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Table 4 Mortality rates of An. gambiae s.l. from Magu district 24 h post-exposure to pyrethroids and DDT, January–September, 2014

From: Farmers’ pesticide usage practices in the malaria endemic region of North-Western Tanzania: implications to the control of malaria vectors

  Long rains season Dry season Short rains season
Insecticide No of mosquitoes exposed No of mosquitoes survived % Mortality ± SD No of mosquitoes exposed No of mosquitoes survived % Mortality ± SD No of mosquitoes exposed No of mosquitoes survived % Mortality ± SD
Kisumu 100 0 100 ± 0 100 0 100 ± 0 60 100 100 ± 0
Permethrin 0.75% 60 9 85 ± 0.063 60 27 54.75 ± 19.29 60 2 97 ± 0.05
Deltamethrin 0.05% 60 7 88 ± 0.062 60 14 76.25 ± 15.756 60 2 97 ± 0.05
Lambdacyhalothrin 0.05% 60 0 100 ± 0 60 17 71.25 ± 14.773 60 0 100 ± 0
Etofenprox 0.5% 60 4 95 ± 0.035 60 0 100 ± 0 60 2 100 ± 0
Cyfluthrin 0.15% 60 23 61 ± 0.115 60 7 88 ± 11.51 60 4 97 ± 0.035
DDT 4% 60 3 96 ± 0.04 60 0 100 ± 0 60 9 84 ± 0.021
Total 360 46   360 65   360 19  
  1. SD is standard deviation: Kisumu is the susceptible laboratory strain used for reference