Volume 99, Issue 6
  • ISSN: 0002-9637
  • E-ISSN: 1476-1645



The genus within the subfamily Triatominae and tribe Rhodniini comprises the species , , and , all potential vectors of Chagas disease. A feature of is their close association with birds, which makes them an interesting model for evolutionary studies. We analyzed cytogenetically spp., with the aim of contributing to the genetic and evolutionary knowledge of these vectors. All species of the showed the same chromosomal characteristics: chromocenter formed only by sex chromosomes X and Y, karyotype 2 = 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 , , and from their common ancestor, there was no reorganization in the number or structure of chromosomes.


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  • Received : 06 Feb 2018
  • Accepted : 07 Apr 2018
  • Published online : 15 Oct 2018

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