Table 1. Resistance ratio (RR50) of mosquito populations ( Anopheles gambiae sl.) to bendiocarb, malathion, and pirimiphos-methyl.
CI50: confidence interval at 50%; KdT50: knockdown time of 50% of the population; KdT50 of the wild strain divided by KdT50 of the Kisumu reference strain; RR50: resistance ratio at 50%.
| Insecticides by locality | Kdt 50 (CI 50) Kisimu (min) | Kdt 50 (CI 50) wild strain(min) | RR 50 |
|---|---|---|---|
| Adjagbo | |||
| Bendiocarb (0.01 %) | 10.955 (10.206 - 11.695) | 28.965 (26.766 - 31.049) | 2,644 |
| Malathion (5 %) | 11.715 (10.924 - 12.503) | 23.688 (20.125 - 26.922) | 2,022 |
| Pirimiphos-methyl (0.25 %) | 8.969 (8.009 - 9.863) | 21.940 (20.276 - 24.454) | 2,446 |
| Zinvié Dokomey | |||
| Bendiocarb (0.01 %) | 10.955 (10.206 - 11.695) | 31.977 (30.785- 33.134) | 2,919 |
| Malathion (5 %) | 11.715 (10.924 - 12.503) | 22.255 (19.810 - 24.577) | 1,899 |
| Pirimiphos-methyl (0.25 %) | 8.969 (8.009 - 9.863) | 25.933 (24.010 - 27.802) | 2,891 |
| Zè Tozounmè | |||
| Bendiocarb (0.01 %) | 10.955 (10.206 - 11.695) | 28.793 (27.095 - 30.444) | 2,628 |
| Malathion (5 %) | 11.715 (10.924 - 12.503) | 20.615 (18.378 - 22.725) | 1,760 |
| Pirimiphos-methyl (0.25 %) | 8.969 (8.009 - 9.863) | 22.251 (19.610 - 25.017) | 2,481 |
| Sèdjè-Dénou | |||
| Bendiocarb (0.01 %) | 10.955 (10.206 - 11.695) | 42.329 (39.822 - 45.205) | 3.864 |
| Malathion (5 %) | 11.715 (10.924 - 12.503) | 31.692 (20.260 - 48.610) | 2.705 |
| Pirimiphos-methyl (0.25 %) | 8.969 (8.009 - 9.863) | 34.863 (33.725 - 35.973) | 3.887 |