Genetic diversity and population structure of Portunus sanguinolentus (Herbst, 1783) revealed by mtDNA COI sequences

文献类型： 外文期刊

第一作者： Ren, Guijing

作者： Ren, Guijing;Ma, Hongyu;Ma, Chunyan;Wang, Wei;Chen, Wei;Ma, Lingbo;Ma, Hongyu

作者机构：

关键词： Genetic differentiation;genetic diversity;P. sanguinolentus;population expansion

期刊名称：MITOCHONDRIAL DNA PART A （ 影响因子：1.514； 五年影响因子：0.707 ）

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收录情况： SCI

摘要： In this paper, population genetic diversity and genetic structure of Portunus sanguinolentus distributed along China coast was investigated based on mitochondrial DNA cytochrome c oxidase subunit I (COI) gene. Sixty-eight haplotypes and 71 polymorphic sites were detected in 110 individuals sampled from four localities. The average haplotype diversity (h) and nucleotide diversity (tt) were 0.9576 and 0.0051, respectively. Pairwise F$t statistics among different localities were negative or low and insignificant, suggesting a widespread gene flow. The AMOVA analysis also indicated a broad genetic exchange among four localities (FSt= -0.0039, p - 0.559). The high dispersal capabilities of larvae of P. sanguinolentus coupled with the limited physical barriers in marine environment may be responsible for the high gene flow among P. sanguinolentus populations along southeastern coast of China. Moreover, neutrality test and mismatch analysis implied that P. sanguinolentus population might have undergone a rapid population expansion event. The time of population expansion was estimated to occur about 229,000-321,000 years ago.

分类号： Q7

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