Title
Herpesvirus-associated papillomas in koi carp (Cyprinus carpio)
Author(s)
Calle P.P., McNamara T., Kress Y.
Published
1999
Publisher
Journal of Zoo and Wildlife Medicine
Abstract
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 (?2 text, P > 0.95). Lesions typically resolved spontaneously in 1-3 wk, occasionally persisted for >3 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. Copyright 1999 by American Association of Zoo Veterinarians.
Keywords
animal; animal disease; article; carp; electron microscopy; fish disease; Herpes virus; Herpes virus infection; isolation and purification; papilloma; skin tumor; ultrastructure; virion; virology; virus infection; Animals; Carps; Fish Diseases; Herpesviridae; Herpesviridae Infections; Microscopy, Electron; Papilloma; Skin Neoplasms; Tumor Virus Infections; Virion
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PUB12813