Please use this identifier to cite or link to this item: https://www.arca.fiocruz.br/handle/icict/25457
Title: Sylvatic and peridomestic populations of Triatoma pseudomaculata are not significantly structured by habitat, as revealed by two genetic markers
Authors: Costa, Felipe Anibal Carvalho
Santos, Silvia M. dos
Pires, Marize Quinhones
Lopes, Catarina Macedo
Noireau, François
Pacheco, Raquel S.
Affilliation: Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ. Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ. Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ. Brasil.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ. Brasil.
Institut de Recherche pour le Développement. Montpellier, France / Universidad Mayor San Simón. Facultad de Medicina. Cochabamba, Bolivia.
Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Rio de Janeiro, RJ. Brasil.
Abstract: Chagas disease remains a public health concern in Brazil and other Latin American countries, mainly due to the potential domiciliation of native triatomine species. We analyzed the genetic variability of Triatoma pseudomaculata in sylvatic and peridomestic ecotopes throughout three localities in the northeastern state of Bahia, Brazil. We studied polymorphisms generated by random amplified polymorphic DNA (RAPD) and isoenzyme electrophoresis analyses. Based on RAPD analysis, each specimen was assigned to one of three genetic clusters. Although all sylvatic specimens from one locality were grouped into the same cluster, sylvatic and peridomestic specimens from the other two localities were broadly distributed between the remaining two clusters, suggesting that geographic population structuring was not occurring. Furthermore, isoenzyme analysis suggested that distinct populations were in Hardy-Weinberg equilibrium. Low statistical values for Wright’s Fst index also supported the absence of population structuring and suggested the occurrence of panmixia. We conclude that genetic flow occurs between sylvatic and peridomestic T. pseudomaculata populations, probably as a consequence of passive and active dispersion of the insects, associated with deforestation and anthropic transformations.
Keywords: Chagas Disease
Triatoma pseudomaculata
RAPD
isoenzymes
keywords: Doença de Chagas
Triatoma pseudomaculata
Isoenzimas
Técnica de Amplificação ao Acaso de DNA Polimórfico
Issue Date: 2010
Publisher: Wiley
Citation: COSTA, Felipe Anibal Carvalho; et al. Sylvatic and peridomestic populations of Triatoma pseudomaculata are not significantly structured by habitat, as revealed by two genetic markers. Journal of Vector Ecology, v.35, n.2, p.295-300, 2010.
ISSN: 1081-1710
Copyright: restricted access
Appears in Collections:IOC - Artigos de Periódicos

Files in This Item:
File Description SizeFormat 
marize_pires_etal_IOC_2010.pdf225.75 kBAdobe PDF    Request a copy


FacebookTwitterDeliciousLinkedInGoogle BookmarksBibTex Format mendeley Endnote DiggMySpace

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.