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Athukorala A, Lacasse C, Curtiss JB, Phalen DN, Sarker S. Characterisation of a novel aviadenovirus associated with disease in tawny frogmouths (Podargus strigoides). Virology 2023; 588:109904. [PMID: 37856912 DOI: 10.1016/j.virol.2023.109904] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/01/2023] [Revised: 09/28/2023] [Accepted: 10/02/2023] [Indexed: 10/21/2023]
Abstract
Aviadenoviruses are widespread in wild birds but rarely cause disease in nature. However, when naïve species are exposed to poultry or aviaries, aviadenoviruses can lead to disease outbreaks. This study characterised a novel aviadenovirus infection in a native Australian bird, the tawny frogmouth (Podargus strigoides) during an outbreak investigation. The identified complete genome of aviadenovirus, named tawny frogmouth aviadenovirus A (TwAviAdV-A) was 41,175 bp in length containing 52 putative genes. TwAviAdV-A exhibits the common aviadenovirus genomic organisation but with a notable monophyletic subclade in the phylogeny. The TwAviAdV-A virus was hepatotrophic and the six frogmouths presented to the wildlife hospitals in South Eastern Queensland most commonly exhibited regurgitation (in four frogmouths). Three were died or euthanized, two recovered, and one showed no signs. The detection of TwAviAdV-A in frogmouths coming into care re-emphasizes the need for strict biosecurity protocols in wildlife hospitals and care facilities.
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Affiliation(s)
- Ajani Athukorala
- Department of Microbiology, Anatomy, Physiology, And Pharmacology, School of Agriculture, Biomedicine and Environment, La Trobe University, Melbourne, VIC, 3086, Australia.
| | - Claude Lacasse
- RSPCA Queensland, 139 Wacol Station Road, Wacol, Queensland, 4076, Australia.
| | - Jeffrey B Curtiss
- IDEXX Laboratories, 3 Overend Street, East Brisbane, Queensland, 4169, Australia.
| | - David N Phalen
- Sydney School of Veterinary Science, University of Sydney, Camden, New South Wales, Australia; Schubot Exotic Bird Health, Texas A&M College of Veterinary Medicine and Biomedical Sciences, College Station, TX, 77843-4467, USA.
| | - Subir Sarker
- Department of Microbiology, Anatomy, Physiology, And Pharmacology, School of Agriculture, Biomedicine and Environment, La Trobe University, Melbourne, VIC, 3086, Australia; Biomedical Sciences & Molecular Biology, College of Public Health, Medical and Veterinary Sciences, James Cook University, Townsville, QLD 4811, Australia.
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