[Resistance of Culex quinquefasciatus (Say, 1823) to deltamethrin and the use of impregnated mosquito nets in an urban area of Bouaké, Côte d'Ivoire].
The efficacy of pieces of nets treated with two formulations of deltamethrin (concentrated suspension at 1% and tablets at 25%) against two strains of Culex quinquefasciatus ("S-Lab", sensitive strain and "Bouaké", local strain) has been evaluated at the laboratory by experimental tunnels tests. The observed mortality of the sensitive strain has been 2-3 time more important than that of local strain. This observation seems to be linked to Culex quinquefasciatus of Bouaké pyrethrinoids-resistance. The excito-repellency effect of the two formulations has been lower for the local strain than for the sensitive strain. It has also been more important with the tablet at 25% than with concentrated suspension at 1%. The blood feeding rate has been more important for the local strain than for sensitive strain and it has been lower with the tablet at 25% than with the concentrated suspension at 1%.
Konan
Y L
YL
Institut Pierre Richet (OCCGE), 01 BP 1500, Bouaké 01, Côte d'Ivoire.
Koffi
A A
AA
Doannio
J M
JM
Darriet
F
F
D000818:Animals; D007560:Cote d'Ivoire; D003465:Culex; D007305:Insecticide Resistance; D007306:Insecticides / Q000008:administration & dosage; D009032:Mosquito Control; D009570:Nitriles; D011722:Pyrethrins / Q000008:administration & dosage*
D007306:Insecticides; D009570:Nitriles; D011722:Pyrethrins; C017180:decamethrin