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1.
Mem. Inst. Oswaldo Cruz ; 102(5): 617-623, Aug. 2007. mapas, tab, graf
Artigo em Inglês | LILACS | ID: lil-458634

RESUMO

Aedes aegypti and Ae. albopictus are vectors of dengue viruses, which cause endemic disease in the city of Manaus, capital of the state of Amazonas, Brazil. More than 53 thousand cases have been registered in this city since the first epidemic in 1998. We evaluated the hypothesis that different ecological conditions result in different patterns of vector infestation in Manaus, by measuring the infestation level in four neighborhoods with different urbanization patterns, during the rainy (April), dry (August), and transitional (November) seasons. Ae. aegypti predominated throughout the study areas and sampling periods, representing 86 percent of all specimens collected in oviposition traps. High frequencies of houses positive for both species were observed in all studied sites, with Ae. aegypti present in more than 84 percent of the houses in all seasons. Ae. albopictus, on the other hand, showed more spatial and temporal variation in abundance. We found no association between infestation level and house traits. This study highlights the homogeneity of dengue vector distribution in Manaus.


Assuntos
Animais , Humanos , Aedes/classificação , Insetos Vetores/classificação , Brasil , Dengue/transmissão , Densidade Demográfica , Estações do Ano , População Urbana
2.
Mem. Inst. Oswaldo Cruz ; 91(6): 687-94, Nov.-Dec. 1996. tab, graf
Artigo em Inglês | LILACS | ID: lil-181129

RESUMO

An anopheline survey was carried out in two simian areas in the Brazilian Amazon, Balbina and Samuel, to determine the potencial vectors of Plasmodium brasilianum. The most abundant and/or acrodendrophilic anophelines in the forest and the most likely vector were Anopheles mediopunctatus, An. nuneztovari, An. oswaldoi, An. triannulatus and An. shannoni. An. darlingi and An. marajoara were captured essentially in anthropic habitats outside the forest and are unlikely to be involved in the transmission of P. brasilianum among monkeys within the forest and from monkeys to man in their surroundings in the Amazon.


Assuntos
Humanos , Animais , Anopheles , Vetores de Doenças , Malária/transmissão , Comportamento Espacial , Insetos Vetores
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