Variações geográficas no ciclo de picada do Anopheles darlingi Root no Brasil

Charlwood, J. D.; Hayes, Jack

doi:10.1590/1809-43921978084601

Cited by 22 publications

(7 citation statements)

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“…The biting cycles observed at Aseli Kamp and Apoma Tapoe resemble those observed in Colombia by Elliott (1972) and in Amazonas, Brazil, by Charlwood & Hayes (1978) in having a single main peak near midnight, but the big secondary peaks at dawn and dusk observed in Matto Grosso, Brazil, by Charlwood & Wilkes (1979) and the frequent day biting observed by Pajot et al (1977) in French Guyana, were not seen in Suriname. Since the maroons in the Suriname rain forest are usually inside their houses for the night by 21.00 h most biting has to be done indoors and anything that reduces entry and biting will reduce malaria transmission.…”

Section: Biting Cycle and Porous Ratementioning

confidence: 51%

Anopheles darlingiRoot (Diptera: Culicidae) in the Suriname rain forest

Hudson¹

1984

Bull. Entomol. Res.

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Females of Anopheles darlingi Root were the commonest (986%) of 5464 anophelines taken in 866 man-hours of human bait catches at night, in or near houses in the rain forest in Suriname during 1979-81, but their abundance could not be related to the prevalence of human malaria. In most endemic areas, few females were taken. At Aseli Kamp (4°17'N, 53 C 24'W) on the Lawa River, biting females were most abundant from April to June, during the long rainy season and rare or absent from September to March, during the long dry, short rainy and short dry seasons. At Apoma Tapoe, however, only 40 km downstream, they were most abundant in October and November, during the long dry season. Females entered houses to feed, with peak biting activity between 22.00 and 23.00 h, and were observed to rest near the collector for a mean of 77 min before and 171 min after feeding. No females were found resting by day, in buildings or out of doors. The mean parous rate of 827 females from biting catches was 43 6%. The expected biting rate of females was reduced by 203% in a house for six nights after it had been sprayed with DDT wettable powder (2 g/m 2 active ingredient), and by a mean of 826% during seven nights in a camp where the edge of the surrounding forest was sprayed with an ultra-low-volume mist of 95% fenitrothion (13 ml active ingredient per metre of perimeter) on the first, third and sixth days. A. darlingi larvae were found at Aseli Kamp in all seasons along the river's edge between water hyacinth plants (Eichhornia) and floating debris, and during the long rains in flooded forest.

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Section: Biting Cycle and Porous Ratementioning

confidence: 51%

Anopheles darlingiRoot (Diptera: Culicidae) in the Suriname rain forest

Hudson¹

1984

Bull. Entomol. Res.

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“…In this case, the owner and his wife helped in the collections. Since A. darlingi in this area does not demonstrate the crepuscular biting activity found in the Aripuana population (Charlwood & Hayes, 1978), collections, in 1979, were made from sunset (18.00 h) to 23.30 h, with no collections in the morning. Thus in both study areas, females for dissection were obtained from catches designed to sample most of the biting population even though no all-night catches were made.…”

Section: Methodsmentioning

confidence: 99%

Observations on The bionomics ofAnopheles darlingiRoot (Diptera: Culicidae) from Brazil

Charlwood

1980

Bull. Entomol. Res.

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The physiological age-structure of populations of the malaria vectorAnopheles darlingiRoot, collected biting man, was determined from collections made from March to June 1979 at the end of the rainy season in the village of Aripuanã, Mato Grosso, Brazil. The number of mosquitoes biting increased during the transition between the wet and dry seasons, but adult survival remained low at all times. Only seven of 1596 females dissected had laid eggs four or more times, and thus the proportion of females that could be potentially infective with malaria sporozoites was 0.4%. The mosquitoes rested in the vicinity of the host for periods of up to 10 min before biting. The results are compared to those obtained during a study onA. darlingion the Manaus-Boa Vista Highway, 1000 km to the north. In this area, peak numbers were collected at the beginning of the rainy season and adult survival was longer than at Aripuanã.

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“…Em seu território no Brasil é encontrado picando durante todo o ano, rareando um pouco no final da estação seca e abundando no final da chuvosa, mais propriamente na transição entre as épocas de maiores e menores pluviosi¬ dades (Charlwood & Hayes, 1978;Charlwood, 1980;Klein & Lima, 1990). Aparentemente, as chuvas torrenciais, frequentes durante a estação chuvosa, produzem elevada mortalidade dentre as larvas e pupas de An.…”

Section: Anopheles Darlingiunclassified