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首页> 外文期刊>Journal of Medical Entomology >A preliminary assessment of genetic differentiation of Triatoma dimidiata (Hemiptera: Reduviidae) in Guatemala by random amplification of polymorphic DNA-polymerase chain reaction
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A preliminary assessment of genetic differentiation of Triatoma dimidiata (Hemiptera: Reduviidae) in Guatemala by random amplification of polymorphic DNA-polymerase chain reaction

机译：通过多态性DNA-聚合酶链反应的随机扩增初步评估危地马拉Triatoma dimidiata（Hemiptera：Reduviidae）的遗传分化

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摘要

The population genetics of Triatoma dimidiata (Latreille, 1811) from five different provinces in Guatemala, including three sylvan and three domestic populations, was investigated by random amplification of polymorphic DNA-polymerase chain reaction. There is a high degree of genetic variation in all of the T. dimidiata populations as evidenced by high levels of average expected heterozygosity and polymorphism. Domestic populations are more closely related to each other (D = 0.05-0.085, Nei's genetic distance) than are the sylvan (D = 0.121-0.189). Within the limited sample size of three populations, there was a correlation with geographic and genetic distance for the domestic populations, but not for the sylvan. Surprisingly, one of the sylvan populations was genetically very similar to the domestic populations. The FST demonstrated a high degree of differentiation at the country-wide level (FST = 0.175) and a moderate degree of differentiation within the sylvan (FST = 0.135) or domestic (FST = 0.097) populations. Although these results demonstrated that gene flow is limited between different provinces in Guatemala, hierarchical analysis showed that barriers between the Atlantic and Pacific drainage slopes were not biologically significant limiters of gene flow.
机译：通过随机扩增多态性DNA-聚合酶链反应，研究了危地马拉五个不同省的Triatoma dimidiata（Latreille，1811）的种群遗传学，包括三个森林和三个家庭种群。在所有T. dimidiata种群中都存在高度的遗传变异，这可以通过平均预期的高杂合度和多态性水平来证明。家庭人口之间的亲密关系（D = 0.05-0.085，Nei的遗传距离）比森林家庭（D = 0.121-0.189）更紧密。在三个人口的有限样本量内，家庭人口与地理和遗传距离相关，而西尔万却不相关。出人意料的是，其中一种森林种群在遗传上与家庭种群非常相似。 FST在全国范围内（FST = 0.175）表现出高度的分化程度，而西尔万（FST = 0.135）或国内（FST = 0.097）种群之间的分化程度中等。尽管这些结果表明，危地马拉不同省份之间的基因流量受到限制，但层次分析显示，大西洋和太平洋排水坡之间的障碍并不是基因流量在生物学上的重要限制因素。

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