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Population genetic structure of Marbled Rockfish, Sebastiscus marmoratus (Cuvier, 1829), in the northwestern Pacific Ocean

文献类型： 外文期刊

作者： Liu, Lu 1 ; Zhang, Xiumei 1 ; Li, Chunhou 3 ; Zhang, Hui 4 ; Yanagimoto, Takashi 5 ; Song, Na 1 ; Gao, Tianxiang 6 ;

作者机构： 1.Ocean Univ China, Minist Educ, Key Lab Mariculture, Qingdao 266071, Peoples R China

2.Qingdao Natl Lab Marine Sci & Technol, Lab Marine Fisheries & Aquaculture, Qingdao 266072, Peoples R China

3.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou 510003, Guangdong, Peoples R China

4.Chinese Acad Sci, Key Lab Marine Ecol & Environm Sci, Inst Oceanol, Qingdao 266071, Peoples R China

5.Japan Fisheries Res & Educ Agcy, Natl Res Inst Fisheries Sci, Yokohama, Kanagawa 2368648, Japan

6.Zhejiang Ocean Univ, Fisheries Coll, Zhoushan 316000, Peoples R China

关键词： Genetic diversity; genetic structure; historical population demographics; mtDNA control region; Sebastiscus marmoratus

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： 2019 年 830 期

页码：

收录情况： SCI

摘要： Sebastiscus marmoratus is an ovoviviparous fish widely distributed in the northwestern Pacific. To examine the gene flow and test larval dispersal strategy of S. marmoratus in Chinese and Japanese coastal waters, 421 specimens were collected from 22 localities across its natural distribution. A 458 base-pair fragment of the mitochondrial DNA (mtDNA) control region was sequenced to examine genetic diversity and population structure. One-hundred-six variable sites defined 166 haplotypes. The populations of S. marmoratus showed high haplotype diversity with a range from 0.8587 to 0.9996, indicating a high level of intrapopulation genetic diversity. Low non-significant genetic differentiation was estimated among populations except those of Hyogo, Behai, and Niiigata, which showed significant genetic differences from the other populations. The demographic history examined by neutrality tests, mismatch distribution analysis, and Bayesian skyline analysis suggested a sudden population expansion dating to the late Pleistocene. Recent population expansion in the last glacial period, wide dispersal of larvae by coastal currents, and the homogeneity of the environment may have important influences on the population genetic pattern. Knowledge of genetic diversity and genetic structure will be crucial to establish appropriate fishery management of S. marmoratus.

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