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The dispersal and survival of Anopheles Culicifacies Giles (Diptera: Culicidae) in a Sri Lankan village under malathion spraying

Published online by Cambridge University Press:  10 July 2009

P. Rawlings  and
G. Davidson
P. Rawlings
Affiliation:
London School of Hygiene and Tropical Medicine, Keppel Street, London WCIE 7HT, UK
G. Davidson
Affiliation:
London School of Hygiene and Tropical Medicine, Keppel Street, London WCIE 7HT, UK
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Abstract

Two mark-release-recapture experiments with Anopheles culicifacies Giles were carried out immediately before and one month after a round of malathion spraying of houses (at 2 g/m2) in a village in north-western Sri Lanka. In the first experiment the measurement of bidirectional movement of females collected in two halves of the village showed that movement was somewhat affected by wind direction; the percentage of migrants moving partially upwind was greater (11·4) than that in the reverse direction (6·4). The best estimates of daily survival were 0·79 before spraying and 0·44 after spraying; population sizes were about 44 500 and 1300, respectively. The proportion of females resting in the collection huts rose after spraying. The results are discussed with reference to the evolution of insecticide resistance in populations under insecticidal pressure and those populations not selected by spraying.

Type
Research Paper
Information
Bulletin of Entomological Research , Volume 72 , Issue 1 , March 1982 , pp. 139 - 144
Copyright
Copyright © Cambridge University Press 1982

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References

Bertram, D. S. & McGregor, I. A. (1956). Catches in the Gambia, West Africa, of Anopheles gambiae Giles and A. gambiae var. melas Theobald in entrance traps of a baited portable wooden hut, with special reference to the effect of wind direction.—Bull. ent. Res. 47, 669–681.CrossRefGoogle Scholar
Curtis, C. F. & Rawlings, P. (1980). A preliminary study of dispersal and survival of Anopheles culicifacies in relation to the possibility of inhibiting the spread of insecticide resistance.—Ecol. Entomol. 5, 11–17.CrossRefGoogle Scholar
Gillett, J. D. (1979). Out for blood; flight orientation up-wind in the absence of visual clues.—Mosquito News 39, 221–229.Google Scholar
Rawlings, P., Curtis, C. F., Wickramasinghe, M. B. & Lines, J. (1981). The influence of age and season on dispersal and recapture of Anopheles culicifacies in Sri Lanka.—Ecol. Entomol. 6, 307–319.CrossRefGoogle Scholar