15 research outputs found
Avian influenza virus (H11N9) in migratory shorebirds wintering in the Amazon region, Brazil
Aquatic birds are the natural reservoir for avian influenza viruses (AIV). Habitats in Brazil provide stopover and wintering sites for water birds that migrate between North and South America. The current study was conducted to elucidate the possibility of the transport of influenza A viruses by birds that migrate annually between the Northern and Southern Hemispheres. In total, 556 orotracheal/cloacal swab samples were collected for influenza A virus screening using real-time RT-PCR (rRT-PCR). The influenza A virus-positive samples were subjected to viral isolation. Four samples were positive for the influenza A matrix gene by rRT-PCR. From these samples, three viruses were isolated, sequenced and characterized. All positive samples originated from a single bird species, the ruddy turnstone (Arenaria interpres), that was caught in the Amazon region at Caeté Bay, Northeast Parå, at Ilha de Canelas. To our knowledge, this is the first isolation of H11N9 in the ruddy turnstone in South America. (Résumé d'auteur
Characterization of the geographical distribution pattern of the family Limacinidae Gray, 1840 (Mollusca - Gastropoda) in the waters of Northeastern of Brazil
Second serological inquiry on migratory birds resident in Galinhos/RN for detection of West Nile Fever and other viruses
MinistĂ©rio da SaĂșde. Secretaria de VigilĂąncia em SaĂșde. BrasĂlia, DF, Brasil.MinistĂ©rio da SaĂșde. Secretaria de VigilĂąncia em SaĂșde. BrasĂlia, DF, Brasil.MinistĂ©rio da SaĂșde. Secretaria de VigilĂąncia em SaĂșde. BrasĂlia, DF, Brasil.MinistĂ©rio da Agricultura, PecuĂĄria e Abastecimento. BrasĂlia, DF, Brasil.MinistĂ©rio da Agricultura, PecuĂĄria e Abastecimento - LARA. SĂŁo Paulo, SP, Brasil.ZoolĂłgico de BrasĂlia. BrasĂlia, DF, Brasil.Universidade Federal de Pernambuco. Recife, PE, Brasil.Universidade Federal Rural de Pernambuco. Recife, PE, Brasil.Secretaria Estadual de SaĂșde. Natal, RN, Brasil.Secretaria Municipal de SaĂșde. Natal, RN, Brasil.Universidade Federal de Pernambuco. Recife, PE, Brasil.MinistĂ©rio da SaĂșde. Secretaria de VigilĂąncia em SaĂșde. Instituto Evandro Chagas. BelĂ©m, PA, Brasil.MinistĂ©rio da SaĂșde. Secretaria de VigilĂąncia em SaĂșde. Instituto Evandro Chagas. BelĂ©m, PA, Brasil.MinistĂ©rio da SaĂșde. Secretaria de VigilĂąncia em SaĂșde. Instituto Evandro Chagas. BelĂ©m, PA, Brasil
Body mass and acquisition of breeding plumage of wintering Calidris pusilla (Linnaeus) (Aves, Scolopacidae) in the coast of Pernambuco, north-eastern Brazil
MacrozooplĂąncton da Zona EconĂŽmica Exclusiva do Nordeste do Brasil (segunda expedição oceanogrĂĄfica - REVIZEE/NE II) com ĂȘnfase em Copepoda (Crustacea)
Rotifera das zonas limnética e litorùnea do reservatório de Tapacurå, Pernambuco, Brasil Rotifera from littoral and pelagic zones of Tapacurå reservoir, Pernambuco, Brazil
Os rotĂferos do reservatĂłrio de TapacurĂĄ, Pernambuco, Brasil foram estudados quanto Ă distribuição horizontal nas zonas limnĂ©tica e litorĂąnea, nos perĂodos chuvoso (agosto de 2003) e seco (janeiro de 2004). Amostras quali-quantitativas foram obtidas atravĂ©s de coletas em ritmo nictimeral nas distintas zonas do reservatĂłrio, com intervalo de seis horas, em duas profundidades. Os parĂąmetros biĂłticos riqueza, densidade, diversidade e equitabilidade foram avaliados. AnĂĄlises de similaridade e variĂąncia (ANOVA) tambĂ©m foram utilizadas. Vinte e oito espĂ©cies e duas subespĂ©cies de Rotifera foram encontradas, das quais cinco espĂ©cies sĂŁo novas ocorrĂȘncias para Pernambuco. A zona litorĂąnea apresentou maior riqueza que a limnĂ©tica em ambos ao perĂodo sazonais, com nove espĂ©cies exclusivas. As diferenças de densidade e equitabilidade entre as zonas do reservatĂłrio nĂŁo foram significativas, ao contrĂĄrio da diversidade, que apresentou-se mais elevada na zona litorĂąnea no perĂodo seco (p<0,01). A anĂĄlise de similaridade revelou homogeneidade horizontal da comunidade de Rotifera no perĂodo chuvoso, caracterizado por menores temperaturas e maior velocidade do vento, e tendĂȘncia Ă estratificação horizontal no perĂodo seco, caracterizado por temperaturas mais elevadas e menor intensidade dos ventos. A presença de macrĂłfitas propiciou caracterĂsticas peculiares na zona litorĂąnea.<br>The rotifers of TapacurĂĄ reservoir, State of Pernambuco, Brazil, were studied concerning the horizontal distribution in pelagic and littoral zones, in the rainy (August/2003) and dry seasons (January/2004). Qualitative and quantitative samples were carried out in nictimeral samplings in the different zones of the reservoir, with an interval of six hours in the two depths. Biotic parameters as richness, density, diversity and equitability were estimated. Similarity and Analysis of Variance (ANOVA) were also used. Twenty-eight species and two subspecies of Rotifer were found from which five species are considered new occurrences in State of Pernambuco. The littoral zone presented higher richness than the limnetic zone in both seasonal periods with nine exclusive species. The density and equitability differences between zones of the reservoir were not expressive in opposite to diversity that was higher in the littoral zone in the dry season (p<0.01). The similarity analysis indicated horizontal homogeneity of Rotifer community in the rainy season characterized by lower temperatures and higher wind velocity, and a tendency to horizontal stratification in the dry season characterized by higher temperatures and lower wind intensity. Presence of aquatic vegetation yielded peculiar features in the littoral zone
Phylogenetic analysis of neuraminidase of the influenza A virus.
<p>Trees were generated by PAUP 4.0b10 using the maximum likelihood algorithm with the parameters indicated by the GTR Modeltest (bootstrap values are shown for the branch points). The scale bar is shown on the bottom left. In this study, sequences that were available in public databases were used to construct the tree, and the accession numbers along with their branch data are shown.</p
Avian Influenza Virus (H11N9) in Migratory Shorebirds Wintering in the Amazon Region, Brazil
Location of sampling sites along the Brazilian coast in relation to the main migration routes and congregation sites of ruddy turnstones in North and South America.
<p>Samples were collected in Jan-May and Aug-Dec from 2006 to 2010. (map by M. Gély ©Cirad, adapted from Wings Over Wetlands UNEP-GEF Flyways Project and <a href="http://www.plosone.org/article/info:doi/10.1371/journal.pone.0110141#pone.0110141-Blanco1" target="_blank">[34]</a>.</p
Phylogenetic analysis of the hemagglutinin gene of the influenza A virus.
<p>Trees were generated by PAUP 4.0b10 using the maximum likelihood algorithm with the parameters indicated by the GTR Modeltest (bootstrap values are shown for the branch points). The scale bar is shown on the bottom left. In this study, sequences that were available in the public database were used to construct the tree, and the accession numbers along with their branch data are shown.</p