Document Detail

Active dispersal by wild Triatoma infestans in the Bolivian Andes.
MedLine Citation:
PMID:  17550473     Owner:  NLM     Status:  MEDLINE    
Triatoma infestans is the main vector of Chagas disease and target of control programmes in the Southern Cone countries. So far Bolivia is the only country where true T. infestans wild foci are documented. The dispersal ability for wild T. infestans was studied at microgeographical scale in Bolivian Andes, to assess the possibility for wild populations to actively recolonize insecticide-treated villages. Nine microsatellite loci were used to detect the extent of gene flow between neighbouring collecting sites. The detection of restricted gene flow between close but distinct sylvatic sites supports the hypothesis that wild T. infestans does not disperse by flying at high altitude (2,750 m asl). It gradually disperses over small distances by walking within a 'patch' of continuous land cover. The genetic differentiation detected between sylvatic and domestic populations suggests a limited short-term role of wild insects in the process of recolonization of insecticide-treated houses in the Andes.
Wilfrid Richer; Pierre Kengne; Mirko Rojas Cortez; Marie Mathilde Perrineau; Anna Cohuet; Didier Fontenille; François Noireau
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Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't    
Journal Detail:
Title:  Tropical medicine & international health : TM & IH     Volume:  12     ISSN:  1360-2276     ISO Abbreviation:  Trop. Med. Int. Health     Publication Date:  2007 Jun 
Date Detail:
Created Date:  2007-06-06     Completed Date:  2007-07-09     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  9610576     Medline TA:  Trop Med Int Health     Country:  England    
Other Details:
Languages:  eng     Pagination:  759-64     Citation Subset:  IM    
Unité de Recherche 016, Institut de Recherche pour le Développement (IRD), Montpellier, France.
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MeSH Terms
Bolivia / epidemiology
Chagas Disease / epidemiology,  transmission*
Gene Amplification / genetics
Insect Vectors / genetics*
Linkage Disequilibrium / genetics
Microsatellite Repeats / genetics
Population Growth
Rural Health
Triatoma / genetics*

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine

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