%0 Journal Article
%9 ACL : Articles dans des revues avec comité de lecture non répertoriées par l'AERES
%A Chandre, Fabrice
%A Darriet, Frédéric
%A Darder, M.
%A Cuany, A.
%A Doannio, J.M.C.
%A Pasteur, N.
%A Guillet, Pierre
%T Pyrethroid resistance in Culex quinquefasciatus from West Africa
%D 1998
%L fdi:010015985
%G ENG
%J Medical and Veterinary Entomology
%@ 0269-283X
%K FILARIOSE ; VECTEUR ; INSECTICIDE CHIMIQUE ; RESISTANCE ; LARVE ; ADULTE ; MORTALITE
%K PERMETHRINE ; DELTAMETHRINE
%K COTE D'IVOIRE ; BURKINA FASO
%N 4
%P 359-366
%R 10.1046/j.1365-2915.1998.00120.x
%U https://www.documentation.ird.fr/hor/fdi:010015985
%> https://horizon.documentation.ird.fr/exl-doc/pleins_textes/pleins_textes_7/b_fdi_51-52/010015985.pdf
%V 12
%W Horizon (IRD)
%X Pyrethroid resistance was investigated in thirty-three samples of #Culex quinquefasciatus$ Say from twenty-five cities in Côte d'Ivoire and Burkina Faso. Permethrin resistance ratios at LC50 ranged from 9.5- to 82-fold in Côte d'Ivoire and from 17- to 49-fold in Burkina Faso. For deltamethrin, resistance ratios were lower and ranged from nine to thirty-eight in both countries. A strain was selected with permethrin to investigate resistance mechanisms. After forty-two generations of selection, permethrin resistance level reached 3750-fold, but deltamethrin resistance involved in permethrin resistance. Synergist assays and biochemical tests indicated that resistance was partly due to P450-dependent oxidases. A target site insensitivity (kdr) was also involved, associated with DDT cross resistance and a dramatic loss of permethrin knockdown effect on adults. This resistance should be taken into consideration when planning the use of pyrethroid-impregnated materials in urban area, as #Culex$ is by far the main source of nuisance. Any failure in nuisance control due to resistance is likely to demotivate people in using impregnated materials. (Résumé d'auteur)
%$ 052CULARB