Disease surveillance in wild Victorian cacatuids reveals co-infection with multiple agents and detection of novel avian viruses

Veterinary Microbiology
Michelle SutherlandS R Raidal

Abstract

Wild birds are known reservoirs of bacterial and viral pathogens, some of which have zoonotic potential. This poses a risk to both avian and human health, since spillover into domestic bird populations may occur. In Victoria, wild-caught cockatoos trapped under licence routinely enter commercial trade. The circovirus Beak and Feather Disease Virus (BFDV), herpesviruses, adenoviruses and Chlamydia psittaci have been identified as significant pathogens of parrots globally, with impacts on both aviculture and the conservation efforts of endangered species. In this study, we describe the results of surveillance for psittacid herpesviruses (PsHVs), psittacine adenovirus (PsAdV), BFDV and C. psittaci in wild cacatuids in Victoria, Australia. Samples were collected from 55 birds of four species, and tested using genus or family-wide polymerase chain reaction methods coupled with sequencing and phylogenetic analyses for detection and identification of known and novel pathogens. There were no clinically observed signs of illness in most of the live birds in this study (96.3%; n = 53). Beak and Feather Disease Virus was detected with a prevalence of 69.6% (95% CI 55.2-80.9). Low prevalences of PsHV (1.81%; 95% CI 0.3-9.6), PsAdV (1.81%; ...Continue Reading

Citations

Aug 25, 2020·Australian Veterinary Journal·R AkterC M El-Hage
Jul 1, 2020·Transboundary and Emerging Diseases·Helena S StokesAndrew T D Bennett
Nov 26, 2020·Scientific Reports·Helena S StokesAndrew T D Bennett
Jan 9, 2021·Microbiology Resource Announcements·Subir SarkerKarla J Helbig
Apr 7, 2021·Journal of Wildlife Diseases·Michelle SutherlandMichael Lierz
Aug 29, 2021·Pathogens·Helena S StokesAndrew T D Bennett

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