Phylogeography and population structure of - grypotus (Richardson, 1846) as revealed by mitochondrial control region sequences
文献类型： 外文期刊
作者： Zhao, Linlin 1 ; Yi, Dan 1 ; Li, Chunhou 2 ; Sun, Dianrong 2 ; Xu, Hanxiang 3 ; Gao, Tianxiang 3 ;
作者机构： 1.SOA, Inst Oceanog 1, Qingdao 266003, Shandong, Peoples R China
2.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou 510300, Guangdong, Peoples R China
3.Zhejiang Ocean Univ, Fishery Coll, Zhoushan 316000, Zhejiang, Peoples R China
关键词： Johnius grypotus; mitochondrial control region; genetic diversity; genetic structure; population historical demography
期刊名称：ZOOKEYS （ 影响因子：1.546； 五年影响因子：1.442 ）
ISSN： 1313-2989
年卷期： 2017 年 705 期
页码：
收录情况： SCI
摘要： The 137 individuals of Johnius grypotus were collected from seven localities from the Bohai Sea to the East China Sea. A 549 base pair (bp) fragment of the hypervariable region of the mtDNA control region was sequenced to examine genetic diversity and population structure. The populations of J. grypotus showed high haplotype diversity h) with a range from 0.7500 to 0.9740 and low nucleotide diversity p) with a range from 0.0024 to 0.0067. Low and non-significant genetic differentiation was estimated among populations except for North Yellow Sea population, which has a significant genetic difference with other populations. The demographic history examined by mismatch distribution analyses and Bayesian skyline plot BSP) analyses revealed that a sudden population expansion occurred almost 20 to 40 thousand years before. Relatively recent population expansion in the last glacial period, large dispersal of eggs or larvae carried by coastal current, and the homogeneity of living environment may have an important influence on the population genetic pattern.
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