Smallness of the Panmictic Unit of Triatoma infestans (Hemiptera: Reduviidae)

Simone Frederique Breniere, Marie France Bosseno, Fernando Vargas, Nina Yaksic, François Noireau, Sebastien Noel, Jean Pierre Dujardin, Michel Tibayrenc

Resultado de la investigación: Contribución a una revistaArtículorevisión exhaustiva

27 Citas (Scopus)

Resumen

The population genetic structure of Triatoma infestans (Klug), the principal vector of the causative agent of Chagas disease in Bolivia, was investigated by enzyme electrophoresis at 15 loci, of which 3 were polymorphic. A total of 1,286 adults and nymphs was collected from 19 localities of the Cochabamba (high endemicity) and La Paz (low endemicity) departments. Previous results were confirmed, including a low level of polymorphism (0.20), low genetic distance between geographic areas, and a population structure compatible with an isolation by distance model. However, a high proportion (26.3%) of the surveyed localities showed a significant excess of homozygotes, disputing previous conclusions that considered the village as the probable panmictic unit. The excess of homozygotes was reduced when smaller subunits, such as individual houses or chicken coops, were considered, indicating a Wahlund effect.

Idioma originalInglés
Páginas (desde-hasta)911-917
Número de páginas7
PublicaciónJournal of Medical Entomology
Volumen35
N.º6
DOI
EstadoPublicada - nov. 1998

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