Waleckx Etienne, Salas R., Huaman N., Buitrago R., Bosseno Marie-France, Aliaga Claudia, Barnabé Christian, Rodriguez R., Zoveda F., Monje Marcelo, Baune M., Quisberth S., Villena E., Kengne Pierre, Noireau François, Brenière Simone Frédérique. (2011). New insights on the Chagas disease main vector Triatoma infestans (Reduviidae, Triatominae) brought by the genetic analysis of Bolivian sylvatic populations. Infection Genetics and Evolution, 11 (5), p. 1045-1057. ISSN 1567-1348.
Titre du document
New insights on the Chagas disease main vector Triatoma infestans (Reduviidae, Triatominae) brought by the genetic analysis of Bolivian sylvatic populations
Année de publication
2011
Auteurs
Waleckx Etienne, Salas R., Huaman N., Buitrago R., Bosseno Marie-France, Aliaga Claudia, Barnabé Christian, Rodriguez R., Zoveda F., Monje Marcelo, Baune M., Quisberth S., Villena E., Kengne Pierre, Noireau François, Brenière Simone Frédérique
Source
Infection Genetics and Evolution, 2011,
11 (5), p. 1045-1057 ISSN 1567-1348
Triatoma infestans is the main and most widespread vector of Chagas disease in South America. For the first time, a large sample of sylvatic populations of T. infestans was analyzed by ITS-2 and mtCytB sequencing. ITS-2 showed a low level of polymorphism but revealed a dichotomy between the Andean and non-Andean sylvatic populations. On the contrary, mtCytB sequences showed a high polymorphism (19 haplotypes determined by 35 variable sites) revealing a strong structuring between most of the sylvatic populations and possible ancient isolation and bottleneck in the Northern Andes. The dichotomy Andean vs. non-Andean populations was not observed with this marker. Moreover, mtCytB haplotype genealogies showed that the non-Andean haplotypes would have derived from the Andean ones, supporting somewhat an Andean origin of the species. Nevertheless, a non-Andean origin could not be discarded because a remarkable genetic diversity was found in the non-Andean sample. The comparison of the sylvatic haplotypes with the domestic ones from GenBank suggested multiple events of T. infestans domestication in Andean and non-Andean areas, instead of a major and unique domestication event in the Bolivian Andes, as previously proposed.
Plan de classement
Entomologie médicale / Parasitologie / Virologie [052]
Description Géographique
BOLIVIE
Localisation
Fonds IRD [F B010053676] ;
La Paz
Identifiant IRD
fdi:010053676
