Spatial Genetic Structure of Onychodactylus zhaoermii Population
The genetic diversity and spatial genetic structure of Onychodactylus zhaoer-mii from four geographic populations were studied using 13 microsatellite loci.In total of 69 alleles were detected in 230 samples,and the number of differential alleles(Na)among populations ranged from 1.538 to 4.462,with low genetic diversity.Except for the Benxi Xinkai Village population(PopⅣ),there was no significant genetic differentiation among the Xiuyan Huashan Village population(PopⅠ),Liaoyang Jizhua Village population(PopⅡ)and Liaoyang Hanjia Village population(PopⅢ),and ge-netic variation mainly originated from within the populations.There was a linear correlation between genetic distance and geographic distance,but it was not significant.Some genetic differences were observed when populations were divided by water system.Within 500 m distance,there was a high genetic similarity among individuals of O.zhaoermii.Three barriers existed between the four populations.A significant geographic barrier effect was formed between the Xinkai Village popula-tion(PopⅣ)and the other three populations(PopⅠ-Ⅲ).It is recommended that each geographic population should be es-tablished as a management unit and the habitat protection should be strengthened to reduce the impact of habitat fragmenta-tion on wild resources of O.zhaoermii.
NETL
NSTL
万方数据
维普
