Beak and feather disease virus carriage by Knemidocoptes pilae in a sulphur-crested cockatoo (Cacatua galerita)

T Portas, Bethany Jackson, Shubhagata Das, Shokoofeh Shamsi, Shane Raidal

Research output: Contribution to journalArticle

2 Citations (Scopus)

Abstract

This paper describes the pathology associated with psittacine beak and feather disease in a wild sulphur-crested cockatoo with concurrent knemidocoptic mange, cestodiasis and mycotic encephalitis. Methods & Results Large numbers of Knemidocoptes pilae Lavoipierre and Griffiths, 1951 (Acari: Epidermoptidae, Knemido-koptinae) were identified in affected skin associated with enhanced expression of beak and feather disease virus (BFDV) determined by immunohistochemistry. Also, BFDV antigen was demonstrated in high concentration in the gut and faecal sacs of mites, raising the possibility of ectoparasites as fomites and vectors of BFDV transmission. Large numbers of Raillietina spp. cestodes were present in the intestines. Within the brain there was a focally extensive region of necrosis and inflammation associated with branching, septate, pigmented hyphae consistent with zygomycete fungal infection. Conclusion This case highlights the potential immunosuppressive effects of BFDV infection and its potential as a keystone pathogen in the Australian environment.
Original languageEnglish
Pages (from-to)486-489
Number of pages4
JournalAustralian Veterinary Journal
Volume95
Issue number12
Early online dateNov 2017
DOIs
Publication statusPublished - Dec 2017

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