ULTRASTRUCTURE OF THE TEGUMENT OF THE TREMATODE GANEO-TIGRINUM PARASITIZING THE INTESTINE OF INDIAN FROGS

The surface tegument of G. tigrinum generally resembles that described for other digeneans. It contains surface tubercles and is covered wit h a glycocalyx. In the anterior region the tegument bears spines while tubular-like canals and occasional deep invaginations are present on the anteroventral surface. Two types of secretory body are present in the tegumental syncytium and produced in separate tegumental cells. Mi tochondria are present in the surface syncytium, suggesting active tra nsport occurs across the tegument in non-hibernating frogs.