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Genetic variations of the greater long-tailed hamster among several local |
XIE Jiayan,ZHANG Zhibin1 |
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Abstract The genetic divergence among 7 local populations of the greater long-tailed hamster (Tscherskia triton) in North China was analysed by using random amplified polymorphic DNA(RAPD)markers. Sampling localities were Miyun Taishitun,Beijing;Miyun Jianchangcun,Beijing;Shunyi,Beijing;Mentougou,Beijing ;Gu'an,Hebei Province;Raoyang,Heibei Province;Taikang,Henan Province. The populations of the greater long-tailed hamster showed a comparatively high genetic diversity. Among those local populations,the percentage of polymorphic loci(P)was above 60%,Nei's gene diversity(H)varied from 0.204 to 0.326,Shannon index(I)from 0.306 to 0.484. The result of Gst showed that the total genetic variation among local populations was 30.9%. It is suggested that limited gene flow among those local populations,plus the impact of genetic drift,played an important role in shaping the populations genetic differentiation of the greater long-tailed hamster.
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