Genetic analysis of whole mitochondrial genome of Lateolabrax maculatus (Perciformes: Moronidae) indicates the presence of two populations along the Chinese coast

文献类型： 外文期刊

第一作者： Gong, Jie

作者： Gong, Jie;Chen, Baohua;Li, Bijun;Zhou, Zhixiong;Shi, Yue;Ke, Qiaozhen;Xu, Peng;Gong, Jie;Chen, Baohua;Xu, Peng;Ke, Qiaozhen;Xu, Peng;Zhang, Dianchang

作者机构：

关键词： Adaptation; genetic differentiation; selection

期刊名称：ZOOLOGIA （ 影响因子：0.92； 五年影响因子：1.031 ）

ISSN： 1984-4689

年卷期： 2020 年 37 卷

页码：

收录情况： SCI

摘要： The whole mitochondrial genome of Lateolabrax maculatus (Cuvier, 1828) was used to investigate the reasons for the observed patterns of genetic differentiation among 12 populations in northern and southern China. The haplotype diversity and nucleotide diversity of L. maculatus were 0.998 and 0.00169, respectively. Pairwise F-ST values between populations ranged from 0.001 to 0.429, correlating positively with geographic distance. Genetic structure analysis and haplotype network analysis indicated that these populations were split into two groups, in agreement with geographic segregation and environment. Tajima's D values, Fu's Fs tests and Bayesian skyline plot (BSP) indicated that a demographic expansion event may have occurred in the history of L. maculatus. Through selection pressure analysis, we found evidence of significant negative selection at the ATP6, ND3, Cytb, COX3, COX2 and COX1 genes. In our hypotheses, this study implied that demographic events and selection of local environmental conditions, including temperature, are responsible for population divergence. These findings are a step forward toward the understanding of the genetic basis of differentiation and adaptation, as well as conservation of L. maculatus.

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