Skip to main content

Advertisement

Table 2 Mortality rates of the Anopheles gambiae s.l field populations from various localities exposed to deltamethrin, permethrin, DDT and bendiocarb

From: High level of resistance in the mosquito Anopheles gambiae to pyrethroid insecticides and reduced susceptibility to bendiocarb in north-western Tanzania

Insecticide Date Village Total tested No. of replicates  % mortality (95%CI) % blood-fed Anopheles
Bendiocarb (0.1%) May 2011 Kyamyorwa 112 6 100% (97–100) 100%
Nov 2011 Kyamyorwa 106 7 84%1 (76–90) 78%
   Kangoma 54 3 70%3 (56–82) 86%
   Kikagate 100 5 86% (78–92) 65%
   Kiteme 84 5 90%2 (82–96) 96%
   Kisumu strain 61 4 97% (89–100)  
DDT (4%) May 2011 Kyamyorwa 98 5 37% (27–47) 100%
  Nov 2011 Kyamyorwa 99 5 13%1 (7–21) 88%
   Rwigembe 8 1 13% (0–53) 36%
   Buhuma 12 1 17% (2–48) 58%
   Kikagate 20 1 35% (15–59) 55%
   Kiteme 85 4 40%2 (30–51) 100%
   Kisumu strain 100 4 100% (96–100)  
Deltamethrin (0.05%) May 2011 Kishuro 20 1 70% (46–88) 100%
  Kyamyorwa 106 5 28%3 (20–38) 100%
Permethrin (0.75%) Nov 2011 Kiteme 98 5 11% (6–19) 98%
  1. Proportion of blood-fed Anopheles at the time of the testing is reported.
  2. 1Control mortality was 2%, 23% and 34% in the test indicated with a subscript and was 0% in all the other test.