Population genetic structure and competence as a vector for dengue type 2 virus of Aedes aegypti and Aedes albopictus from Madagascar.

Autor(es): Vazeille M; Mousson L; Rakatoarivony I; Villeret R; Rodhain F; Duchemin J B; Failloux A B

Resumo: Starch gel electrophoresis was used to assess the polymorphism of 7 isoenzymes in single mosquitoes (field-collected F0 or F1 generation) for Aedes albopictus (8 strains) from northern Madagascar. Mosquitoes of the F2 generation (3 strains of Aedes aegypti and 10 strains of Ae. albopictus) were tested for oral susceptibility to dengue type 2 virus. Aedes aegypti was less susceptible to viral infection than Ae. albopictus. The genetic differentiation was less high between Ae. albopictus populations collected in agglomerations connected by highly frequented roads, indicating that human ground transportation favors mosquito dispersal. These results have implications for the ecology, pattern of migration, and relative importance in epidemic transmission of dengue viruses between the 2 Aedes species.

Imprenta: The American Journal of Tropical Medicine and Hygiene, v. 65, n. 5, p. 491-497, 2001

Identificador do objeto digital: 10.4269/ajtmh.2001.65.491

Descritores: Aedes aegypti - Pathogenesis ; Aedes aegypti - Viral infections ; Aedes aegypti - virus ; Aedes aegypti - Transmission ; Aedes aegypti - Dengue ; Aedes aegypti - Epidemic ; Aedes aegypti - Public health

Data de publicação: 2001