Reproductive performance of captive-reared Indian white shrimp, Penaeus indicus, broodstocks over two generations

Closing the complex life cycle of closed thelycum shrimp in captivity is one fundamental challenges breeding programs. In present study, we investigated sexual maturity, broodstock development, and spawning performance two generations captive-reared Indian white shrimp, Penaeus indicus , over 36 months originated from a single stock wild brooders. The post larvae (G N -1) produced P. 0 ) P.L. -2) broodstocks were nursery (1000 PL m -3 grow-out (12 -2 reared, subsequently raised ponds (1 ). annual salinity photoperiod varied between 20 to ppt, 11.2 -12.5 L 11.5-12.8 D hours, respectively. light intensity 91 ± 6 lux at dusk 75,358 1719 noon. size first impregnation or mating was 16.45 1.7 g (132 DOC) 17.62 1.9 (90 DOC), respectively, G -1 females. By 220 DOC, 25% females initiated gonad whereas 55% recorded developing ovaries stage II 150 DOC. attained an average final body weight 38.85 1.5 42.65 1.8 by 360 highest (p<0.01) eggs per gram (5137 303 hatchability, H (83 0.7%), followed (1,715 162 ; H: 69 2%) (1,476 151 75 1%). However, had better survival (89-92%) than (71 0.8%). Further, indoor maturation trial (21 days) using ablated revealed 79% impregnated undergo molting, resulting loss sperm pack subsequent reduction efficacy 29%. count percentage normal also (p<0.05) during cycle. data generated investigation can form baseline information for strategy genetic improvement India.