Table 5.
Sensitivity of the adults of four field strains of B. tabaci strains to selected insecticides
| Insecticide | Strain | n a | LC 50 (95% FL) (mg/liter) | RR b | Slope (SE) | |
|---|---|---|---|---|---|---|
| Avermectin (macrocyclic lactone) | Adults | BJ | 530 | 0.118 (0.0985−0.142) b | 1.18 | 1.98 (0.205) |
| SD | 380 | 0.0932 (0.0571−0.152) ab | 0.932 | 0.940 (0.157) | ||
| HN | 703 | 0.0509 (0.0415−0.0623) a | 0.509 | 2.05 (0.171) | ||
| HB | 788 | 0.0842 (0.0651−0.109) b | 0.842 | 1.60 (0.143) | ||
| Acetamiprid (neonicotinoid) | Adults | BJ | 566 | 112 (70.0−183) b | 5.09 | 1.26 (0.212) |
| SD | 349 | 30.7 (20.4−45.9) a | 1.40 | 1.15 (0.217) | ||
| HN | 655 | 326 (162−667) bc | 14.8 | 0.644 (0.158) | ||
| HB | 985 | 417 (218−807) c | 19.0 | 0.862 (0.237) |
a n , number of eggs used in bioassay, including controls.
b RR, resistance ratio = (the LC 50 of field population)/(the LC 50 of Lab-Q) corresponding to the same developmental stage.