Population genetics analysis of the black rockfish Sebastes schlegelii in Northern China based on 2b-RAD simplified genome sequencing
文献类型： 外文期刊
作者： Cao, Wei 1 ; Zhang, Mingyi 1 ; Wu, Nan 1 ; Han, Haiying 1 ; Zhong, Rujie 1 ; Yu, Tao 1 ; Wang, Xiaomei 3 ; Ren, Liqun 1 ; Zhao, Chunnuan 1 ; Li, Bo 1 ; Zheng, Yanxin 1 ;
作者机构： 1.Chinese Acad Fishery Sci, Changdao Enhancement & Expt Stn, Yantai, Peoples R China
2.Ludong Univ, Sch Agr, Yantai, Peoples R China
3.Chinese Acad Fishery Sci, Beijing, Peoples R China
期刊名称：ISRAELI JOURNAL OF AQUACULTURE-BAMIDGEH （ 影响因子：0.6； 五年影响因子：0.6 ）
ISSN： 0792-156X
年卷期： 2023 年 75 卷 2 期
页码：
收录情况： SCI
摘要： The black rockfish Sebastes schlegelii is an important fishery species in Japan, South Korea, and China. Overfishing has severely depleted the natural resources of S. schlegelii in recent years, leading to the initiation of programs aimed at enhancing fish stock. However, the genetic structure of northern populations remains elusive, posing challenges in collecting and preserving germplasm resources. In this study, a total of 191 S. schlegelii individuals from seven populations, including one cultured population (Changdao: CDYZ) and six wild populations (Lianyungang: LYG; Qingdao: QD; Weihai: WH; Changdao: CDYS; Beidaihe: BDH) sequenced by 2b-RAD method and their population genetics was analyzed using 27,064 SNPs obtained. The results indicated low genetic diversity in both wild and cultured populations (PIC < 0.25, Ho: 0.174-0.273, He: 0.173-0.234), with the cultured population exhibiting higher diversity than the wild ones. Moderate genetic differentiation existed between the cultured population and six wild populations (0.05 < Fst < 0.25). However, the genetic differentiation was lower among the other wild populations (Fst < 0.05). The analyses of population genetic structure indicated that the wild populations clustered together first and finally with the cultured population CDYZ, which clustered separately except for one individual. Therefore, scientific breeding programs and germplasm conservation can be important in stabilizing genetic structure. In addition, gene flow among the seven populations was high (Nm > 1). This study provides a theoretical basis for conserving and rationalizing germplasm resources for S. schlegelii.
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