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首页> 外文期刊>The American Journal of Tropical Medicine and Hygiene >Genetic variation of North American triatomines (Insecta: Hemiptera: Reduviidae): Initial divergence between species and populations of chagas disease vector
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Genetic variation of North American triatomines (Insecta: Hemiptera: Reduviidae): Initial divergence between species and populations of chagas disease vector

机译:北美三atomines(Insecta:半翅目:Reduviidae)的遗传变异:南美锥虫病病媒的物种和种群之间的初始差异

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摘要

The triatomines vectors of Trypanosoma cruzi are principal factors in acquiring Chagas disease. For this reason, increased knowledge of domestic transmission of T. cruzi and control of its insect vectors is necessary. To contribute to genetic knowledge of North America Triatominae species, we studied genetic variations and conducted phylogenetic analysis of different triatomines species of epidemiologic importance. Our analysis showed high genetic variations between different geographic populations of Triatoma mexicana, Meccus longipennis, M. mazzottii, M. picturatus, and T. dimidiata species, suggested initial divergence, hybridation, or classifications problems. In contrast, T. gerstaeckeri, T. bolivari, and M. pallidipennis populations showed few genetics variations. Analysis using cytochrome B and internal transcribed spacer 2 gene sequences indicated that T. bolivari is closely related to the Rubrofasciata complex and not to T. dimidiata. Triatoma brailovskyi and T. gerstaeckeri showed a close relationship with Dimidiata and Phyllosoma complexes.
机译:克氏锥虫的三atomines载体是获得恰加斯病的主要因素。因此,有必要增加对克鲁斯锥虫家庭传播及其昆虫媒介的控制的了解。为了对北美Triatominae物种的遗传知识有所贡献,我们研究了遗传变异并对具有流行病学重要性的不同Triatomines物种进行了系统进化分析。我们的分析表明,墨西哥Triatoma mexicana,Meccus longipennis,M。mazzottii,M。picturatus和T. dimidiata物种在不同地理种群之间存在高度遗传变异,这表明存在初始差异,杂交或分类问题。相反,T。gerstaeckeri,T。bolivari和M. pallidipennis种群显示很少的遗传变异。使用细胞色素B和内部转录的spacer 2基因序列进行的分析表明,玻利虫T. bolivaris与Rubrofasciata复合体密切相关,而与丁香T. dimidiata不相关。 Triatoma brailovskyi和T. gerstaeckeri与Dimidiata和Phyllosoma复合体关系密切。

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