Role of non-specific esterase of culex pipiens pallens in its resistance development against different insecticides

  Objective   To explore the role of non-specific esterase(NSE)of culex pipiens pallens in its resistance development to different insecticides.

  Methods   WHObioassay and micro-plank mensaration.

  Results   NES activities of three resistant Cx.pipien pallens strains with insecticide resistance development is the different as the increasing of generation number.NSE level became high in anti-DDVP strain with resistance developing, and also in anti-propox urstrain, while the level of NSE anti-cypermethrin was similar to that of susceptible strain.

  Conclusion   NSE was proved to play an improtant role in the mosquito resistance against or ganophosphorus insecticides and its development was one of important mechanism for the development of resistance towards car bamates, while ithad little relationship with the resistance against pyrethroids.