Please use this identifier to cite or link to this item: https://www.arca.fiocruz.br/handle/icict/6705
Title: Dynamics between sylvatic, peridomestic and domestic populations of Triatoma brasiliensis (Hemiptera: Reduviidae) in Ceara State, Northeastern Brazil
Authors: Borges, Erika Carime
Dujardin, Jean Pierre
Schofield, Chris John
Romanha, Álvaro José
Diotaiuti, Liléia Gonçalves
Affilliation: Fundação Oswaldo Cruz. Centro de Pesquisas Rene Rachou. Belo Horizonte, MG, Brazil / Fundação Oswaldo Cruz. Instituto Oswaldo Cruz. Departamento de Bioquímica e Biologia Molecular. Rio de Janeiro, RJ, Brasil.
Unite Mixte de Recherche Center National de Recherche Scientifique. Institut Français de Recherche Scietifique pour le Developpment em Cooperation. Montpellier, France.
London School of Hygiene and Tropical Medicine. Department of Medical Parasitology. London, UK.
Fundação Oswaldo Cruz. Centro de Pesquisas Rene Rachou. Belo Horizonte, MG, Brazil.
Fundação Oswaldo Cruz. Centro de Pesquisas Rene Rachou. Belo Horizonte, MG, Brazil.
Abstract: Triatoma brasiliensisis the most important Chagas disease vector in the drier regions of the “Brazilian Caatinga”, colonizing both sylvatic and domestic environments, usually forming abundant colonies. Control trials using insecticides against domestic and peridomestic populations suggest that the T. Brasiliensis has a high capacity to repopulate treated habitats from the neighboring sylvatic populations, making its elimination more complex. The aim of this work was to determine genetic variability among sylvatic, peridomestic and domestic populations ofT. brasiliensisusing head morphometry and random amplified polymorphic DNA (RAPD). Both morphometric analysis and RAPD patterns showed a separation between sylvatic and domestic populations, being the peridomestic ones between them. Based on this data, we suggest that there exists a flow between natural and artificial environments, being the peridomestic population mainly responsible for this interchange. It is possible that the peridomestic environment is maintaining the variability on the insects found on artificial habitats, which guarantee T. Brasiliensis success on adaptation in both environments and also increase the risk of introduction of new Trypanosoma cruzis trains in the domestic cycle of Chagas disease in this region
Keywords: Triatoma brasiliensis
Chagas disease
Head morphometry
RAPD
Populational dynamics
Gene flow
Issue Date: 2005
Citation: BORGES, Erika Carime et al. Dynamics between sylvatic, peridomestic and domestic populations of Triatoma brasiliensis (Hemiptera: Reduviidae) in Ceara State, Northeastern Brazil. Acta Trop., v. 93, n. 1, p. 119-126, Jan. 2005.
ISSN: 0001-706X
Copyright: restricted access
Appears in Collections:IOC - Artigos de Periódicos
MG - IRR - Artigos de Periódicos

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