Detecção de adenovírus em aves silvestres oriundas de apreensão na região sul do Brasil

Abstract

Adenoviruses belong to the Adenoviridae family and are non-enveloped, doublestranded DNA viruses. Avian adenoviruses are more virulent in species not adapted to the virus, but many infected birds can be asymptomatic and these viral agents become complicating factors for the occurrence of different diseases. Adenoviruses have already been detected in both domestic birds, causing great damage to the poultry industry and also in wild birds. 204 clocal swabs were collected from birds seized at the Wild Fauna Rehabilitation Center (NURFS-CETAS) at the Federal University of Pelotas (UFPel). These samples were subjected to molecular diagnosis for Avian Adenovirus by PCR. Molecular diagnosis demonstrated a general prevalence rate of 33.9% (70/204) of positivity being detected in the species Chauna torquata, Heterospizias meridionalis, Rupornis magnirostris, Cariama cristata, Zenaida auriculata, Fulica armillata, Gallinula melanops, Pardirallus sanguinolentus, Pardirallus maculatus, Sicalis flaveola, Cardelius cardelius, Coereba flaveola, Cyanoloxia brisonii, Furnarius figulis, Paroaria coronata, Passer domesticus, Pitangus sulphuratus, Poospiza nigrorufa, Saltarricula multicolor, Saltator similis, Sporophila caerulescens, Turdus amaurochalinus, Ardea cocoi, Tigrisoma lineatum, Ramphantos toco, Myiopsitta monachus, Asio clamator, Tyto furcata. The orders with the highest detection rates were Passeriformes with 67% (47/70) followed by Griformes 8.5% (6/70) and Strigiformes 7.1% (5/70). These results provide the first quantitative data for the presence of avian adenovirus strains in birds in the southern region of Brazil, demonstrating the circulation of this virus in many species and orders of wild birds.