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| Effects of Unilateral Eyestalk Ablation on Ovary Development and Spawning of Cultured Tiger Shrimp Penaeus monodon with Different Body Weight |
| YANG Qibin,QIU Lihua,HUANG Jianhua,ZHOU Falin,WEN Weigeng |
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Abstract The effects of unilateral eyestalk ablation on ovary development and spawning were studied in cultured tiger shrimp Penaeus monodon with body weight from 56 .4 g to 105 .4 g in 4 trials to evaluate the relationship between ovary development and spawning and body weight of cultured tiger shrimp .The re‐sults showed that ovary maturation of cultured tiger shrimp was induced by unilateral eyestalk ablation , with maturation success rate (% ) ,significantly related to the body weight of female logarithmically (P<0 .05):y=133 .92lnx-535 .63(r2 =0 .9297) .The smaller female was ,the lower maturation success rate was .The tiger shrimp females with eyestalk ablated spawned as early as the 10th day after ablation ,some females spawning repeatedly .The fecundity was found to be significantly positively related to the body weight of female logarithmically (P<0 .05):y=122 .22ln x-472 .2(r2 =0 .9738) ,the smaller the female was ,the less egg production was .The accumulative mortality of female ,egg diameter and hatching rate were not significantly related to the body weight of female .The cultured tiger shrimp females with body weight of ≥80 .0 g is recommended for broodstock .
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Received: 25 May 2016
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