REPRODUCTION OF THE FRESHWATER MALE CATFISH MYSTUS CAVASIUS (HAM) IN BHADRA RESERVOIR
H.M. ASHASHREE *
DEPARTMENT OF ZOOLOGY, SAHYADRI SCIENCE COLLEGE (AUTONOMOUS), KUVEMPU UNIVERSITY, SHIVAMOGGA-577 201, INDIA
M. VENKATESHWARLU *
DEPARTMENT OF ZOOLOGY, SAHYADRI SCIENCE COLLEGE (AUTONOMOUS), KUVEMPU UNIVERSITY, SHIVAMOGGA-577 201, INDIA
H.A. SAYESWARA *
DEPARTMENT OF ZOOLOGY, SAHYADRI SCIENCE COLLEGE (AUTONOMOUS), KUVEMPU UNIVERSITY, SHIVAMOGGA-577 201, INDIA
H.M. RENUKA SWAMY *
DEPARTMENT OF ZOOLOGY, SAHYADRI SCIENCE COLLEGE (AUTONOMOUS), KUVEMPU UNIVERSITY, SHIVAMOGGA-577 201, INDIA
*Author to whom correspondence should be addressed.
Abstract
The reproductive biology of Mystus cavasius (Ham.) was studied in Bhadra Reservoir, Western Ghat, Karnataka, India. The fishes 205 males collected from fisherman bimonthly from December 2004 to December 2006. Gonadal maturation of the specimens was analyzed through macroscopic characteristics of the gonads. The peak of advanced maturation/ mature stages occurred from January to August and of spawned/ spent from August to December. The spawning of M. cavasius was identified as monsoon type.
Keywords: Gonadal maturation, spawning, male Mystus cavasius, reproduction, Bhadra reservoir, Western Ghat