Population Differentiation and Gene Flow Revealed by Microsatellite DNA Markers in the House Mouse (Mus musculus castaneus) in Taiwan
Population Differentiation and Gene Flow Revealed by Microsatellite DNA Markers in the House Mouse (Mus musculus castaneus) in Taiwan
复制标题
DOI：
10.2108/zsj.19.475
复制
发表时间：
2002-04
期刊：
影响因子：
--
通讯作者：
Hon‐Tsen Yu;Yu-Huei Peng
中科院分区：
文献类型：
--
作者：
Hon‐Tsen Yu;Yu-Huei Peng
摘要本研究利用六个微卫星DNA标记分析台湾地区东南亚家鼠的族群细分与基因流。本研究分析了7个家鼠种群（187只），其中包括一个来自中国东南部的福建省，它与台湾海峡分开，。6个位点的总体多态性水平较高（He=0.76），但个体群体的杂合性水平各不相同（He=0.35-0.83）。对于台湾地区的人群，没有证据表明隔离的距离和水平的基因流是不（负）相关的地理距离。据估计，台湾海峡两岸的基因流动高于台湾岛内。这些关于基因流动的观察结果，除非在人类历史定居点和农业扩张的背景下，以及在物种的繁殖习惯中，否则无法理解。并根据台湾家鼠的生态特性，讨论了家鼠种群分化的原因及种群间的遗传变异。
Abstract We analyzed population subdivision and gene flow of the Southeast Asian house mouse (Mus musculus castaneus) in Taiwan by using six microsatellite DNA markers. Seven populations of the house mouse (187 individuals), including one from Fukien Province in southeastern China, which is separated from Taiwan by the Taiwan Strait, were analyzed in this study. The overall polymorphic level at the six loci was high (He=0.76) although individual populations varied in their levels of heterozygosity (He=0.35–0.83). For the populations within Taiwan, there was no evidence of isolation by distance and the level of gene flow was not (inversely) correlated to geographic distances. Gene flow was estimated to be higher across the Taiwan Strait than within the island of Taiwan. These observations of gene flow cannot be understood unless in the context of the historical human settlements and agricultural expansion, and the commensal habits of the species. We also discussed the causes of population subdivision and genetic variation among populations in terms of ecological characteristics of the house mouse in Taiwan.