凡纳滨对虾亲虾驯养、促熟、产卵及无节幼体培育

Studies on the Domestication,Maturation,Spawning of Litopenaeus vannamei Broodstock and Nauplii Rearing

在水温27±2℃，盐度29±2；pH8．0～8．5。光强1000 1x的条件下，对来自我国台湾的1300对规格为35～45g／尾的凡纳滨对虾亲虾进行为期73d的驯养、促熟、产卵及无节幼体培育试验．结果表明，整个试验过程中，亲虾平均存活率为99．458%，波动区间[99．583％，99．333％]，日产卵亲虾比例平均为3．506％，波动区间[3．89％，3．123％]，雌虾单尾次日产无节幼体数量平均为18．928％，波动区间[19．691％，18．164％]．无节幼体的日产量随繁殖驯养的延长，呈渐渐上升态势。从240万尾（第21天）至2135万尾（第54天）平均为1323万尾．此外，试验发现近成熟的雌虾也能接受交配行为．

This experiment was conducted to study the domestication,maturation,spawning of 1300 pairs of pond-reared Litopenaeus vannarnei broodstock from Taiwan with body weight of 35～45 g/incl, and nauplii rearing for 73d under water temperature of 27 ± 20C, salinity of 29±2, pH 7.8～8.5 and light of 1 000Ix. The results showed that the daily average survival rate of the broodstock was 35.06%,fluctuation interval was [99. 583 %, 99. 333%];the daily nauplii average production of every spawned broodstock was 18.93× 10^4 ind. , fluctuation interval was [19.69 × 10^4 ind. , 18.16 × 10^4 ind. ];the daily naupii average production was 1 323×10^4 ind. ,increasing from 246×10^4 ind（21^th d）-2 135×10^4 （54^th d） during the experiment. In addition,it was reported that the near matured female can accept the mating of the male and mated female had not been observed died during the spawning.