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Table 1 Percentage mortalities of Anopheles culicifacies and Anopheles subpictus populations to different insecticides (n > 100 for each value)

From: Multiple insecticide resistance mechanisms involving metabolic changes and insensitive target sites selected in anopheline vectors of malaria in Sri Lanka

  Anuradhapura Kurunegala Moneragala Puttalam Trincomalee
Ac As Ac As Ac As Ac As Ac As
4% DDT 34 20 4 14 62 30 24 47 22 19
5% Malathion 39 39 100 49 47 27 30 23 30 30
1% Fenitrothion 88 60 100 62 60 40 100 48 78 40
0.1% Propoxur 100 92 100 84 100 93 100 85 100 86
0.1% λ-cyhalothrin 100 65 100 58 100 100 100 85 100 100
0.25% Permethrin 50 30 85 65 65 67 87 67 23 25
0.025% Deltamethrin 100 88 100 86 7 84 100 92 97 88
0.1% Cypermethrin 100 100 100 100 100 100 100 100 100 100
0.15% Cyfluthrin 100 100 100 100 100 100 100 100 100 100
0.1% Etofenprox 95 27 89 67 85 62 85 74 90 100
  1. Ac = An. culicifacies
  2. As = An. subpictus.
  3. Mortality 98%–100% indicates susceptibility, 97%–80% suggests possibility of resistance that needs verification, < 80% indicate resistant [11].