中国媒介生物学及控制杂志 ›› 2010, Vol. 21 ›› Issue (2): 98-101.

• 论著 • 上一篇    下一篇

应用微卫星DNA标志研究我国大劣按蚊群体的遗传差异

王冬1,马雅军1,周红宁2   

  1. 1 第二军医大学病原生物学教研室(上海 200433); 2 云南省寄生虫病防治研究所
  • 收稿日期:2009-11-17 出版日期:2010-04-20 发布日期:2010-04-20
  • 通讯作者: 马雅军,Email: yajunm@yahoo.com.cn
  • 作者简介:王冬(1980-),男,硕士,现工作单位为解放军309医院检验科。
  • 基金资助:

    国家自然科学基金委员会-云南省人民政府联合基金(U0932604)

Study on the genetic differences among Anopheles dirus sensu lato (Diptera: Culicidae) in China using microsatellite DNA markers

 WANG Dong, MA Ya-Jun, ZHOU Hong-Ning   

  1. 1 Department  of  Pathogen  Biology, Second  Military  Medical  University, Shanghai 200433, China; 2 Institute of Parasitic Disease Control of Yunnan Province
  • Received:2009-11-17 Online:2010-04-20 Published:2010-04-20
  • Contact: MA Ya?jun, Email: yajunm@yahoo.com.cn
  • Supported by:

    Supported by the National Natural Science Foundation of China?Yunnan Jiont Fund (No. U0932604)

摘要:

目的 应用微卫星DNA分子标志阐明我国大劣按蚊(广义)群体的遗传差异水平。方法 研究样本包括经分子鉴别的大劣按蚊(海南省实验室品系和海南省毛阳野生群体)和大劣按蚊D种(云南省江城和云南省勐腊野生群体),扩增10个多态的微卫星DNA位点,用Arlequin软件分析和计算相关指标。结果 对89个大劣按蚊样本进行微卫星位点的扩增,等位基因数范围为1~32个,平均值为3.60~25.20,并非所有微卫星位点在所有群体中均呈现多态性。群体的平均期望杂合度和观察杂合度的范围分别为0.49~0.72和0.36~0.58,两者在海南省群体中均为最低。成对群体间的FST值为负值或很小,提示群体间未出现遗传分化。分级AMOVA计算结果显示,大劣按蚊群体内的变异占总变异的103.29%,种内变异为负值(-3.97%),种间变异仅占总变异的0.67%。结论 大劣按蚊与大劣按蚊D种内和种间遗传差异均非常小,微卫星DNA的变异主要在个体间。

关键词: 大劣按蚊(广义), 微卫星DNA, 群体遗传差异

Abstract:

Objective Microsatellite DNA molecular markers were used in the present study to identify the genetic diversity  of  Anopheles dirus sensu lato  in  China. Methods Molecularly  identified, An. dirus (laboratory  strains  in  Hainan province and wild population from Maoyang, Hainan) and species D of An. dirus (wild populations from Jiangcheng and Mengla, Yunnan province) constituted the samples, of which ten polymorphic microsatellite DNA loci were amplified and calculation of relevant index were performed using Arlequin  software. Results The  amplification  of  microsatellite  loci  for  89  samples  of An. dirus s.l. revealed a range of alleles from 1 to 32, with an average of 3.60-25.20. Not all microsatellite loci in each populations demonstrated polymorphism. The average expected heterozygosity and the observed heterozygosity were 0.49-0.72 and 0.36-0.58, respectively, being the lowest in Hainan province. The FST value between paired populations was negative or very small, suggesting that genetic differentiation did not occur among the populations. Hierarchical AMOVA calculations showed that the intrapopulatim variation of An. dirus s.l. amounted to 103.29% of the total variation, the intraspecific variation negative (-3.97%), and the interspecific variation accounted for only 0.67% of the total variance. Conclusion The intra- and interspecific genetic differences of An. dirus s.s. and An. dirus  species D were trivial, microsatellite DNA variations mostly present in individuals.

Key words: Anopheles dirus (sensu lato), Microsatellite DNA, Population genetic differences

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