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福建近海竹荚鱼线粒体DNA控制区和细胞色素b遗传多态性
引用本文:牛素芳,苏永全,王军,张丽艳,曾华嵩,张曼.福建近海竹荚鱼线粒体DNA控制区和细胞色素b遗传多态性[J].中国水产科学,2011,18(1):66-74.
作者姓名:牛素芳  苏永全  王军  张丽艳  曾华嵩  张曼
作者单位:厦门大学,海洋与环境学院,福建,厦门,361005
摘    要:测定了捕自福建近海闽东渔场和闽南渔场竹荚鱼(Trachurus japonicus)的线粒体DNA(mtDNA)控制区和细胞色素b基因(cyt 6)序列.获得了长度为861~866 bp的控制区全序列.60个样本中共检测到66个变异位点和53个单倍型,平均单倍型多样性(h)为0.993,核苷酸多样性(π)为1.093.930 bp的cyt 6部分序列共有37个变异位点,从41个样本中得到25个单倍型,平均单倍型多样性(h)和核苷酸多样性(h)分别为0.937和0.3360 cyt b片段编码330个氨基酸,氨基酸序列无变异位点,仅有1个氨基酸单倍型.竹荚鱼闽南群体mtDNA序列的遗传多样性高于闽东群体.构建的单倍型系统树未出现明显的以地方群体为单位的家系式分支或者聚簇,群体间的遗传距离(0.01)也较小.分子方差分析(AMOVA)显示,2个群体的遗传变异绝大部分来自群体内部,群体间无显著遗传分化.中性检验和核苷酸不配对分析显示,福建近海竹荚鱼近期经历过种群扩张.种群扩张、扩散能力和东海环流可能促进闽东渔场和闽南渔场竹荚鱼群体间频繁的基因交流,并导致群体间较高的遗传同质性.

关 键 词:竹荚鱼  福建近海  控制区  遗传多样性  遗传结构
修稿时间:2011/1/13 0:00:00

Genetic polymorphism of mitochondrial control region and cyt b in Trachurus japonicus from Fujian coastal waters
NIU Sufang,SU Yongquan,WANG Jun,ZHANG Liyan,ZENG Huasong,ZHANG Man.Genetic polymorphism of mitochondrial control region and cyt b in Trachurus japonicus from Fujian coastal waters[J].Journal of Fishery Sciences of China,2011,18(1):66-74.
Authors:NIU Sufang  SU Yongquan  WANG Jun  ZHANG Liyan  ZENG Huasong  ZHANG Man
Institution:NIU Sufang,SU Yongquan,WANG Jun,ZHANG Liyan,ZENG Huasong,ZHANG Man College of Oceanography and Environmental Science,Xiamen University,Xiamen 361005,China
Abstract:Trachurus japonicus is a pelagic fish in Carangidae family mainly distributing in coastal waters of China,Japan and Korea.It has been an important commercially marine fish in China since 1960s.But the natural population genetics and resource quantity of T.japonicas have been declined rapidly due to over-fishing,degrada-tion of its natural habitats and so on in recent years,whereas little knowledge is available about its population ge-netic structure.The distribution of genetic diversity and genetic structur...
Keywords:cyt b
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