Shallow Genetic Structure of Pholis fangi in Bohai Sea and Yellow Sea Inferred from mtDNA Control Region

被引:4
作者
Gao Tianxiang [1 ,2 ]
Li Lin [3 ]
Fang Rundong [4 ]
Liu Guanghui [5 ]
Wang Lei [5 ]
Xu Hanxiang [1 ,2 ]
Song Na [4 ]
机构
[1] Zhejiang Ocean Univ, Fishery Coll, Zhoushan 316022, Peoples R China
[2] Key Lab Technol Res Sustainable Utilizat Marine F, Zhoushan 316022, Peoples R China
[3] Qingdao Agr Univ, Marine Sci & Engn Coll, Qingdao 266109, Shandong, Peoples R China
[4] Ocean Univ China, Key Lab Mariculture, Minist Educ, Qingdao 266003, Shandong, Peoples R China
[5] Oceans & Fisheries Bur Dongying Dist, Dongying 257091, Peoples R China
基金
中国国家自然科学基金;
关键词
Pholis fangi; control region of mtDNA; genetic diversity; genetic structure; demographic history; POPULATION-GROWTH; DISPERSAL; DIVERSITY; VARIANCE; LESSONS; HISTORY;
D O I
10.1007/s11802-019-3991-6
中图分类号
P7 [海洋学];
学科分类号
0707 ;
摘要
Pholis fangi is an ecologically important fish species inhabiting Chinese coastal waters of Yellow Sea and Bohai Sea. To investigate the genetic diversity and population genetic structure of P. fangi, a fragment of 487 bp in the first hypervariable region (HVR-1) of the mitochondrial DNA (mtDNA) control region was sequenced for 181 individuals collected from Bohai Sea and Yellow Sea. A total of 18 polymorphic sites were detected, which defined 25 haplotypes. A moderate level of haplotype diversity (h = 0.7052) and a low level of nucleotide diversity (pi = 0.0028) were detected. Both the phylogenetic tree and the haplotype network showed no significant genealogical structure difference among sampling locations. Pairwise F-ST comparison and hierarchical molecular variance analysis (AMOVA) revealed that no significant genetic structure difference existed throughout the investigated regions, suggesting a high gene exchange among different populations. The results of neutrality test and mismatch distribution analysis indicated that a late Pleistocene population expansion (38000-127000 years ago) happened. Seasonal schooling migration may contribute to the genetically homogeneous population structure of the species.
引用
收藏
页码:947 / 952
页数:6
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