo do trematódeo na natureza, independente ou paralelamente à presença do homem. Assinala-se, finalmente, que o presente trabalho relata o segundo fechamento do ciclo biológico de S. mansoni em condições ditas semi-naturais. Os primeiros estudos, entretanto, de Antunes, Milward de Andrade, Katz & Coelho4,,em 1971 e de Antunes5, em 1971 foram feitos utilizando-se o Nectomys s. squamipes.

  6. An Observation on the Reproductive Biology of Glis glis (Linnaeus, 1766 (Rodentia; Gliridae and Body Weight Gaining of Pups in the Istranca Mountains of Turkish Thrace

    Directory of Open Access Journals (Sweden)

    Beytullah Ozkan

    2006-01-01

    Full Text Available In this study, reproductive biology of Glis glis (Linnaeus, 1766 and weight gaining of pups were studied in four localities by using wooden nestboxes and tattoo pliers method in mixed deciduous forest of Istranca Mountains in Turkish Thrace. By considering morphological peculiarities, body weight gaining and reproductive signs of adults, mating behaviors and breeding times were measured from specimens captured in nestboxes. Results showed that females were mated between June 15 and August 18 and gave a birth between July 14 and September 16. The litter size ranged from 1 to 12 (Mean 6.05, n = 100 and the least weight of newborn is 2 g. Female to male ratio were in the range of 48.2 to 51.8%, respectively (n = 82. Over wintering adult yearlings reached maturity in mid June. Yearlings arising hibernation after May gained weight during September and October and they entered hibernation at the end of November. The litters at bird gained weight daily from 0.83-1.19 g and reached to 25.16-35.7 g at mean within 30 days during August and September.

  7. Plio-Pleistocene history of West African Sudanian savanna and the phylogeography of the Praomys daltoni complex (Rodentia): the environment/geography/genetic interplay

    Czech Academy of Sciences Publication Activity Database

    Bryja, Josef; Granjon, L.; Dobigny, G.; Patzenhauerová, Hana; Konečný, Adam; Duplantier, J.-M.; Gauthier, P.; Colyn, M.; Durnez, L.; Lalis, A.; Nicolas, V.

    2010-01-01

    Roč. 19, č. 21 (2010), s. 4783-4799. ISSN 0962-1083 R&D Projects: GA AV ČR IAA6093404; GA ČR GAP506/10/0983 Institutional research plan: CEZ:AV0Z60930519 Keywords : cytochrome b * microsattelites * mtDNA introgression * Quaternary * rodenta Subject RIV: EG - Zoology Impact factor: 6.457, year: 2010

  8. Karyotypes of Three Rat Species (Mammalia: Rodentia: Muridae) from Hainan Island, China, and the Valid Specific Status of Niviventer lotipes 

    OpenAIRE

    Li, Yuchun; Wu, Yi; Harada, Masashi; Lin, Liang-Kong; MOTOKAWA, Masaharu

    2008-01-01

    The karyotypes of three rat species from Hainan Island, China, were examined. Niviventer fulvescens (Gray, 1847) had 2n=46 and FN=64, similar to the karyotypes reported for N. fulvescensfrom Southeast Asia, while Niviventer lotipes (Allen, 1926) had 2n=52 and FN=66, which is distinct from the known karyotypes of other Niviventer species. Niviventer lotipes was recently considered conspecific with N. tenaster (Thomas, 1916), but the two were found to have extremely different karyotypes (2n=52 ...

  9. Cranial phenotypic variation in Meriones crassus and M. libycus (Rodentia, Gerbillinae, and a morphological divergence in M. crassus from the Iranian Plateau and Mesopotamia (Western Zagros Mountains

    Directory of Open Access Journals (Sweden)

    Fatemeh Tabatabaei Yazdi

    2014-06-01

    Full Text Available Jirds (genus Meriones are a diverse group of rodents, with a wide distribution range in Iran. Sundevall’s jird (Meriones crassus Sundevall, 1842 is one such species that shows a disjunct distribution, found on the Iranian Plateau and Western Zagros Mountains. Morphological differences observed between these two populations, however, lack quantitative support. Morphological differences between geographical populations of Meriones crassus were analysed and compared with those of the sympatric M. libycus. Similarities in the cranial morphology of these species were found, e.g. in a relatively large and inflated bulla. A two-dimensional geometric morphometric analysis was done on the skull of 275 M. crassus and 220 M. libycus from more than 70 different localities in their distribution range. Results confirm cranial differences between specimens of M. crassus from the Western Zagros and those from Africa and Arabia, mainly at the level of the relative size of the tympanic bulla, that were significantly correlated with the annual rainfall and elevation. Moreover, the study supports the hypothesis that the Western Zagros specimens are both a geographically and phenotypically distinct group compared to the other Iranian M. crassus specimens, suggesting that the former might be a distinct species.

  10. Short-term effects of avian predation variation on population size and local survival of the multimammate rat, Mastomys natalensis (Rodentia, Muridae)

    DEFF Research Database (Denmark)

    Gulck, T. van; Stocks, R.; Verhagen, Ron;

    1998-01-01

    placement of perches increased local hunting activity of at least the Black Shouldered Kite but there were no obvious effects on rodent population size or survival. In a single field where avian predation was prevented by covering the field with a net, an increase in survival was observed. The opposite was...

  11. NUEVO REGISTRO DE CHINCHILLA CHINCHILLA (RODENTIA, CHINCHILLIDAE) PARA LA REGIÓN DE ATACAMA, CHILE. IMPLICANCIAS PARA SU ESTADO DE CONSERVACIÓN

    OpenAIRE

    Pablo Valladares F.; Martín Espinosa; Mauricio Torres; Eric Diaz; Nicolai Zeller; Jorge de La Riva; Moisés Grimberg; Ángel Spotorno

    2012-01-01

    Reportamos un nuevo registro de Chinchilla chinchilla para la Región de Atacama, Chile. Se basa en ejemplares fotografiados por cámaras de movimiento en el Parque Nacional Nevado Tres Cruces y sus alrededores y por restos óseos y de fecas encontrados en laderas de cerros, ya sea con pendiente abrupta o con rodados, ambas formaciones con cuevas de mediano tamaño. No existen reportes científicos para esta especie en la Región de Atacama en los últimos cincuenta años. Se analiza el estado de con...

  12. Cadmium and lead concentrations in Skrjabinotaenia lobata (Cestoda: Catenotaeniidae) and in its host, Apodemus sylvaticus (Rodentia: Muridae) in the urban dumping site of Garraf (Spain)

    International Nuclear Information System (INIS)

    The present study evaluates the parasitological model constituted by the wood mouse (Apodemus sylvaticus) and its intestinal cestode (Skrjabinotaenia lobata) as a potential bioindicator of Cd and Pb in the urban dumping site of Garraf near the city of Barcelona (Spain) and in Begues (reference site). Tissues and respective S. lobata specimens of 38 wood mice captured in Garraf and Begues were analyzed for Cd and Pb by means of ICP-MS. Higher cadmium levels in S. lobata were found only in respect to the muscular levels of their hosts. Nevertheless, lead levels were 8.5-, 53.2- and 81.4-fold higher in S. lobata than kidney, liver and muscle levels of A. sylvaticus from Garraf, respectively. Thus, the proposed model seems to be a promising bioindicator to evaluate environmental lead exposure in terrestrial habitats. In addition, all available data on lead bioaccumulation by cestode parasites of terrestrial mammals are generally discussed. - The parasitological model S. lobata/A. sylvaticus presents suitable features to be used as a bioindicator of lead pollution in terrestrial habitats

  13. Analysis of the modern distribution of South African Gerbilliscus (Rodentia: Gerbillinae with implications for Plio-Pleistocene palaeoenvironmental reconstruction

    Directory of Open Access Journals (Sweden)

    Justin K. Williams

    2011-01-01

    Full Text Available There are four extant species of Gerbilliscus, formally classified as Tatera, native to the southern African subregion, each exhibiting varying degrees of environmental tolerance. These species are also routinely reported from many of the palaeontological and archaeological sites in the region. We used a geographic information systems analysis to examine the distribution of modern Gerbilliscus by georeferencing museum specimens. The distribution of Gerbilliscus was then compared to the latest treatment of the vegetation of South Africa, Lesotho and Swaziland in order to quantify the genus’s environmental tolerances and propose a new niche model for this taxon. Palaeoenvironmental reconstructions are made possible by defining the tolerance limits of modern taxa that have persisted relatively unchanged throughout the Plio-Pleistocene. Tolerance limits can then be applied to fossil-bearing localities where these taxa are known to have occurred in the past. Results from our analysis indicated that Gerbilliscus exhibits a wide range of environmental tolerances that must be considered when reconstructing palaeoenvironments.

  14. Note on breeding and parental care behaviours of albino Hoary-bellied Squirrel Callosciurus pygerythrus (Rodentia: Sciuridae in Sibsagar District of Assam, India

    Directory of Open Access Journals (Sweden)

    G. Kalita

    2009-06-01

    Full Text Available A few individuals of albino Horay-bellied Squirrels along with normal gray individuals of Callosciurus pygerythrus have been observed in Sibsagar district of Assam, India. One albino female was studied in captivity. This paper presents our observations on the breeding behaviour and the parental care exhibited by the albino squirrel in captivity. The squirrel bred twice in captivity with a normal male of the same species. In both the periods, a single male baby with normal coat colour developed. Oral dose of vitamin E has been found helpful in the breeding of the studied squirrel species. The mother squirrel exhibited parental care by carrying her baby using her mouth, to a safer place during danger. However, the observed phenomenon is unlike that of the cat species. Some of the habitat ecology and feeding habits of the albino squirrels have also been studied, both in natural and in captive conditions.

  15. Estudio preliminar del esqueleto postcraneal del Muscardinus cyclopeus Agustí, Moyà-Solà & Pons-Moyà, 1982 (Mammalia, Rodentia, Myoxidae

    Directory of Open Access Journals (Sweden)

    Quintana Cardona, J.

    2015-06-01

    Full Text Available For the first time, the partial skeleton of the Pliocene Muscardinus cyclopeus is described from Punta Nati-3, located in the northwest of the municipality of Ciutadella de Menorca (Balearic Islands, western Mediterranean. Based on bone parameters it is shown that the size of Muscardinus cyclopeus is on overage 69% higher than that of Muscardinus avellanarius. The main features that distinguish M. cyclopeus from M. avellanarius are, among others: the relatively wider diameter of the proximal epiphysis of the ulna; the relatively shorter olecranon; the less marked concavity in the fovea of the proximal epiphysis of the radius; the relatively shorter ilium; the more symmetrical epicondyles of the distal femoral epiphysis; the relatively higher lateral epicondyle dorsoventrally, with a very flat ventral surface; and the relatively narrower tibia transversely. As a species evolved in an insular context, it is still very difficult to discern which of these characters are primitive and which are derived.Se describe, por primera vez, parte del esqueleto del muscardino gigante del Plioceno de Menorca, procedente del yacimiento 3 de Punta Nati, situado al noroeste del término municipal de Ciutadella de Menorca (Islas Baleares, Mediterráneo occidental. A partir de los parámetros óseos se ha podido constatar que Muscardinus cyclopeus muestra, de media, un tamaño un 69% superior al de Muscardinus avellanarius (Linnaeus, 1758. Entre las principales características óseas que diferencian M. cyclopeus de M. avellanarius cabe destacar, entre otras, el diámetro proporcionalmente más ancho de la epífisis proximal de la ulna, el olecranon proporcionalmente más corto, la fóvea de la epífisis proximal del radio con una concavidad menos marcada, el ilium proporcionalmente más corto, los epicóndilos de la epífisis distal del fémur más simétricos, el epicóndilo lateral proporcionalmente más alto en sentido dorso-ventral, con la superficie ventral muy aplanada y la tibia proporcionalmente más estrecha en sentido transversal. Al tratarse de una especie evolucionada en un contexto insular, resulta difícil dilucidar cuales son caracteres primitivos y caracteres derivados.

  16. Relantionship between vestibular lamina, dental lamina, and the developing oral vestibule in the upper jaw of the field vole (Microtus agrestis, Rodentia)

    Czech Academy of Sciences Publication Activity Database

    Witter, K.; Pavlíková, H.; Matulová, Petra; Míšek, Ivan

    2005-01-01

    Roč. 265, - (2005), s. 264-270. ISSN 0362-2525 R&D Projects: GA ČR GA304/02/0448; GA MŠk OC B23.001 Institutional research plan: CEZ:AV0Z50450515 Keywords : mouth * dentition * tooth Subject RIV: EB - Genetics ; Molecular Biology Impact factor: 1.421, year: 2005

  17. Ciclo Vital de Schistosoma mansoni através do Holochilus brasiliensis (Desmarest, 1818 em ambiente semi-natural (Trematoda, Shistosomatidae; Rodentia, Cricetidae

    Directory of Open Access Journals (Sweden)

    Omar dos Santos Carvalho

    1976-10-01

    Full Text Available Junto ao Lago da Pampulha, Belo Horizonte, MG, foram capturados (julho/72-novembro/73 28 exemplares de Holochilus brasiliensis, dos quais 11 (39,3% eliminavam nas fezes ovos viáveis de S. mansoni. Miracídios da cepa mencionada ("H" infectaram Biomphalaria glabrata e as cercárias obtidas também infectaram camundongos albinos, recuperando-se, ao final do experimento, 35,3% de vermes adultos. Por outro lado, cercárias de cepa humana ("LE" de S. mansoni infectaram sete exemplares de H. brasiliensis, nascidos em laboratório, recuperando-se no fim de 60 dias, 30,5% de vermes adultos. Estudos anatomapatológicos de H. brasiliensis demonstraram infecção generalizada, encontrando-se granuloma no esôfago, estômago, intestino (delgado e grosso, fígado, baço, pâncreas e linfonodos abdominais. Espessamentos fibrosos da íntima da veia porta, granulomas em espaços porta e fibrose incipiente dos espaços porta e interlobular foram lesões decorrentes da presença de ovos de S. mansoni encontrados no fígado. Em ambiente semi-natural, foi possível fechar o ciclo do S. mansoni sem direta participação humana, utilizando-se B. glabrata experimentalmente infectadas com trematódeos da cepa "LE", H. brasiliensis nascidos em laboratório e B. glabrata nascida no ambiente semi-natural estabelecido. Verificou-se que ambas as cepas ("H" e "LE" comportaram-se de maneira análoga, não sendo verificadas, também, diferenças morfológicas entre os ovos e vermes adultos de ambas. As observações, realizadas no campo e no laboratório demonstraram que o Holochilus brasiliensis é bom hospedeiro de Schistosoma mansoni. Assim, em determinadas áreas e sob certas condições ecológicas, o cricetídeo em questão poderá, efetivamente, integrar-se ao ciclo do trematódeo na natureza, independente ou paralelamente à presença do homem. Assinala-se, finalmente, que o presente trabalho relata o segundo fechamento do ciclo biológico de S. mansoni em condições ditas semi-naturais. Os primeiros estudos, entretanto, de Antunes, Milward de Andrade, Katz & Coelho4,,em 1971 e de Antunes5, em 1971 foram feitos utilizando-se o Nectomys s. squamipes.Close to the Pampulha Lake, Belo Horizonte, MG (Brazil, there were collected (july/72 -November/73 28 specimens of Holochilus brasiliensis, 11 of them (39.3% eliminating S. mansoni viable eggs in their faeces. Miracidia from the strain above ("H" could infected Biomphalaria glabrata, the cercariae shed later being also able to infect albino mice, from whose faeces 35,3% of adult worms were recovered in the end of the experiment. S. mansoni cercariae from human strain ("LE" infected 7 H. brasiliensis laboratory specimens, and 30,5% of adult worms could be recovered in the end of 60 days. Anatomopathological studies of H. brasiliensis demonstrated generalized infection, granulomes being detected in the esophagus, stomach, intestines (small and large, tiver, spleen, pancreas and abdominal lymphnodes. Fibrous thickenning of the portal vein intima, granulomes in portal spaces an incipient fibrosis of portal and interlobular spaces were the lesion triggered by the presence of S. mansoni eggs in the liver. In semi-natural surroundings (Fig. 1, the life cycle of S. mansoni could be completed, with no human interference, by using B. glabrata experimentally infected with trematodes from "LE" strain, laboratory-bred H. brasiliensis and B. glabrata specimens from hat seminatural surroundings. It was observed that both strains ("H" and "LE" displayed similar behaviour, no morphological differences having been detected between their eggs and adult worms. Field and laboratory studies demonstrated Holochilus brasiliensis to be a satisfactory intermediate host of S. mansoni. It is than possible that, under certains ecological conditions, the cricetids under study may eventually be integrated in the trematode natural cycle, independently from or parallely the presence of man. It must finally be pointed out that the present paper reports the second case of lifecycle completion under semi-natural conditions. The former studies4,5, however, were conducted on Nectomys s. squamipes.

  18. Aspectos ecológicos del roedor arborícola rhipidomys latimanus tomes, 1860, (rodentia: cricetidae) en el oriente de cundinamarca, colombia

    OpenAIRE

    Montenegro Díaz, Olga; López Arévalo, Hugo; Cadena, Alberto

    2012-01-01

    Se estudiaron aspectos demográficos de Rhipidomys latimanus de febrero a agosto de 1989, utilizando la técnica de captura-recaptura en una cuadrícula de 1.2 Ha. con vegetación de Bosque altoandino y páramo a una altura superior a los 3.000 msnm en el oriente de Cundinamarca, Colombia. La densidad poblacional se incrementó en los meses de mayor precipitación y la supervivencia se mantuvo entre moderada y alta. La actividad reproductiva fue constante en esta época del año, El área de acción pro...

  19. Third lineage of rodent eimerians: morphology, phylogeny and re-description of Eimeria myoxi (Apicomplexa: Eimeriidae) from Eliomys quercinus (Rodentia: Gliridae)

    Czech Academy of Sciences Publication Activity Database

    Kvičerová, Jana; Mikeš, V.; Hypša, Václav

    2011-01-01

    Roč. 138, č. 10 (2011), s. 1217-1223. ISSN 0031-1820 R&D Projects: GA ČR GD206/09/H026 Grant ostatní: GA ČR(CZ) GA206/08/1019; GA AV ČR(CZ) KJB601410816 Institutional research plan: CEZ:AV0Z60220518 Keywords : coccidia * Eimeriidae * Rodents * garden dormouse * 18S rDNA * ORF 470 * oocyst morphology * oocyst residuum * phylogenetic analysis Subject RIV: EB - Genetics ; Molecular Biology Impact factor: 2.961, year: 2011

  20. [Testosterone and Induced Humoral Immunity in Male Campbell Dwarf Hamsters (Phodopus campbelli, Thomas, 1905, Rodentia, Cricetidae): Experimental Manipulation of Testosterone Levels].

    Science.gov (United States)

    Vasilieva, N Yu; Khrushchova, A M; Shekarova, N; Rogovin, K A

    2015-01-01

    In this paper we report the results of testosterone manipulation in the blood of male Campbell dwarf hamsters Phodopus campbelli Thomas, 1905 through castration, followed by testosterone treatment. Under these conditions, we studied antibody production rates in response to injection with sheep red blood cells (SRBC). It was shown that castration induced a dramatic decrease in blood testosterone but had no effect on the humoral response to SRBC. Males that received a testosterone compound with a long-lasting action (omnadren) exhibited a poor response to SRBC following re-exposure in the context of elevated testosterone compared to castrated males inoculated with an oil base of the drug. PMID:26349233

  1. Biblioteca universitaria, CRAI y alfabetización informacional / Maria Pinto Molina, Dora Sales y P. Martínez Osorio : Reseña bibliográfica

    OpenAIRE

    Gómez Hernández, José Antonio

    2008-01-01

    Obras como la de Pinto, Sales y Osorio ayudan a consolidar el rol bibliotecario de apoyo al aprendizaje permanente a través de la competencia informacional. A través de ello, además, las bibliotecas refuerzan su utilidad social y académica, y se legiti-man por su capacidad de cambio y adapta-ción a las demandas de la sociedad y las personas. De modo que sólo cabe felicitar-se de su aparición, y desear que su lectura anime todavía más a adoptar la alfabetiza-ción continua como una práctica pro...

  2. El Triásico de la región Nuevalos-Cubel (Zaragoza). Sedimentación en un sector del borde de cuenca del surco Molina-Valencia.

    OpenAIRE

    García Royo, J.F.C.; Arche, Alfredo

    1987-01-01

    El Triásico de la región Nuévalos-Cubel (Zaragoza) se depositó en el flanco SO del Umbral de Ateca, límite de la Cuenca Ibérica durante la mayor parte de este período. La sedimentación, controlada por falías de dirección NO-SE, comenzó al O por abanicos aluviales retrogradantes, seguidos de ríos meandriformes, diversos complejos costeros siliciclásticos y al comienzo de la sedimentación de las facies Muschelkalk> el Umbral queda totalmente cubierto por sedimentos. Se hace...

  3. El Triásico de la región Nuévalos - Cubel (Zaragoza). Sedimentación en un sector de cuenca del surco Molina-Valencia.

    OpenAIRE

    Arche, A.; García-Royo, J. F. C.

    1987-01-01

    [ES] El Triásico de la región Nuévalos-Cubel (Zaragoza) se depositó en el flanco SO del Umbral de Ateca, límite de la Cuenca Ibérica durante la mayor parte de este período. La sedimentación, controlada por falías de dirección NO-SE, comenzó al O por abanicos aluviales retrogradantes, seguidos de ríos meandriformes, diversos complejos costeros siliciclásticos y al comienzo de la sedimentación de las facies Muschelkalk> el Umbral queda totalmente cubierto por sedimentos. Se ...

  4. Nobel Prize in Chemistry 1995 "for their work in atmospheric chemistry, particularly concerning the formation and decomposition of ozone" : Paul J Crutzen, Mario J Molina and F Sherwood Rowland

    CERN Multimedia

    1997-01-01

    Prof. Paul J Crutzen presents "The stratospheric ozone hole : a man-caused chemical instability".The discovery of the spring time stratospheric ozone hole by scientists of the British Antarctic Survey, led by Joe Farman, was one of the greatest surprises in the history of the atmospheric sciences and global change studies. After intensive research efforts by many international scientific teams it has clearly been demonstrated that the observed rapid ozone depletions are due to catalytic reactions involving CIO radicals, more than 80571130f which are produced by the photochemical breakdown of the industrial chlorofluorocarbon (CFC) gases. In this lecture I will present the course of events leading to the rapid ozone depletions. International agreements have been reached to forbid the production of the CFC gases. However, despite these measures, it will take almost 50 years before the ozone hole will have disappeared. I will also show that mankind has indeed been very lucky and that things could have been far w...

  5. José Luis Gutiérrez Molina, El Estado frente a la Anarquía. Los grandes procesos contra el anarquismo español (1883-1982)

    OpenAIRE

    Tavera, Susanna

    2010-01-01

    La confluencia entre conmemoraciones históricas e iniciativas editoriales que viene caracterizando nuestro mercado cultural hacía presagiar la aparición de buen número de títulos que, coincidiendo con el centenario de la Semana Trágica de 1909, se centraran en el estudio de esta revuelta popular. A la hora de la verdad no han sido más que dos los libros publicados ex-novo (los de Dolors Marín y Francisco Bergasa), otras dos las rediciones (de los textos clásicos ya de Josep Benet y Joan Conne...

  6. Toward the characteristics of the development of the seedlings and immature plants of Araucaria araucana (Molina K. Koch (Araucariaceae in its natural habitats (Neuquén Province, Argentina

    Directory of Open Access Journals (Sweden)

    N.L. Kazakova

    2014-04-01

    Full Text Available Araucaria forests were studied and their types were distinguished. Descriptive characteristics of defined forest types were established. Araucaria araucana regrowth rate and seed survival expressed as thousands per hectare were estimated in the natural habitats of araucaria. The anatomical features of needles of immature and generative plants were compared. A. araucana life cycle from the seedling to the immature developmental stage was described. Growth power classes of immature plants were defined according to the environmental conditions of A. araucana growth.

  7. New records and description of the microstructural patterns of guard hair in Conepatus chinga (Molina, 1782 (Carnivora, Skunk for the states of Paraná and Santa Catarina, southern Brazil

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    Sérgio Bazilio

    2015-02-01

    Full Text Available This article aims to show new records of Conepatus chinga for the states of Paraná and Santa Catarina, in southern Brazil, contributing to increase knowledge on its distribution, besides describing the microstructural patterns of its guard hair. Three run-over specimens were found in highway BR-280, two of them in the town of Palmas, in Paraná, and one in the town of Abelardo Luz, in Santa Catarina. For describing the cuticular and medullary pattern of guard hairs, sixty slides were made. Conepatus chinga has a cross-sectional and undulated cuticular pattern and an anisocytic medullary pattern. The description of microstructural patterns of C. chinga makes it easier to conduct studies related to its ecology, increasing the chances to identify hairs found in fecal samples from carnivores in mastofauna studies.

  8. Endoparasitos em cobaias (Cavia porcellus (Mammalia, Rodentia, Caviidae provenientes de biotérios de criação e experimentação do município do Rio de Janeiro, Brasil Endoparasites in guinea pigs (Cavia porcellus (Mammalia, Rodentia, Caviidae from breeding and experimentation animal housing of the municipality of Rio de Janeiro, Brazil

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    Luciana Casartelli Alves

    2007-10-01

    Full Text Available Foi realizado um levantamento sobre a prevalência e intensidade de infecção de endoparasitos em cobaias convencionais de linhagem Short Hair provenientes de biotérios de criação (A e experimentação (B do município do Rio de Janeiro, Brasil, avaliando-se a eficácia das medidas de prevenção entre eles. Para a realização do estudo, utilizou-se exame direto de mucosa e do conteúdo intestinal, a técnica de tricromo de WHEATLEY e exames coproparasitológicos pelas técnicas de Ritchie e Kinyoun. Os parasitos encontrados através da técnica de exame direto da mucosa e do conteúdo intestinal e de tricromo de WHEATLEY com as respectivas prevalências foram: Balantidium sp. (78%, Cyathodinium sp. (68%, Eimeria caviae (38%, Paraspidodera uncinata (34% e Giardia muris (24%. Nos exames de fezes realizados pelas técnicas de Ritchie e Kinyoun, foram encontrados os seguintes parasitos com as respectivas prevalências no biotério A: E. caviae (74%, Balantidium sp. (68%, Cyathodinium sp. (68% e Cryptosporidium sp. (5%. No biotério B, observou-se: E. caviae (58%, Balantidium sp. (42%, Cyathodinium sp. (25% e G. muris (8%. A alta prevalência de endoparasitos nos biotérios sugere a necessidade de se rever a eficácia das barreiras sanitárias adotadas.This paper discusses the prevalence and intensity of infection of endoparasites in conventionally maintained Short Hair guinea pigs colonies from a breeding (A and an experimental (B facilities in Rio de Janeiro, Brazil. It also evaluates the efficacy of the methods of prevention adopted by both facilities. The search of parasites was performed by direct examination of intestinal mucosa and its contents, WHEATLEY's trichrome method and coproparasitological examinations by Ritchie's and Kinyoun's techniques. The prevalences of endoparasites found throught direct examination of intestinal mucosa and its contents were: Balantidium sp. (78%, Cyathodinium sp. (68%, Eimeria caviae (38%, Paraspidodera uncinata (34% and Giardia muris (24%. The prevalences of endoparasites found throught Ritchie's and Kinyoun's techniques in facility A were: E. caviae (74%, Balantidium sp. (68%, Cyathodinium sp. (68% and Cryptosporidium sp. (5%. In facility B: E. caviae (58%, Balantidium sp. (42%, Cyathodinium sp. (25% and G. muris (8% were found. The high prevalences in both facilities suggest that the efficacy of the sanitary barriers adopted in the prevention of parasitic infections should be revised.

  9. Estrutura da comunidade de pequenos mamíferos (Mammalia, Rodentia da Estação Ecológica de Águas Emendadas, Planaltina, Distrito Federal, Brasil Community structure of small mammals (Mammalia, Rodentia from Estação Ecológica de Águas Emendadas, Planaltina, Distrito Federal, Brazil

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    Raquel Ribeiro

    2005-12-01

    Full Text Available Foram investigadas, no presente estudo a composição de espécies e a abundância de uma comunidade de pequenos mamíferos presentes nos campos de murundus, um tipo fitofisionômico característico da região central dos Cerrados brasileiros. Duas grades de armadilhas do tipo Sherman foram montadas e oito espécies de roedores foram capturadas. Não foi registrada a presença de nenhum marsupial na região. As espécies mais abundantes foram Bolomys lasiurus (Lund, 1841, Thalpomys lasiotis Thomas, 1916 e Calomys tener (Winge, 1888. Durante a estação chuvosa, B. lasiurus foi a espécie mais abundante, ao contrário de T. lasiotis que apresentou maior número de indivíduos durante o período seco. Esta distinção com relação à abundância dos indivíduos dessas duas espécies pode ser um mecanismo de adaptação que permite a coexistência nos mesmos habitats.In the present study we investigated the species composition and abundance of a small mammal community from a "campo de murundus", a characteristic vegetational type of Central Brazilian Cerrados. Two grids of Sherman traps were set and eight species of rodents was recorded. No marsupials were found in this habitat. The most abundant species were Bolomys lasiurus (Lund, 1841, Thalpomys lasiotis Thomas, 1916 and Calomys tener (Winge, 1888. Bolomys lasiurus was the most abundant species during the rainy season and T. lasiotis was more common in dry season. This may be a mechanism allowing their coexistence in the same habitats.

  10. Intraspecific differences in metabolic rate of Chroeomys olivaceus (Rodentia: Muridae: the effect of thermal acclimation in arid and mesic habitats Diferencias intraespecíficas en la tasa metabólica de Chroeomys olivaceus (Rodentia: Muridae: efecto de la aclimatación térmica en hábitat áridos y mésicos

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    F. Fernando Novoa

    2005-06-01

    Full Text Available Studies of metabolic capacities in rodents have been largely studied at an inter-specific levels, but physiological capacities of populations belonging to the same species have received lesser attention. Here we studied the maximum and basal metabolic rates of two populations of the rodent Chroeomys olivaceus dwelling in habitats with contrasting temperature and rainfall regimes, and to test if differences in metabolic capacities are due to local adaptation or acclimatization effect. After four weeks of acclimation to 25 ºC and 10 ºC, the BMR and MMR were determined in individuals from the northern population of Caleta Loa, and the southern population of La Picada. Individuals from ‘La Picada’ population were heavier than those from Caleta Loa. MMR and BMR exhibited higher values in cold acclimated animals compared with warm-acclimated animals. Besides, BMR, but not MMR, was lower in Caleta Loa individuals, in spite of the acclimation treatment. Hence, the differences in the metabolic capacities and the response to acclimation of C. olivaceus populations appear to be an evolutionary response to the environmental cuesLas capacidades metabólicas en roedores han sido ampliamente estudiadas en un nivel ínterespecífico, pero los atributos fisiológicos de las poblaciones que pertenecen a una misma especie, han recibido menos atención. Aquí estudiamos las tasas metabólicas máximas y basales de dos poblaciones del roedor Chroeomys olivaceus que viven en habitats con temperaturas y regímenes de precipitaciones contrastantes y se analiza si las diferencias en las capacidades metabólicas se deben a diferenciación local o a efectos de aclimatación. Después de cuatro semanas de aclimatación a 25 ºC y 10 ºC, el BMR y MMR fueron determinados en individuos de la población norteña de Caleta Loa y en la población sureña de "La Picada". Los individuos de la población "La Picada" presentaron mayor masa corporal que los de Caleta Loa. Los valores de MMR y BMR fueron más altos en animales aclimatados al frío, comparados con los aclimatados a temperaturas más cálidas. Asimismo, sólo BMR y no MMR, fue más bajo en los individuos de Caleta Loa, a pesar del tratamiento de aclimatación. Por lo tanto, las diferencias en las capacidades metabólicas y en la respuesta a la aclimatación de las poblaciones de C. olivaceus, parecen ser una respuesta evolutiva a las claves ambientales

  11. Identificación de los mecanismos subyacentes a la invasión de Castor canadensis (Rodentia) en el archipiélago de Tierra del Fuego, Chile Identifying the mechanisms underlying the invasion of Castor canadensis (Rodentia) into Tierra del Fuego archipelago, Chile

    OpenAIRE

    PETRA K WALLEM; Jones, Clive G; Marquet, Pablo A.; Fabián M. Jaksic

    2007-01-01

    Castor canadensis es considerado un ingeniero ecosistémico arquetípico, ya que altera el estado de factores bióticos y abióticos, mediante interacciones no tróficas, modificando sustancialmente los ecosistemas que habita. Esta especie fue introducida en la Isla Grande de Tierra del Fuego en 1946 por el gobierno argentino, con el fin de estimular la industria peletera. Actualmente se encuentra presente en las principales islas del archipiélago, incluyendo Tierra del Fuego, Navarino, Dawson y H...

  12. Infección inducida en el roedor selvático Dasyprocta leporina (Rodentia: Dasyproctidae, con huevos larvados de Lagochilascaris minor (Nematoda: Ascarididae Induced infection in the wild rodent Dasyprocta leporina (Rodentia: Dasyproctidae with larval eggs of Lagochilascaris minor (Nematoda: Ascarididae

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    S. Gregorio

    1990-12-01

    Full Text Available Ejemplares de Dasyprocta leporina Linnaeus, 1758 fueron criados alejados de su ambiente natural. A los 3 ó 4 meses de edad, se los inoculó por vía oral con huevos de Lagochilascaris minor Leiper, 1909 obtenidos de una paciente nativa. Los huevos se los incubó por más de 80 dias, para que de ellos fuese posible obtener por compresión mecánica, larvas que se mantuviesen vivas en medio acuoso por 48 horas o más. Sacrificados los animales a los 14 ó 46 dias posteriores a la infección, se hallaron en los músculos esqueléticos larvas ovilladas dentro de nódulos inflamatorios, los cuales no presentaban reacción a cuerpo extraño, abscedación o calcificación. El desarollo de los nódulos no parecía afectar la normalidad de los hospedadores. Las larvas obtenidas eran similares a las descritas por SPRENT como de tercer estadio para estos helmintos. Ratones blancos infectados con material similar, no presentaron nódulos en sus músculos ni se pudo recuperar de sus tejidos larva alguna. Por los hallazgos obtenidos con la infección de estos animales, se postula que el helminto no posee ciclo pulmonar y que su desarrollo requiere de un hospedador intermediario.Specimens of Dasyprocta leporina (Linnaeus, 1758 were raised out their natural environment. At three to four months of age they were orally inoculated with Lagochilascaris minor (Leiper, 1909 eggs obtained from a native patient. The eggs were incubated for more than 80 days so that it was possible to obtain, by mechanical compression, larvae that could be maintained alive in liquid medium for 48 hours or more. The animals were sacrificed 14-46 days after infection and tangled larva in inflammatory nodules were found in skeletal muscle without foreign body reaction, abscess formation or calcification. The development of the nodules did not seem to affect the hosts. The larvae obtained were similar to those described by SPRENT as the third stage of these helminths. When white mice were inoculated with similar material it was not possible to recuperate larva from their tissues nor were nodules found. Based on these results it is postulated that the helminth does not present a pulmonary cycle and that its development requires an intermediary host.

  13. 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

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    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

  14. Ectoparásitos Asociados a Machos y Hembras de Oxymycterus rufus (Rodentia: Muridae: Estudio comparativo en la Selva Marginal del río de La Plata, Argentina Ectoparasites Associated with Males and Females of Oxymycterus rufus (Rodentia: Muridae: Comparative Study in La Plata River Marshland, Argentina

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    Marcela Lareschi

    2004-12-01

    Full Text Available El objetivo del presente estudio es comparar parámetros e índices de infestación de los ectoparásitos asociados a cada sexo de Oxymycterus rufus (Fischer. El índice de densidad relativa de los machos fue 4,4% y el de las hembras 5,0%. Se recolectaron 873 ectoparásitos de 38 machos y 1015 de 43 hembras. La riqueza y la diversidad específica de los ectoparásitos fueron 12,0 y 1,2 en los machos, 11,0 y 0,7 en las hembras. La similitud entre machos y hembras de acuerdo a sus ectoparásitos fue del 87%. Los resultados obtenidos muestran que el sexo del huésped influenciaría la prevalencia y abundancia media de aquellas especies ectoparásitas que en estudios previos mostraron preferencia por O. rufus, tales como Androlaelaps fahrenholzi (Berlese (abundancia media = 3,5 y prevalencia = 65,8% en los machos; abundancia media = 1,6 y prevalencia = 50,0% en las hembras, Eutrombicula alfreddugesi (Oudemans (abundancia media = 10,9 y prevalencia = 29,0% en los machos; abundancia media = 18,7 y prevalencia = 32,6% en los machos y Ornithonyssus bacoti (Hirst (abundancia media = 7,8 y prevalencia = 63,0% en los machos; abundancia media = 2,7 y prevalencia = 52,6% en las hembras. Esta información es importante desde un punto de vista epidemiológico.Infestation parameters and indexes of ectoparasites associated with each sex of Oxymycterus rufus (Fischer are compared. Males relative density index = 4.4%, females RDI = 5.0%. A total of 873 ectoparasites were collected on 38 males, and 1015 on 43 females; specific richness = 12.0, specific diversity = 1.2 on males, and S = 11.0 H = 0.7 on females. The similarity between both sexes according to their ectoparasites was of 87.0%. The results obtained show that host sex may influence on the prevalence and mean abundance of those ectoparasites which in previous studies have showed preference for O. rufus, such as Androlaelaps fahrenholzi (Berlese (mean abundance = 3.5 and prevalence = 65.8% in males; mean abundance = 1.6 and prevalence = 50.0% in females, Eutrombicula alfreddugesi (Oudemans (mean abundance = 10.9 and prevalence = 29.0% in males; mean abundance = 18.7 and prevalence = 32.6% in females and Ornithonyssus bacoti (Hirst (mean abundance = 7.8 and prevalence = 63.0% in males; mean abundance = 2.7 and prevalence = 52.6% in females. This information is important since an epidemiological viewpoint.

  15. Ectoparásitos Asociados a Machos y Hembras de Oxymycterus rufus (Rodentia: Muridae): Estudio comparativo en la Selva Marginal del río de La Plata, Argentina Ectoparasites Associated with Males and Females of Oxymycterus rufus (Rodentia: Muridae): Comparative Study in La Plata River Marshland, Argentina

    OpenAIRE

    Marcela Lareschi

    2004-01-01

    El objetivo del presente estudio es comparar parámetros e índices de infestación de los ectoparásitos asociados a cada sexo de Oxymycterus rufus (Fischer). El índice de densidad relativa de los machos fue 4,4% y el de las hembras 5,0%. Se recolectaron 873 ectoparásitos de 38 machos y 1015 de 43 hembras. La riqueza y la diversidad específica de los ectoparásitos fueron 12,0 y 1,2 en los machos, 11,0 y 0,7 en las hembras. La similitud entre machos y hembras de acuerdo a sus ectoparásitos fue de...

  16. Method of releasing and number of animals are determinants for the success of European ground squirrel (Spermophilus citellus) reintroductions

    Czech Academy of Sciences Publication Activity Database

    Matějů, J.; Říčanová, Štěpánka; Poláková, S.; Ambros, M.; Kala, B.; Matějů, K.; Kratochvíl, L.

    2012-01-01

    Roč. 58, č. 2 (2012), s. 473-482. ISSN 1612-4642 Institutional support: RVO:68081766 Keywords : Translocation * Endangered species * Rodentia Subject RIV: EH - Ecology, Behaviour Impact factor: 1.355, year: 2012

  17. Pathogenic Hantaviruses, Northeastern Argentina and Eastern Paraguay

    OpenAIRE

    Padula, Paula; Martinez, Valeria P.; Bellomo, Carla; Maidana, Silvina; San Juan, Jorge; Tagliaferri, Paulina; Bargardi, Severino; Vazquez, Cynthia; Colucci, Norma; Estévez, Julio; Almiron, María

    2007-01-01

    We describe the first, to our knowledge, cases of hantavirus pulmonary syndrome in northeastern Argentina and eastern Paraguay. Andes and Juquitiba (JUQ) viruses were characterized. JUQV was also confirmed in 5 Oligoryzomys nigripes reservoir species from Misiones. A novel Akodon-borne genetic hantavirus lineage was detected in 1 rodent from the Biologic Reserve of Limoy.

  18. Ameroséidos asociados a nidos de Neotoma mexicana Baird, 1855 (Rodentia: Muridae) y descripción de una nueva especie del género Sertitympanum Elsen y Whithaker, 1985

    OpenAIRE

    Gabriel Alberto Villegas Guzman; Griselda Montiel Parra; Margarita Vargas; Polaco, Oscar J.

    2004-01-01

    Se registra por vez primera la presencia de tres ameroseídos, Kleemannia plumigera, Ameroseius sp. y Sertitympanum sp. nov. habitando en un nido de Neotoma mexicana colectado en el estado de Durango, México.Se describe la distribución de los ácaros en los componentes que forman la estructura del nido. Asimismo, sedescribe la especie nueva del género Sertitympanum.

  19. Endogenous development, pathogenicity and host specificity of Eimeria cahirinensis Couch, Blaustein, Duszynski, Shenbrot and Nevo, 1997 (Apicomplexa: Eimeriidae) from Acomys dimidiatus (Cretzschmar 1826) (Rodentia: Muridae) from the Near East

    Czech Academy of Sciences Publication Activity Database

    Kvičerová, Jana; Ptáčková, P.; Modrý, David

    2007-01-01

    Roč. 100, č. 2 (2007), s. 219-226. ISSN 0932-0113 R&D Projects: GA ČR GA524/03/1548 Institutional research plan: CEZ:AV0Z60220518 Keywords : Eimeria cahirinensis * Acomys * Near East Subject RIV: EG - Zoology Impact factor: 1.512, year: 2007

  20. Presencia de Hydrochoerus hydrochaeris (Hydrochoeridae, Rodentia, Mammalia en la cuenca del río Carcarañá, Santa Fe, Argentina: Comentarios acerca de su conservación y biogeografía en Argentina

    Directory of Open Access Journals (Sweden)

    Pablo G. Rimoldi

    2014-01-01

    Full Text Available El carpincho (Hydrochoerus hydrochaeris es el roedor actual más grande del mundo y uno de los mamíferos típico de las Provincias Fitogeográficas Pampeana y del Espinal, habitando todo el sector Este de las mismas. Estas regiones han sido categorizadas por la World Wildlife Foundation (WWF como áreas "en peligro crítico/ amenazada", y se les asigna el nivel de máxima prioridad de conservación como consecuencia de la destrucción de hábitat, la sobreexplotación, la contaminación y la introducción de especies exóticas. El carpincho presenta una preferencia marcada por los ambientes con abundancia de cuerpos de agua donde la vegetación palustre le proporciona alimento y refugio. De esta forma, tanto los cuerpos de agua como la vegetación asociada es determinante para la prevalescencia de poblaciones de carpinchos en un ambiente determinado. Para la provincia de Santa Fe los registros no son muy abundantes, registrándose hasta la actualidad unos 33 puntos de colecta/observación, la gran mayoría ubicados en el centro y norte de la provincia. El objetivo de la presente contribución es presentar nuevos registros de presencia de Hydrochoerus hydrochaeris en la cuenca del río Carcarañá (sur de la provincia de Santa Fe, y su asociación con algunas variables climático-ambientales y evaluar la distribución de esta especie. Finalmente, se discute la posible expansión o migración de este especie hacia el oeste de esta provincia y de la provincia de Buenos Aires.

  1. First genotoxicity study of Paraná river water from Argentina using cells from the clam Corbicula fluminea (Veneroida Corbiculidae and Chinese hamster (Cricetulus griseus Rodentia, Cricetidae K1 cells in the comet assay

    Directory of Open Access Journals (Sweden)

    Jacqueline D. Caffetti

    2008-01-01

    Full Text Available High concentrations of xenobiotics from urban and industrial wastes have contributed to the contamination of many aquatic environments. We used the comet assay to evaluate the genotoxic potential of water collected from the River Paraná, which receives a great deal of waste, at three points (Puerto Piray, Eldorado and Montecarlo in the Misiones Province of Argentina. The in vivo comet assay used 40 freshwater clams (Corbicula fluminea while the in vitro comet assay used Chinese hamster (Cricetulus griseus K1 cell (CHO-K1 cultures with the mutagen ethyl methanesulfonate (EMS as the positive control and phosphate buffered saline (PBS as the negative control. Both assays showed statistically significant differences between the three sampling sites in relation to the negative control, the results of this preliminary study indicating that at these three sites water from the Paraná River presents genotoxic potential.

  2. First genotoxicity study of Paraná river water from Argentina using cells from the clam Corbicula fluminea (Veneroida Corbiculidae) and Chinese hamster (Cricetulus griseus Rodentia, Cricetidae) K1 cells in the comet assay

    OpenAIRE

    Jacqueline D. Caffetti; Mário S. Mantovani; María C. Pastori; Alberto S. Fenocchio

    2008-01-01

    High concentrations of xenobiotics from urban and industrial wastes have contributed to the contamination of many aquatic environments. We used the comet assay to evaluate the genotoxic potential of water collected from the River Paraná, which receives a great deal of waste, at three points (Puerto Piray, Eldorado and Montecarlo) in the Misiones Province of Argentina. The in vivo comet assay used 40 freshwater clams (Corbicula fluminea) while the in vitro comet assay used Chinese hamster (Cri...

  3. MAMÍFEROS PEQUEÑOS EN LA DIETA DE LA LECHUZA TYTO ALBA (STRIGIFORMES: TYTONIDAE EN DOS LOCALIDADES DEL OCCIDENTE DE ECUADOR, CON AMPLIACIÓN DISTRIBUCIONAL DE ICHTHYOMYS HYDROBATES (RODENTIA: CRICETIDAE

    Directory of Open Access Journals (Sweden)

    JORGE BRITO M.

    2015-01-01

    Full Text Available En el presente estudio a partir de 107 egagrópilas de la lechuza, determinamos el consumo de 300 presas agrupadas en 21 especies, las egagrópilas fueron colectadas en dos localidades de diferente ambiente Los Santiagos y La Ciénaga, en las provincias de Chimborazo y Manabí, al occidente de Ecuador. Nuestros análisis revelaron una dieta compuesta mayoritariamente de mamíferos pequeños, sobre todo roedores, quienes constituyeron el 80%. Entre las presas más abundantes se encontró a Oligoryzomys sp. que representó el 38.7% de la dieta en las muestras de Los Santiagos y Sigmodon peruanus 33.6% en La Ciénaga, siendo el 22,5% y 41% respectivamente de la biomasa total consumida para cada sitio. La rata cangrejera Ichthyomys hydrobates es reportada por primera vez en la dieta de la lechuza y también en la localidad de Los Santiagos, ampliando el rango distribucional de este roedor para el centro-sur al occidente de Ecuador en aproximadamente 200 km.

  4. Mitochondrial DNA diversity and population structure of a forest-dependent rodent, Praomys taitae (Rodentia: Muridae) Heller 1911, in the fragmented forest patches of Taita Hills, Kenya

    DEFF Research Database (Denmark)

    Nyakaana, S.; Tumusiime, C.; Oguge, N.; Siegismund, Hans Redlef; Arctander, Peter; Muwanika, V.

    The population genetic structure of the forest-dependent rodent, Praomys taitae, sampled from nine indigenous forest fragments sampled from nine indigenous forest fragments distributed over three ranges of the Taita Hills in Kenya, was determined using mitochondrial DNA (mtDNA) control region...... sequence mismatch distributions revealed that all the populations were in mutation-drift disequilibrium except the populations of the Kyulu and Ronge forest fragments....

  5. 新疆准噶尔盆地北缘中中新世早期的原圆齿鼠(Promylagaulinae,Mylagaulidae)%Mylagaulids (Mammalia: Rodentia) from the early Middle Miocene of northern Junggar Basin

    Institute of Scientific and Technical Information of China (English)

    吴文裕; 倪喜军; 叶捷; 孟津; 毕顺东

    2013-01-01

    Application of CT (computed tomography) scanning technology to the study of tooth morphology of mylagaulids makes better understanding the tooth structure of high-crowned mylagaulids. Two genera and species from the early Middle Miocene Halamagai Formation innorthern Junggar Basin of Xinjiang are recognized: Tschalimys ckhikvadzei Shevyreva, 1971,the senior synonym of Sinomylagaulus halamagaiensis Wu, 1988 and Simpligaulus yangi gen.et sp. nov. Both taxa undoubtedly belong to the subfamily Promylagaulinae. The integrated lithological, paleontological and paleomagnetic studies on sediments of the Late Oligocene through Late Miocene in the northern Junggar Basin of Xinjiang demonstrate that Halamagai Formation is fluvial-lacustrine sediments formed during the time coincident to the Mid-Miocene Climatic Optimum. T. ckhikvadzei and S. yangi probably inhabit the humid and warm regions with forests and densely vegetated thickets as the living mountain beaver Aplodontia rufa does. Thesemylagaulids are probably immigrants or the descendants of the immigrants from west North America.

  6. The gastrointestinal helminths of Rattus niobe (Rodentia: Muridae) with descriptions of two new genera and three new species (Nematoda) from Papua New Guinea and Papua Indonesia.

    Science.gov (United States)

    Smales, L R

    2016-01-01

    Cestodes, to be identified elsewhere, the acanthocephalan Moniliformis moniliformis and 15 species of nematode including 2 new genera, a new species and 2 putative new species from the families Heligmonellidae and Oxyuridae, as well as juveniles and a putative heligmonellid that could not be fully identified, were collected from the digestive tracts of 34 Rattus niobe (Muridae: Murinae: Rattini) from Papua, Indonesia and Papua New Guinea. The ascaridid, Toxocara mackerrasae, the chabertiid Cyclodontostomum purvisi, the heterakid Heterakis sp., the spirurids Protospirura kaindiensis and P. muricola the subulurid Subulura andersoni and the trichurids Eucoleus sp. and Trichuris muris have been reported previously from endemic Rattus spp. Syphacia (Syphacia) niobe n. sp. was distinguished from its congeners by a combination of characters including a round cephalic plate, the lack of cervical and lateral alae, a longer male tail and an attenuated female tail. Nugininema titokis n. gen., n. sp. differs from all other genera in the Heligmonellidae in the characters of the synlophe, 10-17 ridges orientated subfrontally at mid body and 2 right ventral ridges hypertrophied anteriorly. Rodentanema aenigma n. gen., n. sp. differs from all other genera in the Heligmonellidae in the characters of the synlophe 6-7 ridges at mid body not symmetrical in relation to frontal axis. Species richness of the nematode assemblage was similar to that reported for Rattus leucopus in Papua New Guinea, with about 90% of possible species found as indicated by bootstrap analysis. Species composition included 6 species unique to R. niobe and 7 species reported from at least one other species of Rattus indigenous to New Guinea, as well as juvenile worms, probably ascaridids. PMID:27395168

  7. Presencia de Hydrochoerus hydrochaeris (Hydrochoeridae, Rodentia, Mammalia) en la cuenca del río Carcarañá, Santa Fe, Argentina: Comentarios acerca de su conservación y biogeografía en Argentina

    OpenAIRE

    2014-01-01

    El carpincho (Hydrochoerus hydrochaeris) es el roedor actual más grande del mundo y uno de los mamíferos típico de las Provincias Fitogeográficas Pampeana y del Espinal, habitando todo el sector Este de las mismas. Estas regiones han sido categorizadas por la World Wildlife Foundation (WWF) como áreas "en peligro crítico/ amenazada", y se les asigna el nivel de máxima prioridad de conservación como consecuencia de la destrucción de hábitat, la sobreexplotación, la contaminación y la introducc...

  8. Identidade, riqueza e abundãncia de pequenos mamíferos (Rodentia e Didelphimorphia) de área de Floresta com Araucária no estado do Paraná, Brasil

    OpenAIRE

    Guilherme Grazzini; Cássio Marcelo Mochi-Junio; Heloisa de Oliveira; Jaqueline dos Santos Pontes; Fernanda Gatto-Almeida; Liliani Marilia Tiepolo

    2015-01-01

    Roedores e Marsupiais são componentes importantes da fauna na região Neotropical. Estudos sobre a riqueza e abundância destes animais são raros na Floresta Ombrófila Mista (FOM) e aqui apresentamos um inventário conduzido na Floresta Nacional de Piraí do Sul. Esta área possui uma área aproximada de 150 ha, cercada por pastos e plantações de Pinus. A amostragem foi feita através de armadilhas de queda, Sherman e Tomahawk, dispostas nos principais tipos de vegetação encontrados. Pelo menos um c...

  9. Experimental evidence and ecological perspectives for the adaptation of Schistosoma mansoni Sambon, 1907 (Digenea: Schistosomatidae to a wild host, the water-rat, Nectomys squamipes Brants, 1827 (Rodentia: Sigmodontinae

    Directory of Open Access Journals (Sweden)

    Paulo Sérgio D'Andrea

    2002-10-01

    Full Text Available Due to the semi aquatic habits and the overlap of the geographical distribution of the water-rat, Nectomys spp., with schistosomiasis endemic areas, these wild rodents are very likely to acquire Schistosoma mansoni infection in their daily activities. The role of the water-rat in the S. mansoni cycle would be substantiated if one could prove that these rodents acquire the parasite during their own activity time, a completely independent time schedule of human activities. To pursue this goal, we performed two field experiments in the municipality of Sumidouro, State of Rio de Janeiro, Brazil, a schistosomiasis endemic area where N. squamipes is found naturally infected. One experiment was devised as a series of observations of activity time of the water-rat. The other experiment was a test of the occurrence of late transmission of S. mansoni to the water-rat. The daily activity pattern showed that the water-rat is active chiefly just after sunset. At both diurnal and late exposition essays the water-rat sentinels got infected by S. mansoni. These findings clarify ecological and behavioral components necessary to the adaptation of S. mansoni to the water-rat as a non human definitive host and the existence of a transmission cycle involving this animals as a reservoir.

  10. Trichostrongylina (Nematoda, Heligmosomoidea coparasites in Dasyprocta fuliginosa Wagler (Rodentia, Dasyproctidae from Brazil, with the re-establishment of the genus Avellaria Freitas & Lent and the description of two new species Trichostrongylina (Nematoda, Heligmosomoidea co-parasitos em Dasyprocta fuliginosa Wagler (Rodentia, Dasyproctidae do Brasil, com o restabelecimento do gênero Avellaria Freitas & Lent e a descrição de duas novas espécies

    Directory of Open Access Journals (Sweden)

    Marie C. Durette-Desset

    2006-06-01

    Full Text Available Two new tichostrongylid nematodes of the family Viannaiidae Durette-Desset & Chabaud, 1981 coparasites in Dasyprocta fuliginosa Wagler, 1832 from the State of Amazonas, Brazil, are described: Viannella trichospicula sp. nov. is differentiated from the other species of the genus by the extreme slenderness of its spicules. Avellaria intermedia sp. nov. is distinguished from the single type species Avellaria avellari Freitas & Lent, 1934, by a smaller number of cuticular ridges (17 versus 27, a higher ratio of spicule length/ body length (8% versus 5.6% and spicules with a single tip. This genus, synonymized with the genus Viannella Travassos, 1918, by Durette-Desset (1968 is re-established, the female being didelphic. It is the first record of a nematode of the family Viannaiidae in a host of the family Dasyproctidae Bonaparte, 1838.Dois novos nematóides tricostrongilídeos da família Viannaiidae Durette-Desset & Chabaud, 1981 co-parasitos em um espécime de Dasyprocta fuliginosa Wagler, 1832 do Estado do Amazonas, Brasil, são descritos: Viannella trichospicula sp. nov. distingue-se das espécies do gênero, pelos espículos extremamente delgados. Avellaria intermedia sp. nov. diferencia-se da espécie tipo e única do gênero Avellaria avellari Freitas & Lent, 1934, pelo menor número de arestas cuticulares (17 comparado a 27, pela maior relação entre o tamanho do espículo e o comprimento do corpo (8% comparado a 5,6% e espículos com extremidade única. Este gênero, que havia sido considerado sinônimo de Viannella Travassos, 1918, por Durette-Desset (1968, é restabelecido; as fêmeas são didelfas. Este é o primeiro registro de um nematóide da família Viannaiidae em um hospedeiro da família Dasyproctidae Bonaparte, 1838.

  11. Differences in richness and composition of gastrointestinal parasites of small rodents (Cricetidae, Rodentia) in a continental and insular area of the Atlantic Forest in Santa Catarina state, Brazil Diferenças na composição e na riqueza de parasitas gastrointestinais de pequenos roedores (Cricetidae, Rodentia) em uma área continental e uma insular de Floresta Atlântica em Santa Catarina, Brasil

    OpenAIRE

    VV. Kuhnen; ME. Graipel; CJC. Pinto

    2012-01-01

    The first and only study on gastrointestinal parasites of wild rodents in the Island of Santa Catarina was done in 1987. The aim of this study was to identify intestinal parasites from wild rodents in Santo Amaro da Imperatriz and Santa Catariana Island, and to compare the richness and composition of the gastrointestinal parasite community of both areas. Rodents were captured with live traps, and feces were screened using the sedimentation method and optical microscopy. The following species ...

  12. Lisa maailmakirjanduse tõlkevaramule

    Index Scriptorium Estoniae

    2006-01-01

    Uued teosed sarjast "Maailmakirjanduse tõlkevaramu": Tirso de Molina "Sevilla pilkaja ja kivist külaline" ja Pedro Calderon de la Barca "Suur Maailmateater" (Tartu : Tartu Ülikooli Kirjastus, 2006)

  13. Plaadid / Margus Kiis

    Index Scriptorium Estoniae

    Kiis, Margus

    2004-01-01

    Uutest plaatidest Courtney Love "American Sweetheart", Haltya "Electric Help Elves", Beats and Styles "This Is... Beats and Styles", "Ennio Morricone Remixes vol. 2", Delta Goodrem "Innocent Eyes", Juana Molina "Segundo"

  14. 75 FR 8945 - Granting of Request for Early Termination of the Waiting Period Under the Premerger Notification...

    Science.gov (United States)

    2010-02-26

    ... Sentillion, Inc. G Sentillion, Inc. 20100294 G George J. Pedersen. G Michael Gualario. G Sensor Technologies.... 20100362 G Molina Healthcare, Inc. G Unisys Corporation. G Unisys Corporation. 20100363 G...

  15. Fauna helmintológica peruana: Paryphostomum huaccaci sp. n. (Echinostomotidoe parásito de Cathartes aura jota Molino, 1782

    Directory of Open Access Journals (Sweden)

    Nicanor Ibáñez H.

    2014-06-01

    Full Text Available Es motivo de la presente nota, contribuir al conocimiento de un trematodo: Paryphostomum huaccaci sp. n. perteneciente o la Familia Echinostomatidae Poche, 1926 y que parásita a Cathartes aura jota Molina, 1782.

  16. Varela-Mato, V.; Cancela, J.M.; Ayan, C.; Molina, A.; Martín, V. Lifestyle and Health among Spanish University Students: Differences by Gender and Academic Discipline. Int. J. Environ. Res. Public Health 2012, 9, 2728–2741

    Directory of Open Access Journals (Sweden)

    Vicente Martín

    2013-08-01

    Full Text Available The authors wish to make the following correction to this paper [1]. In the article it is mentioned that “the study obtained the approval of the university’s Students Vice-Chancellery and the government bodies of the involved academic centers and also by the Ethics Committee of the University of Vigo.” However, it should read: “The study obtained the approval of the university’s Students Vice-Chancellery and the government bodies of the involved academic centers” only.

  17. Small mammal community structure and microhabitat use in the austral boundary of the Atlantic Forest, Brazil

    OpenAIRE

    Daniela O. de Lima; Bethânia O. Azambuja; Vagner L. Camilotti; Nilton C. Cáceres

    2010-01-01

    We investigated the richness, composition, and species relative abundance of a terrestrial small mammal community in a Deciduous Forest area in the austral boundary of the Atlantic Forest. The microhabitat use of the most common species was also investigated. Six rodents - Akodon montensis (Thomas, 1913), Oligoryzomys nigripes (Olfers, 1818), Sooretamys angouya (Thomas, 1913), Thaptomys nigrita (Lichtenstein, 1829), Mus musculus (Linnaeus, 1758) and Juliomys sp. - and one marsupial - Didelphi...

  18. The influence of fire and livestock grazing on the assemblage of non-flying small mammals in grassland-Araucaria Forest ecotones, southern Brazil

    Directory of Open Access Journals (Sweden)

    Ezequiel Pedó

    2010-08-01

    Full Text Available Grazing and fire, used in pasture regeneration practices, are inter-related activities in livestock management. Both activities affect habitat characteristics by changing the structure of the herbaceous and shrubby vegetation, reducing their biomass and litter cover. This study evaluated the effect of fire and livestock grazing on the assemblage of non-flying small mammals in grassland-Araucaria forest ecotones in southern Brazil. We compared four areas frequently affected by livestock management with four protected areas. Surveys were carried out in four sampling periods, one in each season of 2004. We captured a total of 325 individuals from 12 species of rodents - Akodon montensis Thomas, 1913, Akodon paranaensis Christoff, Fagundes, Sbalqueiro, Mattevi e Yonenaga-Yassuda, 2000, Akodon sp. 1, Akodon sp. 2 (2n = 34, Brucepattersonius iheringi (Thomas, 1896, Delomys dorsalis (Hensel, 1872, Oligoryzomys flavescens (Waterhouse, 1837, Oligoryzomys nigripes (Olfers, 1818, Oxymycterus nasutus (Waterhouse, 1837, Scapteromys sp. (2n = 34, Sooretamys angouya (Fischer, 1814 and Thaptomys nigrita (Lichtenstein, 1829 - and two species of marsupials - Monodelphis dimidiata (Wagner, 1847 and Philander frenatus (Olfers, 1818 -, in a total effective effort of 5254 traps.day-1. The abundance, biomass and diversity of non-flying small mammals were significantly higher in the protected areas than in those affected by fire and livestock grazing. Species strictly associated with grassland habitats were not found in the impacted area. These results indicate that the presence of herds of domestic ungulates negatively affect the assemblage of non-flying small mammals in grassland and Araucaria forest areas in southern Brazil.

  19. ARTHROPODS AND HELMINTHS ASSEMBLAGE IN SIGMODONTINE RODENTS FROM WETLANDS OF THE RIO DE LA PLATA, ARGENTINA

    OpenAIRE

    Graciela T Navone; Juliana Notarnicola; Santiago Nava; M. del Rosario Robles; Carlos Galliari; Marcela Lareschi

    2009-01-01

    The assemblage of arthropods and helminths, present in sigmodontine rodents (Cricetidae) from a broad wetland area of the Río de la Plata, Argentina, was studied. A total of 250 sigmodontines were captured during a two-year sampling period: Scapteromys aquaticus and Oxymycterus rufus were the most abundant hosts, followed by Oligoryzomys nigripes, Akodon azarae, Oligoryzomys flavescens, and Deltamys kempi. There were 33102 parasites collected, corresponding with Rhopalopsyllidae fleas (Siphon...

  20. Isolation and characterization of microsatellites in Rattus rattus

    Czech Academy of Sciences Publication Activity Database

    Loiseau, A.; Rahelinirina, S.; Rahalison, L.; Konečný, Adam; Duplantier, J.-M.; Brouat, C.

    2008-01-01

    Roč. 8, č. 4 (2008), s. 916-918. ISSN 1755-098X R&D Projects: GA AV ČR IAA6093404 Institutional research plan: CEZ:AV0Z60930519 Keywords : genetic diversity * microsatellite * Rattus rattus * Rodentia Subject RIV: EB - Genetics ; Molecular Biology

  1. Phylogenetic analyses of complete mitochondrial genome sequences suggest a basal divergence of the enigmatic rodent Anomalurus

    Directory of Open Access Journals (Sweden)

    Gissi Carmela

    2007-02-01

    Full Text Available Abstract Background Phylogenetic relationships between Lagomorpha, Rodentia and Primates and their allies (Euarchontoglires have long been debated. While it is now generally agreed that Rodentia constitutes a monophyletic sister-group of Lagomorpha and that this clade (Glires is sister to Primates and Dermoptera, higher-level relationships within Rodentia remain contentious. Results We have sequenced and performed extensive evolutionary analyses on the mitochondrial genome of the scaly-tailed flying squirrel Anomalurus sp., an enigmatic rodent whose phylogenetic affinities have been obscure and extensively debated. Our phylogenetic analyses of the coding regions of available complete mitochondrial genome sequences from Euarchontoglires suggest that Anomalurus is a sister taxon to the Hystricognathi, and that this clade represents the most basal divergence among sampled Rodentia. Bayesian dating methods incorporating a relaxed molecular clock provide divergence-time estimates which are consistently in agreement with the fossil record and which indicate a rapid radiation within Glires around 60 million years ago. Conclusion Taken together, the data presented provide a working hypothesis as to the phylogenetic placement of Anomalurus, underline the utility of mitochondrial sequences in the resolution of even relatively deep divergences and go some way to explaining the difficulty of conclusively resolving higher-level relationships within Glires with available data and methodologies.

  2. Revised occurrence of rodents from the tribe Praomyini (Muridae) in Zambia based on mitochondrial DNA analyses: implications for biogeography and conservation

    Czech Academy of Sciences Publication Activity Database

    Bryja, Josef; Mazoch, V.; Patzenhauerová, Hana; Mateke, C.; Zima Jr., J.; Šklíba, J.; Šumbera, R.

    2012-01-01

    Roč. 61, 3-4 (2012), s. 268-283. ISSN 0139-7893 R&D Projects: GA ČR GAP506/10/0983 Institutional support: RVO:68081766 Keywords : zoogeography * faunistics * mtDNA * Murinae * phylogeny * Rodentia * DNA barcoding Subject RIV: EG - Zoology Impact factor: 0.494, year: 2012

  3. Distribution of the common hamster in the Czech Republic after 2000: retreating to optimum lowland habitats

    Czech Academy of Sciences Publication Activity Database

    Tkadlec, Emil; Heroldová, Marta; Víšková, V.; Bednář, M.; Zejda, Jan

    2012-01-01

    Roč. 61, 3-4 (2012), s. 246-253. ISSN 0139-7893 R&D Projects: GA MZe QH72075 Institutional support: RVO:68081766 Keywords : Cricetus cricetus * questionnaire * Rodentia Subject RIV: EG - Zoology Impact factor: 0.494, year: 2012

  4. ANALYSES OF IMAGES OF LAGENARIA (LAGENARIA SICERARIA (MOLINA STANDL. IN PAINTING AS A SOURCE OF INFORMATION FOR THE HISTORY OF INTRODUCTION AND CROP ARCHEOGENETIC Анализ изображения лагенарии (Lagenaria siceraria (molina standl. в живописи как источник информации для истории интродукции и археогенетики культуры

    Directory of Open Access Journals (Sweden)

    Tsatsenko L. V.

    2013-03-01

    Full Text Available Works of painters of past is the source of information of crop domestication, use in horticultural, species diversity. Lagenaria crop images in painting can also be a resource for determining the morphological changes of the crop in evolution

  5. Thematic Categorization and Analysis of Peer Reviewed Articles in the LISA Database, 2004-2005. A Review of: Gonzalez-Alcaide, Gregorio, Lourdes Castello-Cogolles, Carolina Navarro-Molina, et al. “Library and Information Science Research Areas: Analysis of Journal Articles in LISA.” Journal of the American Society for Information Science and Technology 59.1 (2008: 150-4.

    Directory of Open Access Journals (Sweden)

    Carol Perryman

    2009-03-01

    Full Text Available Objective – To provide an updated categorization of Library and Information Science (LIS publications and to identify trends in LIS research.Design – Bibliometric study.Setting – The Library and Information Science Abstracts (LISA database via the CSA Illumina interface.Subjects – 11,273 item records published from 2004-2005 and indexed in LISA.Methods – First, a search was set up to retrieve all records from 2004-2005, limited to peer review items (called “arbitrated works” by the authors (150 and excluding book reviews. Second, thematic descriptor terms used for the records were identified. Frequency counts for descriptor term occurrence were compiled using Microsoft Access and Pajek software programs. From the results of this search, the top terms were analyzed using the Kamada-Kawai algorithm in order to eliminate descriptor term co-occurrence frequencies under 30. A cluster analysis was used to depict thematic foci for the remaining records, providing a co-word network that visually identified topic areas of most frequent publication. Conclusions were drawn from these findings, and recommendations for further research were provided.Main Results – The authors identified 18 “thematic research core fields” (152 clustered around three large categories, “World Wide Web”, “Education”, and “Libraries”, plus 12 additional peripheral categories, and provided a schematic of field interrelationships.Conclusion – Domains of greatest focus for research “continue to be of practical and applied nature,” (153 but include increased emphasis on the World Wide Web and communications technologies, as well as on user studies. A table of the most frequently occurring areas of research along with their top three descriptor terms is provided (Table1, 152 (e.g., “World Wide Web” as the top area of research, with “online information retrieval” (268 occurrences, “searching” (132 occurrences, and “web sites” (115 occurrences.

  6. Measurements of absolute absorption cross sections of ozone in the 185- to 254-nm wavelength region and the temperature dependence

    Science.gov (United States)

    Yoshino, K.; Esmond, J. R.; Freeman, D. E.; Parkinson, W. H.

    1993-01-01

    Laboratory measurements of the relative absorption cross sections of ozone at temperatures 195, 228, and 295 K have been made throughout the 185 to 254 nm wavelength region. The absolute absorption cross sections at the same temperatures have been measured at several discrete wavelengths in the 185 to 250 nm region. The absolute cross sections of ozone have been used to put the relative cross sections on a firm absolute basis throughout the 185 to 255 nm region. These recalibrated cross sections are slightly lower than those of Molina and Molina (1986), but the differences are within a few percent and would not be significant in atmospheric applications.

  7. Valores hematológicos de capivaras (Hydrochoerus hydrochaeris Rodentia:Hydrochoeridae de vida livre na região de Campinas-SP Capybara's (Hydrochoerus hydrochaeris hematological values free ranging life from Campinas regions, São Paulo state, Brazil

    Directory of Open Access Journals (Sweden)

    Daniela Alves Madella

    2006-08-01

    Full Text Available O objetivo deste estudo foi determinar os valores hematológicos de 14 capivaras de vida livre capturadas nos municípios de Campinas, Monte Alegre do Sul e de São João da Boa Vista. Para a obtenção das amostras de sangue, os animais foram anestesiados via intramuscular, mediante associação de cloridrato de xilazina 2% e cloridrato de ketamina 1%, em doses de 4,5mg/kg/pv e 5,0mg/kg/pv, respectivamente. O sangue foi coletado em tubos contendo EDTA. Para a determinação dos números de eritrócitos e leucócitos, foi utilizada a metodologia tradicional da câmara de Neubauer. O hematócrito foi determinado pelo método de microhematócrito e a hemoglobina pelo método da cianometahemoglobina. Para a contagem diferencial de leucócitos, foi utilizada a técnica de Shilling. Os índices hematimétricos (VCM, HCM E CHCM foram determinados com os valores encontrados na série vermelha. Os resultados da série eritrocitária foram: 4,5 x10(6/miL ± 0,2; hemoglobina: 13.5g/dL ± 0,7; hematócrito: 40,4% ± 2; VCM: 90,2 fL ± 0,9; HCM: 30,1 pg ± 0,7; CHCM: 33,3g/dL ± 1. Na série leucocitária: 5,3 x10³/miL ± 2; bastonetes: 1 % ± 2,1; segmentados: 36,6 % ± 19,9; eosinófilos: 3,5 % ± 11,7; basófilos: 0%; linfócitos: 58,8 % ± 19,6; monócitos: 1,5% ± 2,1. Não foram encontrados os mielócitos e metamielócitos.The purpose of this study was to determine the hematological values of fourteen free life capybaras captured in three cities of São Paulo State, Brazil (Campinas, Monte Alegre do Sul and São João da Boa Vista. Blood samples were obtained with the animals anesthetized through association of 2% xilazine chloridrate and 1% ketamine chloridrate, in the doses of 4.5mg/kg/pv and 5.0mg/kg/pv respectively. The blood was collected using tubes containing EDTA. To determine the number of erythrocytes and leukocytes was used the traditional methodology of the Neubauer chamber. The hematocrit was determined by the microhematocrit method and the hemoglobin by the cianometahemoglobin. For leukocyte differential count the Shilling's method was used. The hematimetric (MCV, MCH and MCHC indexes were determined with the values found in the red serie. The results were: erythrocytes: 4.5 x10(6/mul ± 0.2; hemoglobin: 13.5g/dl ± 0.7; hematocrit: 40.4% ± 2; MCV: 90.2fl ± 0.9; MCH: 30.1pg ± 0.7; MCHC: 33.3g/dl ± 1. In the leukocytes series: 5.3 x10³/mul ± 2; band neutrophil:1 % ± 2.1; segmenter: 36.6 %± 19.9; eosinophils: 3.5% ± 11.7; basophiles: 0%; lymphocytes: 58.8% ± 19.6; monocytes: 1.5% ± 2.1. Myelocytes and metamyelocytes were not found.

  8. Avaliação de possível interferência do tabagismo na ovoposição de larvas de Calliphoridae (Díptera) em carcaça de Mus musculus L. (Rodentia: Muriade) em São Paulo, SP

    OpenAIRE

    Thais Souza Guerra; Anderson Sena Barnabe; Renato Nogueira Ferraz; Mirian P. Godoy

    2016-01-01

    A estimativa do intervalo post-mortem (IPM) é uma das principais utilizações de insetos na perícia, que pode ser fundamentado no ciclo biológico, ecologia e distribuição geográfica de uma determinada espécie, bem como o comportamento de toda fauna presente em um corpo a fim de estimar o menor intervalo possível da ocorrência da morte. Diversos fatores podem interferir no ciclo de vida de um inseto, tais como temperatura, umidade e presença de substâncias nos tecidos de uma carcaça, promovendo...

  9. Mites (Acari: Laelapidae associated with sigmodontinae rodents in Entre Ríos Province, Argentina

    Directory of Open Access Journals (Sweden)

    Abba Agustín M

    2001-01-01

    Full Text Available The richness, diversity, abundance and prevalence of mite species associated with sigmodontine rodents of different species in Entre Ríos province, Argentina are studied. Five of the six species of mites were reported for the first time in the study area. The richness and diversity of mites was higher on Oligoryzomys flavescens and O. delticola than on Akodon azarae. Androlaelaps rotundus was dominant and exhibited higher values of mean abundance and prevalence on A. azarae, Mysolaelaps microspinosus on O. flavescens and Gigantolaelaps mattogrossensis on O. delticola.

  10. Agua malgastada y agua utilizada: observaciones sobre la modernización del regadío en el Oasis de Kuqar (Xinjiang, República Popular China)

    OpenAIRE

    Faggi, Pierpaolo

    1993-01-01

    Texto traducido por Gloria Navarro Albaladejo y revisado por Juan Antonio Marco Molina Esta investigación ha sido financiada al 60% por el Ministerio Universitario de Investigación Científica y Técnica y por el Centro Nacional de Investigación de Italia

  11. El aumento del sodio intracelular inducido por la eliminación de calcio externo regula la movilidad del espermatozoide humano /

    OpenAIRE

    Torres Flores, Víctor Manuel

    2011-01-01

     tesis que para obtener el grado de Doctor en Ciencias Biológicas, presenta Víctor Manuel Torres Flores ; asesor Alberto Darszon Israel, Luis Manuel Montaño Ramírez, Juan Arcadio Molina Guarneros. 79 páginas : ilustraciones. Doctorado en Ciencias Biológicas UNAM, Facultad de Ciencias, 2011

  12. Commensal Bacteria Control Cancer Response to Therapy by Modulating the Tumor Microenvironment | Poster

    Science.gov (United States)

    Noriho Iida, Amiran Dzutsev, C. Andrew Stewart, Loretta Smith, Nicolas Bouladoux, Rebecca A. Weingarten, Daniel A. Molina, Rosalba Salcedo, Timothy Back, Sarah Cramer, Ren-Ming Dai, Hiu Kiu, Marco Cardone, Shruti Naik, Anil K. Patri, Ena Wang, Francesco M. Marincola, Karen M. Frank, Yasmine Belkaid, Giorgio Trinchieri, Romina S. Goldszmid Science 342(6161):967-970, 2013

  13. Robin Hoodist Oidipuseni / Pille-Riin Purje

    Index Scriptorium Estoniae

    Purje, Pille-Riin, 1963-

    1996-01-01

    'Ugala' külalisetendused Tallinnas: David Neilsoni 'Robin Hood' (lav. Peeter Tammearu); Mihhail Bulgakovi 'Poolearuline Jourdain' (lav. Üllar Saaremäe); Tirso de Molina 'Kadunud sõrmus' (lav. Andres Noormets); Talvo Pabuti 'Oidipuse kompleks' (lav. Andres Lepik); Anton Tshehhovi 'Kirsiaed' (lav. Kaarin Raid)

  14. Historien er ikke slut

    DEFF Research Database (Denmark)

    Thurah, Thomas

    , Seamus Heaney, Stefan Heym, Peer Hultberg, Per Højholt, Imre Kertész, Jan Kjærstad, Ivan Klíma, Jaan Kross, Siegfried Lenz, Claudio Magris, Antonio Muñoz Molina, Cees Nooteboom, Ljudmila Petrusjevskaja, Christoph Ransmayr, Klaus Rifbjerg, Salman Rushdie, José Saramago, Peter Seeberg, Tage Skou...

  15. Nobel prize awarded to pioneers in ozone research

    Energy Technology Data Exchange (ETDEWEB)

    NONE

    1996-12-31

    This article details the achievements of the three individuals who shared the 1995 Nobel Prize in Chemistry - Paul Crutzen, Mario Molina, and F. Sherwood Rowland - for their work in atmospheric chemistry, particularly the chemical processes that deplete the ozone layer. Background information about the ozone layer is presented as well as highlights of the ozone research done by the prize winners.

  16. Influencia de la despolarización atrial en la velocidad de conduccion y refractariedad en la unión atrioventricular /

    OpenAIRE

    Molina Fernández de Lara, Luis Gerardo

    2012-01-01

     tesis que para obtener el grado de Doctorado en Ciencias Medicas, presenta Luis Gerardo Molina Fernández de Lara ; asesor Ruy Pérez Tamayo, David Kershenobich Stalnikowitz, Juan Garduño Espinosa75 páginas : ilustracionesDoctorado en Ciencias Medicas UNAM, Facultad de Medicina, 2012

  17. Fisica y vida cotidiana

    CERN Multimedia

    Méndez, R

    2002-01-01

    "Estaba harto de escuchar lo dificil que es ensenar fisica, interesar a los alumnos en gases, tiros parabolicos y campos magneticos. Por eso el profesor de Fisica de la Universidad de Murcia Rafael Garcia Molina decidio hace cinco anos dejar sin argumentos a sus colegas. Comenzo la busqueda de juguetes, regalos y objetos cotidianos para explicar la fisica" (1 page).

  18. Libros

    OpenAIRE

    Alternativas. Cuadernos de Trabajo Social

    1995-01-01

    Contiene: Título: Las enseñanzas de Trabajo Social en España: 1932-1983. Estudio socio-educativo. Autora: Mª Victoria Molina Sánchez. Edita: Universidad Pontificia de Comillas. Madrid / por Mª Carmen Santos Aguado.

  19. A bi-weekly actual evapotranspiration dataset derived from NOAA-AVHRR images across the Iberian Peninsula and the Balearic islands, 1981-2015

    DEFF Research Database (Denmark)

    Vicente-Serrano, Sergio M.; Martin-Hernandez, Natalia; Tomas-Burguera, Miquel;

    -series. For an accurate quantification of daily ETa, cloud cover was removed applying the algorithm developed by Azorin-Molina et al. (2013), and the evaporative fraction estimated by means of the “triangle method”, using the spatial relationship between Ts and albedo for each daily image. The daily time...

  20. Sefarad

    DEFF Research Database (Denmark)

    Paulsen, Lasse-Emil

    2014-01-01

    is at stake is really a change of form in the memory debate. Drawing on theories from Astrid Erll (2011) and Michael Rothberg (2009), the article aims to show how the novel Sefarad by the Spanish author Antonio Muñoz Molina could be read as a literary manifestation of a multidirectional memory, in which...

  1. "The great night of Europe is shot through with long, sinister trains"

    DEFF Research Database (Denmark)

    Paulsen, Lasse-Emil

    2015-01-01

    of the millennium such a notion is constantly being challenged by global and transnational influences that affect and reshape the local memory discourse(s). The following article aims to show how the novel Sepharad by the Spanish author Antonio Muñoz Molina could be read as a literary manifestation...

  2. Programa de educación emocional y gestión del estrés en la Escuela Universitaria de Trabajo Social de Santiago de Compostela

    OpenAIRE

    Rodríguez Piñeiro, Alba

    2013-01-01

    Màster en Educació Emocional i Benestar, Facultat de Pedagogia, Departament de Mètodes d’Investigació i Diagnòstic en Educació, Universitat de Barcelona, curs: 2012-2013, Tutor/Tutora: Mª Cruz Molina Garuz

  3. Ord der forandrer

    DEFF Research Database (Denmark)

    rolle som kritisk og historisk bevidsthed. Værker af så forskellige forfattere som Durif, Tabucchi, Houellebecq, Molinas, Mertens og Antunes tager Sartres grundlæggende spørgsmål om litteraturens samfundsmæssige funktion op igen og bliver analyseret i antologien, der tager forholdet mellem litteratur og...

  4. Good for management, not for conservation: an overview of research, conservation and management of Italian small mammals

    OpenAIRE

    Bertolino, Sandro; Colangelo, Paolo; Mori, Emiliano; Capizzi, Dario

    2015-01-01

    Small mammals (Rodentia, Soricomorpha and Erinaceomorpha) play a crucial ecological role for their distribution and importance in food chains, as well as for being considered environmental bioindicators. Thus, they represent excellent models for understanding the evolutionary processes of ecosystems, population dynamics under changing environmental conditions, and habitat vulnerabilities. However, some rodents may help the spread of human diseases and are responsible for impacts on agricultur...

  5. Detection of leptospira and chlamydia in rodents in China / y Szeto Chun Wai

    OpenAIRE

    Szeto, Chun-wai; 司徒俊偉

    2015-01-01

    Rodentia is the most diversified order of mammals which are natural reservoirs for bacterial pathogens such as Leptospira, Rickettsia akari, Bartonella, Chlamydiales etc. It is also the important source of transmission of leptospirosis to human. However, only a few epidemiological studies had been done for leptospiral and chlamydial infections in rodents in Hong Kong. In this study, molecular epidemiological studies had been performed to investigate the prevalence of leptospiral and chlamydia...

  6. Ejemplares tipo de mamíferos en colecciones cubanas

    OpenAIRE

    Ramos García, Ignacio; Borroto Páez, Rafael

    2000-01-01

    Se brinda información sobre los ejemplares tipo (50 holotipos y sus paratipos) de mamíferos (Xenarthra, Insectivora, Chiroptera, Primates, Carnivora, Sirenia y Rodentia) depositados en siete colecciones cubanas. En las fichas de los holotipos se incluye la información de la descripción original y además se hacen actualizaciones y correcciones sobre este material. Information on the type specimens (50 holotypes and their paratypes) of mammals (Xenarthra, Insectivora, Chiroptera, Primates, C...

  7. investigations concerning the FMD-outbreak in Europe in 2001

    OpenAIRE

    Mouchantat, Susan

    2010-01-01

    Foot-and-mouth disease (FMD) is an acute febrile infectious disease characterized by the formation of vesicles and erosions on mucous membranes (squamous epithelium) of the alimentary tract and on hairless skin. In addition to the order Artiodactyla families of the order Insectivora, Rodentia, Proboscidea, Perissodactyla and Carnivora are susceptible to a foot-and-mouth disease virus (FMDV) infection. Most descriptions of FMD in naturally infected roe deer (Capreolus capreolus) in Europe a...

  8. Chernobyl fallout in small mammals captured in Sweden

    International Nuclear Information System (INIS)

    An investigation was carried out aimed at studying the contamination of small mammals (orders Rodentia and Insectivora) following the Chernobyl fallout. The animals were captured in three differently contaminated areas and, for control, in an area with negligible fallout. The results obtained show that the activity in the captured animals varied and depended on surface deposition. The differences between the species are investigated and the influence of feeding habits on the contamination levels are discussed. (orig.)

  9. Notes on the Mammals Found in Kazdağı National Park and Its Environs

    OpenAIRE

    Nuri YİĞİT; DEMİRSOY, Ali; Ahmet KARATAŞ; ÖZKURT, Şakir; ÇOLAK, Ercüment

    2006-01-01

    The present study is based on species collected and observed in Kazdağı National Park and its surroundings. Field collections yielded 40 mammal species from 6 orders: Insectivora (4), Chiroptera (14), Lagomorpha (1), Rodentia (11), Carnivora (8), and Artiodactyla (2), Of the species recorded in this study, 6 were new records from north-west Anatolia: Sorex volnuchini, Rhinolophus hipposideros, Myotis emarginatus, Eptesicus serotinus, Hypsugo savii, and Microtus subterraneus.

  10. Cellular scaling rules for rodent brains

    OpenAIRE

    Herculano-Houzel, Suzana; Mota, Bruno; Lent, Roberto

    2006-01-01

    How do cell number and size determine brain size? Here, we show that, in the order Rodentia, increased size of the cerebral cortex, cerebellum, and remaining areas across six species is achieved through greater numbers of neurons of larger size, and much greater numbers of nonneuronal cells of roughly invariant size, such that the ratio between total neuronal and nonneuronal mass remains constant across species. Although relative cerebellar size remains stable among rodents, the number of cer...

  11. Omega-3 fatty acids reduce the development of preneoplasic lesions Ácidos graxos ômega-3 reduzem o desenvolvimento de lesões pré-neoplásicas

    OpenAIRE

    Viviana Teixeira Henriques; Cristina Maria Ganns Chaves Dias; Sylvia do Carmo Castro Franceschini; Céphora Maria Sabarense; Neuza Maria Brunoro Costa; Jacqueline Isaura Alvarez Leite; Maria do Carmo Gouveia Peluzio

    2009-01-01

    OBJECTIVE: The purpose of this study was to evaluate the anticancer potential of dietary omega-3 supplementation to reduce induced intestinal preneoplastic lesions in Wistar rats. METHODS: A total of 58 11-week-old male Wistar rats (Rattus norvergicus, albinus variety, Rodentia) were distributed into two groups: a control group (n=25) and an omega-3-treated group (n=28). Aberrant crypt foci were induced by 1,2-dimethylhydrazine. Tissue incorporation of the supplemented omega-3 fatty acids was...

  12. Small mammal community structure and microhabitat use in the austral boundary of the Atlantic Forest, Brazil

    Directory of Open Access Journals (Sweden)

    Daniela O. de Lima

    2010-02-01

    Full Text Available We investigated the richness, composition, and species relative abundance of a terrestrial small mammal community in a Deciduous Forest area in the austral boundary of the Atlantic Forest. The microhabitat use of the most common species was also investigated. Six rodents - Akodon montensis (Thomas, 1913, Oligoryzomys nigripes (Olfers, 1818, Sooretamys angouya (Thomas, 1913, Thaptomys nigrita (Lichtenstein, 1829, Mus musculus (Linnaeus, 1758 and Juliomys sp. - and one marsupial - Didelphis albiventris (Lund, 1840 - were captured. Thaptomys nigrita is recorded in the state of Rio Grande do Sul for the first time. Species richness was poor when compared with communities in the central portions of the Atlantic Forest, but equivalent to that found in the Araucaria and Dense Ombrophilous forests of southern Brazil. The species most often captured in our study, A. montensis and O. nigripes, are also the most common in the majority of faunistic studies carried out in the Atlantic Forest. Akodon montensis and S. angouya used places with high abundance of bamboo, possibly to avoid predators. Oligorizomys nigripes used areas with a high density of scrubs, what could facilitate aboveground movements, and was negatively correlated to mature forest indicators, which reinforce the idea that this species has opportunistic habits.

  13. Mammal diversity in the middle basin of the river Tambopata, Puno, Peru

    Directory of Open Access Journals (Sweden)

    Víctor Pacheco

    2011-08-01

    Full Text Available This study documents the mammalian diversity in the Tambopata River middle basin, one of the most important information gaps in Peru. Five sites were evaluated in Puno (San Fermín 850 m, Curva Alegre 950 m, Challohuma 1200 m, Yanahuaya 1600 m, and Yanacocha 1985 m. The trapping effort was 7072 trap-nights and 201 mistnet-nights. 76 species were recorded in the study area, including 16 species under some conservation’s category. Bats and rodents were the most diverse orders (67.5%. The diversity indices of Shannon-Wiener and Simpson for small mammals show a moderate and mild negative correlation with elevation, respectively. Meanwhile the altitude is negatively correlated with the relative abundance (RA of bats, and positively with the RA of non-volant mammals. The marsupials Marmosa (Micoureus demerarae, Marmosops bishopi and Marmosops impavidus; the rodent Neacomys musseri, and bats Platyrrhinus albericoi, P. masu, P. nigellus, Eumops auripendulus and Cormura brevirostris are first records for the department of Puno. Akodon baliolus and Oxymycterus juliacae are considered valid species. The species Sturnira lilium and Akodon baliolus were those with the highest RA. Our records, added to published and unpublished data, indicate that the Río Tambopata watershed is habitat of 141 species of mammals. Finally, we recommend the extension of the southern part of the buffer zone of the PNBS to include the montane forests of Yanacocha, to protect the unique middleelevation fauna of the Río Tambopata watershed.

  14. Microhabitat of small mammals at ground and understorey levels in a deciduous, southern Atlantic forest.

    Science.gov (United States)

    Melo, Geruza L; Miotto, Barbara; Peres, Brisa; Cáceres, Nilton C

    2013-01-01

    Each animal species selects specific microhabitats for protection, foraging, or micro-climate. To understand the distribution patterns of small mammals on the ground and in the understorey, we investigated the use of microhabitats by small mammals in a deciduous forest of southern Brazil. Ten trap stations with seven capture points were used to sample the following microhabitats: liana, fallen log, ground litter, terrestrial ferns, simple-trunk tree, forked tree, and Piper sp. shrubs. Seven field phases were conducted, each for eight consecutive days, from September 2006 through January 2008. Four species of rodents (Akodon montensis, Sooretamys angouya, Oligoryzomys nigripes and Mus musculus) and two species of marsupials (Didelphis albiventris and Gracilinanus microtarsus) were captured. Captured species presented significant differences on their microhabitat use (ANOVA, p = 0.003), particularly between ground and understorey sites. Akodon montensis selected positively terrestrial ferns and trunks, S. angouya selected lianas, D. albiventris selected fallen trunks and Piper sp., and G. microtarsus choose tree trunks and lianas. We demonstrated that the local small-mammal assemblage does select microhabitats, with different types of associations between species and habitats. Besides, there is a strong evidence of habitat selection in order to diminish predation. PMID:23828340

  15. Nematode parasites of marsupials and small rodents from the Brazilian Atlantic Forest in the State of Rio de Janeiro, Brazil

    Directory of Open Access Journals (Sweden)

    Gomes Delir Corrêa

    2003-01-01

    Full Text Available Nematodes from opossums and rodents captured in the Brazilian Atlantic Forest in the State of Rio de Janeiro, Brazil were studied. From the opossums Didelphis aurita Weid-Neuweid, 1826 and Philander opossum (Linnaeus, 1758 the following nematode species were recovered: Viannaia hamata Travassos, 1914, Aspidodera raillieti Travassos, 1913, Cruzia tentaculata (Rudolphi, 1819, Travassos, 1917, Turgida turgida (Rudolphi, 1819 Travassos, 1919, Gongylonemoides marsupialis (Vaz & Pereira, 1934 Freitas & Lent, 1937, Viannaia viannai Travassos, 1914, Spirura guianensis (Ortlepp, 1924 Chitwood, 1938 and from the rodents Akodon cursor (Winger, 1887, Nectomys squamipes (Brants, 1827, Oligoryzomys eliurus (Wagner, 1845 and Oryzomys intermedius (Leche, 1886: Hassalstrongylus epsilon (Travassos, 1937 Durette-Desset, 1971, Syphacia obvelata (Rudolphi, 1802 Seurat, 1916, S. venteli Travassos, 1937, Physaloptera bispiculata Vaz & Pereira, 1935, Litomosoides carinii (Travassos, 1919 Vaz, 1934, Viannaia viannai, Hassalstrongylus epsilon, H. zeta (Travassos, 1937 Durette-Desset, 1971, Stilestrongylus aculeata (Travassos, 1918 Durette-Desset, 1971 S. eta (Travassos, 1937 Durette-Desset, 1971. Highest worm burdens and prevalences were those related to Cruzia tentaculata in marsupials. Stilestrongylus aculeata was referred for the first time in Akodon cursor.

  16. Susceptibilidad a Insecticidas y Actividad Enzimática de Cydia pomonella L. (Lepidoptera: Tortricidae Proveniente de Tres Huertos de la Región del Maule, Chile Insecticide Susceptibility and Enzymatic Activity of Cydia pomonella L. (Lepidoptera: Tortricidae from Three Apple Orchards of Maule Region, Chile

    Directory of Open Access Journals (Sweden)

    Maritza Reyes

    2004-07-01

    Full Text Available Cydia pomonella L., la principal plaga de pomáceas y nogales en Chile, ha sido controlada casi exclusivamente con aplicaciones de insecticidas organofosforados. Sin embargo, durante las últimas temporadas se han observado crecientes niveles de frutos dañados a cosecha. Dado que esta plaga ha desarrollado resistencia a insecticidas en varios países, se evaluó la susceptibilidad a dosis diagnóstico de azinfos metil y tebufenozide de larvas diapausantes provenientes de tres huertos de manzano de la Región del Maule y una cepa susceptible de referencia (S; además de la actividad de enzimas detoxificadoras en adultos emergidos de las mismas Tanto la actividad de oxidasas de función múltiple (OFM como de glutation-S-transferasas (GST se evaluó a través de fluorimetría, mientras la de esterasas (EST se determinó por absorbancia. La mortalidad larvaria frente a azinfos metil fue significativamente menor para Molina y Teno (30 y 85,4%, respectivamente que para la cepa S (95,3%. Para tebufenozide la mortalidad larvaria fue significativamente menor en Molina (35,31% que en la cepa S (88,6%. La actividad de GST fue significativamente mayor en dos de los tres huertos analizados (Teno = 13.679 unidades de fluorescencia insecto-1 y Molina =13.096 unidades de fluorescencia insecto-1. Similarmente, la actividad de OFM fue significativamente mayor en los mismos huertos, con valores 25,08 y 17,95 picogramos (pg de 7OH insecto-1 min.-1 para Molina y Teno, respectivamente. La cepa S presentó una actividad de EST significativamente mayor que la de las otras poblaciones, la cual parece no estar relacionada con la menor susceptibilidad a los insecticidas evaluados.Cydia pomonella L., the major pest of pome fruits and walnuts in Chile, has been controlled almost exclusively with applications of organophosphates insecticides. However, during the last few seasons, increasing levels of fruit damage at harvest have been observed. Given that this insect has

  17. Reinventing Democracy in Bolivia and Latin America

    Directory of Open Access Journals (Sweden)

    Ton Salman

    2008-04-01

    Full Text Available – Citizenship in Latin America, by Joseph S. Tulchin and Meg Ruthenburg (eds. Boulder/London: Lynne Rienner, 2006. – Participación política, democracia y movimientos indígenas en los Andes, by Jorge León, et al. La Paz, Lima: PIEB / IFEA / Embajada de Francia en Bolivia, 2005. – El estado del Estado en Bolivia – Informe Nacional sobre Desarrollo Humano 2007, coordinación general George Gray Molina. UNDP / PNUD, Bolivia, 2007. – El Estado de la opinión: los bolivianos, la Constitución y la Constituyente – Encuestas para el Desarrollo Humano, coordinadores George Gray Molina, Alfonso Ferrufino and Antonio Araníbar. UNDP / PNUD, Bolivia, 2007. – Democracia de alta tensión – Conflictividad y cambio social en la Bolivia del siglo XXI, by César Rojas Ríos. La Paz: Plural Editores, 2007.

  18. Fijacion primaria y variaciones morfologicas, durante la metamorfosis de algunos bivalvos chilenos

    Directory of Open Access Journals (Sweden)

    Juan Uribe Barichivith

    1980-12-01

    Full Text Available The larval primary settlement and the changes originated during the metamorphosis of some species of Chilean bivalves, are comparatively studied, being described, the larval and post - larval stages from the veliconcha to late plantigrade. By observing in ropes "anchovetera" nets and plankton samples, in the mitiliculture of Codihué (41º 46'S; 73º 24'W, it was verified for Mytilus chilensis Hupé, 1854 and Aulacomya ater (Molina, 1782, primary settlement on the filamentous algae of genera Enteromorpha with an average size of 33º µ high, minimum average of definitive settlement, byssus positional changes, etc. Information concerning average and number of larval and post - larval attachment to different deep and inmersión period and morphological characters of larval and post - larval of: Bankia martensi Stempell, 1898 (Teredinidae, Pholas chiloensis (Molina, 1782 (Pholadidae y Chlamys patriae Doello Jurado, 1918 (Pectinidae, are also given.

  19. Zooplankton characterisation of Pampean saline shallow lakes, habitat of the Andean flamingoes

    OpenAIRE

    Yamila S. Battauz; Susana B. José de Paggi; Juan C. Paggi; Marcelo Romano; Ignacio Barberis

    2013-01-01

    The lowland saline shallow lakes in the Pampa de las Lagunas (Argentina), constitute an important habitat for flamingoes Phoenicopterus chilensis Molina and Phoenicoparrus andinus (Philippii). Little is known about the zooplankton communities of these systems, and their relationships with the temporal and spatial distribution of flamingoes. Ten shallow lakes in the Pampean region were studied in 2009 and 2010 winters, and in 2010 summer in order to assess the abundance, size and biomass of zo...

  20. Analysis of couplers between photonic nanowires and subwavelength grating waveguides

    Czech Academy of Sciences Publication Activity Database

    Čtyroký, Jiří; Kwiecien, P.; Richter, I.; Cheben, P.

    Vol. 8781. BELLINGHAM: SPIE, 2013 - (Cheben, P.; Čtyroký, P.; MolinaFernandez, I.) ISBN 978-0-8194-9583-9. ISSN 0277-786X. [Conference on Integrated Optics - Physics and Simulations. Prague (CZ), 17.04.2013-18.04.2013] R&D Projects: GA ČR(CZ) GAP205/10/0046 Institutional support: RVO:67985882 Keywords : Optical waveguide theory * numerical modeling * Bloch modes Subject RIV: JA - Electronics ; Optoelectronics, Electrical Engineering

  1. Fijacion primaria y variaciones morfologicas, durante la metamorfosis de algunos bivalvos chilenos

    OpenAIRE

    Juan Uribe Barichivith; Daniel López Stefoni

    1980-01-01

    The larval primary settlement and the changes originated during the metamorphosis of some species of Chilean bivalves, are comparatively studied, being described, the larval and post - larval stages from the veliconcha to late plantigrade. By observing in ropes "anchovetera" nets and plankton samples, in the mitiliculture of Codihué (41º 46'S; 73º 24'W), it was verified for Mytilus chilensis Hupé, 1854 and Aulacomya ater (Molina, 1782), primary settlement on the filamentous algae of genera En...

  2. Ethanol-mediated operant learning in the infant rat leads to increased ethanol intake during adolescence

    OpenAIRE

    Ponce, Luciano Federico; Pautassi, Ricardo Marcos; Norman E. Spear; Molina, Juan Carlos

    2008-01-01

    Recent studies indicate that the infant rat has high affinity for ethanol ingestion and marked sensitivity to the drug’s reinforcing effects (Spear & Molina, 2005). A novel operant technique was developed to analyze reinforcing effects of ethanol delivery during the third postnatal week. The impact of this ethanol-reinforcement experience upon subsequent ethanol consumption during adolescence (postnatal weeks 5–6 was also examined. In Experiment 1, pups (postnatal days 14–17 were given an exp...

  3. Temporal evolution of adherents of the major religions in Mexico: Avrami model application-Kolgomorov solid training

    OpenAIRE

    Avilés, Mauricio González; Campuzano, Hermelinda Servín

    2013-01-01

    It applies a mathematical model of solid formation, the model of Avrami-Kolgomorov [Ausloos & Petroni, 2007] to model the time evolution of percentage of adherents of the major religions practiced in Mexico, adjusting the corresponding parameters with available records in the period from 1950 to 2000 [Molina-Hernandez, 2003; INEGI, 2005]. A comparison is made with the application of the model to global trends and concludes that Catholicism is in a marked disaggregation and trends of Christian...

  4. Phytochemical and pharmacological review of Lagenaria sicereria

    OpenAIRE

    Rakesh P Prajapati; Manisha Kalariya; Parmar, Sachin K.; Sheth, Navin R.

    2010-01-01

    Lagenaria siceraria (Molina) standley (LS) (Family: Cucurbitaceae) is an annual herbaceous climbing plant with a long history of traditional medicinal uses in many countries, especially in tropical and subtropical regions. Since ancient times the climber has been known for its curative properties, and has been utilized for treatment of various ailments, including jaundice, diabetes, ulcer, piles, colitis, insanity, hypertension, congestive cardiac failure (CCF), and skin diseases. Its fruit p...

  5. Taller de capacitación en el manejo del gorgojo de Los Andes

    OpenAIRE

    Universidad Nacional Agraria La Molina. Instituto de la Pequeña Producción Sustentable

    2008-01-01

    El presente documento contiene el desarrollo del taller de manejo del gorgojo de los Andes en la Comunidad Campesina de Santa María, trabajo fue realizado por el equipo del Instituto de la Pequeña Producción Sustentable (IPPS) de la Universidad Nacional Agraria La Molina - UNALM, en el marco del desarrollo del proyecto: Desarrollo de capacidades para la adaptación al cambio climático y de mercado en comunidades del Altiplano.

  6. La agricultura nahua en el siglo XVI

    OpenAIRE

    Jácome Alba González

    2001-01-01

    Alonso de Molinas Vocabulary is the main historical source followed by the author of this article in order to understand the Nahua agriculture at the end of the XVI century. There are also other historical sources utilized by Alba González to compare the information about types of soils, climate, vegetation, agricultural technicques and the technology associated with it and about irrigation. The article has a broad information about agricultural managements an...

  7. A Discrete/Continuous Choice Approach to Residential Water Demand under Block Rate Pricing

    OpenAIRE

    Hewitt, Julie A.; W. Michael Hanemann

    1995-01-01

    A discrete/continuous choice model of the residential demand for water under block rate pricing is presented, estimated, and compared to results of regression models. The empirical analysis uses a dataset from a previously published study, Nieswiadomy and Molina (1989), of household level panel data from Denton, Texas, for summer months from 1981 to 1985 with an increasing block rate in effect. The striking result is that the discrete/ continuous choice model produces price elasticity estimat...

  8. Nuevas adiciones de bivalvos a la malacofauna marina peruana

    Directory of Open Access Journals (Sweden)

    Carlos Paredes

    2014-06-01

    Full Text Available Cuatro especies de moluscos bivalvos marinos, Nuculana (Jupiteria cuneata (Sowerby, 1833, Isognomon (Isognomón janus Carpenter, 1857, Ostrea conchaphila Carpenter, 1857 y Mysella (Rochefortia molinae Ramorino, 1968 se reportan por primera vez para el mar peruano. Se incluye datos sobre la distribución geográfica y el hábitat de cada una de las especies.

  9. Resonance effects in the optical antennas shaped as finite comb-like gratings of noble-metal nanostrips

    Czech Academy of Sciences Publication Activity Database

    Shapoval, O.V.; Nosich, A. I.; Čtyroký, Jiří

    Vol. 8781. BELLINGHAM : SPIE, 2013 - (Cheben, P.; Čtyroký, P.; MolinaFernandez, I.) ISBN 978-0-8194-9583-9. ISSN 0277-786X. [Conference on Integrated Optics - Physics and Simulations. Prague (CZ), 17.04.2013-18.04.2013] Institutional support: RVO:67985882 Keywords : noble-metal thin strips * nanoantennas * grating resonance s Subject RIV: JA - Electronics ; Optoelectronics, Electrical Engineering

  10. [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.

  11. Overfishing population characteristics of razor clam, Ensis macha, from Independencia Bay, Peru, in 2004 year

    OpenAIRE

    Juan Tarazona; Jürgen Laudien

    2011-01-01

    Quantitative monthly samplings, in 2004, were carried out to estimate the density and biomass of Ensis macha (Molina 1782), from Morro Quemado area, Bay Independence, Pisco. The present study analyzes biometric relationships, growth parameters and somatic production using the ELEFAN I routine and the Crisp’s method. During the year 2004 the rate of exploitation (E= 0.69 y-1) was significantly bigger than the values of 2003 and the monthly landings (maximum of 335 t) and fishing effort (maximu...

  12. Cytogenetic characterization of Caesalpinia spinosafrom Tarma and Palca (Junín

    Directory of Open Access Journals (Sweden)

    Alberto López

    2014-03-01

    Full Text Available Somatic chromosomes of Caesalpinia spinosa (Feuillée ex Molina Kuntze, “Tara”, wild populations of Huinco and Palca (Junín regions were studied. The specie were diploid (2n=24. Chromosomes were small. The karyotypes showed the same chromosome number, they found differences in morphological parameters of the same, with the karyotype formula for the town of Huinco: 6m + 6 sm and the town of Palca: 5m + 7 sm.

  13. STUDY OF SOIL AMPLIFICATION BASED ON MICROTREMOR AND SEISMIC RECORDS IN LIMA PERU

    Science.gov (United States)

    Calderon, Diana; Sekiguchi, Toru; Nakai, Shoichi; Aguilar, Zenon; Lazares, Fernando

    The dynamic characteristics of the ground in Lima, capital of Peru, specifically the amplification are investigated. By using the small and large microtremor array measurements we estimated the soil velocity profiles with depths to the bedrock in many cases. These profiles were used to estimate the amplification factors. Important results are the large amplification factors at EMO, VSV, CAL and CMA (La Molina, Villa El Salvador, El Callao and Bellavista district, respectively).

  14. What would have happened to the ozone layer if chlorofluorocarbons (CFCs) had not been regulated?

    OpenAIRE

    P. A. Newman; Oman, L.D.; A. R. Douglass; E. L. Fleming; Frith, S. M.; M. M. Hurwitz; Kawa, S. R.; C. H. Jackman; Krotkov, N.A.; Nash, E. R.; Nielsen, J E; S. Pawson; Stolarski, R. S.; Velders, G.J.M.

    2009-01-01

    Ozone depletion by chlorofluorocarbons (CFCs) was first proposed by Molina and Rowland in their 1974 Nature paper. Since that time, the scientific connection between ozone losses and CFCs and other ozone depleting substances (ODSs) has been firmly established with laboratory measurements, atmospheric observations, and modeling studies. This science research led to the implementation of international agreements that largely stopped the production of ODSs. In this study we use...

  15. Global Governance and the MDGs: The story of an impossible love?

    OpenAIRE

    Núria Molina Gallart

    2005-01-01

    If current world trends do not change, the attainment of the millennium development goals (MDGs) will be seriously compromised. During the last decades, priority has been given to economic and commercial globalization, while little is done towards the vitally important issue of globalizing sustainable human development. Nuria Molina argues for institutional mechanisms to ensure greater global social justice, adjusting social imbalances worldwide and guaranteeing a more ethical functioning of ...

  16. Luces y sombras de la calidad de la democracia en América Latina

    OpenAIRE

    Manuel Alcántara Sáez

    2008-01-01

    El artículo analiza el concepto de calidad de la democracia, contemplando la aplicación de distintos índices a la realidad política de los países de América Latina; a saber: Freedom House, IDD (Fundación Konrad Adenauer), The Economist Intelligence Unit (EIU) y el elaborado por Levine y Molina.

  17. What would have happened to the ozone layer if chlorofluorocarbons (CFCs) had not been regulated?

    OpenAIRE

    Newman, P. A; L. D. Oman; A. R. Douglass; Fleming, E. L.; S. M. Frith; M. M. Hurwitz; Kawa, S.R.; Jackman, C. H.; N. A. Krotkov; Nash, E. R.; Nielsen, J. E.; S. Pawson; R. S. Stolarski; G. J. M. Velders

    2009-01-01

    Ozone depletion by chlorofluorocarbons (CFCs) was first proposed by Molina and Rowland in their 1974 Nature paper. Since that time, the scientific connection between ozone losses and CFCs and other ozone depleting substances (ODSs) has been firmly established with laboratory measurements, atmospheric observations, and modeling research. This science research led to the implementation of international agreements that largely stopped the production of ODSs. In this study we use a fully-c...

  18. Inhibitory action of some essential oils and phytochemicals on the growth of various moulds isolated from foods

    OpenAIRE

    Evandro Leite de Souza; Edeltrudes de Oliveira Lima; Kristerson Reinaldo de Luna Freire; Cristina Paiva de Sousa

    2005-01-01

    The aim of this study was to determine the sensitivity profile of mould strains isolated from foods to some essential oils and phytochemicals. The assayed mould strains were: Fusarium spp., Rhizopus spp., Aspergillus flavus, A. niger and Penicillium spp. According to results, Lippia alba N.E. Brown, Peumus boldus Molina, Lippia microphylla Phil., Citrus limon Risso and Cymbopogon citratus Stapf. essential oil and the phytochemicals citral, eugenol and mircene showed prominent antimould activi...

  19. Simulations of waveguide Bragg grating filters based on subwavelength grating waveguide

    Czech Academy of Sciences Publication Activity Database

    Čtyroký, Jiří; Kwiecien, P.; Wang, J.; Richter, I.; Glesk, I.; Chen, L.

    Vol. 9516. Bellingham: SPIE, 2015 - (Cheben, P.; Čtyroký, J.; Molina-Fernandez, I.), 95160M ISBN 978-1-62841-637-4. ISSN 0277-786X. [Conference on Integrated Optics - Physics and Simulations II. Prague (CZ), 13.04.2015-15.04.2015] R&D Projects: GA ČR GA15-07908S Institutional support: RVO:67985882 Keywords : Fourier modal method * finite difference time domain method * photonic nanowire Subject RIV: BH - Optics, Masers, Lasers

  20. Ethnobotany of Hulu(Lagenaria siceraria)%葫芦的民族植物学

    Institute of Scientific and Technical Information of China (English)

    陈重明

    2002-01-01

    @@ 葫芦(Lagenaria siceraria(Molina)Standl.)系葫芦科植物,在我国有着悠久的应用的历史,在古代人民的经济生活和医疗活动中均有重要的地位,而且在民俗文化方面更有丰富的内容,和宗教、植物崇拜有着密切的关系.

  1. Why can't rodents vomit? A comparative behavioral, anatomical, and physiological study.

    Directory of Open Access Journals (Sweden)

    Charles C Horn

    Full Text Available The vomiting (emetic reflex is documented in numerous mammalian species, including primates and carnivores, yet laboratory rats and mice appear to lack this response. It is unclear whether these rodents do not vomit because of anatomical constraints (e.g., a relatively long abdominal esophagus or lack of key neural circuits. Moreover, it is unknown whether laboratory rodents are representative of Rodentia with regards to this reflex. Here we conducted behavioral testing of members of all three major groups of Rodentia; mouse-related (rat, mouse, vole, beaver, Ctenohystrica (guinea pig, nutria, and squirrel-related (mountain beaver species. Prototypical emetic agents, apomorphine (sc, veratrine (sc, and copper sulfate (ig, failed to produce either retching or vomiting in these species (although other behavioral effects, e.g., locomotion, were noted. These rodents also had anatomical constraints, which could limit the efficiency of vomiting should it be attempted, including reduced muscularity of the diaphragm and stomach geometry that is not well structured for moving contents towards the esophagus compared to species that can vomit (cat, ferret, and musk shrew. Lastly, an in situ brainstem preparation was used to make sensitive measures of mouth, esophagus, and shoulder muscular movements, and phrenic nerve activity-key features of emetic episodes. Laboratory mice and rats failed to display any of the common coordinated actions of these indices after typical emetic stimulation (resiniferatoxin and vagal afferent stimulation compared to musk shrews. Overall the results suggest that the inability to vomit is a general property of Rodentia and that an absent brainstem neurological component is the most likely cause. The implications of these findings for the utility of rodents as models in the area of emesis research are discussed.

  2. Toxoplasma gondii antibodies in wild rodents and marsupials from the Atlantic Forest, state of São Paulo, Brazil.

    Science.gov (United States)

    Gennari, Solange Maria; Ogrzewalska, Maria Halina; Soares, Herbert Sousa; Saraiva, Danilo Gonçalves; Pinter, Adriano; Nieri-Bastos, Fernanda Aparecida; Labruna, Marcelo Bahia; Szabó, Matias Pablo Juan; Dubey, Jitender Prakash

    2015-01-01

    Toxoplasma gondii is a protozoan parasite that infects a large spectrum of warm-blooded animals, including humans. Small rodents and marsupials play an important role in the epidemiology of T. gondii because they are sources of infection for domestic and feral cats. Serum samples from 151 rodents and 48 marsupials, captured in the Atlantic Forest, São Paulo State, southeastern Brazil, were analyzed for the presence of T. gondii antibodies. Antibodies detected by the modified agglutination test (MAT ≥ 25) were found in 8.6% (13/151) of the rodents and 10.4% (5/48) of the marsupials, with titers ranging from 25 to 6400 and from 25 to 3200, respectively for the rodents and marsupials. Three of the eight species of rodents (Akodon spp., Oligoryzomys nigripesand Rattus norvegicus), and one from the four marsupial species (Didelphis aurita) presented positive animals. T. gondii was described for the first time in the rodent Oligoryzomys nigripes. PMID:26444068

  3. Microhabitat of small mammals at ground and understorey levels in a deciduous, southern Atlantic Forest

    Directory of Open Access Journals (Sweden)

    GERUZA L. MELO

    2013-06-01

    Full Text Available Each animal species selects specific microhabitats for protection, foraging, or micro-climate. To understand the distribution patterns of small mammals on the ground and in the understorey, we investigated the use of microhabitats by small mammals in a deciduous forest of southern Brazil. Ten trap stations with seven capture points were used to sample the following microhabitats: liana, fallen log, ground litter, terrestrial ferns, simple-trunk tree, forked tree, and Piper sp. shrubs. Seven field phases were conducted, each for eight consecutive days, from September 2006 through January 2008. Four species of rodents (Akodon montensis, Sooretamys angouya, Oligoryzomys nigripes and Mus musculus and two species of marsupials (Didelphis albiventris and Gracilinanus microtarsus were captured. Captured species presented significant differences on their microhabitat use (ANOVA, p = 0.003, particularly between ground and understorey sites. Akodon montensis selected positively terrestrial ferns and trunks, S. angouya selected lianas, D. albiventris selected fallen trunks and Piper sp., and G. microtarsus choose tree trunks and lianas. We demonstrated that the local small-mammal assemblage does select microhabitats, with different types of associations between species and habitats. Besides, there is a strong evidence of habitat selection in order to diminish predation.Cada espécie animal pode apresentar seletividade por micro-habitats priorizando proteção, forrageio ou microclima. Para compreender os padrões de distribuição de pequenos mamíferos ao nível do solo e de sub-bosque, nós analisamos o uso de micro-habitat por pequenos mamíferos em uma floresta estacional no sul do Brasil. Dez estações amostrais com sete pontos de captura foram usadas para amostragem dos seguintes microhabitats: liana, tronco caído, solo apenas coberto por folhiço, solo coberto por samambaias, árvore com tronco simples, árvore com bifurcações e arbustos do g

  4. Small todents fleas from the bubonic plague focus located in the Serra dos Órgãos Mountain Range, State of Rio de Janeiro, Brazil

    Directory of Open Access Journals (Sweden)

    Raimundo Wilson de Carvalho

    2001-07-01

    Full Text Available Eleven species of fleas were collected from 601 small rodents, from November 1995 to October 1997, in areas of natural focus of bubonic plague, including the municipalities of Nova Friburgo, Sumidouro and Teresópolis, State of Rio de Janeiro, Brazil. Among 924 fleas collected, Polygenis (Polygenis rimatus (Rhopalopsyllidae was the predominant species regarding the frequency, representing 41.3% (N:382, followed by P. (Neopolygenis pradoi, representing 20% (N:185 and Craneopsylla minervaminerva (Stephanocircidae, representing 18.9% (N:175. The host Akodon cursor harbored 47.9% of these fleas. Other six host species were infested by 52.1% of the remaining fleas. Fleas were found on hosts and in places within the focus not previously reported by the literature.

  5. Perfil coproparasitológico de mamíferos silvestres en cautiverio en el estado de Pernambuco, Brasil COPROPARASITOLOGIC PROFILE OF CAPTIVE WILD MAMMALS IN PERNAMBUCO STATE, BRAZIL

    Directory of Open Access Journals (Sweden)

    MANUELA FIGUEIROA LYRA DE FREITAS

    2001-07-01

    Full Text Available A través de los métodos directo, de sedimentación y de flotación fueron analizadas muestras fecales de 62 mamíferos de las órdenes Artiodactyla (n=08, Carnivora (n=20, Perissodactyla (n=03, Primates (n=29 y Rodentia (n=02 mantenidos en cautiverio en el Parque Dois Irmãos, Recife, Pernambuco, Brasil. De los 62 animales analizados, 46 (74,2% estaban parasitados de los cuales 22 (75,9% pertenecían al orden Primates, 19 (95,0% al orden Carnivora, 3 (37,5% al orden Artiodactyla, y 2 (100% al orden Rodentia. Los animales del orden Perissodactyla presentaron resultados negativos en todas las muestras analizadas. El poliparasitismo tuvo prevalecía de 90,7% y los parásitos gastrointestinales diagnosticados fueron Strongyloides fulleborni, Strongyloides sp, Baylisascaris sp, Toxascaris leonina, Trichuris vulpis, Trichuris sp, Ascaridoidea, Strongyloidea, Spiruroidea, Ancilostomídeos, Trematoda, Balantidium coli, Entamoeba coli, E. histolytica, Giardia sp y Coccídios. El método de sedimentación espontánea demostró ser el más eficiente en la detección de los parásitos gastrointestinalesThe wild animals are hosts of a large number of internal and external parasites which interfere in the performance of this animals in captivity. The aim of this study was to identify the gastrointestinal parasites of captive wild mammals from Parque Dois Irmãos, located in Recife city, Pernambuco state, Brazil. Fresh faecal samples of 62 mammals of the Artiodactyla (n=08, Carnivora (n=20, Perissodactyla (n=03, Primates (n=29 and Rodentia (n=02 orders were analyzed by direct, spontaneous sedimentation and flotation techniques. Among the 62 animals 46 (74.2% showed positive results for helminths and/or protozoa, distributed at follows: 22 (75.9% Primates, 19 (95.0% Carnivora, 03 (35.7% Artiodactyla, and 02 (100.0% Rodentia. All the Perissodactyla showed negative results. The prevalence of poliparasitism was 90.7% and the gastrointestinal parasites identified

  6. Perfil coproparasitológico de mamíferos silvestres en cautiverio en el estado de Pernambuco, Brasil COPROPARASITOLOGIC PROFILE OF CAPTIVE WILD MAMMALS IN PERNAMBUCO STATE, BRAZIL

    OpenAIRE

    MANUELA FIGUEIROA LYRA DE FREITAS; AQUELINE BIANQUE DE OLIVEIRA; MIRIAM DOWELL DE BRITO CAVALCANTI; RIVÂNIA ALVES OLIVEIRA; ANTÔNIO EVÊNCIO SOBRINHO

    2001-01-01

    A través de los métodos directo, de sedimentación y de flotación fueron analizadas muestras fecales de 62 mamíferos de las órdenes Artiodactyla (n=08), Carnivora (n=20), Perissodactyla (n=03), Primates (n=29) y Rodentia (n=02) mantenidos en cautiverio en el Parque Dois Irmãos, Recife, Pernambuco, Brasil. De los 62 animales analizados, 46 (74,2%) estaban parasitados de los cuales 22 (75,9%) pertenecían al orden Primates, 19 (95,0%) al orden Carnivora, 3 (37,5%) al orden Artiodactyla, y 2 (100%...

  7. Distribución de fibronectina y laminina en el corpúsculo renal de diversas especies de roedores

    OpenAIRE

    Götzens Garcia, Guadalupe

    2004-01-01

    [spa] Objetivos: El objeto de estudio es la membrana basal glomerular (M.B.G.) y la distribución de dos de las moléculas estructurales de las matrices extracelulares del corpúsculo renal, la fibronectina y la laminina. el estudio se ha realizado con cuatro especies aparentemente próximas de un mismo grupo zoológico (Rodentia) dado que experimentalmente, se incorporan nuevas especies como animales de laboratorio, comparando un animal estándar de laboratorio, con especies silvestres, con distin...

  8. Sivi puh (Glis glis Linnaeus, 1766), od ulova do namirnice

    OpenAIRE

    Konjević, Dean; Krapinec, Krešimir

    2004-01-01

    Sivi puh (Glis glis L.) je naša autohtona divljač iz reda glodavaca (Rodentia), porodice puhova (Myoxidae) i roda puh (Glis). Tradicija lova na puhove je iznimno stara i potječe još od vremena Rimskog Carstva. U Republici Hrvatskoj se lov na puhove do danas održao na području Gorskog kotara i Like. Za razliku od negdašnjeg pristupa, danas se sivi puh lovi isključivo posebno konstruiranim lovkama, pri čemu je za lov neophodno dobiti odgovarajuću dozvolu. Ulovljeni puhovi koriste se u prehrani,...

  9. Infecções naturais de mamíferos silvestres em área endêmica de leishmaniose tegumentar do Estado de São Paulo, Brasil Natural infection of sylvatic mammals of cutaneous leishmaniasis in S. Paulo State, Brazil

    Directory of Open Access Journals (Sweden)

    Oswaldo Paulo Forattini

    1972-09-01

    Full Text Available Descreve-se a presença de foco de leishmaniose tegumentar no vale do rio Moji-Guaçú, em região comum aos municípios de Luiz Antonio, São Carlos, Rincão e Santa Rita do Passa Quatro, no Estado de São Paulo, Brasil. Os casos humanos apresentavam formas clínicas caracterizadas por lesões úlcero-vegetantes, de evolução lenta e pobres em parasitos. As investigações sobre infecção natural em animais silvestres levou ao isolamento de roedores, de três cepas em cultura, duas procedentes de Akodon arviculoides e uma de Oryzomys nigripes. As provas de inoculação em hamsters foram, até o momento, positivas para duas delas, mas com evolução lenta, com manifestações clínicas muito discretas e pobres em parasitos. Pelos dados disponíveis até o momento, parece tratar-se de cepas filiáveis à raça "lenta", à qual se atribui papel na etiologia da forma cutaneo-mucosa da leishmaniose.An endemic area of cutaneous leishmaniasis in the State of S. Paulo, Brazil, is described. Clinical aspects of human cases showed few lesions with slow evolution and few parasites. From investigations on natural infections of local sylvatic mammals by skin cultures technique ensued three strains isolations from Akodon arviculoides and Oryzomys nigripes rodents. Two of these showed to infect hamsters experimentally, but with discrete cutaneous manifestations and few parasites. This aspect seems to be alike the behaviour of "slow" strain, who was included in the possibility of the mucocutaneous leishmaniasis etiology. The presence of sylvatic enzootic forms of the disease is concluded.

  10. Masticatory (;superfast') myosin heavy chain and embryonic/atrial myosin light chain 1 in rodent jaw-closing muscles.

    Science.gov (United States)

    Reiser, Peter J; Bicer, Sabahattin; Chen, Qun; Zhu, Ling; Quan, Ning

    2009-08-01

    Masticatory myosin is widely expressed among several vertebrate classes. Generally, the expression of masticatory myosin has been associated with high bite force for a carnivorous feeding style (including capturing/restraining live prey), breaking down tough plant material and defensive biting in different species. Masticatory myosin expression in the largest mammalian order, Rodentia, has not been reported. Several members of Rodentia consume large numbers of tree nuts that are encased in very hard shells, presumably requiring large forces to access the nutmeat. We, therefore, tested whether some rodent species express masticatory myosin in jaw-closing muscles. Myosin isoform expression in six Sciuridae species was examined, using protein gel electrophoresis, immunoblotting, mass spectrometry and RNA analysis. The results indicate that masticatory myosin is expressed in some Sciuridae species but not in other closely related species with similar diets but having different nut-opening strategies. We also discovered that the myosin light chain 1 isoform associated with masticatory myosin heavy chain, in the same four Sciuridae species, is the embryonic/atrial isoform. We conclude that rodent speciation did not completely eliminate masticatory myosin and that its persistent expression in some rodent species might be related to not only diet but also to feeding style. PMID:19648394

  11. In vivo transmission of 'candidatus Phytoplasma ulmi' by Amplicephalus curtulus (Hemiptera: Cicadellidae) and its effect on ryegrass (Lolium multiflorum cv. tama).

    Science.gov (United States)

    Arismendi, N L; Riegel, R; Carrillo, R

    2014-02-01

    In Chile, phytoplasmas have been reported in sugar beet, grapevine, peony, and Chilean shrubs. 'Candidatus Phytoplasma ulmi' have been detected in plants of Ugni molinae Turczanínow (Myrtaceae) and the leafhopper Amplicephalus curtulus Linnavuori & DeLong. We evaluated the possibility of phytoplasma transmission from native plants to grasses by A. curtulus and the possible effect on the plant hosts. Newly emerged adults were placed in cages with phytoplasma-infected U. molinae for 72 h (acquisition access period). These plants were then replaced by healthy ryegrasses for 20 d (latent period). They were again replaced for other healthy ryegrasses and were place in cages for 14, 7, and 1 d (inoculation access period [IAP]). After IAP, these plants were moved into different insect-free cages for 30 d, after which polymerase chain reaction (PCR) analyses were carried out. Phytoplasma-free insects on ryegrasses were considered as control treatments. Furthermore, plant height and leaf area were recorded for all treatments. After PCR, 46, 60, and 13% of the plants exposed to infected A. curtulus by 14, 7, and 1 d of IAP, respectively, were infected with 'Ca. Phytoplasma ulmi'. Similarly, plants exposed to an IAP of 14, 7, and 1 d with phytoplasma-infected leafhoppers showed a reduction in plant height of 19, 39, and 28% and leaf area of 302, 169, and 55%, respectively, in comparison to those exposed to phytoplasma-free leafhoppers. We showed that A. curtulus has the ability to transmit phytoplasma from U. molinae to ryegrasses, affecting ryegrass plant height and leaf area PMID:24665688

  12. De la capa al agujero: los descuidos de la ciencia

    OpenAIRE

    Orozco-Martínez, Carlos E.

    1997-01-01

    Diez años después de la firma del Protocolo de Montreal para regular el uso de sustancias nocivas para la capa de ozono, firmado por 24 países en 1987, se reseñan algunos inventos tecnológicos que si bien hacen la vida cotidiana más cómoda, continúan ocasionando daños a la capa de ozono. Asimismo, se presentan las batallas libradas hasta entonces por los científicos Mario Molina y Sherwood Rowland para que se reconocieran los efectos dañinos de los clorofluorocarbonos. Se incluye la reproducc...

  13. Los humos del mercedario: el postre americano de 'La villana de Vallecas'

    OpenAIRE

    García-Santo-Tomás, E. (Enrique)

    2010-01-01

    El estudio de cómo se representan en las obras áureas algunos objetos de la vida cotidiana, como el tabaco, avanza la comprensión de las mismas, como es el caso de 'La villana de Vallecas', de Tirso de Molina. Utilizando la dicha comedia y fuentes tratadísticas de la época, este artículo muestra que el tabaco –como el chocolate– fue objeto de la fascinación del mercedario, que vio en él un ambiguo símbolo del Nuevo Mundo, del consumismo avant la lettre y de la sensualidad. The study ...

  14. Conocimiento y aplicación de los principios éticos y deontológicos por parte de los psicólogos forenses expertos en el ámbito de familia

    OpenAIRE

    Molina Bartumeus, Asunción

    2011-01-01

    [spa] Existe un aumento de requerimientos de intervención de los psicólogos forenses en procedimientos de familia y es reconocida la existencia de numerosas denuncias ante las comisiones deontológicas derivadas de dichas intervenciones (Del Río, 2000; Cayuela, Jarne y Molina, 2.005). No obstante, la investigación hasta el momento sobre la práctica profesional ética en este área concreta de la psicología es escasa. Este trabajo tiene como objetivo principal el análisis del nivel de conocim...

  15. Reseñas de Libros

    OpenAIRE

    José Francisco Tinao Martín-Peña; José Luis Gutiérrez Molina; David Molina Rabadán; Alejandro Román Antequera; Jesús Fernández García; Roberto Germán Fandiño Pérez; Rafael Gómez Sánchez; Julio Pérez Serrano; Leonardo Mazzei de Grazia; Joaquín Piñeiro Blanca

    2008-01-01

    Chomsky, Noam, Poder y Terror. Reflexiones posteriores al 11/09/2001. Barcelona, RBA, 2003, 155 pp.Páginas 133-135José Francisco Tinao Martín-PeñaCobo Romero, Francisco, Conflicto rural y violencia política. Jaén, Universidad de Jaén-Universidad de Granada, 1998, 381 pp.Páginas 135-137José Luis Gutiérrez MolinaColacrai, Miryam (ed.), Relaciones Internacionales. Viejos temas, nuevos debates. Rosario, Centro de Estudios en Relaciones Internacionales de Rosario, 2001, 203 pp.Páginas 137-141David...

  16. On creating mass/matter by extra dimensions in the Einstein-Gauss-Bonnet gravity

    OpenAIRE

    Petrov, A. N.

    2009-01-01

    Kaluza-Klein (KK) black hole solutions in the Einstein-Gauss-Bonnet (EGB) gravity in $D$ dimensions obtained in the current series of the works by Maeda, Dadhich and Molina are examined. Interpreting their solutions, the authors claim that the mass/matter is created by the extra dimensions. To support this claim, one needs to show that such objects have classically defined masses. We calculate the mass and mass flux for 3D KK black holes in 6D EGB gravity whose properties are sufficiently phy...

  17. Experiences in WWTP of the effects of co-digestion of substrates on the biogas production; Experiencia en EDAR de la codigestion de sustratos sobre la produccion de biogas

    Energy Technology Data Exchange (ETDEWEB)

    Morenilla, J. J.; Bernacer, I.; Martinez, F.; Jardin, C.; Simon, P.; Ruiz, L.; Pradas, P.; Pastor, L.

    2010-07-01

    The use of co-digestion in wastewater treatment plants (WWTP) offers the possibility of treating sludge in conjunction with other substrates from different sources (agricultural or agroindustrial residues, etc.)to offset the balance of nutrients and moisture, increasing significantly biogas production of the process. Pobla de Farnals (Valencia) WWTP and Molina de Segura (Murcia) WWTP have introduced landfill leachate of municipal solid waste (MSW) in the anaerobic digestion, resulting in an increase of the biogas production. the additions started with punctual discharges of small amounts of leachate, and later, the frequency and volume of the discharges increased depending on the results. (Author) 17 refs.

  18. ¿Y por qué no quedarse en Laraos?

    OpenAIRE

    Brougère, Anne-Marie

    2015-01-01

    El Instituto Francés de Estudios Andinos es un organismo de investigación cientifica en cooperación. Es asi que los resultados que nos presenta Anne- Marie Brougère se inscriben en el marco de un proyecto de investigación, conducido conjuntamente con la Universidad Nacional Agraria La Molina entre 1983 y 1986, sobre el estudio de las politicas agrarias de cuatro comunidades del valle del Río Cañete ubicadas en alturas diferentes, desde el nivel del mar hasta 3600 m. Este proyecto multidiscipl...

  19. Energía solar térmica y fotovoltaica aislada para pequeñas comunidades en Perú

    OpenAIRE

    Piriz Sagahon, Imanol Yalli Atahualpa

    2013-01-01

    El desarrollo de este proyecto se hizo gracias al apoyo económico del Centro de Cooperación al Desarrollo (CCD) y del Programa de Educación en Ciencia y Tecnología del Agua para la Población Infanto-juvenil de Perú PCIAECID (A1-035941-11). El apoyo en logística e instalaciones por parte del Departamento de Ordenamiento Territorial y Desarrollo Sostenible de la Universidad Nacional Agraria La Molina. El presente trabajo final de master esta orientado al diseño y la implement...

  20. Enchancemnt of the optical power stimulated by impact ionization in GaSb-based heterostructures with deep quantum wells

    Czech Academy of Sciences Publication Activity Database

    Mikhailova, M.; Zegrya, G.; Danilov, L.; Ivanov, E.; Kalinina, K.; Stoyanov, N.; Salikhov, Kh.; Yakovlev, Yu.; Hulicius, Eduard; Hospodková, Alice; Pangrác, Jiří; Zíková, Markéta

    Vol. 8781. BELLINGHAM: SPIE, 2013 - (Cheben, P.; Čtyroký, P.; MolinaFernandez, I.), s. 1-9 ISBN 978-0-8194-9583-9. ISSN 0277-786X. [Conference on Integrated Optics - Physics and Simulations. Prague (CZ), 17.04.2013-18.04.2013] R&D Projects: GA ČR GA13-15286S Institutional support: RVO:68378271 Keywords : quantum wells * ionization * interfaces * lasers * LED * Mid-IR * quantum efficiency * MOVPE Subject RIV: BM - Solid Matter Physics ; Magnetism http://dx.doi.org/10.1117/12.2017124

  1. Reseñas de Libros

    OpenAIRE

    Joaquín Piñeiro Blanca; Francisco de Paula Villatoro Sánchez; David Molina Rabadán; Daniel Alcalde Güelfo; Daniel Francisco Álvarez Espinosa; Mª del Rocío Piñeiro Álvarez; Manuel Baraja Escudero; José Joaquín Fernández Alles; Gema León Ravina

    2009-01-01

    Álvarez Rey, Leandro (Estudio preliminar, recopilación y edición), Diego Martínez Barrio. Palabra de republicano. Sevilla, Ayuntamiento de Sevilla-Instituto de la Cultura y las Artes, 2007, 1.046 pp.Páginas 177-179Joaquín Piñeiro BlancaBancalari Molina, Alejandro, Orbe romano e Imperio Global. La romanización desde Augusto a Caracalla. Santiago de Chile, Editorial Universitaria, 2007, 330 pp.Páginas 179-182Francisco de Paula Villatoro SánchezBernal-Meza, Raúl y Saha, Suranjit (comps.), Econom...

  2. El Surrealismo vergonzante (tres poetas peruanos)*

    OpenAIRE

    Cisneros, Antonio

    2014-01-01

    En el ámbito de América Latina el Perú tiene una poderosa poesía de vanguardia. Sin olvidar, por supuesto, a los mexicanos del grupo Contemporáneos o a su poeta precursor Tablada. (Ni al grupo veracruzano de los Estridentistas). Sin olvidar a los cubanos de Orígenes, quiero decir, sin olvidar a Lezama Lima. Ni a los argentinos Oliverio Girondo y Enrique Molina. Ni a las aves solitarias de Nicaragua, José Coronel Urtecho, o Vicente Huidobro de Chile. Ni a los extraordinarios modernistas brasil...

  3. Instalación del cultivo de papa en las parcelas experimentales, una a nivel comunal (aynokas) y otra a nivel individual

    OpenAIRE

    Universidad Nacional Agraria La Molina. Instituto de la Pequeña Producción Sustentable

    2008-01-01

    El presente documento contiene el desarrollo DE LA INSTALACIÓN del cultivo de papa en en dos sistemas de manejo el primero esta en un manejo colectivo (aynokas) y el segundo esta en un manejo individual estos experimentos estan instaladas en la Comunidad Campesina de Santa María, trabajo trabajo que fue realizado por el equipo del Instituto de la Pequeña Producción Sustentable ¿ IPPS de la Universidad Nacional Agraria La Molina - UNALM, en el marco del desarrollo del proyecto: ¿Desarrollo de ...

  4. V Actas Congreso. Poder, poderes y empoderamiento… ¿Y el amor? ¡Ah, el amor!

    OpenAIRE

    Gil Gómez, Alicia; Escrig Gil, Gemma; Forcada Martínez, Águeda

    2009-01-01

    ÍNDICE: Presentación,BEATRIZ MOLINA GABRIEL Y GALÁN. I. CONFERENCIAS. ¿Es la explotación sólo algo malo o… qué tipo de poder es el poder del amor?,ANNA JÓNASDÓTTIR. Una experiencia en el poder ,SOLEDAD MURILLO DE LA VEGA. II. MESAS REDONDAS. MESA 1. Sentimientos, educación, amor y sexo Del mito del amor romántico a la construcción de relaciones amorosas entre iguales: una mirada feminista ,NIEVES SIMÓN RODRÍGUEZ. El cuerpo en la educación afectivo-sexual ,MATILDE FO...

  5. De El burlador de Tirso al Don Juan de Molière. Estudio Comparativo de Fuentes Textuales

    OpenAIRE

    Ortiz Rosado, Irene

    2014-01-01

    He querido reflejar en este trabajo las fuentes o influencias folklóricas, literarias y de ciertos personajes nobles de la sociedad de la época, tanto de El burlador de Tirso de Molina como de Don Juan de Molière, además de realizar un estudio comparativo de ambas obras para analizar los elementos de convergencia o de desunión en una y otra comedia. De forma exhaustiva, he querido mostrar prácticamente todo lo que han escrito sobre el tema de don Juan expertos como Menéndez Pidal, Márquez ...

  6. Re-Gendering the Lbertine; or, The Taming of the Rake: Lucy Vestris as Don Giovanni on the Early Nineteenth-Century London Stage

    OpenAIRE

    Cowgill, Rachel

    1998-01-01

    When Luigi Bassi entered the stage of the Prague National Theatre in 1787 to create the title role of Mozart and Da Ponte's Don Giovanni, he could have drawn inspiration from a rich tradition of theatrical, pantomimic and marionette representations of the legendary Don Juan, to which this new opera was the latest contribution. Previous incarnations had been shaped by the likes of Tirso de Molina, Molière, Shadwell, Purcell and Gluck; yet it is Mozart and Da Ponte's version that has for us bec...

  7. Canci??n espa??ola e identidad nacional en la Espa??a franquista: Manolo Escobar

    OpenAIRE

    Otaola Gonz??lez, Paloma

    2015-01-01

    Es bien conocido el gusto de Franco por la copla y la canci??n espa??ola que contribu??a a reforzar el sentimiento nacional espa??ol. Cada a??o, en la conmemoraci??n del 18 de Julio, las estrellas del momento como Conchita Piquer, Juanita Reina, Lola Flores, Antonio Amaya, Antonio Molina etc. eran invitadas a interpretar las canciones favoritas del General??simo. Entre los int??rpretes de la canci??n espa??ola, Manolo Escobar fue uno de los m??s populares en los a??os 60 y 7...

  8. Pioneers in ozone research receive Nobel Prize in chemistry

    Science.gov (United States)

    The Royal Swedish Academy of Sciences has awarded its 1995 Nobel Prize in chemistry to three AGU members for their work in atmospheric chemistry, particularly concerning the formation and decomposition of ozone. Only one other Nobel prize has ever been awarded in the realm of atmospheric research. The honorees are professors Paul Crutzen of the Max-Planck Institute for Chemistry in Mainz, Germany; Mario Molina of the Massachusetts Institute of Technology; and F. Sherwood Rowland of the University of California, Irvine. The Academy credits the three with contributing to “our salvation from a global environmental problem that could have catastrophic consequences.”

  9. Generación de banco de propagación de bambú- guadua en zonas áridas de la costa peruana regado con distintos tipos de agua

    OpenAIRE

    Ruiz Rodríguez, Juan Gabriel

    2013-01-01

    El presente trabajo es un proyecto de investigación experimental que se ha realizado en la facultad de Ingeniería Agrícola de La Universidad Nacional Agraria La Molina, Lima, Perú. Se basa en el aprovechamiento de diferentes tipos de agua, a las que se les aplican diversas tecnologías sostenibles de tratamientos de agua, tal como sistemas de humedales construidos de flujo horizontal y reservorios. El reúso de estos cuerpos de agua se utiliza para la generación de un banco de pr...

  10. Reinventing Democracy in Bolivia and Latin America

    OpenAIRE

    2008-01-01

    – Citizenship in Latin America, by Joseph S. Tulchin and Meg Ruthenburg (eds). Boulder/London: Lynne Rienner, 2006. – Participación política, democracia y movimientos indígenas en los Andes, by Jorge León, et al. La Paz, Lima: PIEB / IFEA / Embajada de Francia en Bolivia, 2005. – El estado del Estado en Bolivia – Informe Nacional sobre Desarrollo Humano 2007, coordinación general George Gray Molina. UNDP / PNUD, Bolivia, 2007. – El Estado de la opinión: los bolivianos, la Constitución y la Co...

  11. Informe de calidad y datos de producción científica (2003-2009)en Nanociencia y Nanotecnología, Nuevos Materiales y Nuevos Procesos Industriales

    OpenAIRE

    de Moya-Anegón, Félix; Chinchilla-Rodríguez, Zaida; Corera-Álvarez, Elena; González-Molina, Antonio; López-Illescas, Carmen; Vargas-Quesada, Benjamín

    2012-01-01

    Moya-Anegón, F. (dir.), Chinchilla-Rodríguez, Z. (coord.), Corera-Álvarez, E., González-Molina, A., López-Illescas, C., Vargas-Quesada, B. Informe de calidad y datos de producción científica (2003-2009)en Nanociencia y Nanotecnología, Nuevos Materiales y Nuevos Procesos Industriales. Madrid: Fundación Española para la Ciencia y la Tecnología, 2012. NIPO: 720-12-041-0

  12. Estratigrafía del Pérmico y Triásico en el sector central de la rama castellana de la Cordillera Ibérica.

    Directory of Open Access Journals (Sweden)

    Pérez-Arlucea, M.

    1985-08-01

    Full Text Available The main Permian and Triassic sequence in Molina de Aragón and South Albarracín is established. More than 45 sections have been studied, analysing the lateral changes and establishing 16 lithoestratigraphic Units. Part of these 1ithoestraigraphic Units were originally established by Ramos (1979 in the Molina de Aragon area, but this study prove that they can be followed to our arca. .
    The description, main characteristics, lateral changes and extension of each lithoestratigraphic Units are established here. .
    The paleogeography of this area with a large high located in the half north of Albarracín Sierra, is discussed here. That high was related with the tectonic movements contemporaneous to sedimentation during Upper Permian and Triassic.

    Se establece la sucesión estratigráfica tipo del Pérmico y Triásico de la región comprendida entre Molina de Aragón y el sur de Albarracín. Sobro la base do más de 45 columnas estratigráficas levantadas y del análisis de las variaciones que presentan los distintos tramos litológicos de que se compone la serie, se establecen 16 unidades litoestratigráficas, Aunque una parte de estas unidades fueron definidas originalmente en otros sectores de la Cordillera Ibérica, el estudio realizado demuestra que son también válidas en este área. Es el caso de las unidades definidas para parte del Pérmico y para las facies Buntsandstein por Ramos (1979, al oeste de Molina de Aragón.
    Se describen y analizan las principales características de cada una de las unidades litoestratigráficas establecidas. así como sus variaciones laterales y extensión superficial. .
    Por último, se discuten las implicaciones paleogeográficas que tuvo la existencia de un importante umbral situado en la mitad norte de la Sierra de Albarracín, Y se relaciona su presencia con la actividad tectónica contemporánea de la sedimentación del Pérmico superior y del Triásico.

  13. John Punch, Scotist Holy War, and the Irish Catholic Revolutionary Tradition in the Seventeenth Century.

    Science.gov (United States)

    Campbell, Ian W

    2016-07-01

    During the 1640s, the Irish Franciscan theologian John Punch taught his theology students in Rome that war against Protestants was made just by their religion alone. Jesuits like Luis de Molina identified the holy war tradition in which Punch stood as a Scotist one, and insisted that the Scotists had confused the natural and supernatural spheres. Among Irishmen, Punch was unusual. The main Irish Catholic revolutionary tradition employed Jesuit and Thomist theory. They argued that the Stuarts had lost the right to rule Ireland for natural reasons, not supernatural ones; because the Stuarts were tyrants, not because they were Protestants. PMID:27477343

  14. Temporal evolution of adherents of the major religions in Mexico: Avrami model application-Kolgomorov solid training

    CERN Document Server

    Avilés, Mauricio González

    2013-01-01

    It applies a mathematical model of solid formation, the model of Avrami-Kolgomorov [Ausloos & Petroni, 2007] to model the time evolution of percentage of adherents of the major religions practiced in Mexico, adjusting the corresponding parameters with available records in the period from 1950 to 2000 [Molina-Hernandez, 2003; INEGI, 2005]. A comparison is made with the application of the model to global trends and concludes that Catholicism is in a marked disaggregation and trends of Christianity in Mexico are similar to global.

  15. Diferencias en el perfil psicológico y en la conducta alimentaria de madres de mujeres con y sin trastornos alimentarios /

    OpenAIRE

    Vazquez Velazquez, Veronica

    2012-01-01

     tesis que para obtener el grado de Doctorado en Psicología, presenta Verónica Vázquez Velázquez ; tutores principales de tesis Lucy María Reidl Martínez, Gilda Libia Gómez Pérez Mitré, Juan Pablo Méndez Blanco, Martha Kaufer Horwitz, Teresita de Jesús Saucedo Molina177 páginas : ilustracionesDoctorado en Psicología Universidad Nacional Autónoma de México, 2012 Programa de Posgrado en Psicología

  16. Agresividad escolar y resolución de conflictos en los centros de Educación Secundaria en la Comunidad Autónoma de Murcia

    OpenAIRE

    Sánchez-López, Natalia

    2012-01-01

    La presente investigación tiene como propósito realizar una breve aproximación conceptual sobre la agresividad escolar en cinco centros educativos de Educación Secundaria Obligatoria de la Región de Murcia. Estos centros están ubicados en diferentes poblaciones: Abanilla, Bullas, Molina de Segura, Murcia capital y Yecla. Para ello, se ha analizado la frecuencia con que se presentan agresiones en estos centros, el sexo del agresor, el escenario y las formas de agresión más frecuentes y las ...

  17. Vertical zonality of fractionated granite plutons reflected in zircon chemistry

    Czech Academy of Sciences Publication Activity Database

    Breiter, Karel

    s. l : Universidad d Salamanca ; Escuela politécnica superior de Avila ; Universidad de Granada, 2011 - (Molina, J.; Scarrow, J.; Bea, F.; Montero, P.). s. 25-25 ISBN 978-84-694-5253-0. [Hutton Symposium on Granites and Related Rocks /7./. 04.07.2011-09.07.2011, Avila] Institutional research plan: CEZ:AV0Z30130516 Keywords : zircon * granite geochemistry * granite zonality * Cínovec * Beauvoir Subject RIV: DB - Geology ; Mineralogy http://www.seventh-hutton.org/meeting/Abstracts,_posters,_Lithos_Special_Issue_files/abstracts_book_Hutton_ISBN.pdf

  18. De vuelta sobre la seducción en los libros de caballerías. Con especial atención a la figura masculina y el ‘donjuanismo’

    OpenAIRE

    Aguilar Perdomo, María del Rosario

    2012-01-01

    Este artículo aborda el motivo del caballero seductor y mujeriego, antecedente del Don Juan de Tirso de Molina, que corresponde en el catálogo de Stith Thompson al motivo T10.4 (G), “Man continually falling in love”. Se hace una revisión de los herederos de Gauvain artúrico en los libros de caballerías castellanos, con especial atención a Galaor en el Amadís de Gaula, Rogel de Grecia del Florisel de Niquea y Floriano del Desierto del Palmerín de Inglaterra para descubrir los ra...

  19. El suelo, un sistema organizado que sustenta la vida terrestre, una propuesta de aula para ciclo I

    OpenAIRE

    Ramírez Mora, Yenny Patricia

    2012-01-01

    El siguiente trabajo tiene como objetivo diseñar una propuesta de aula donde se integren conceptualmente la estructura, y los procesos: físicos, químicos, biológicos y sociales, que inciden en el desarrollo y protección del suelo, con el fin de lograr un aprendizaje significativo, el desarrollo de habilidades de pensamiento y una conciencia del cuidado de éste en los estudiantes del ciclo I, del colegio Gerardo Molina Ramírez IED. Se realizó una prueba diagnóstica con el fin de identificar la...

  20. Understanding the crisis in Spain: An unhealthy political environment or a plain vanilla recession?

    OpenAIRE

    Winther, Jens

    2014-01-01

    The aim of my thesis is to examine the crisis in Spain and to consider whether an unhealthy political environment and the existence of an extractive political class can explain the crisis, or whether the situation in the country should be understood merely as a temporary economic crisis. To do so I investigate and discuss the causes to the crisis and test the assumptions and propositions in César Molinas’ theory of the political class in Spain. Molinas argues that the Spanish politicians do n...