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Table 3 Knockdown resistance ratio of An. gambiae s.l. mosquitoes (Tiassalé strain) at different rearing temperature regimes

From: Relationship between temperature and Anopheles gambiae sensu lato mosquitoes' susceptibility to pyrethroids and expression of metabolic enzymes

Insecticide Temperature regime (°C) Test population (Tiassalé)
KDT50 [95% CI]
Reference strain (Kisumu)
KDT50 [95% CI]
KRR Resistance status
Deltamethrin 25 40.18 [38.22, 42.23] 16.02 [15.12, 16.94] 2.51 Low resistance
28 32.33 [30.76, 33.88] 16.35 [15.45, 17.27] 1.98 Low resistance
30 28.02 [24.84, 31.36] 15.68 [14.63, 16.71] 1.79 Low resistance
32 22.85 [21.37, 24.36] 15.44 [14.33, 16.52] 1.48 Low resistance
Permethrin 25 888.70 [224.30, 7,113,093.45] 17.32 [15.83, 17.92] 51.31 High resistance
28 63.26 [56.06, 74.90] 16.34 [15.47, 17.23] 3.87 Low resistance
30 60.57 [55.03, 69.18] 16.88 [17.71, 20.26] 3.59 Low resistance
32 59.29 [52.81, 69.25] 14.39 [13.47, 15.29] 4.12 Low resistance
  1. KDT  knockdown time, KRR  knockdown resistance ratio, CI  confidence interval, KDT50 and 95% CI were obtained using Probit analysis; KRR50 < 1 = susceptible, 1–10 = low resistance, 11–30 = moderate resistance, 31–100 = high resistance, and KRR50 > 100 = very high resistance