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用23个微卫星DNA标记分析了2000年前后北海、威海和舟山花鲈(Lateolabrax maculatus)地理群体(A组)和2006年2个烟台花鲈群体(B组)的遗传结构。A组内各群体Nei氏期望杂合度相似、有轻微遗传分化、属同一自由交配群;A组组内及威海和北海地理群体内存在瓶颈事件。B组内2群体无显著遗传分化,组内及群体A发生过瓶颈事件。尽管威海群体与B组2个群体的Nei’s期望杂合度、平均等位基因数相似,遗传距离小,属同一自由交配群,但威海群体与2个烟台群体间的遗传分化达到了显著水平,表明山东半岛沿海花鲈群体遗传结构从2000～2006年已发生一定程度的改变。
23 microsatellite DNA markers were used to analyze the genetic structure of Lateolabrax maculatus geographic group (group A) and the two populations of barnyard grouper (group B) in 2000 before and after the North Sea, Weihai and Zhoushan. The heterozygosity of Nei’s in each group in group A was similar, with slight genetic differentiation, belonging to the same free mating group. There was a bottleneck in group A and in the geographic populations of Weihai and Beihai. No significant genetic differentiation was observed in group B and there was a bottleneck in group A and group A. Although Nei’s expected heterozygosity, average allele number and genetic distance were the same in two populations of Weihai and B, they belonged to the same free mating population, but the genetic differentiation between Weihai population and two Yantai populations reached a significant level, indicating that The genetic structure of the coastal sea bass population in Shandong Peninsula has changed to some extent from 2000 to 2006.