Genetic structure of Scomber japonicus (Perciformes: Scombridae) along the coast of China revealed by complete mitochondrial cytochrome b sequences
文献类型: 外文期刊
作者: Zhu, Yuxia 1 ; Cheng, Qiqun 1 ; Rogers, Sean M. 2 ;
作者机构: 1.Chinese Acad Fishery Sci, East China Sea Fisheries Res Inst, Key Lab East China Sea & Ocean Fishery Resources, Minist Agr, Shanghai 200090, Peoples R China
2.Univ Calgary, Dept Biol Sci, Calgary, AB, Canada
关键词: Chub mackerel;demographic history;genetic structure;marine fisheries;mitochondrial cytochrome b;Scomber japonicus
期刊名称:MITOCHONDRIAL DNA PART A ( 影响因子:1.514; 五年影响因子:0.707 )
ISSN:
年卷期:
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收录情况: SCI
摘要: The phylogeography history and contemporary agents of selection for many marine fisheries, characterized by widespread species distributions in the face of significant harvest, remains poorly understood. Chub mackerel {Scomber japonicus) are a widespread species in the Indo-Pacific and represent one of the top five commercially fished species in the world, yet their phylogeographic history remains unknown. We characterized the genetic diversity, structure and demographic history of S. japonicus throughout adjacent Chinese seas (from the Yellow Sea to the South China Sea). Using 220 individuals from 11 sites, we inferred 55 distinct haplotypes from complete mitochondrial cytochrome b gene sequences. Haplotype diversity ranged from 0.505 to 0.967 andnucleotide diversity ranged from 0.00056 to 0.01042. Genetic differentiation (Fst) statistics suggested that the highest level of differentiation existed between the SanYa and SanSha localities (Fst = 0.86977), while the lowest levels of differentiationoccurred between the DongGang and ShiDao localities (Fst~0). Kimura's genetic distances ranged from 0.001 to 0.011 within and from 0.001 to 0.018 between populations. Hierarchical analysis of molecular variance, Neighbor-joining and median-joining network analyses identified significant phylogeographic structure with two localities (SanYa, Hainan of the South China Sea and LianYunGang, Jiangsu of the East China Sea) explaining most of the genetic variation observed, while the remaining populations werepoorly differentiated.
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