Genetic structure and historical demography of Collichthys lucidus inferred from mtDNA sequence analysis
文献类型: 外文期刊
作者: Song, Na 1 ; Ma, Guoqiang 1 ; Zhang, Xiumei 1 ; Gao, Tiangxiang 1 ; Sun, Dianrong 2 ;
作者机构: 1.Ocean Univ China, Coll Fisheries, Qingdao, Peoples R China
2.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou, Guangdong, Peoples R China
关键词: Collichthys lucidus;Control region;Pleistocene;Historical demography;Population genetic structure
期刊名称:ENVIRONMENTAL BIOLOGY OF FISHES ( 影响因子:1.844; 五年影响因子:1.839 )
ISSN:
年卷期:
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收录情况: SCI
摘要: Fluctuations of global climate changes during the Pleistocene had a huge impact on the marginal seas of the Northwestern Pacific. To examine historical demography and the population genetic structure of Collichthys lucidus, a total of 151 individuals from 7 locations were sequenced at the 5' end of mitochondrial DNA control region and 380-bp fragments were obtained. The results of AMOVA showed that the genetic variation among the two groups was 78.39 % (P = 0.78) and among populations within groups was 0.43 % (P = 0.02). Both mismatch distribution analysis and neutrality tests showed C. lucidus has experienced a recent population expansion. Three distinct clades suggested that C. lucidus might be isolated in the three marginal seas during the Pleistocene periods. No genetic divergence within groups should be explained by insufficient time to attain migration-drift equilibrium. The changes in sea level during the Pleistocene had a major effect on the C. lucidus phylogeographical pattern because it limited its dispersal and at times created isolated populations.
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