基于cox1序列的中国6个花鲈野生群体遗传多样性Population Genetic Diversity of Spotted Sea Bass (Lateolabrax maculatus) from China Based on Mitochondrial cox1 Gene Sequence
范嗣刚,黄皓,王鹏飞,闫路路,赵超,张博,邱丽华
摘要(Abstract):
【目的】利用细胞色素C氧化酶1基因(cox1)序列片段研究中国6个花鲈(Lateolabrax maculatus)野生群体的遗传多样性和遗传结构。【方法】用PCR方法获得花鲈个体的cox1序列,测序后,用MEGA X、DnaSP6.12和Arlequin 3.01等软件进行数据分析。【结果与结论】在6个花鲈群体229个样品共检测到48个多态性位点和50个单倍型。单倍型多样性为0.799~0.888,核苷酸多样性为0.001 6~0.002 7。6个花鲈群体遗传分化指数(Fst)为-0.008 1~0.176 7。分子方差分析显示,遗传分化90.98%来自群体内,9.02%来自群体间。邻接系统进化树显示6个花鲈群体分为两大支。单倍型邻接树和单倍型网络关系图结果表明,未检测到有地理谱系结构的单倍型。中性检验显示,花鲈群体可能经历过种群扩张。
关键词(KeyWords): 花鲈;cox1序列;遗传多样性;遗传结构
基金项目(Foundation): 国家自然科学基金(31802281);; 广东省重点领域研发计划项目(2021B0202020002);; 中国水产科学研究院基本科研业务费专项(2020TD21);; 广州市科技计划项目(202102020487);; 广州市农村科技特派员项目(20212100051);; 中央级公益性科研院所基本科研业务费专项(2021TS03;2021SD11)
作者(Author): 范嗣刚,黄皓,王鹏飞,闫路路,赵超,张博,邱丽华
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