Table 2.
Susceptibility of 13 insecticides against Anopheles sinensis s.s. using direct contact diffusion assay with 24-hour exposure
| Insecticide | na | Slope (±SE) | LC50 (ppm) | 95% CL | χ2 | RSb |
|---|---|---|---|---|---|---|
| Bifenthrin | 450 | 1.0 ± 0.09 | 0.227 | 0.166–0.312 | 5.35 | 1.0 |
| Cyfluthrin | 375 | 1.0 ± 0.12 | 0.446 | 0.315–0.692 | 4.69 | 2.0 |
| Etofenprox | 450 | 1.0 ± 0.90 | 1.858 | 1.360–2.331 | 6.53 | 8.2 |
| Fenthion | 300 | 1.3 ± 0.16 | 2.377 | 1.732–3.120 | 2.65 | 10.5 |
| Cypermethrin | 375 | 1.0 ± 1.12 | 2.419 | 1.748–3.217 | 1.83 | 10.7 |
| λ-Cyhalothrin | 300 | 1.2 ± 0.15 | 3.220 | 2.410–3.543 | 0.54 | 14.2 |
| α-Cypermethrin | 300 | 1.4 ± 0.16 | 3.323 | 2.561–3.689 | 2.70 | 14.6 |
| Deltamethrin | 375 | 1.4 ± 0.14 | 4.522 | 3.444–5.216 | 6.03 | 19.9 |
| Dichlorvos | 450 | 1.1 ± 0.13 | 4.850 | 3.907–5.224 | 3.57 | 21.4 |
| Chlorpyrifos | 375 | 1.2 ± 0.13 | 4.890 | 3.951–5.336 | 3.39 | 21.5 |
| Profenofos | 375 | 1.6 ± 0.14 | 5.829 | 4.916–7.361 | 3.89 | 25.7 |
| Fenitrothion | 450 | 1.3 ± 0.13 | 7.860 | 6.115–9.124 | 2.99 | 34.6 |
| Permethrin | 375 | 1.5 ± 0.16 | 12.485 | 9.799–13.599 | 0.45 | 55.0 |
a
Number of mosquitoes;
b
LC50 of each insecticide/LC50 of bifenthrin. CL = confident limit; LC50 = median lethal dose; RS = relative susceptibility.