Studies on reproductive biology of epinephelus diacanthus (Valenciennes, 1828) off Saurashtra region, Gujarat
RA Khileri, AY Desai, SI Yusufzai, SR lende and Joshi Arti
In the present work the overall sex ratio for E. diacanthus was 1: 2.06. Females dominated in all size classes up to 45 cm and their per cent varied from 54.55 to 76.64%, while males became dominant after 45 cm. E. diacanthus spawned throughout the year with the peak in August-December. The size at 50% of E. diacanthus matured in the population was 262 mm. Absolute fecundity of E. diacanthus ranged from 58,806 during April to 2, 24, 640 in August. The average fecundity determined for the study period of one year was 1, 25, 253. The estimated ova size of E. diacanthus ranged from 252 to 384 µm. Month wise GSI was calculated and it was found to be higher in September, October, November and December.
RA Khileri, AY Desai, SI Yusufzai, SR lende, Joshi Arti. Studies on reproductive biology of epinephelus diacanthus (Valenciennes, 1828) off Saurashtra region, Gujarat. J Entomol Zool Stud 2019;7(4):1268-1274.