摘要
采用水平淀粉凝胶电泳技术研究了山东荣成、青岛、浙江温州三个泥蚶群体样本的等位基因酶遗传变异。在１２种等位基因酶中共检测到了２７个基因位点，三个群体的多态位点比例（Ｐ０．９９）分别为３７．００％、４０．７０％和４８．１５％，平均杂合度观察值分别为０．０６２±０．０３１、０．０６８±０．０２６和０．０９７±０．０３４，平均位点有效等位基因数分别是１．４０９±０．２７５、１．３０１±０．１４２和１．４０７±０．１９２。比较了三个群体之间的遗传相似度（Ⅰ）和遗传距离（ＤＮｅｉ），表明荣成和青岛群体遗传同一性较大，而它们与温州群体的遗传分歧较明显。三个群体在多个位点上都存在明显的杂合子缺失现象。
Allozyme variation within three populations (Rongcheng、Qingdao and Wenzhou) of Tegillarca granosa from Chinese coast was investigated using starch gel electrophoresis. 27 loci in 12 enzymes were detected, and the percentage of polymorphic loci per population was 37.00% 、40.70% and 48.15% respectively, mean heterozygosity observed in three population samples was 0.062±0.031、0.068±0.026 and 0.097±0.034 separately, mean effective number of alleles varied between 1.301 and 1.409. Variation comparisions for several loci were made among three populations in which GPI locus showed highly variation. In addition, the genetic similarity and genetic distance among them were caculated, and it was indicated that the genetic divergence of Wenzhou sample from the other two samples was greater than that between the other two samples.
出处
《中国水产科学》
CAS
CSCD
1997年第5期15-21,共7页
Journal of Fishery Sciences of China
基金
国家自然科学基金
国家教委水产养殖研究开放实验室基金
关键词
泥蚶
等位基因酶
遗传变异
Tegillarca granose, Allele enzyne , Genetic variation
