摘要
本文报导了在人工诱导和精养条件下,产卵后的海区长毛对虾能够再次成熟产卵,蓝且能多次产卵,最多同一个体产了四次卵。手术处理后亲虾的存活率为67.90%,成熟率为73.60%。较集中恢复成熟产卵是在手术后七天左右。产卵量为82200——285000粒/尾。第二次产卵后的亲虾经过五——八天的培育能产第三、第四次卵,成熟率分别为81.82%和20.00%。在卵径大小和幼体发育过程中与第一次所产的卵没有明显差别。
Through the artificial induction and intensive culture, the wild spawned Penaeus Penicillatus could remature and lay their eggs more than one time, the four respawanings were recorded to be the most in the same individuals. The survival rate of the operated broodstocks was 67.90 percent, and the maturity, 73.60 percent Most of the spawnings took place about 7 days after the eyestalk ablation, the fecundity was 82200 to 285000 eggs/ind.. After 5 to 8 day rearing, the respawned broodstocks could lay their third and fourth batch of eggs, the maturity were 81.82 percent and 20.00 percent respectively, there was no important difference between the egg diameter of the first and later batch.