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Efficacy of mosquito nets treated with insecticide mixtures or mosaics against insecticide resistant Anopheles gambiae and Culex quinquefasciatus (Diptera: Culicidae) in Côte d'Ivoire

  • J.-M. Hougard (a1), V. Corbel (a1), R. N'Guessan (a2), F. Darriet (a1), F. Chandre (a1), M. Akogbéto (a3), T. Baldet (a4), P. Guillet (a5), P. Carnevale (a1) and M. Traoré-Lamizana (a2)...

Only pyrethroid insecticides have so far been recommended for the treatment of mosquito nets for malaria control. Increasing resistance of malaria vectors to pyrethroids threatens to reduce the potency of this important method of vector control. Among the strategies proposed for resistance management is to use a pyrethroid and a non-pyrethroid insecticide in combination on the same mosquito net, either separately or as a mixture. Mixtures are particularly promising if there is potentiation between the two insecticides as this would make it possible to lower the dosage of each, as has been demonstrated under laboratory conditions for a mixture of bifenthrin (pyrethroid) and carbosulfan (carbamate). The effect of these types of treatment were compared in experimental huts on wild populations of Anopheles gambiae Giles and the nuisance mosquito Culex quinquefasciatus Say, both of which are multi-resistant. Four treatments were evaluated in experimental huts over six months: the recommended dosage of 50 mg m−2 bifenthrin, 300 mg m−2 carbosulfan, a mosaic of 300 mg m−2 carbosulfan on the ceiling and 50 mg m−2 bifenthrin on the sides, and a mixture of 6.25 mg m−2 carbosulfan and 25 mg m−2 bifenthrin. The mixture and mosaic treatments did not differ significantly in effectiveness from carbosulfan and bifenthrin alone against anophelines in terms of deterrency, induced exophily, blood feeding inhibition and overall mortality, but were more effective than in earlier tests with deltamethrin. These results are considered encouraging, as the combination of different classes of insecticides might be a potential tool for resistance management. The mixture might have an advantage in terms of lower cost and toxicity.

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W.S. Abbott (1925) A method of computing the effectiveness of an insecticide. Journal of Economic Entomology 18, 265267.

C. Campanhola & F.W. Plapp (1989) Toxicity and synergism of insecticides against susceptible and pyrethroid-resistant third instars of the tobacco budworn (Lepidoptera: Noctuidae). Journal of Economic Entomology 82, 15271533.

F. Chandre , F. Darriet , J.M.C. Doannio , F. Rivière , N. Pasteur & P. Guillet (1997) Distribution of organophosphate and carbamate resistance in Culex pipiens quinquefasciatus (Diptera: Culicidae) from West Africa. Journal of Medical Entomology 34, 664671.

F. Chandre , F. Darriet , M. Darder , A. Cuany , J.M.C. Doannio , N. Pasteur & P. Guillet (1998) Pyrethroid resistance in Culex quinquefasciatus from West Africa. Medical and Veterinary Entomology 12, 359366.

V. Corbel , F. Darriet , F. Chandre & J.M. Hougard (2002) Insecticide mixtures for mosquito net impregnation against malaria vectors. Parasite 9, 255259.

C.F. Curtis , N. Hill , S.H. Kasim (1993) Are there effective resistance management strategies for vectors of human disease? Biological Journal of the Linnean Society 48, 318.

C.F. Curtis , J. Myamba , T.J. Wilkes (1996) Comparison of different insecticides and fabrics for anti-mosquito bednets and curtains. Medical and Veterinary Entomology 10, 111.

I. Denholm & M.W. Rowland (1992) Tactics for managing resistance in arthopods: theory and practice. Annual Review of Entomology 37, 91112.

P. Guillet , R. N'Guessan , F. Darriet M. Traoré-Lamizana , F. Chandre , P. Carnevale (2001) Combined pyrethroid and carbamate ‘two in one’ treated mosquito nets: field efficacy against pyrethroid-resistant Anopheles gambiae and Culex quinquefasciatus. Medical and Veterinary Entomology 15, 105112.

K. Hargreaves , L.L. Koerkemoer , B. Brooke , R.H. Hunt , J. Mthembu , M. Coetzee (2000) Anopheles funestus resistant to pyrethroid insecticides in South Africa. Medical and Veterinary Entomology 14, 181189.

J.-M. Hougard , S. Duchon , M. Zaim , P. Guillet (2002) Bifenthrin, a useful pyrethroid insecticide for treatment of mosquito nets. Journal of Medical Entomology 39, 526533.

J.H. Kolaczinski , C. Fanello J.-P. Hervé D.J. Conway , P. Carnevale , C.F. Curtis (2000) Experimental and molecular genetic analysis of the impact of pyrethroid and non-pyrethroid insecticide impregnated bednets for mosquito control in area of pyrethroid resistance. Bulletin of Entomological Research 90, 125132.

S.F. Koziol , J.F. Witkowski (1982) Synergism studies with binary mixtures of permethrin plus methyl parathion, chlorpyrifos, and malathion on European corn borer larvae. Journal of Economic Entomology 75, 2830.

J. Lines (1996) Mosquito nets and insecticides for net treatment: a discussion of existing and potential distribution systems in Africa. Tropical Medicine and International Health 1, 616632.

D.F. Martinez-Torres , F. Chandre , M.S. Williamson , F. Darriet J.B. Bergé A.L. Devonshire , P. Guillet , N. Pasteur , D. Pauron (1998) Molecular characterization of pyrethroid knockdown resistance (kdr) in the major malaria vector Anopheles gambiae s.s. Insect Molecular Biology 7, 179184.

J.E. Miller , S.W. Lindsay , J.R.M. Armstrong (1991) Experimental hut trials of bednets impregnated with synthetic pyrethroid or organophosphate insecticide for mosquito control in The Gambia. Medical and Veterinary Entomology 5, 465467.

R. N'Guessan , F. Darriet , J.M.C. Doannio , F. Chandre , P. Carnevale (2001) Olyset Net ® efficacy against pyrethroid-resistant Anopheles gambiae and Culex quinquefasciatus after 3 years’ field use in Côte d'Ivoire. Medical and Veterinary Entomology 15, 97104.

R. N'Guessan , F. Darriet , P. Guillet , P. Carnevale , M.T. Lamizana , V. Corbel , A.A. Koffi , F. Chandre (2003) Resistance to carbosulfan in field populations of Anopheles gambiae from Côte d'Ivoire based on reduced susceptibility of acetylcholinesterase. Medical and Veterinary Entomology 17, 1925.

K.J. Njunwa , J.D. Lines , S.M. Magesa , A.E.P. Mnzava , T.J. Wilkes , M. Alilio , K. Kivumbi , C.F. Curtis (1991) Trial of pyrethroid impregnated bednets in an area of Tanzania holoendemic for malaria. Part 1. Operational methods and acceptability. Acta Tropica 49, 8796.

H. Ranson , B. Jensen , J.M. Vulule , X. Wang , J. Hemingway , F.H. Collins (2000) Identification of a point mutation in the voltage-gated sodium channel gene of Kenyan Anopheles gambiae associated with resistance to DDT and pyrethroids. Insect Molecular Biology 9, 491497.

E.A. Temu , J.N. Minjas , C.J. Shiff , A. Majala (1999) Bedbug control by permethrin-impregnated bednets in Tanzania. Medical and Veterinary Entomology 13, 457459.

M. Zaim , A. Aitio , N. Nakashima (2000) Safety of pyrethroid-treated nets. Medical and Veterinary Entomology 14, 15.

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Bulletin of Entomological Research
  • ISSN: 0007-4853
  • EISSN: 1475-2670
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