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Table 2 Acetylcholinesterase genotypes as determined by PCR on Anopheles gambiae collected from the experimental huts.

From: Experimental hut evaluation of bednets treated with an organophosphate (chlorpyrifos-methyl) or a pyrethroid (lambdacyhalothrin) alone and in combination against insecticide-resistant Anopheles gambiae and Culex quinquefasciatus mosquitoes

Type of Treatment Live/dead at collection Ace 1R/Ace1R No. Ace 1R/Ace 1S Ace 1S/Ace 1S
    No. % survival No. % survival
Untreated Control live 0 27 64%a 9 100%b
  dead 0 15   0  
  total 0 42   9  
Chlorpyrifos- methyl live 1 23 26%c 11 46%c
  dead 1 65   13  
  total 2 88   24  
Lambda- cyhalothrin live 0 16 34%c 2 14%c
  dead 0 31   12  
  total 0 47   14  
Mixture & two-in-one live 0 21 47%c 1 17%c
  dead 0 45   5  
  total 0 66   6  
  1. Note percentages accompanied by different letter superscripts differ significantly by χ2 or Fisher's exact test