The genetic structure and genetic diversity in individuals with different genetic relationship in six families of common carp Cyprinus carpio var.jian
LI Jian-lin,TANG Yong-kai,LI Hong-xia,YU Ju-hua,DONG Zai-jie
Key Laboratory of Freshwater Fisheries and Germplasm Resources Utilization,Ministry of Agriculture,Freshwater Fisheries Research Center, Chinese Academy of Fishery Sciences,Wuxi 214081,China
Abstract: The genetic structure and the genetic distance in the individuals with different genetic relationship in six families of common carp Cyprinus carpio var.jian were evaluated by 12 microsatellite loci.A total of 80 alleles and 172 genotypes were detected in the six families and the alleles had the average number of 6.7 and genotype number of 14.3 at each locus.The average observed(Ho)and expected heterozygosity(He)in the six populations were varied from 0.725 to 0.883 and from 0.533 to 0.656,respectively,and the average polymorphic information content(PIC)from 0.440 to 0.584.The fixation index(FIS)indicated that heterozygote excess existed in all of the six families(FIS＜0).In the six families,the average genetic distance between the families was 0.458 7,and the genetic distance differentiation coefficient(Fst)was 0.209 4.There was average genetic distance of 0.333 1 between male parent and offspring,0.347 7 between female parent and offspring and 0.318 0 between siblings,and the average genetic distance between the individuals which did not have consanguinity was 0.635 3,significantly higher than that between the parent-offspring and the siblings(P＜0.01).The findings showed that there were rich polymorphism information content and large genetic diversity in the six families,indicating that the six populations have a large selection potential.
李建林, 唐永凯, 李红霞, 俞菊华, 董在杰. 6个建鲤家系的遗传结构及不同亲缘关系个体间的遗传差异分析[J]. 大连海洋大学学报, 2013, 28(2): 166-170.
LI Jian-lin, TANG Yong-kai, LI Hong-xia, YU Ju-hua, DONG Zai-jie. The genetic structure and genetic diversity in individuals with different genetic relationship in six families of common carp Cyprinus carpio var.jian. Journal of Dalian Ocean University, 2013, 28(2): 166-170.
2013, Vol. 28 
