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Phylogeography and genetic population structure of the spadenose shark (Scollodon macrorhynchos) from the Chinese coast

文献类型： 外文期刊

作者： Chen, Xiao 1 ; Wang, Jun-Jie 2 ; Ai, Wei-Ming 3 ; Chen, Hao 3 ; Lin, Hung-Du 4 ;

作者机构： 1.South China Agr Univ, Coll Marine Sci, Guangzhou, Guangdong, Peoples R China

2.Chinese Acad Fishery Sci, Key Lab Trop & Subtrop Fishery Resource Applicat, Minist Agr, Pearl River Fisheries Res Inst, Guangzhou, Guangdong, Peoples R China

3.Wenzhou Med Univ, Sch Life Sci, Wenzhou, Peoples R China

4.Natl Tainan First Senior High Sch, Dept Biol, Affiliated Sch, Tainan, Taiwan

关键词： Phylogeography; Scoliodon macrorhynchos; shark

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

ISSN： 2470-1394

年卷期： 2018 年 29 卷 7 期

页码：

收录情况： SCI

摘要： The population structure of Scoliodon macrorhynchos from the Chinese coast was investigated using the mitochondrial control region. All 19 mtDNA haplotypes from 219 sequences were identified. Relatively high average haplotype diversity (0.797) and relatively low average nucleotide diversity (0.0013) were found together with a recent and sudden population expansion. Analysis of the mismatch distributions, neutrality tests and Bayesian skyline plot showed a pattern consistent with a recent population expansion event that may have taken place during the last glacial maximum (LGM). The analysis of molecular variance (AMOVA) showed the low genetic differentiation between the populations, which may be a general feature of sharks living in coastal areas. The phylogenetic and cluster analysis of the mtDNA indicates that two putative groups (K=2) existed in S. macrorhynchos, showing that the Taiwan Strait acted as a biogeographic barrier during major drops in the sea level in the late Pliocene epoch.

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