X-cell pseudotumors in a hardhead catfish Arius fells (Ariidae) from Lake Pontchartrain, Louisiana, USA

Abstract

X-cell epidermal lesions are described from a single specimen of the hardhead catfish Arius felis (Ariidae). The lesions exhibited an unusual growth pattern but did not involve any visceral organs. Histologically, the lesions resembled those previously described for coldwater fishes. This is the first report of X-cell lesions from Lake Pontchartrain, Louisiana, USA, and the hardhead catfish represents the first warmwater species affected with the disease. PU - INTER-RESEARCH PI - OLDENDORF LUHE PA - NORDBUNTE 23, D-21385 OLDENDORF LUHE, GERMANY