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| 中沙和南沙群岛密点胡椒鲷的种群分析 | |
| 引用本文： | 孙冬芳,卢伟华,艾红,李希国,董丽娜,陈国宝,李永振.中沙和南沙群岛密点胡椒鲷的种群分析[J].广东农业科学,2010,37(5):4-7. |
| 作者姓名： | 孙冬芳 卢伟华 艾红 李希国 董丽娜 陈国宝 李永振 |
| 作者单位： | 1. 中国水产科学院南海水产研究所,广东,广州,510300;上海海洋大学水产与生命学院,上海,201306 2. 东莞市海洋与渔业环境监测站,广东东莞,523939 3. 中国水产科学院南海水产研究所,广东,广州,510300 |
| 基金项目： | 科技部社会公益研究专项资金项目，国家科技基础性工作重点项目，广东省科技计划项目 |
| 摘 要： | 对中国南海中沙群岛和南沙群岛采集的2个珊瑚礁栖性鱼类密点胡椒鲷(Plectorhynchus gaterinus)群体共19尾的mtDNA控制区核苷酸序列进行了扩增分析,获得了长度为510bp的同源序列,2个群体中共检测到变异位点31个,占全部序列的6.08%,2个群体共检测到15种单倍型。AMOVA分析表明,群体间的遗传变异仅占总遗传变异的1.97%,而98.03%的遗传变异源于群体内。2个密点胡椒鲷群体间的分化指数(Fst)仅为0.012,群体分化程度很低。以线粒体DNA控制区序列构建的NJ树揭示,2个群体的个体基本是随机交叉聚类,各群体内的个体均未单独成群,不能形成明显的类群分支。以上结果表明,密点胡椒鲷群体间遗传相似性较大,且存在较强的基因交流,尽管中沙和南沙群岛地理隔离明显,距离较大,但两个群岛的密点胡椒鲷地理分化不明显,仍可认为是一个大的种群。 |
| 关 键 词： | 密点胡椒鲷 种群分析 mtDNA控制区 |
Population genetic structure of coral reef species Plectorhynchus gaterinus in Zhongsha and Nansha Islands |
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| SUN Dong-fang,LU Wei-hua,AI Hong,LI Xi-guo,DONG Li-na,CHEN Guo-bao,LI Yong-zhen.Population genetic structure of coral reef species Plectorhynchus gaterinus in Zhongsha and Nansha Islands[J].Guangdong Agricultural Sciences,2010,37(5):4-7. | |
| Authors: | SUN Dong-fang LU Wei-hua AI Hong LI Xi-guo DONG Li-na CHEN Guo-bao LI Yong-zhen |
| Institution: | SUN Dong-fang1,2,LU Wei-hua3,AI Hong1,LI Xi-guo3,DONG Li-na1,CHEN Guo-bao1,LI Yong-zhen1 (1. South China Sea Fisheries Research Institute,Chinese Academy of Fishery Sciences,Guangzhou 510300,China,2. College of Fisheries and Life,Shanghai Ocean University,Shanghai 201306,3. Dongguan Ocean and Fishery Environment Monitioring Station,Dongguan 523079,China) |
| Abstract: | The population genetic structure and the dispersal ability of Plectorhynchus gaterinus from South China Sea were examined with a 510 bp segment of mtDNA control region. A total of 19 individuals were collected from 14 coral reefs in Zhongsha and Nansha archipelagos and 15 haplotypes were obtained. There were 31 variation sites in those gene fragments, and the mutation rate was 6.08%. Analysis of molecular variance indicated that large mtDNA differentiation occurred within populations (98.03%),and only 1.97%... |
| Keywords: | Plectorhinchus gaterinus population genetic structure mitochondrial D-loop |
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