Pododermatitis in Captive and Free-Ranging Greater Flamingos (Phoenicopterus roseus)

Wyss, Fabia Simona; Schumacher, Vanessa; Gobeli, Stefanie; Hoby, Stefan; Arnaud, Antoine; Engels, Monika; Fries, Martin; Lange, Christian E.; Stoffel, Michael Hubert; Robert, Nadia (2015). Pododermatitis in Captive and Free-Ranging Greater Flamingos (Phoenicopterus roseus). Veterinary pathology, 52(6), pp. 1235-1242. American College of Veterinary Pathologists 10.1177/0300985814568359

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Pododermatitis is frequent in captive flamingos worldwide, but little is known about the associated histopathologic lesions. Involvement of a papillomavirus or herpesvirus has been suspected. Histopathologic evaluation and viral assessment of biopsies from 19 live and 10 dead captive greater flamingos were performed. Selected samples were further examined by transmission electron microscopy and immunohistochemistry. Feet from 10 dead free-ranging greater flamingos were also evaluated. The histologic appearance of lesions of flamingos of increasing age was interpreted as the progression of pododermatitis. Mild histologic lesions were seen in a 3-week-old flamingo chick with no macroscopic lesions, and these were characterized by Micrococcus-like bacteria in the stratum corneum associated with exocytosis of heterophils. The inflammation associated with these bacteria may lead to further histologic changes: irregular columnar proliferations, papillary squirting, and dyskeratosis. In more chronic lesions, hydropic degeneration of keratinocytes, epidermal hyperplasia, and dyskeratosis were seen at the epidermis, as well as proliferation of new blood vessels and increased intercellular matrix in the dermis. Papillomavirus DNA was not identified in any of the samples, while herpesvirus DNA was seen only in a few cases; therefore, these viruses were not thought to be the cause of the lesions. Poor skin health through suboptimal husbandry may weaken the epidermal barrier and predispose the skin to invasion of Micrococcus-like bacteria. Histologic lesions were identified in very young flamingos with no macroscopic lesions; this is likely to be an early stage lesion that may progress to macroscopic lesions.

Item Type:

Journal Article (Original Article)

Division/Institute:

05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP) > Institute of Animal Pathology
05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH) > Veterinary Anatomy
05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP)
05 Veterinary Medicine > Department of Clinical Research and Veterinary Public Health (DCR-VPH)
05 Veterinary Medicine > Department of Infectious Diseases and Pathobiology (DIP) > Institute of Veterinary Bacteriology
09 Interdisciplinary Units > Microscopy Imaging Center (MIC)

UniBE Contributor:

Wyss, Fabia Simona; Schumacher, Vanessa; Gobeli, Stefanie; Fries, Martin; Stoffel, Michael Hubert and Robert, Nadia

Subjects:

500 Science > 570 Life sciences; biology
500 Science > 590 Animals (Zoology)
600 Technology > 610 Medicine & health
600 Technology > 630 Agriculture

ISSN:

0300-9858

Publisher:

American College of Veterinary Pathologists

Language:

English

Submitter:

Michael Hubert Stoffel

Date Deposited:

18 Aug 2015 09:09

Last Modified:

18 Jan 2019 12:01

Publisher DOI:

10.1177/0300985814568359

PubMed ID:

25617345

BORIS DOI:

10.7892/boris.62693

URI:

https://boris.unibe.ch/id/eprint/62693

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