Histopathology of Tilapia tissues harbouring Clinostomum tilapiae parasites

Abstract

Tissues obtained from infected Oreochromis niloticus were processedsectioned and stained with haemotoxylin and eosin. Good sections wereselected, studied and photographed. The histopathology revealed aproliferation of eosinophiles at the secondary lamellar of the gills. Thesite of attachment on the fish skin showed the cyst to be double walled,the metacercariea is suspected to produce this cyct as a form ofdefensive mechanism to wall off and prevent dislodgement. Othertissues did not show observable lesions.(Afr. J. Biomed. Res. 11: 115 - 118 )Key words: - Oreochromis niloticus, infection, Clinostonum tilapiae, histopathology