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Table 4 Phenotypes and genotypes at codon 1014 of the vgsc of Anopheles.gambiae collected in Ipono (December 2007).

From: Trends in DDT and pyrethroid resistance in Anopheles gambiaes.s. populations from urban and agro-industrial settings in southern Cameroon

Molecular form Phenotype Insecticide N Genotypes f(Ser) f(Phe)
     Leu-Leu Leu-Phe Leu-Ser Ser-Ser Phe-Phe Phe-Ser   
M-form Control - 19 15 4 0 0 0 0 0 0.10
  Dead 4%DDT 8 6 2 0 0 0 0 0 0.12
   0.05%Deltamethrin 6 6 0 0 0 0 0 0 0
   0.75%Permethrin 13 8 2 0 0 3 0 0 0.31
  Survivor 4%DDT 0 - - - - - - - -
   0.05%Deltamethrin 0 - - - - - - - -
   0.75%Permethrin 0 - - - - - - - -
S-form Control - 45 4 7 2 3 20 9 0.18 0.62
  Dead 4%DDT 11 2 4 3 0 1 1 0.18 0.41
   0.05%Deltamethrin 29 2 3 3 2 18 1 0.14 0.69
   0.75%Permethrin 15 2 4 1 1 4 3 0.20 0.50
  Survivor 4%DDT 29 0 1 0 0 27 1 0.01 0.96
   0.05%Deltamethrin 6 0 0 0 0 3 3 0.25 0.75
   0.75%Permethrin 33 0 0 0 0 24 9 0.14 0.86'
  1. N: sample size; f(): frequency of the resistant alleles (L1014S = Ser and L1014F = Phe) in the mosquito pools; vgsc: voltage gated sodium channel