Genetic variation and evolutionary demography of Fenneropenaeus chinensis populations, as revealed by the analysis of mitochondrial control region sequences

文献类型： 外文期刊

第一作者： Kong, Xiao Yu

作者： Kong, Xiao Yu;Li, Yu Long;Li, Yu Long;Shi, Wei;Kong, Jie

作者机构：

关键词： Fenneropenaeus chinensis; mtDNA; isolation with migration (IM) coalescence; historical demography; population expansion

期刊名称：GENETICS AND MOLECULAR BIOLOGY （ 影响因子：1.771； 五年影响因子：2.584 ）

ISSN： 1415-4757

年卷期： 2010 年 33 卷 2 期

页码：

收录情况： SCI

摘要： Genetic variation and evolutionary demography of the shrimp Fenneropenaeus chinensis were investigated using sequence data of the complete mitochondrial control region (CR). Fragments of 993 bp of the CR were sequenced for 93 individuals from five localities over most of the species' range in the Yellow Sea and the Bohai Sea. There were 84 variable sites defining 68 haplotypes. Haplotype diversity levels were very high (0.95 +/- 0.03-0.99 +/- 0.02) in F. chinensis populations, whereas those of nucleotide diversity were moderate to low (0.66 perpendicular to 0.36%-0.84 perpendicular to 0.46%). Analysis of molecular variance and conventional population statistics (F-ST) revealed no significant genetic structure throughout the range of F. chinensis. Mismatch distribution, estimates of population parameters and neutrality tests revealed that the significant fluctuations and shallow coalescence of mtDNA genealogies observed were coincident with estimated demographic parameters and neutrality tests, in implying important past-population size fluctuations or range expansion. Isolation with Migration (IM) coalescence results suggest that F. chinensis, distributed along the coasts of northern China and the Korean Peninsula (about 1000 km apart), diverged recently, the estimated time-split being 12,800 (7,400-18,600) years ago.

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