Génétique héréditaire : recherche actuelle

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Pirimiphos-Methyl Resistance Status of Field Populations of Culex pipiens (Diptera: Culicidae) From Grand Tunis Area, Northeast Tunisia

Ahmed Tabbabi, Jaber Daaboub, Ali Laamari, Raja Ben Cheikh1 and Hassen Ben Cheikh

Mosquito species are responsible for the transmission of many parasitic diseases and their control leads to the phenomenon of resistance to insecticides. Five Culex pipiens samples were collected from various localities of Grand Tunis area, Northeast Tunisia, between June 2003 and November 2005. All the studied samples were resistant to pirimiphos methyl (organophosphorus insecticide). Our results showed the implication of insensitive acetylcholinesterase and overproduced esterases in the résistance of the Tunisian populations of Culex pipiens. Results were discussed in relation to resistance mechanism.