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Table 3 Variations in molecular forms and kdr-alleles frequencies in tested Anopheles gambiae populations.

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

An. gambiae Site Year N(%) f(L1014S) f(L1014F)
M-form Ipono 2003 16 (33) ND 0
   2005 22 (61) 0 0
   2007 19 (30) 0 0.10
  Nkolondom 2003 26 (60) ND 0
   2005 0 (0) - -
   2007 2 (4) 0 0.50*
  Mangoum 2003 0 (0) - -
   2005 0 (0) - -
   2007 0 (0) - -
  Bonanloka 2001 30 (100) ND 0
   2005 33 (63) 0 0
   2007 33 (58) 0 0.18
S-form Ipono 2003 32 (67) ND 0.04
   2005 14 (39) 0.03 0.25
   2007 45 (70) 0.18 0.62
  Nkolondom 2003 17 (39) ND 0
   2005 64 (100) 0.03 0.59
   2007 45 (96) 0.02 0.92
  Mangoum 2003 51 (100) ND 0.37
   2005 76 (100) 0.14 0.85
   2007 33 (100) 0.24 0.72
  Bonanloka 2001 0 (0) - ND
   2005 19 (37) 0 0.20
   2007 24 (42) 0 0.16
  1. N: sample size; f(): frequency of the kdr alleles; *: 1 specimen out of the 2 tested carried the mutation; ND: not determined.