Comparative developmental and susceptibility to insecticide of Bolivian and Brazilian populations of Triatoma infestans
Mem. Inst. Oswaldo Cruz
; 95(6): 883-8, Nov.-Dec. 2000. tab
Article
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| LILACS
| ID: lil-273446
Biblioteca responsable:
BR1.1
RESUMO
The triatomine bug Triatoma infestans probably originated in Bolivia and dispersed passively over wide areas of South America, where it is the principal vector of Trypanosoma cruzi. In the region of its probable origin this species shows colonization in two different ecotopes, so that it may be encountered in sylvatic as well as in artificial habitats. The sylvatic colonization pattern is not observed in the rest of its range, where T. infestans is exclusive to man-made habitats. The objective of this study was to compare several aspects of two T. infestans populations, one from Minas Gerais (Brazil) and the other from the Cochabamba Valley (Bolivia), with a view to elucidate the factors associated with the different colonization patterns observed for this species. The differences between the developmental cycle, weight, capacity to ingest blood and mortality rate of first instar nymphs should indicate more fragility of Brazilian population that may be related to its elimination possibility
Texto completo:
1
Índice:
LILACS
Asunto principal:
Piretrinas
/
Triatoma
/
Insectos Vectores
/
Insecticidas
Límite:
Animals
País/Región como asunto:
America do sul
/
Bolivia
/
Brasil
Idioma:
En
Revista:
Mem. Inst. Oswaldo Cruz
Asunto de la revista:
MEDICINA TROPICAL
/
PARASITOLOGIA
Año:
2000
Tipo del documento:
Article