Paper Report for: Ben_1993_J.Am.Mosq.Control.Assoc_9_335
Reference
Title: Resistance to temephos, an organophosphorous insecticide, in Culex pipiens from Tunisia, North Africa Ben Cheikh H, Pasteur N Ref: J Am Mosq Control Assoc, 9:335, 1993 : PubMed
Resistance to temephos, an organophosphorous insecticide (OP), was found to be low (2-fold) in 2 Culex pipiens populations collected in Sayada (mid-eastern Tunisia). This resistance was synergized by an esterase inhibitor (DEF). Two sets of over-produced esterases (A2-B2 and A4-B4), known to be involved in resistance, were identified in almost 50% of the examined insects. In addition, 3% of insects had an insensitive acetylcholinesterase. After selecting larvae of one of the samples (ES) with temephos for 6 generations, a 9-fold increase in resistance was observed, and all mosquitoes were found to carry esterases A2-B2 and an insensitive acetylcholinesterase. These results must be considered in future mosquito control programs, since 2 of the identified genes can lead to high resistance to several organophosphorous insecticides.
        
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Ben Cheikh H, Pasteur N (1993) Resistance to temephos, an organophosphorous insecticide, in Culex pipiens from Tunisia, North Africa J Am Mosq Control Assoc9: 335-7
Ben Cheikh H, Pasteur N (1993) J Am Mosq Control Assoc9: 335-7