| 中国沿海不同地区泥蚶(Tegillarca granosa)的遗传多样性分析 |
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| 引用本文： | 刘春芳,李翠,张振,王海艳.中国沿海不同地区泥蚶(Tegillarca granosa)的遗传多样性分析[J].海洋与湖沼,2015,46(2):365-371. |
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| 作者姓名： | 刘春芳 李翠 张振 王海艳 |
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| 作者单位： | 1. 中国科学院海洋研究所 青岛 266071;中国科学院大学 北京 100049
2. 中国科学院海洋研究所 青岛 266071 |
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| 基金项目： | 国家自然科学基金项目,40406032号,40876084号,31000948号;中国科学院战略性先导科技专项,XDA1102030304号;中国科学院海洋研究所“一三五”生物多样性项目,2012IO060101号;海洋公益性行业科研专项经费项目,200805069号;国家环境保护部项目,物种10-二-14号。 |
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| 摘 要： | 以采自海南海口、广西防城港、广西北海、广东湛江、福建漳州、山东荣成、山东威海7个地理群体62个泥蚶个体为材料,获取592bp线粒体COI基因片段序列,并进行遗传多样性及分化分析。多态性遗传参数统计显示:62个个体共检测出103个多态性位点,定义了26个单倍型;总群体单倍型多样性指数为0.834,核苷酸多样性指数为0.01665,平均核苷酸差异数为9.85772。7个群体均显示出较丰富的遗传多样性,群体内遗传距离及群体内遗传多样性参数显示中国沿海泥蚶遗传多样性由北向南呈升高趋势,而群体内遗传分化系数也呈现升高的趋势。基于26个单倍型COI序列构建的NJ树和UPGMA树以及基于群体间遗传距离构建的UPGMA树显示,荣成群体和威海群体亲缘关系较近,聚成一小支,而后与漳州群体相聚,然而南方类群并没有聚为独立的一支。
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| 关 键 词： | 泥蚶 COI 遗传多样性 遗传分化 |
| 收稿时间： | 4/7/2014 12:00:00 AM |
| 修稿时间： | 7/6/2014 12:00:00 AM |
GENETIC DIVERSITY OF DIFFERENT POPULATIONS OF TEGILLLARCA GRANOSA IN COASTAL WATERS OF CHINA BASED ON PARTIAL COI GENE SEQUENCES |
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| LIU Chun-Fang,LI Cui,ZHANG Zhen and WANG Hai-Yan.GENETIC DIVERSITY OF DIFFERENT POPULATIONS OF TEGILLLARCA GRANOSA IN COASTAL WATERS OF CHINA BASED ON PARTIAL COI GENE SEQUENCES[J].Oceanologia Et Limnologia Sinica,2015,46(2):365-371. |
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| Authors: | LIU Chun-Fang LI Cui ZHANG Zhen and WANG Hai-Yan |
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| Institution: | Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;University of Chinese Academy of Sciences, Beijing 100049, China,Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China;University of Chinese Academy of Sciences, Beijing 100049, China,Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China and Institute of Oceanology, Chinese Academy of Sciences, Qingdao 266071, China |
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| Abstract: | We collected 62 Tegillarca granosa samples from seven populations i.e., South China in Haikou, Fangchenggang, Beihai, Zhanjiang, and Zhangzhou, and North China in Rongcheng and Weihai in coastal waters, from which 592bp nucleotide sequences of mitochondrial COI gene fragments of T. granosa were obtained, and 103 variable nucleotide positions and 26 haplotypes were revealed in the seven populations. The haplotype diversity (Hd) was 0.834, the nucleotide diversity (Pi) was 0.01665, and the average nucleotide difference (K) was 9.85772. Results show high genetic diversity within populations. The genetic distances and genetic diversity parameters within populations suggested that genetic diversity and genetic differentiation coefficient within T. granosa populations in coastal waters of China increased north to south generally. The dendrograms in the neighbor-joining method based on the sequences of the 26 haplotypes and in the UPGMA (Unweighted Pair Group Method with Arithmetic Mean) method based on genetic distances show close relationship between Rongcheng and Weihai, and then the two populations join a clade with Zhangzhou population, while the southern groups did not form any independent clade. |
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| Keywords: | Tegillarca granosa COI genetic diversity genetic differentiation |
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