Journal of the Marine Biological Association of India

Volume 30 Issue 1&2

Biology of Stolephorus devisi (whitley) from Mangalore area, Dakshina kannada

G. Syda Rao

The growth parameters of Stolephorus devisi are estimated by Gulland and Holt Plot as Loo 113 mm, K 0.0056/da> and to a-36 days. The species reaches 101 mm total length at the end of one year. The length-weight relationship is found to be) v=0.00000 625 L3.0103 The species attains first maturity at a length of 62 mm. The major spawning is from October to February. Juveniles are found from February to May. Fecundity estimates are correlated to the length of the fish. A steep fall in relative condition (Kn) at 62 mm coincides with the length at first maturity. The low Kn values beyond the length at first maturity appear to be due to protracted spawning season of this species.

Date : 31-12-1988