Histopathology of Tilapia tissues harbouring Clinostomum tilapiae parasites

Abstract

Tissues obtained from infected Oreochromis niloticus were processed
sectioned and stained with haemotoxylin and eosin. Good sections were
selected, studied and photographed. The histopathology revealed a
proliferation of eosinophiles at the secondary lamellar of the gills. The
site of attachment on the fish skin showed the cyst to be double walled,
the metacercariea is suspected to produce this cyct as a form of
defensive mechanism to wall off and prevent dislodgement. Other
tissues did not show observable lesions.
(Afr. J. Biomed. Res. 11: 115 - 118 )

Key words: - Oreochromis niloticus, infection, Clinostonum tilapiae, histopathology