Cerebral and Ocular Ochroconiasis in 2 Elegant Crested Tinamou (Eudromia elegans) Chicks

Two elegant crested tinamou chicks (Eudromia elegans), aged 27 and 50 days, respectively, died following acute onset of weakness and neurologic disease. Microscopically, the cerebral hemispheres of both chicks and the optic lobes of 1 chick contained multifocal granulomatous and heterophilic inflamm...

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Bibliographic Details
Published in:Veterinary pathology 2015-07, Vol.52 (4), p.716-719
Main Authors: Ossiboff, R. J., Clancy, M. M., Terio, K. A., Conley, K. J., McAloose, D.
Format: Article
Language:English
Subjects:
Animals
Ascomycota - genetics
Ascomycota - isolation & purification
Birds
Brain - microbiology
Brain - pathology
Eye - microbiology
Eye - pathology
Fatal Outcome
Female
Inflammation - veterinary
Mycoses - microbiology
Mycoses - pathology
Mycoses - veterinary
Necrosis - veterinary
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Summary:Two elegant crested tinamou chicks (Eudromia elegans), aged 27 and 50 days, respectively, died following acute onset of weakness and neurologic disease. Microscopically, the cerebral hemispheres of both chicks and the optic lobes of 1 chick contained multifocal granulomatous and heterophilic inflammation and necrosis with intralesional pigmented, thin-walled, fungal hyphae. In 1 chick, hyphae extended along the optic nerve into the globe and were associated with severe granulomatous and heterophilic inflammation of the choroid, retina, pecten, and vitreous. In both chicks, polymerase chain reaction amplification of the fungal 28S large subunit ribosomal RNA was positive with 99% sequence identity to Ochroconis gallopava. While a well-characterized fungal infection of domestic poultry, ochroconiasis has rarely been reported in exotic avian species, and this is the first histologic characterization of ocular ochroconiasis in any avian species.
ISSN:0300-9858
1544-2217
1544-4221
DOI:10.1177/0300985814556186