The Genetic Structure and Variation of Five Populations in the Chinese Scallop, Chlamys Farreri

摘要

The genetic population structure and genetic variation of Chlamys farreri stocking in Chinese coastal waters of northern Yellow Sea have been investigated based on the starch gel electrophoresis of 23 loci of eight allozymes and one soluble protein. Twenty-two of 23 locistudied are polymorphic, only Mdh-l is homogeneous inthe populations. Most of the loci depart from the Hardy-weinberg Equilibrium in frequencies or the allele and genotype. The observed average heterozy gosity is in the equilibrium for each population. however, heterozygote deficiencies have been observed in most loci according to the deviatin index of Hardy-Weinberg equilibrium (D). The comprehensive indexes for assessing the genetic variation (CIGV), constructed upon Ho, Ne and Dx, are 0.73 (HY), 0.54 (KL), 0.66 (CD), O.66 (RC) and 0.13 (QD), respectivesly. The HY population is isolated from other populations in genetics.