【摘要】 采用不连续垂直板聚丙烯酰胺凝胶电泳技术,对广西北海、福建漳港和江苏启东3个西施舌自然群体的7个等位酶12个位点进行检测分析。结果表明,西施舌群体的遗传多样性较高,平均每位点等位基因数目(A)范围为1.5833—2.0000、平均每位点有效等位基因数目(Ae)范围为1.2850—1.5373、多态位点百分数(P)为33.33%、观察杂合度(Ho)为0.2389—0.3083、期望杂合度(He)为0.1496—0.2041之间。西施舌群体间有一定的遗传分化,遗传分化系数(FST)为0.0719,福建漳港群体与广西北海群体之间的FST为0.0413,但福建漳港群体和广西北海群体与江苏启东群体之间的FST为0.0505。更多还原

【Abstract】 7 allozymes and 12 loci were detected in 3 natural populations of Coelomactra antiquata (Spengler) from South China using vertical slab polyacrylamide gel electrophoresis. High level of genetic diversity in C. antiquata was found. The mean number of alleles per locus (A) ranged from 1.5833 to 2.0000, and the mean effective number of alleles per locus was from 1.2850 to 1.5373; the percentages of polymorphic loci (P) was 33.33%, the observed heterozygosities (Ho) was from 0.2389 to 0.3083, the expected heterozygosities was from 0.1496 and 0.2041. Genetic differentiation among C. antiquata populations was obvious for having FST at 0.0719, genetic distances among populations ranged from 0.0164 to 0.0302, in average of 0.0245.更多还原