title: "Andean" and "non-Andean" ITS-2 and mtCytB haplotypes of Triatoma infestans are observed in the Gran Chaco (Bolivia): population genetics and the origin of reinfestation.
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.
authors: MIVEGEC, Université de Montpellier, CNRS 5290, IRD 224, Maladies Infectieuses et Vecteurs, Ecologie, Génétique, Evolution et Contrôle, Institut de Recherche Pour le Développement, Representation in Bolivia, Av Hernando Siles No 5290, Esq Calle 7 Obrajes, CP 9214 La Paz, Bolivia.
authors: Sergio
authors: S
authors: Quisberth
authors: Etienne
authors: E
authors: Waleckx
authors: Marcelo
authors: M
authors: Monje
authors: Boris
authors: B
authors: Chang
authors: François
authors: F
authors: Noireau
authors: Simone Frédérique
authors: SF
authors: Brenière
mesh_terms: D000818:Animals; D001838:Bolivia; D045303:Cytochromes b / Q000235:genetics*; D004247:DNA / Q000235:genetics; D021901:DNA, Intergenic / Q000235:genetics*; D003710:Demography; D014644:Genetic Variation; D006239:Haplotypes / Q000235:genetics*; D008928:Mitochondria; D010802:Phylogeny; D014224:Triatoma / Q000235:genetics*
chemical_list: D021901:DNA, Intergenic; D004247:DNA; D045303:Cytochromes b