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Further observations on the vertical distribution of flying mosquitoes (Diptera: Culicidae) in West African savanna

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, UK
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Abstract

The vertical distribution of flying mosquitoes was investigated in separate experiments in open savanna and over a fallow field system near Keneba Village in the tidal zone of the Gambia using suction traps located at seven levels (0·1, 0·25, 0·5, 1·0, 2·1, 3·9 and 7·9 m) on a scaffolding tower. Mosquito density declined progressively with height for Anopheles melas Theo., An. pharoensis Theo., An. squamosus Theo., An. ziemanni Grünb., Aedes dalzieli (Theo.), Ae. punctothoracis (Theo.), Culex tritaeniorhynchus Giles and Mansonia spp. Catches of C. thalassius Theo. and C. invidiosus Theo. increased with height to around 1 m and then decreased steadily although the 7·9–m trap consistently captured more C. thalassius than the trap below, presenting a bimodal vertical distribution profile. Flight altitudes of the two most abundant species, An. melas and C. thalassius, declined as the night progressed, but wind speed and lunar phase had no clear or consistent effects on flight levels. A functional relationship between flight altitudes and dispersal patterns of mosquitoes is suggested.

Type
Original Articles
Information
Bulletin of Entomological Research , Volume 72 , Issue 4 , December 1982 , pp. 695 - 708
Copyright
Copyright © Cambridge University Press 1982

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References

Bryan, J. H. (1979). Observations on the member species of the Anopheles gambiae complex in The Gambia, West Africa.—Trans. R. Soc. trop. Med. Hyg. 73, 463–466.CrossRefGoogle ScholarPubMed
Charlwood, J. D. & Jones, M. D. R. (1979). Mating behaviour in the mosquito, Anopheles gambiae s.l. I. Close range and contact behaviour.—Physiol. Entomol. 4, 111–120.CrossRefGoogle Scholar
Davidson, G. (1974). Genetic control of insect pests.—158 pp. London, Academic Press.Google Scholar
Gillies, M. T. & De Meillon, B. (1968). The Anophelinae of Africa south of the Sahara (Ethiopian Zoogeographical Region).—Publs S. Afr. Inst. med. Res. no. 54, 343 pp.Google Scholar
Gillies, M. T. & Wilkes, T. J. (1969). A comparison of the range of attraction of animal baits and of carbon dioxide for some West African mosquitoes.—Bull. ent. Res. 59, 441–456.CrossRefGoogle ScholarPubMed
Gillies, M. T. & Wilkes, T. J. (1972). The range of attraction of animal baits and carbon dioxide for mosquitoes. Studies in a freshwater area of West Africa.—Bull. ent. Res. 61, 389–404.CrossRefGoogle Scholar
Gillies, M. T. & Wilkes, T. J. (1976). The vertical distribution of some West African mosquitoes (Diptera, Culicidae) over open farmland in a freshwater area of the Gambia.—Bull. ent. Res. 66, 5–15.CrossRefGoogle Scholar
Haddow, A. J. & Ssenkubuge, Y. (1962). Laboratory observations on the oviposition-cycle in the mosquito Anopheles (Cellia) gambiae Giles.—Ann. trop. Med. Parasit. 56, 352–355.CrossRefGoogle ScholarPubMed
Haeger, J. S. (1960). Behavior preceding migration in the salt-marsh mosquito, Aedes taeniorhynchus (Wiedemann).—Mosquito News 20, 136–147.Google Scholar
Johnson, C. G. (1969). Migration and dispersal of insects by flight.—763 pp. London, Methuen.Google Scholar
Jones, M. D. R., Cubbin, C. M. & Marsh, D. (1972). Light-on effects and the question of bimodality in the circadian flight activity of the mosquito Anopheles gambiae.—J. exp. Biol. 57, 347–357.CrossRefGoogle Scholar
Jones, M. D. R. & Gubbins, S. J. (1978). Changes in the circadian flight activity of the mosquito Anopheles gambiae in relation to insemination, feeding and oviposition.—Physiol. Entomol. 3, 213–220.CrossRefGoogle Scholar
Kennedy, J. S. (1975). Insect dispersal.—pp. 103–119 in Pimentel, D. (Ed.). Insects, science, and society.—284 pp. New York, Academic Press.CrossRefGoogle Scholar
Lowry, W. P. (1972). Weather and life. An introduction to biometeorology.—305 pp. New York, Academic Press.Google Scholar
Provost, M. W. (1957). The dispersal of Aedes taeniorhynchus. II. The second experiment.—Mosquito News 17, 233–247.Google Scholar
Siegel, S. (1956). Nonparametric statistics for the behavioral sciences.— 312 pp. New York, McGraw Hill.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. (1977). The height and direction of flight of mosquitoes in West African savanna, in relation to wind speed and direction.—Bull. ent. Res. 67, 271–279.CrossRefGoogle Scholar
Snow, W. F. (1979). The vertical distribution of flying mosquitoes (Diptera: Culicidae) near an area of irrigated rice-fields in the Gambia.—Bull. Ent. Res. 69, 561–571.CrossRefGoogle Scholar
Snow, W. F. (1980). Field estimates of the flight speed of some West African mosquitoes.—Ann. trop. Med. Parasit. 74, 239–242.CrossRefGoogle ScholarPubMed
Snow, W. F. & Boreham, P. F. L. (1978). The host feeding patterns of some culicine mosquitoes (Diptera: Culicidae) in the Gambia.—Bull. ent. Res. 68, 695–706.CrossRefGoogle Scholar
Snow, W. F. & Wilkes, T. J. (1977). Age composition and vertical distribution of mosquito populations in the Gambia, West Africa.—J. med. Entomol. 13, 507–513.CrossRefGoogle ScholarPubMed
Taylor, L. R. (1974). Insect migration, flight periodicity and the boundary layer.— J. Anim. Ecol. 43, 225–238.CrossRefGoogle Scholar