Herpesvirus-associated papillomas in koi carp (Cyprinus carpio)

Autor: P P, Calle, T, McNamara, Y, Kress
Rok vydání: 1999
Předmět:
Zdroj: Journal of zoo and wildlife medicine : official publication of the American Association of Zoo Veterinarians. 30(1)
ISSN: 1042-7260
Popis: From January through November 1994, 32% (7/22) of koi carp (Cyprinus carpio) maintained in indoor aquariums developed proliferative cutaneous lesions that consisted of single to multiple 2-10-mm whitish to pink fleshy masses usually associated with fin rays. Although scaleless koi were more commonly affected (3/6) than were normally scaled koi (4/16), the difference in incidence rates was not significant (chi2 text, P0.05). Lesions typically resolved spontaneously in 1-3 wk, occasionally persisted for3 mo, and recurred in several fish after 2-5 mo. Fish were otherwise asymptomatic. Wet mount preparations from lesions were densely cellular and consisted of hyperplastic epidermal cells of normal morphology without parasites or inflammatory cells. Histologically, biopsies were consistent with papillomas and were characterized by a marked benign epidermal hyperplasia without inclusion bodies or inflammatory infiltrate. Transmission electron microscopic examination revealed intranuclear and intracytoplasmic herpesvirus virions. Virus isolation attempts were unsuccessful.
Databáze: OpenAIRE