Analysis of the population structure and genetic diversity of the red swamp crayfish (Procambarus clarkii) in China using SSR markers
文献类型： 外文期刊
作者： Liu, Fei 1 ; Qu, Yun-Kun 1 ; Geng, Chao 1 ; Wang, Ai-Ming 1 ; Zhang, Jia-Hong 2 ; Li, Jin-Feng 3 ; Chen, Kai-Jian 5 ; Liu 1 ;
作者机构： 1.Yancheng Inst Technol, Sch Marine & Bioengn, Dept Marine Sci & Technol, Yancheng 224051, Peoples R China
2.Agr Sci Inst Lixiahe Dist, Yangzhou 225007, Jiangsu, Peoples R China
3.Jiangsu Jinfeng Agr Technol Co Ltd, Jianhu 224000, Peoples R China
4.Changsha Univ, Dept Biol & Environm Engn, Hunan Prov Key Lab Nutr & Qual Control Aquat Anim, Changsha 410022, Peoples R China
5.Hunan Agr Univ, Coll Anim Sci & Technol, Ctr Engn & Technol Res Utilizat Characterist Aqua, Changsha 410128, Peoples R China
6.Chinese Acad Fishery Sci, Freshwater Fisheries Res Ctr, Wuxi 214081, Jiangsu, Peoples R China
关键词： Aquatic resource; Genetic diversity; Genetic structure; Germplasm; Heterozygosity; Microsatellite; Procambarus clarkii; Red swamp crayfish; SSR marker
期刊名称：ELECTRONIC JOURNAL OF BIOTECHNOLOGY （ 影响因子：2.8； 五年影响因子：3.379 ）
ISSN： 0717-3458
年卷期： 2020 年 47 卷
页码：
收录情况： SCI
摘要： Background: Procambarus clarkii produces high-quality, delicious meat that is high in protein, low in fat, and rich in calcium and phosphorus. It has become an important aquatic resource in China. Our objectives are (i) to analyze the level of genetic diversity of P. clarkii populations; (ii) to explore the genetic differentiation (Gst): and (iii) to propose appropriate strategies for the conservation. Results: In this study, Shannon's index (1) and Nei's gene diversity index (H) for P. clarkii were high (I = 0.3462 and H = 0.2325 on average and I = 0.6264, H = 0.4377 at the species level) based on the SSR markers. The expected heterozygosity value of 17 microsatellite loci in 25 crayfish populations was 0.9317, the observed heterozygosity value was 0.9121, and the observed number of alleles per locus was 2.000; and the effective number of alleles per locus was 1.8075. Among the P. clarkii populations, the inbreeding coefficient within populations (Fis) was 02315, overall inbreeding coefficient (Fit) was 0.4438, genetic differentiation coefficient among populations (Fst) was 0.3145 and gene differentiation (Gst) was 0.4785 based on SSR analyses. The cluster analysis results obtained by unweighted pair-group method with arithmetic mean (UPGMA) analysis, principal coordinate analysis (PCoA) and STRUCTURE analysis were similar. A mantel test showed that the isolation-by-distance pattern was not significant. Conclusions: The high Gst among P. clarkii populations is attributed to genetic drift and geographic isolation. The results indicated that more P. clarkii populations should be collected when formulating conservation and aquaculture strategies. (C) 2020 Pontificia Universidad Catolica de Valparaiso. Production and hosting by Elsevier B.V. All rights reserved.
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