Population genetic structure of the perlemoen Haliotis midae in South Africa:: evidence of range expansion and founder events
Population genetic structure of the perlemoen Haliotis midae in South Africa:: evidence of range expansion and founder events
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DOI：
10.3354/meps270163
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发表时间：
2004-01-01
影响因子：
2.5
通讯作者：
Elliott, NG
中科院分区：
文献类型：
--
作者：
Evans, BS;Sweijd, NA;Elliott, NG
鲍鱼（Haliotis midae）是一种高度有价值且被大量开发的海洋腹足动物，我们使用 3 种标记类型对来自南非该物种分布范围的样本进行了评估。比较了 7 个同种酶基因座、2 个线粒体 DNA 区域和 3 个微卫星基因座的变异。我们得出结论，厄加勒斯角两侧的 H. midae 种群代表了 2 个独立的繁殖种群。种群之间的过渡区域与该地区的海洋学特征相符。所有 3 种遗传标记的证据表明，厄加勒斯角以东发生了一次孤立的引入事件，随后范围向东扩展。等位酶数据与其他两种形式之间的差异被视为等位酶基因座平衡选择存在的进一步证据。
Genetic diversity in Haliotis midae, a highly valued and heavily exploited marine gastropod, was assessed using 3 marker types across samples from the species' range in South Africa. Variation was compared at 7 allozyme loci, 2 regions of mitochondrial DNA and 3 microsatellite loci. We conclude that populations of H. midae on either side of Cape Agulhas represent 2 independent reproductive stocks. The area of transition between the stocks coincides with oceanographic features of the region. Evidence from all 3 types of genetic marker indicates an isolated introduction event to the east of Cape Agulhas, and subsequent range expansion in an easterly direction. The disparity between allozyme data and the other 2 forms is seen as further evidence for the presence of balancing selection at allozyme loci.