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首页> 外文期刊>Zoological Science >Genetic variation and differentiation in the Japanese five-lined skink, Eumeces latiscutatus (Reptilia : Squamata)
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Genetic variation and differentiation in the Japanese five-lined skink, Eumeces latiscutatus (Reptilia : Squamata)

机译：日本五线石龙子Eumeces latiscutatus（Reptilia：Squamata）的遗传变异和分化

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摘要

The genetic variation in Eumeces latiscutatus from the main islands of Japan and the northern Ryukyus was investigated and compared with that of its close relatives (E. okadae and E. marginatus) using allozyme data. All three samples from the northern Tokara Island Group, currently identified as E. latiscutatus, were shown to belong to E. marginatus and not to E. latiscutatus. The non-monophyly of the northern Tokara samples and the great genetic differences within these samples may have resulted from colonization from more than one source population by northeastward overseas dispersal. The samples from the Izu Peninsula were genetically much closer to E. okadae than the other conspecific ones. This indicates that the samples from the Izu Peninsula and the other samples of E. latiscutatus should be treated as distinct species, and that E. latiscutatus from the Izu Peninsula and E. okadae from the Izu Island Group may be treated as conspecific. Samples from western Japan were genetically well differentiated from those of eastern Japan. Within the western group, the samples from the Osumi Island Group was genetically distinct from those from the other regions, by possessing unique alleles. Our phenograms also reveal a distant affinity between samples from the Danjo Island Group and the main islands of Japan. This may be the result of long geographic isolation of the Osumi and Danjo Island Groups from Kyushu. By contrast, samples from Sapporo and Aomori were poorly differentiated genetically in spite of the long separation of these two localities by the Tsugaru Strait. This suggests that overseas dispersal of E. latiscutatus occurred across this strait after its formation.
机译：利用同工酶数据，对日本主要岛屿和琉球北部北部的Eumeces latiscutatus的遗传变异进行了调查，并将其与其近亲的遗传关系进行了比较。来自北部Tokara岛群的所有三个样本，目前被识别为E. latiscutatus，被证明属于边缘E. latiscutatus。北部Tokara样品的非单性性和这些样品中的巨大遗传差异可能是由于东北向海外扩散从一个以上来源种群中定殖造成的。从基因上讲，伊豆半岛的样本比其他同种样本更接近冈田大肠杆菌。这表明应该将伊豆半岛的样本和拉提克希奇斯的其他样本视为不同的物种，并且伊豆半岛的伊提斯卡奇希和伊豆岛群的冈田大肠菌应视为同种。日本西部地区的样本与日本东部地区的样本在基因上有很好的区别。在西方群中，大s岛群的样本具有独特的等位基因，因此与其他地区在遗传上截然不同。我们的表也显示了Danjo岛群和日本主要岛屿的样本之间的远距离亲和力。这可能是Osumi和Danjo岛群与九州之间长期地理隔离的结果。相比之下，尽管津轻海峡将这两个地区长期隔离开来，但札幌和青森州的样本在遗传上却差强人意。这表明，在该海峡形成后，该海峡发生了海外传播。

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