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The height and direction of flight of mosquitoes in West African savanna, in relation to wind speed and direction

Published online by Cambridge University Press:  10 July 2009

W. F. Snow
W. F. Snow
Affiliation:
School of Biological Sciences, University of Sussex, Brighton BN1 9QG, U. K.
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Abstract

The height and direction of mosquito flight related to wind speed and direction, in the absence of a host, was investigated in open savanna in The Gambia, West Africa. Non-directional suction traps (at heigts of 0·68, 2·13 and 3·15 m); directional flight traps facing four directions ar three levels (0·00–1·37 m, 1·45–2·82 m and 2·90–4·27 m) and directional suction traps facing two directions at three heights (0–1·2 m, 2·4–3·7 m nd 4·9–6·1 m) were used. Catches form the non-directional suction traps and pooled data from all flight traps at each level showed an inverse relationship between wind speed and the height of flight of Anopheles melas (Theo.), of gravid females and of male mosquitoes. There was no indication of a similar relationship for the Culex decens Theo. group or for C. thalassius Theo. The results from flight traps and directional suction traps showed that all mosquitoes were apparently flying upwind at all the levels investigaed. It is concluded that, although upwind flight probably does not occur naturally in the open at eights of more than 1 or 2 m, these experiments indicate that upwind flight could occur at higher levels, in the lee of tree and other obstacles.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 67 , Issue 2 , June 1977 , pp. 271 - 279
Copyright
Copyright © Cambridge University Press 1977

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References

Bailey, S. F.Eliason, D. A. & Hoffman, B. L. (1965). Flight and dispersal of the mosquito Culex tarsalis Coquillett in the Sacramento Valley of California. —Hilgardia 37, 73–113.CrossRefGoogle Scholar
Bonnet, D. D. & Worcester, D. J.. (1946). The dispersal of Aedes albopictus in the territory of Hawaii. —Am. J. trop. Med. 26, 465–476.CrossRefGoogle ScholarPubMed
Geiger, R. (1965). The climate near the ground. 4th edn.— 611 pp. Cambridge, Mass.Harvard University Press.Google Scholar
Gillies, M. T. (1969). The ramp-trap, an unbaited device for flight studies of mosquitoes..— Mosquito News 29, 189–193.Google Scholar
Gillies, M. T. & Wilkes, T. J. (1972). The range of attraction of animal baits and carbondioxide for mosquitoes. Studies in a freshwater area of West Africa. —Bull. ent. Res. 61, 389–404.CrossRefGoogle Scholar
Gillies, M. T.. & Wilkes, T. J. (1974). Evidence for downwind flights by host-seeking mosquitoes.—Nature, Lond. 252 388–389.CrossRefGoogle Scholar
Haeger, J. S. (1960). Behavior preceding migration inthe salt-marsh mosquito, Aedes taeniorhynchus (Wiedemann).—Mosquito News 20, 136–147.Google Scholar
Hocking, B. (1963). The use of attractants and repellents in vector control.—Bull. Wld Hlth Org. 29 suppl., 121–126.Google ScholarPubMed
Kennedy, J. S. (1940). The visual responses of flying mosquitoes.—Proc. zool. Soc. Lond. (A) 109, 221–242.CrossRefGoogle Scholar
KENNEDY, J. S. (1951). The migration of the desert locust (Schistocerca gregaria Forsk.) I. The behaviour of swarms. II. A theory of long-range migrations.—Phil. Trans. R. Soc. (B) 235, 163–290.Google Scholar
Klassen, W. & Hocking, B. (1964). The influence of a deep river valley system on the dispersal of Aedes mosquitoes.—Bull. ent. Res. 55 289–304.CrossRefGoogle Scholar
Lewis, T. & Siddorn, J. W. (1959). A Simple portable recorder for direction and speed of wind.—J. anim. Ecol. 28 377–380.CrossRefGoogle Scholar
Lewis, T. & Taylor, L. R. (1967). Introduction to experimental ecology..— xi+401 pp. London, Academic PressGoogle Scholar
Nielsen, E. T. (1958). The initial stage of migration in salt-marsh mosquitoes.—Bull. ent. Res. 49 305–313.CrossRefGoogle Scholar
Provost, M. W. (1952). The dispersal of Aedes taeniorhynchus. I. Preliminary studies.—Mosquito News 12, 174–190.Google Scholar
Provost, M. W. (1960). The dispersal of Aedes taeniorhynchus. III. Study method for migratory exodus.—Mosquito News 20, 148–161.Google Scholar
Snow, W. F. (1975). The vertical distribution of flying mosquitoes (Diptera, Culicidae) in West African savanna.—Bull. ent. Res. 65 269–277.CrossRefGoogle Scholar
Snow, W. F. (1976). The direction of flight of mosquitoes (Diptera, Culicidae) near the ground in West African savanna in relation to wind direction, in the presence and absence of bait.—Bull. ent. Res. 65,555–562.CrossRefGoogle Scholar
Snow, W. F. & Boreham, P. F. L. (1973). The feeding habits of some West African Culex (Dipt., Culicidae) mosquitoes.—Bull. ent. Res. 62, 517–526.CrossRefGoogle Scholar
Taylor, L. R. (1958). Aphid dispersal and diurnal periodicity.–Proc. Linn. Soc. Lond. 169, 16–73.Google Scholar
Taylor, L. R.. (1974). Insect migration, flight periodicity and the boundary layer. — J. anim. Ecol. 43, 225–238.CrossRefGoogle Scholar