抄録
We describe a case of ringworm in a 3-year-old female Yorkshire Terrier with a history of chronic pyoderma-like skin lesions. Fungal elements were demonstrated in direct microscopy of the skin scrapings by potassium hydroxide technique, and Trichophyton rubrum was isolated. Histopathologically, periodic acid-Schiff stained sections of the skin biopsy showed fungal hyphae and arthrospores. The isolate grew well at 25 °C on Sabouraud dextrose agar with red pigmentation, but failed to hydrolyse urea; it produced many smooth-walled and slender macroconidia and pyriform microconidia. Further, in vitro mating experiment with Arthroderma simii revealed that this canine strain belonged to “-” mating type. Detailed studies are therefore required to determine the incidence of this anthropophilic dermatophyte in various dermatological disorders of animals.
