title: High phylogeographic structure in sylvatic vectors of Chagas disease of the genus Mepraia (Hemiptera: Reduviidae).
abstract: The hematophagous Hemiptera of the subfamily Triatominae are a very diverse group with a variety of morphs, behaviors and distributions. They have great epidemiological importance because many of its members are vectors of the protozoan Trypanosoma cruzi, the agent of Chagas disease. Mepraia is a genus of Triatominae endemic to Chile responsible for transmitting T. cruzi in the sylvatic cycle. Mepraia includes three species, M. gajardoi (18° 30'-26° 30' S) M. spinolai (26° 30'-34° 20' S) and the recently described M. parapatrica in intermediate zones (24° 36'-26° 51' S). Using mitochondrial DNA sequences, we inferred historical processes that led to the current structure of populations. Phylogeographic analyses identified three lineages, congruent with current taxonomy, and populations were highly structured. The times to the most recent common ancestor suggest that M. spinolai is the oldest lineage. We discuss the taxonomic and biogeographic implications of our results.
authors.affiliation: Programa de Biología Celular y Molecular, ICBM, Facultad de Medicina, Universidad de Chile, Casilla 70086, Santiago 7, Chile; Instituto de Biología, Pontificia Universidad Católica de Valparaíso, Valparaíso 2373223, Chile.
authors.forename: Ricardo
authors.initials: R
authors.lastname: Campos
authors.forename: Fernando
authors.initials: F
authors.lastname: Torres-Pérez
authors.forename: Carezza
authors.initials: C
authors.lastname: Botto-Mahan
authors.forename: Ximena
authors.initials: X
authors.lastname: Coronado
authors.forename: Aldo
authors.initials: A
authors.lastname: Solari
mesh_terms: D000818:Animals; D014355:Chagas Disease / Q000635:transmission; D002677:Chile; D019143:Evolution, Molecular; D006239:Haplotypes; D006430:Hemiptera / Q000145:classification* / Q000235:genetics*; D007303:Insect Vectors / Q000145:classification* / Q000235:genetics*; D058974:Phylogeography
keywords: Chagas disease; Chile; Mepraia gajardoi; Mepraia spinolai; Phylogeography; Triatominae vectors