Fine-scale population structure of Collichtys lucidus populations inferred from microsatellite markers
文献类型： 外文期刊
作者： Song, Na 1 ; Yin, Lina 2 ; Sun, Dianrong 3 ; Zhao, Linlin 4 ; Gao, Tianxiang 5 ;
作者机构： 1.Ocean Univ China, Fisheries Coll, Qingdao, Shandong, Peoples R China
2.North China Sea Marine Engn Prospecting Res Inst, Qingdao, Shandong, Peoples R China
3.Chinese Acad Fishery Sci, South China Sea Fisheries Res Inst, Guangzhou, Guangdong, Peoples R China
4.Minist Nat Resources, Inst Oceanog 1, Qingdao, Shandong, Peoples R China
5.Zhejiang Ocean Univ, Fishery Coll, Zhoushan, Peoples R China
关键词： Collichthys lucidus; genetic differentiation; microsatellite DNA; population genetic structure
期刊名称：JOURNAL OF APPLIED ICHTHYOLOGY （ 影响因子：0.892； 五年影响因子：0.956 ）
ISSN： 0175-8659
年卷期： 2019 年 35 卷 3 期
页码：
收录情况： SCI
摘要： The spinyhead croaker Collichthys lucidus (Richardson) is a small sciaenid species distributed along the inshore waters of northwestern Pacific Ocean, and now has been listed as Key Protected Commercial Sources of Aquatic Animals and Plants in China. To delineate stock boundaries and inform conservation policy for its management, samples were collected from eight locations across the Chinese coastal waters and analyzed at nine microsatellite loci. C. lucidus populations showed low genetic diversity (expected heterozygosity = 0.445-0.542; observed heterozygosity = 0.392-0.539; Polymorphism Information Content = 0.268-0.684). Strong genetic fdifferentiation (F-st = 0.065-0.510, all significant after Bonferroni correction) among all populations and high levels of self-recruitment (89.2%-91.5%) were observed, which suggested limited genetic exchange for this species. Clustering results of discriminant analysis of principal components and STRUCTURE found strong support for obvious genetic clusters (populations FZ, XM and SZ vs. populations SH, YRE, ZS, WZ and ND). The results of the present study not only supported the phylogeographic pattern of north-south differentiation, but also suggested that C. lucidus populations may be predominantly sustained by self-replenishment rather than by recruitment from distant populations.
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