PREDATORY ACTION OF A FRESH WATER FISH CHANNA STRIATUS (BL.) TOWARDS A VECTOR SNAILS, LYMNAEA ACUMINATA (LAMARCK)
RAKESH KUMAR JAUHARI *
DEPARTMENT OF ZOOLOGY, D. A. V. (PG) COLLEGE, DEHRADUN-248001, INDIA.
NISHA SRIVASTAVA *
DEPARTMENT OF ZOOLOGY, D. A. V. (PG) COLLEGE, DEHRADUN-248001, INDIA.
*Author to whom correspondence should be addressed.
Abstract
Studies have been made on the predatory behaviour of C. striatus (BI.) towards vector snail, L. acuminata (L.). It was found that fishes of 7-9 cms length consumed snails upto 9 mm length. Rate of predation of a particular size of snail increased with increase in the length of fishes and thus smaller the length of snails higher was the consumption rate.