根据mtDNA控制区序列分析野生唇 的种群遗传结构
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中国水产科学研究院 黑龙江水产研究所, 黑龙江 哈尔滨 150070

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佟广香, (1978−), 女, 助理研究员, 硕士, 主要从事水产动物遗传育种研究. Email: tong2200@163.com

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黑龙江省科委重点研究项目(GC05B509); 黑龙江水产研究所基本科研业务费专项资助课题(2007HSYZX-YZ-02).


Population structure of Hemibarbus labeo as inferred from mtDNA control region sequence
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Heilongjiang River Fisheries Research Institute, Chinese Academy of Fishery Sciences, Harbin 150070,China

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    摘要:

    个地理片段的变异个变异位点。个单倍型个地理群体是HT2群体以上变异均达到显著水平分析结果表明, 嘉荫(YRSC)这与单倍型网络的分析结果一致 黑龙江流域的 其他地理并且部分地理

    Abstract:

    Genetic diversity and structure were investigated to explore the phylogeography and evolution of from five different river systems, including Wusuli River, Yangtze Rive, Heilongjiang River, Yalu River and Mudan River. The mtDNA control region was used to analyze genetic differentiation of eight geographical populations (=42) in this study. Results showed that 26 variation sites existed in a 404 bp sequence with variation rate of 6.43% and average nucleotide diversity of 0.011 5. The sequence information identified 18 haplotypes in the control region gene. Eight geographical populations were evolved through a mode of center outward radiation based on DWRHT1 and DWRHT2 haplotype. AMOVA analysis showed that the variation rate was 59.29% within populations, 23.50% among populations from the same river system and 17.20% among populations from the different river system. There was significant difference within different populations, among populations from the same river system and populations from different river systems ( of control region sequence analysis among populations showed that there was significant difference among several populations from the same river system. Cluster analysis showed that maximum-parsimony method (MP) and maximum likelihood ratio method (ML) results were basically consistent, which suggested that most individuals from HRJY and YRSC population clustered together and individuals from YRLJ population clustered into a single branch. Meanwhile, cluster analysis results were found to be consistent with haplotype parsimony network analysis. These results suggested abundant genetic diversity existed among populations. However, the population size was decreased due to environmental pollution and overexploitation in recent years. In addition, H. labeo from other river systems had evolved to different directions based on haplotypes from Heilongjiang River and formed their unique haplotypes during the long-term evolution and geographical isolation.

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佟广香,匡友谊,尹家胜,耿龙武,徐伟.根据mtDNA控制区序列分析野生唇 的种群遗传结构[J].中国水产科学,2011,18(3):500-507
TONG Guangxiang, KUANG Youyi, YIN Jiasheng, GENG Longwu, XU wei. Population structure of Hemibarbus labeo as inferred from mtDNA control region sequence[J]. Journal of Fishery Sciences of China,2011,18(3):500-507

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  • 在线发布日期: 2011-05-09
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