Genetic variation in scaly hair-fin anchovy Setipinna tenuifilis (Engraulididae) based on the mitochondrial DNA control region
文献类型: 外文期刊
作者: Xu, Shengyong 1 ; Song, Na 1 ; Lu, Zhichuang 2 ; Wang, Jun 3 ; Cai, Shanshan 1 ; Gao, Tianxiang 1 ;
作者机构: 1.Ocean Univ China, Inst Evolut & Marine Biodivers, Qingdao 266003, Shandong, Peoples R China
2.Liaoning Ocean & Fisheries Sci Res Inst, Key Lab Marine Biol Resources & Ecol, Dalian, Peoples R China
3.Chinese Acad Fishery Sci, Yellow Sea Fisheries Res Inst, Lab Stock Assessment & Ecosyst, Shandong Prov Key Lab Fishery Resources & Eco Env, Qingdao, Shandong, Peoples R China
关键词: Control region;historical demography;population genetic structure;Setipinna tenuifilis;tandem repeated sequence
期刊名称:MITOCHONDRIAL DNA ( 影响因子:0.925; 五年影响因子:0.994 )
ISSN:
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收录情况: SCI
摘要: Scaly hair-fin anchovy (Setipinna tenuifilis) is a small, pelagic and economical species and widely distributed in Chinese coastal water. However, resources of S. tenuifilis have been reduced due to overfishing. For better fishery management, it is necessary to understand the pattern of S. tenuifilis's biogeography. Genetic analyses were taken place to detect their population genetic variation. A total of 153 individuals from 7 locations (Dongying, Yantai, Qingdao, Nantong, Wenzhou, Xiamen and Beibu Bay) were sequenced at the 5 ' end of mtDNA control region. A 39-bp tandem repeated sequence was found at the 5 ' end of the segment and a polymorphism of tandem repeated sequence was detected among 7 populations. Both mismatch distribution analysis and neutrality tests showed S. tenuifilis had experienced a recent population expansion. The topology of neighbor-joining tree and Bayesian evolutionary tree showed no significant genealogical branches or clusters of samples corresponding to sampling locality. Hierarchical analysis of molecular variance and conventional pairwise population F-st value at group hierarchical level implied that there might have genetic divergence between southern group (population WZ, XM and BB) and northern group (population DY, YT, QD and NT). We concluded that there might have three different fishery management groups of S. tenuifilis and the late Pleistocene glacial event might have a crucial effect on present-day demography of S. tenuifilis in this region.
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