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The genetic diversity of central and peripheral populations of ratlike hamster (Cricetulus triton)

【摘要】:正The impact of habitat fragmentation and isola-tion on the genetic diversity of populations has attracted much attention in studies of meta-population and conserva-tion biology. In this work, using the randomly amplified po-lymorphic DNA (RAPD) technique, we studied the genetic diversity of central, peripheral and peninsular populations of ratlike hamster, which were collected in five locations of the North China Plain and its surrounding areas, in 1999. The study revealed that, i ) the genetic diversity of central population of Raoyang County the sub-central populations of Gu'an County and Taikang County the peripheral population of Shunyi District the peninsular population of Mentougou District; ii) the genetic diversities of the five populations were positively correlated to the nearest dis-tances to the peripheral line of population distribution; iii) there were significant differences of gene frequencies of some RAPD fragments among the five populations. More RAPD fragments disappeared in perip

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