Publications by authors named "Severino Mendes de Azevedo Junior"
Article Synopsis
- - Bats are known to carry various viruses, including different types of adenoviruses, with ten species of bat adenoviruses (BtAdV A to J) identified globally.
- - In Brazil, a study collected swabs from 208 bats across three states to detect and analyze the genetic diversity of BtAdVs in the Atlantic Forest, finding a 7.7% detection rate among multiple bat species.
- - The phylogenetic analysis revealed high genetic diversity and identified eleven new potential species of BtAdV (BtAdV K to U), contributing valuable information to the understanding and monitoring of adenoviruses in this region.
Coronaviruses are single-stranded positive-sense RNA viruses associated with important avian diseases. Their relatively high rates of mutation and recombination frequencies allow them to adapt to new hosts and ecological niches. Although Brazil has 18% of global avian species diversity, studies regarding the presence of avian viral diseases in wild birds in South America are scarce.
View Article and Find Full Text PDFThe occurrence of avian influenza viruses (AIV) has been extensively studied in aquatic birds in the Northern hemisphere; however, much less information is available for the South American region. In 2009-2010, we sampled 1006 wild aquatic birds (90% Charadriiformes, 9% Anseriformes, and 1% other groups) at three locations on the Brazilian Amazon coast, a region that serves as a major stop-over and wintering site along the Atlantic Americas flyway. Real-time RT-PCR identified five samples as positive; however, no AIV isolates could be obtained and Illumina sequencing did not produce gene sequences that would allow further characterization of the virus.
View Article and Find Full Text PDFBackground: West Nile virus (WNV) is an emergent pathogen that is widely distributed in North and Central America. The recent introduction in South America has focused attention on the spread of WNV across Southern American countries. The transmission network involves mosquitoes, birds, horses and humans.
View Article and Find Full Text PDFBesides its extreme climate conditions, the Caatinga (a type of tropical seasonal forest) hosts an impressive faunal and floristic biodiversity. In the last 50 years there has been a considerable increase in the number of studies in the area. Here we aimed to present a review of these studies, focusing on four main fields: vertebrate ecology, plant ecology, human ecology, and ethnobiology.
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