鄱阳湖地区3种体色黄鳝酯酶同工酶的遗传差异分析

为了解鄱阳湖区黄鳝群体的亲缘关系,对鄱阳湖区大花鳝,细花鳝,隐花鳝3种体色黄鳝的酯酶同工酶进行了研究,结果表明,黄鳝酯酶同工酶由EST-A和EST-B2个多态位点组成。各种体色黄鳝的多态位点百分率为100%,群体平均杂合度为0.4351～0.4646。表明黄鳝天然群体在酯酶同工酶酶系统各基因位点上具有较高的遗传变异水平,其遗传变异性大多发生于群体内,群体内变异占总变异的99.66%,而群体间变异只占总变异的0.34%;聚类分析表明,大花鳝和隐花鳝为同一分支,细花鳝为另一分支。

Variation of Esterase Isoenzyme among Three Kinds of Bodily Color Monopterus albus in Poyang Lake Region

Researches were accomplished on the genetic structure of three kinds of bodily color Monopterus albus with Esterase Isoenzyme. The results indicated that the Esterase Isoenzyme of Monopterus albus consisted of two polymorphic loci: EST-A, EST-B. The percentage of polymorphic loci of every population was 100%. The heterozygosity values ranged from 0.435 1～0.464 6. Results also showed that higher variation on genetic locus of Esterase Isoenzyme existed in three kinds of bodily color Monopterus albus. Genetic variations mostly arose within the population. The inner-population genetic variation accounts for 99.66% of the total genetic variations and the inter-population genetic variation accounts for 0.34% . Phylogenetic tree showed the heavy colored albus and the latent colored albus belong to the same clade, and the thin colored albus belongs to another clade.