| 摘要: |
| 采用线粒体D-loop区测序技术, 对巢湖、滆湖、洪泽湖、鄱阳湖和太湖5个地理群体的黄颡鱼(Pelteobagrus fulvidraco)遗传多样性及种群遗传结构进行了研究。结果表明, 890个位点中变异位点有151个, 简约信息位点24个。143个个体共检测到72个单倍型, 平均单倍型多样性指数为0.951±0.011, 核苷酸多样性为指数为0.00614±0.00087。鄱阳湖群体和其它4个湖泊群体的遗传距离相对比较大, 滆湖和巢湖的遗传距离最小, 总体遗传分化指数Fst为0.0896(P<0.01)。群体间基因流系数Nm=2.22, 表明5个黄颡鱼种群间存在着一定的基因流动。 |
| 关键词: 黄颡鱼 线粒体控制区 遗传多样性 |
| DOI：10.11693/hyhz201303029029 |
| 分类号: |
| 基金项目:江苏省科技支撑计划项目, BE2010376 号; 江苏省农业科技自主创新基金项目, CX(11)1036 号 |
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| POPULATION GENETICS IN MITOCHONDRIAL DNA CONTROL REGION FOR FIVE FRESH-WATER YELLOW CATFISH PELTEOBAGRUS FULVIDRACO |
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LIU Peng-Peng1,2, ZHONG Li-Qiang2, PAN Jian-Lin2, CHEN Xiao-Hui2, CHEN You-Ming2, WANG Ming-Hua2, YANG Jia-Xin1
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1.School of Life Science, Nanjing Normal University;2.Freshwater Fisheries Research Institute of Jiangsu Province
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| Abstract: |
| The total mitochondrial D-loop of yellow catfish from 5 fresh-water populations were sequenced. The result show that among 890 sites in total 151 were variable and 24 were parsimony-informative sites. 72 haplotypes were detected from 143 individual. The average haplotype diversity index and nucleotide polymorphism index was 0.951±0.011 and 0.00614±0.00087, respectively. The analysis of genetic distance between 5 populations showed that genetic distance among 5 populations are small ranging 0.00427—0.00989. The genetic distance between Poyang Lake population and others were relatively larger for 0.00758—0.00989, while it was small between those of Guhu Lake and Chaohu Lake for 0.00427. The overall genetic differentiation index (Fst) of 5 populations was 0.0896 (P<0.01), indicating that the intra-group variation was 91.04% and intergroup was 8.96%. The gene flow coefficient (Nm) among 5 populations was 2.22, showing certain gene flow among 5 populations. |
| Key words: Pelteobagrus fulvidraco mitochondrial DNA control region genetic diversity |
