Buddhadeb Manna* and Narayan Chandra Das
Department of Zoology, University of Calcutta, 35, Ballygunge
Circular Road, Calcutta - 700 019
A diurnal rhythmicity in the emergence of cercariae of Isoparorchis hypselobagri from its first intermediate host is determined. The variation was in the range of 02 to 90 per hour and exhibited variation with the host. Light and temperature were found to have a positive impact on a phenomenon. The cercarial generation, maturation and emergence were opined to began outcome of host-parasite compatibility.
Key words: Cercaria, I.hypselobagri, light, rhythmicity, temperature.