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首页> 外文期刊>The American Journal of Tropical Medicine and Hygiene >New Evidence of the Monophyletic Relationship of the Genus Psammolestes Bergroth, 1911 (Hemiptera, Reduviidae, Triatominae)
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New Evidence of the Monophyletic Relationship of the Genus Psammolestes Bergroth, 1911 (Hemiptera, Reduviidae, Triatominae)

机译:Psammolestes Bergroth,1911(Hemiptera,Reduviidae,Trairiatominae)的新的新证据

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摘要

The genus Psammolestes within the subfamily Triatominae and tribe Rhodniini comprises the species Psammolestes arthuri, Psammolestes coreodes, and Psammolestes tertius, all potential vectors of Chagas disease. A feature of Psammolestes is their close association with birds, which makes them an interesting model for evolutionary studies. We analyzed cytogenetically Psammolestes spp., with the aim of contributing to the genetic and evolutionary knowledge of these vectors. All species of the Psammolestes showed the same chromosomal characteristics: chromocenter formed only by sex chromosomes X and Y, karyotype 2n = 22 and constitutive heterochromatin, and AT base pairs restricted to the sex chromosome Y. These results corroborate the monophyly of the genus and lead to the hypothesis that during the derivation of P. tertius, P. coreodes, and P. arthuri from their common ancestor, there was no reorganization in the number or structure of chromosomes.
机译:亚家族中的Psammolestes和TribeRodniini内的Psammolestess包括物种Psammolestes Arthuri,Psammolestes Coreodes和Psammolestes Tartius,所有潜在的Chagas疾病载体。 PSammolestes的一个特征是他们与鸟类密切关联,这使得它们成为进化研究的有趣模型。 我们分析了细胞源性psammolestes spp。,目的是有助于这些载体的遗传和进化知识。 所有物种的psammolestes都显示出相同的染色体特征:染色剂仅由性染色体x和y形成,核型2n = 22和组成型异铬胺,并且在碱基对中被限制在性染色体y。这些结果证实了属性的单层和铅。 对于假设,在P.Tertius,P. Coreodes和P.Arthuri从其共同的祖先的衍生过程中,染色体的数量或结构没有重组。

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