Dermatophytosis in farmed mink (Mustela vison) caused by Trichophyton equinum.

J Vet Diagn Invest

Departments of Pathology and Microbiology (Overy, Marron-Lopez, Muckle, Bourque, Lopez) and Chemistry (Overy), Atlantic Veterinary College, University of Prince Edward Island, Prince Edward Island, CanadaDiagnostic Services (Muckle, Bourque, Lund), Atlantic Veterinary College, University of Prince Edward Island, Prince Edward Island, CanadaNautilus Biosciences Canada Inc., Duffy Research Center, Charlottetown, Prince Edward Island, Canada (Overy)Middleton Veterinary Services, Middleton, Nova Scotia, Canada (MacHattie).

Published: September 2015

This report details 2 outbreaks of dermatophytosis in 2 different mink ranches. On the first farm, only kits were affected, while on the second farm, small numbers of adults were infected. Affected mink were otherwise clinically healthy and in good body condition. Three animals were euthanized and submitted for autopsy. Grossly, mink exhibited locally extensive to coalescing areas of crusting alopecia but no other significant gross lesions in internal organs. Microscopically, skin lesions were characterized by chronic hyperplastic dermatitis with folliculitis, furunculosis, occasional intracorneal pustules, and large numbers of intrafollicular fungal arthrospores and hyphae. The dermatophyte was cultured and identified as Trichophyton equinum based on molecular barcoding of the internal transcribed spacer region of the ribosomal DNA gene.

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http://dx.doi.org/10.1177/1040638715596036DOI Listing

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