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    谢少林, 王超, 吕子君, 李正光, 石忍耐, 邹记兴. 基于线粒体控制区Dloop序列的长臀种群遗传结构分析[J]. 华南农业大学学报, 2016, 37(1): 8-13. DOI: 10.7671/j.issn.1001-411X.2016.01.002
    引用本文: 谢少林, 王超, 吕子君, 李正光, 石忍耐, 邹记兴. 基于线粒体控制区Dloop序列的长臀种群遗传结构分析[J]. 华南农业大学学报, 2016, 37(1): 8-13. DOI: 10.7671/j.issn.1001-411X.2016.01.002
    shu
    XIE Shaolin, WANG Chao, LV Zijun, LI Zhengguang, SHI Rennai, ZOU Jixing. Analysis of population genetic structure of Cranoglanis based on mitochondrial Dloop sequences[J]. Journal of South China Agricultural University, 2016, 37(1): 8-13. DOI: 10.7671/j.issn.1001-411X.2016.01.002
    Citation: XIE Shaolin, WANG Chao, LV Zijun, LI Zhengguang, SHI Rennai, ZOU Jixing. Analysis of population genetic structure of Cranoglanis based on mitochondrial Dloop sequences[J]. Journal of South China Agricultural University, 2016, 37(1): 8-13. DOI: 10.7671/j.issn.1001-411X.2016.01.002
    shu

    基于线粒体控制区Dloop序列的长臀种群遗传结构分析

    Analysis of population genetic structure of Cranoglanis based on mitochondrial Dloop sequences

      摘要
    • 摘要:
      目的 了解长臀 Cranoglanis 3个种群的野生资源状况，并对3个种群的物种有效性进行分析。
      方法 采用线粒体控制区Dloop基因序列测定技术, 分析了珠江水系、海南水系和越南红河水系长臀种群的群体遗传结构及其变异。
      结果 在检测的84个个体中共得到43个单倍型，呈现出较高的单倍型多样性与较为贫乏的核苷酸多样性，其中海南长臀 C. multiradiatus群体的单倍型多样性(Hd=0.871)和核苷酸多样性(Pi=0.006 4)最低；Tajima’s D中性检验以及核苷酸不配对分析均表明，3个长臀群体趋于稳定，未经历过大规模的种群扩张。Fst分析发现，海南长臀同珠江长臀 C. bouderius、红河长臀 C. henrici产生了一定的遗传分化，而珠江和红河群体未发现明显遗传分化，从遗传距离来看，珠江和红河长臀净遗传距离为0.000。
      结论 长臀野生资源较为贫乏，且海南群体最为严重；认为应将珠江长臀和红河长臀归为同一亚种长臀 C. bouderius，而海南长臀作为长臀的另一个亚种。

       

      Abstract:
      Objective In order to understand the current situation of wild resources for three Cranoglanis populations and to evaluate the species validities of three species.
      Method The genetic structure and genetic variation of three Cranoglanis populations (C. multiradiatus, C. bouderius and C. henrici) were investigated by sequencing the Dloop genes in the mitochondrial control region.
      Result Among 84 individuals from the three populations, fourty-three hapotypes were detected, indicating a relatively high haplotype diversity and low nucleotide diversity. The lowest hapotype diversity (Hd) and nucleotide diversity (Pi) were both found in C. multiradiatus group(Hd=0.871, Pi=0.006 4). Tajima's D neutral test and nucleotide mismatch distribution analysis showed that the three populations were getting stable without experincing any large-scale expansion. Fst analysis suggested that C. multiradiatus had certain genetic differentiation compared to C. bouderius and C. henrici, while the latter two did not have any obvious differentiation from each other. The genetic distance between C. bouderius and C. henrici was 0.000.
      Conclusion The wild resources for Cranoglanis are relatively poor and the case in C. multiradiatus is the most serious. C. bouderius and C. henrici are considered to be one subspecies, as well as C. multiradiatus being another subspecies of Cranoglanis.

       

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