| 邓春兴，周文漪，郜星晨，许忠能，章群.基于线粒体控制区序列的海南
须鲫遗传多样性分析
新基金（21611426）[J].广东农业科学,2014,41(9):151- |
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基于线粒体控制区序列的海南
须鲫遗传多样性分析
新基金（21611426） |
| Genetic diversity of Carassioides cantonensis of Hainan islandbased on mitochondrial control region sequences analysis |
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| DOI： |
| 中文关键词: 须鲫 线粒体控制区 遗传变异 |
| 英文关键词: Carassboides cantonensis mtDNA D-loop genetic variability |
| 基金项目:国家自然科学基金（41071034）；暨南大学科研创 |
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| 摘要点击次数: 2051 |
| 全文下载次数: 789 |
| 中文摘要: |
| 测定了海南岛南渡江和万泉河2 个水系33 尾须鲫线粒体控制区5' 端520 bp 序列，共发现5 个变异位
点，其中简约信息位点4 个，没有插入、缺失，转换颠换比为4，定义了5 个单倍型。万泉河和南渡江群体的单倍型多
样度分别为0.6762(依0.1006)与0.6993(依0.0435)，核苷酸多样度分别为0.00249(依0.001849)与0.00260(依0.001887)，二者
均处于较低水平。中性检验结果显示Fu's Fs 为正值且不显著（0.288，P>0.1），核苷酸不对称分布不呈明显单峰，表明
海南须鲫历史上没有发生快速种群扩张，种群大小相对稳定。2 个群体间没有显著遗传分化（Fst=0.03638，P>0.1），海
南须鲫群体可作为一个管理保护单位。 |
| 英文摘要: |
| Five hundred and twenty bp nucleotide sequences in the 5' terminal part of the mtDNA D-loop control
region of 33 Carassboides cantonensis from 2 populations渊Nandujiang and Wanquanhe冤of Hainan island were determined.
5 mutation sites defined 5 haplotypes, of which 4 sites were parsimony-informatic, and no insertions and deletion was
found, transition transversion ratio was 4. The haplotype diversity of Wanquanhe and NanduJiang group were 0.6762(依
0.1006) and 0.6993(依0.0435), respectively, and the nucleotide diversity were 0.00249(依0.001849) and 0.00260(依0.001887),
respectively, both at a relative low level. Neutral tests showed that the Fu's Fs wasn爷t significant negative (Fu爷s Fs=0.288袁
P>0.1), and mismatch analysis wasn爷t obvious unimodal, which suggested that Carassioides cantonensis in Hainan island
might not have experienced rapid population expansion and they were demographically stable in the history. No significant
genetic differentiation was found between the 2 groups (Fst=0.03638, P>0.1), so they could be maintained as a single
management protection unit. |
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