斑节对虾4个不同群体建立家系的生长及成活

以泰国（T）、非洲（A）和三亚（S）野生斑节对虾（Penaeusmonodon）群体，以及人工养殖斑节对虾群体（F）为父、母本建立家系。选择9个发育时间相近和较有代表性的家系，对其生长和饲料利用进行了为期30d的养殖试验。结果发现，大体上母本含三亚斑节对虾基因的家系成活率较高，其余较低，差异显著（P〈0．05）；母本含三亚斑节对虾基因的家系生长较差，其余较好（除T×T外）且差异极显著（P〈0．01），A×A家系增重率是S×S的2倍；饵料系数没有显示明显的规律性。

Growth and survival of families established based on 4 different populations of black tiger shrimp Penaeus monodon

The families were established based on 4 different populations of black tiger shrimp Penaeus monodon, among which 3 wild broodstocks were caught from Thailand （T）, Africa （A） and Sanya （S） coastal waters, while the other was artificial bred shrimp （F）. The 9 representative families whose development time was almost the same were experimented for 30 days to study their growth and feed utilization. The results showed that the survival rate of the hybrid generations whose mothers got genetic features of P. monodon caught from Sanya coastal water was significantly higher than the others＇ （P 〈 0.05 ）, but the growth performance was very significantly poorer than the others （P 〈 0. 01 ） （ except for T×T） ; the weight gain rate of A ×A was 2 times as much as S × S, but it showed no significant regularity in the feed conversion ratio of the hybrid generations.