Tilapia Pfiesteriosis

Description:

Description: Acute pfiesteriosis in tilapia (Oreochromis spp.) exposed to Pfiesteria shumwayae under laboratory conditions. (A) Normal appearance of control fish, head region. (B) Normal appearance of flank. (C) Petecchial hemorrhage over operculum after acute lethal exposure. (D) Focal erythema caudal to pectoral fin (arrowhead), loss of mucus coat, epidermis, and scales along flank (arrows). Date: October 2001. Source: "Skin Ulcers in Estuarine Fishes: A Comparative Pathological Evaluation of Wild and Laboratory-Exposed Fish", Environmental Health Perspectives Volume 109, Supplement 5, pp. 687-693. Author: Vogelbein et al. Permission (Reusing this file): Public Domain.