Panjab University Research Journal [SCIENCE]

MATURITY, FECUNDITY AND SEX-RATIO OF AN ENDANGERED FISH, GOLDEN MAHSEER TOR PUTITORA (HAM.) FROM PONG RESERVOIR

ABSTRACTS OF THE PAPERS APPEARING IN VOLUME 53(2003)

M.S. Johal* and R.K. Negi
Department of Zoology, Panjab University, Chandigarh - 160 014

Abstract
Maturity, fecundity and sex-ratio of mahseer, Tor putitora (Ham.) from Pong reservoir (H.P.) has been studied. It has been observed that all stages of maturity in most of the months of year, however, the peak is in the months of May and August and five maturity stages have been identified. It was also difficult to tell a definite season of maturity. Size at first maturity has been found to be 58.6-83.6 cms. total fish length. It was also observed that the Tor putitora fish from Pong reservoir spawns in the months of May and August. The fecundity of the fish recorded was 15504.872. However, due to insufficient data, no attempts have been made to find out the relationship between total length and weight of fish and fecundity. During present studies, male : female sex-ratio calculated was 1:4.64. From this data, it is clear that in Pong reservoir, female population mahseer dominate the males.

Key words: Fecundity, maturity, Tor putitora.