Studies on the Maturation and Spawning of Channa Striata (bloch, 1793) in Ukkadam Lake, Coimbatore, Tamilnadu, India

By : M. Senguttuvan , A.A. Sivakumar

Page No: 13-23

Abstract
In the present study, C. striata was found to breed throughout the year with peaks in January and July. Individuals of C. striata seem to spawn once in a breeding season. The highest values of gonado[1]somatic index and relative condition factor were obtained during the peak spawning periods. In this species, females mature earlier than males. The ratio between size at first maturity and maximum length (Lm/Lµ) value for males (0.3345) and for females (0.3299) suggests low mortality rates. The values of Co-efficient of correlation (‘r’) between total length of fish and fecundity (0.9643), weight of the fish and fecundity (0.9704) and weight of the ovary and fecundity (0.9883) were found to be significant. In C. striata, the sex-ratio deviated from the expected 1:1 ratio during all the months except July, August and September.

Authors :
M. Senguttuvan
Dept. of Zoology, PSG College of Arts & Science, Coimbatore-641 014, India

A.A. Sivakumar
Dept. of Environmental Science, Kovai Kalaimagal College of Arts & Science, Narasipuram P.O., Coimbatore-641 109, India.