Population genetics analysis of the black rockfish <em>Sebastes schlegelii</em> in Northern China based on 2b-RAD simplified genome sequencing

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dc.contributor.authorCao, Wei
dc.contributor.authorZhang, Mingyi
dc.contributor.authorWu, Nan
dc.contributor.authorHan, Haiying
dc.contributor.authorZhong, Rujie
dc.contributor.authorYu, Tao
dc.contributor.authorWang, Xiaomei
dc.contributor.authorRen, Liqun
dc.contributor.authorZhao, Chunnuan
dc.contributor.authorLi, Bo
dc.contributor.authorZheng, Yanxin
dc.date.accessioned2023-12-15T20:26:32Z
dc.date.available2023-12-15T20:26:32Z
dc.date.issued2023
dc.description.abstractThe black rockfish <em>Sebastes schlegelii</em> is an important fishery species in Japan, South Korea, and China. Overfishing has severely depleted the natural resources of <em>S. schlegelii</em> 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 <em>S. schlegelii</em> 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 (<em>PIC</em> < 0.25, <em>Ho</em>: 0.174-0.273, <em>He</em>: 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 < <em>Fst</em> < 0.25). However, the genetic differentiation was lower among the other wild populations (<em>Fst</em> < 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 (<em>Nm</em> > 1). This study provides a theoretical basis for conserving and rationalizing germplasm resources for <em>S. schlegelii</em>.
dc.format.extentnull pages
dc.identifier.doihttps://doi.org/10.46989/001c.90864
dc.identifier.issn0792-156X
dc.identifier.urihttps://hdl.handle.net/10524/73962
dc.relation.ispartofThe Israeli Journal of Aquaculture - Bamidgeh
dc.subjectgenetic diversity
dc.subject2b-RAD sequencing
dc.subjectSNP
dc.subjectpopulation genetics
dc.subjectSebastes schlegelii
dc.titlePopulation genetics analysis of the black rockfish <em>Sebastes schlegelii</em> in Northern China based on 2b-RAD simplified genome sequencing
dc.typeArticle
dc.type.dcmiText
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prism.volume75

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Volume 75, Issue 2, 2023