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The response of Anopheles gambiae s.l. and A. funestus (Diptera: Culicidae) to tents baited with human odour or carbon dioxide in Tanzania

  • L.E.G. Mboera (a1), B.G.J. Knols (a2), W. Takken (a2) and A. della Torre (a3)
Abstract

Field studies on the response of Anopheles gambiae s.l. Giles and Anopheles funestus Giles to tents baited with human odour or carbon dioxide were conducted in south-east Tanzania. Two exit traps and a CDC miniature light trap set beside a bed net were used to sample mosquitoes that entered the tent. Human odour, pumped from an underground pit into a bed net attracted a similar number of mosquitoes as a bed net occupied by a human male. Significantly fewer mosquitoes were caught in a tent into which carbon dioxide (300 ml min-1) was pumped than in a human-odour baited tent (9 and 27% for A. gambiae s.l. and A. funestus respectively). A five-fold increase of the carbon dioxide concentration (to 1500 ml min-1) did not increase the catches of A. gambiae s.l. whereas those of A. funestus were increased to 69% of the catches by human odour. Species identifications of A. gambiae s.l. catches showed that A. arabiensis Patton prevailed and that the proportions of A. arabiensis/A. gambiae s.s. did not differ between treatments. It is concluded that in the indoor situation described, human odour other than carbon dioxide is the principal cue to which these malaria vectors are attracted and that the physical presence of a host and carbon dioxide, when used as a kairomone on its own, accounts for only a minor part of the overall attractiveness of man, particularly for A. gambiae s.l.

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Charlwood, J.D., Smith, T., Kihonda, J., Heiz, B., Billingsley, P.F. & Takken, W. (1995) Density independent feeding success of malaria vectors (Diptera: Culicidae) in Tanzania. Bulletin of Entomological Research 85, 2935.
Clements, A.N. (1963) The physiology of mosquitoes. 393 pp. London, Pergamon Press.
Costantini, C., Gibson, G., Brady, J., Merzagora, L. & Coluzzi, M. (1993) A new odour-baited trap to collect host-seeking mosquitoes. Parassitologia 35, 59.
Costantini, C., Gibson, G., Sagnoni, N., Delia, Torre A., Brady, J. & Coluzzi, M. (1996) Mosquito responses to carbon dioxide in a West African Sudan savanna village. Medical and Veterinary Entomology 10, 220227.
De Jong, R. & Knols, B.G.J. (1995) Selection of biting sites on man by two malaria mosquito species. Experientia 51, 8084.
Gillett, J.D. (1979) Out for blood; flight orientation upwind in the absence of visual cues. Mosquito News 39, 221229.
Gillies, M.T. (1980) The role of carbon dioxide in host finding by mosquitoes (Diptera: Culicidae): A review. Bulletin of Entomological Research 70, 525532.
Gillies, M.T. (1988) Anopheline mosquitos: vector behaviour and bionomics. pp. 453483in Wernsdofer, W.H. & McGregor, I. (Eds) Malaria, principles and practice of malariology. Edinburgh, Churchill Livingstone.
Gillies, M.T. & Coetzee, M. (1987) A supplement to the Anophelinae of Africa south of the Sahara (Afrotropical Region). Publications of the South African Institute for Medical Research, No. 55, 1143.
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. Bulletin of Entomological Research 59, 441456.
Gillies, M.T. & Wilkes, T.J. (1970) The range of attraction of single baits for some West African mosquitoes. Bulletin of Entomological Research 60, 225235.
Gillies, M.T. & Wilkes, T.J. (1972) The range of attraction of animal baits and carbon dioxide for mosquitoes. Studies in a fresh water area of West Africa. Bulletin of Entomological Research 61, 389404.
Healy, T.P. & Copland, M.J.W. (1995) Activation of Anopheles gambiae mosquitoes by carbon dioxide and human breath. Medical and Veterinary Entomology 9, 331336.
Knols, B.G.J., De Jong, R. & Takken, W. (1994) Trapping system for testing olfactory responses of the malaria mosquito Anopheles gambiae in a wind tunnel. Medical and Veterinary Entomology 8, 386388.
Knols, B.G.J., De Jong, R. & Takken, W. (1995) Differential attractiveness of isolated humans to mosquitoes in Tanzania. Transactions of the Royal Society of Tropical Medicine and Hygiene 89, 604606.
Laarman, J.J. (1955) The host-seeking behaviour of the malaria mosquito, Anopheles maculipennis atroparvus. Acta Leidensia 25, 1144.
Lines, J.D., Curtis, C.F., Wilkes, T.J. & Njunwa, K.J. (1991) Monitoring human-biting mosquitoes (Diptera: Culicidae) in Tanzania with light-traps hung beside occupied mosquito nets. Bulletin of Entomological Research 81, 7784.
Muirhead-Thomson, R.C. (1948) Studies of Anopheles gambiae and An. melas in and around Lagos. Bulletin of Entomological Research 38, 527558.
Omer, S.M. (1979) Responses of female Anopheles arabiensis and Culex pipiens fatigans to air currents, carbon dioxide and human hands in a flight-tunnel. Entomologia Experimentalis et Applicata 26, 142151.
Scott, J.A., Brogdon, W.G. & Collins, C.F. (1993) Identification of single specimens of the Anopheles gambiae complex using the polymerase chain reaction. American Journal of Tropical Medicine and Hygiene 49, 520529.
Smith, T., Charlwood, J.D., Kihonda, J., Mwankusye, S., Billingsley, P., Meuwissen, J., Lyimo, E., Takken, W., Teuscher, T. & Tanner, M. (1993) Absence of seasonal variation in malaria parasitaemia in an area of intense seasonal transmission. Acta Tropica 54, 5572.
Snedecor, G.W. & Cochran, W.G. (1989) Statistical methods. 8th edn. pp. 268272. Iowa State University Press.
Snow, W.F. (1970) The effect of a reduction in expired carbon dioxide on the attractiveness of human subjects to mosquitoes. Bulletin of Entomological Research 60, 4348.
Sudia, W.D. & Chamberlain, R.W. (1962) Battery-operated light trap, an improved model. Mosquito News 22, 126129.
Takken, W. (1991) The role of olfaction in host-seeking of mosquitoes: a review. Insect Science and its Application 12, 287295.
Thompson, B.H. (1976) Studies on the attraction of Simulium damnosum s.l. (Diptera: Simuliidae) to its hosts. I. The relative importance of sight, exhaled breath, and smell. Tropenmedizin und Parasitologie 27, 455473.
Vale, G.A. (1974) The responses of tsetse flies (Diptera: Glossinidae) to mobile and stationary baits. Bulletin of Entomological Research 64, 545588.
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Bulletin of Entomological Research
  • ISSN: 0007-4853
  • EISSN: 1475-2670
  • URL: /core/journals/bulletin-of-entomological-research
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