Avian influenza virus (H11N9) in migratory shorebirds wintering in the Amazon Region, Brazil.
Jansen de Araujo,Severino Mendes de Azevedo Júnior,Nicolas Gaidet,Renata Hurtado,David Walker,Luciano M. Thomazelli,Tatiana Ometto,Marina Maria Moraes de Seixas,Roberta Cunha Matheus Rodrigues,Daniele B. Galindo,Adriana C. S. da Silva,Arlinéa M. M. Rodrigues,Leonardo L. Bomfim,Marcelo A. Mota,Maria Eduarda Larrazabal,Joaquim Olinto Branco,Patricia Pereira Serafini,Isaac Simão Neto,John Franks,Richard J. Webby,Robert G. Webster,Edison Luiz Durigon +21 more
TLDR
All positive samples originated from a single bird species, the ruddy turnstone, that was caught in the Amazon region at Caeté Bay, Northeast Pará, at Ilha de Canelas, and this is the first isolation of H11N9 in the r Buddy turnstone in South America.Abstract:
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 Caete Bay, Northeast Para, at Ilha de Canelas. To our knowledge, this is the first isolation of H11N9 in the ruddy turnstone in South America. (Resume d'auteur)read more
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An overview of migratory birds in Brazil
Marina Somenzari,Priscilla Prudente do Amaral,Víctor R. Cueto,André de Camargo Guaraldo,Alex E. Jahn,Diego Mendes Lima,Pedro Cerqueira Lima,Camile Lugarini,Caio Graco Machado,Jaime Martinez,João Luiz Xavier do Nascimento,José Fernando Pacheco,Danielle Paludo,Nêmora Pauletti Prestes,Patricia Pereira Serafini,Luís Fábio Silveira,Antonio Emanuel Barreto Alves de Sousa,Nathália Alves de Sousa,Manuella Andrade de Souza,Wallace Rodrigues Telino-Júnior,Bret M. Whitney +20 more
TL;DR: Of the 1,919 species of birds recorded in Brazil, 198 (10.3%) are migratory, and 127 (64%) were classified as Migratory and 71 (36%) as Partially Migratories, while a few species wereclassified as Vagrant and eight could not be defined due to limited information available, or due to conflicting data.
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Does Fire Trigger Seed Germination in the Neotropical Savannas? Experimental Tests with Six Cerrado Species
TL;DR: This study tested how fire by-products such as heat and smoke affect the germination of six species common to two Cerrado open physiognomies: wet grasslands and the campo sujo (grassland with scattered shrubs and dwarf trees).
Journal ArticleDOI
Trends and gaps of the scientific literature about the effects of fire on Brazilian Cerrado
Filipe Viegas de Arruda,Diego Guimarães de Sousa,Diego Guimarães de Sousa,Fabrício Barreto Teresa,Vitor Hugo Mendonça do Prado,Hélida Ferreira da Cunha,Thiago J. Izzo +6 more
TL;DR: In this paper, the authors highlight the trends in scientific literature about fire effects in the Cerrado, aiming to detect possible gaps and to indicate directions of future scientific research, and emphasize the need for investment in research in areas with high fire frequency and also for an increase in knowledge about these effects on the biota, especially on the fauna.
Journal ArticleDOI
Avian influenza in Latin America: A systematic review of serological and molecular studies from 2000-2015.
TL;DR: The findings demonstrate the limited information on AIVs in Latin America and highlight the need of more studies on Aivs at the regional level, particularly those focused on identifying the endemic subtypes in regional wild birds.
Journal ArticleDOI
Novel avian paramyxovirus (APMV-15) isolated from a migratory bird in South America.
Luciano M. Thomazelli,Jansen de Araujo,Thomas P. Fabrizio,David Walker,Dilmara Reischak,Tatiana Ometto,Carla M. Barbosa,Maria Virginia Petry,Richard J. Webby,Edison Luiz Durigon +9 more
TL;DR: Results suggest that unclassified/calidris_fuscicollis/Brazil/RS-1177/2012 is the prototype strain of a new APMV serotype, APMv-15, which is similar to previously identified APMVs serotypes.
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