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

作     者：GAO Tianxiang LI Lin FANG Rundong LIU Guanghui WANG Lei XU Hanxiang SONG Na 

作者机构：Fishery College Zhejiang Ocean University Zhoushan 316022 China Key Laboratory for Technology Research on Sustainable Utilization of Marine Fishery Resources Zhoushan 316022 China Marine Science and Engineering College Qingdao Agricultural University Qingdao 266109 China The Key Laboratory of Mariculture Ministry of Education Ocean University of China Qingdao 266003 China Oceans and Fisheries Bureau of Dongying District Dongying 257091 China 

出 版 物：《Journal of Ocean University of China》 (中国海洋大学学报（英文版）)

年 卷 期：2019年第18卷第4期

页      面：947-952页

核心收录：

学科分类：07[理学] 

基　　金：supported by the National Natural Science Foundation of China (No. 41776171) 

主　　题：Pholis fangi control region of mtDNA genetic diversity genetic structure demographic history 

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 Yel- low 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 (π= 0.0028) were detected. Both the phylogenetic tree and the haplotype network showed no significant genealogical structure difference among sampling locations. Pairwise FST comparison and hierarchical mo- lecular variance analysis (AMOVA) revealed that no significant genetic structure difference existed throughout the investigated re- gions, 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 con- tribute to the genetically homogeneous population structure of the species.