| Literature DB >> 21457795 |
Sergio Quisberth1, Etienne Waleckx, Marcelo Monje, Boris Chang, François Noireau, Simone Frédérique Brenière.
Abstract
In Bolivia, the Gran Chaco ecoregion suffers from serious problems of house reinfestation with Triatoma infestans despite vector control by insecticides spraying. In order to identify the origin of the triatomines collected after spraying, the genetic structure of T. infestans populations collected in four neighboring villages, before and after spraying, was analyzed using ITS-2 and mtCytB sequencing. Before spraying, only the mtCytB marker detected genetic differentiation among the 4 populations. After spraying, the mtCytB analysis of the populations from two of the studied villages supported the hypothesis in favor of a local origin for the triatomines in each village. Surprisingly, ITS-2 and mtCytB haplotypes previously found only in Andean areas were also present with high frequencies in the studied populations; these domestic populations of the Gran Chaco seem to be the result of a mixture of "Andean" and "non-Andean" triatomines probably generated by the human passive transport of triatomines from the Andes to the Gran Chaco.Entities:
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Year: 2011 PMID： 21457795 DOI： 10.1016/j.meegid.2011.03.014
Source DB: PubMed Journal: Infect Genet Evol ISSN： 1567-1348 Impact factor: 3.342