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Insecticide Resistance Development in Culex pipiens Population under Selection Pressures with Temephos

Journal: The Journal of Middle East and North Africa Sciences (Vol.3, No. 5)

Publication Date:

Authors : ; ; ; ;

Page : 16-19

Keywords : Culex pipiens; selection pressures; temephos resistance; organophosphate; esterase; acetylcholinesterase.;

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Abstract

A collection of Culex pipiens from Boussalem, Northwestern Tunisia, with a low level of temephos resistance (14.90 at LD95) was selected to higher resistance with temephos in the laboratory. After 6 generations of pressure, the temephos resistance ratio increased to 103.95 at LD95. Synergism tests showed that temephos resistance was not associated with monooxygenase and esterases or (GST); however, evidence of insensitive acetylcholinesterase was found. It is evident that this important vector species, Culex pipiens, has the potential to develop resistance to temephos.

Last modified: 2017-04-30 18:00:34