Noireau François, Gutierrez T., Flores R., Brenière Simone Frédérique, Bosseno Marie-France, Wisnivesky-Colli C. (1999). Ecogenetics of Triatoma sordida and Triatoma guasayana (Hemiptera : Reduviidae) in the Bolivian Chaco. Memorias do Instituto Oswaldo Cruz, 94 (4), p. 451-457. ISSN 0074-0276.
Titre du document
Ecogenetics of Triatoma sordida and Triatoma guasayana (Hemiptera : Reduviidae) in the Bolivian Chaco
Année de publication
1999
Type de document
Article
Auteurs
Noireau François, Gutierrez T., Flores R., Brenière Simone Frédérique, Bosseno Marie-France, Wisnivesky-Colli C.
Source
Memorias do Instituto Oswaldo Cruz, 1999,
94 (4), p. 451-457 ISSN 0074-0276
Triatoma guasayana and two putative cryptic species pertaining to T. sordida complex (named groups 1 and 2) occur in sympatry in the Bolivian Chaco. Using multilocus enzyme electrophoresis and subsequent genetic analysis, our work assesses their population distribution and dispersal capacity in domestic, peridomestic, and silvatic environments. Our collections by light trap in the silvatic environment indicated a predominance of T. guasayana and T. sordida group 2 and a lesser abundance of T. sordida group 1 (less than or equal to 10% of the total of captures). Their similar distribution in two silvatic areas 80 km apart supports the hypothesis of their homogeneous dispersal through the Bolivian Chaco. The distribution of T. guasayana and T. sordida groups 1 and 2 was similar between silvatic environment and peridomestic ecotopes where 25% of positive places were occupied by two or three species. Bromeliads were confirmed as favorable shelter for T. guasayana but were free of T. sordida. T. sordida group 1 and to a lesser extent T. guasayana would be more invasive vectors for houses than T. sordida group 2. The spatial partition in the three species sampled in two distant sites suggested a reduced dispersive capacity. (Résumé d'auteur)
Plan de classement
Répartition et bioécologie des phlébotomes [052GLOTRY01]
Descripteurs
INSECTE NUISIBLE ; VECTEUR ; STRUCTURE DE POPULATION ; DISTRIBUTION SPATIALE ; GENETIQUE DE POPULATION ; ANALYSE GENETIQUE ; ELECTROPHORESE ; ISOENZYME ; ZONE FORESTIERE
