Table 1.
Acute toxicity of eight pesticides to honey bee workers at different duration, expressed as median lethal concentration (LC50: μg mL−1).
| Pesticides | 2 days interval | 4 days interval | 7 days interval | |||
|---|---|---|---|---|---|---|
| Slope (SE) | LC50 (95% CI) μg mL−1 | Slope (SE) | LC50 (95% CI) μg mL−1 | Slope (SE) | LC50 (95% CI) μg mL−1 | |
| THI | 2.92 (0.25) | 0.53 (0.47–0.62) | 2.91 (0.24) | 0.33 (0.28–0.38) | 3.60 (0.35) | 0.25 (0.20–0.29) |
| TET | 3.30 (0.29) | 312.7 (271.2–356.6) | 3.64 (0.34) | 258.7 (221.2–295.3) | 3.77 (0.36) | 216.8 (180.7–250.2) |
| ZCY | 3.25 (0.28) | 182.9 (157.5–209.1) | 3.60 (0.33) | 156.9 (133.4–179.6) | 3.77 (0.35) | 149.8 (126.6–171.6) |
| DIM | 3.35 (0.31) | 9.01 (7.79–10.77) | 3.73 (0.34) | 6.54 (5.78–7.49) | 3.48 (0.31) | 5.30 (4.65–6.03) |
| MET | 2.34 (0.23) | 12.50 (9.94–17.11) | 2.03 (0.18) | 6.59 (5.51–8.07) | 2.52 (0.21) | 4.19 (3.58–4.88) |
| CYF | 2.65 (0.23) | 321.6 (274.3–388.5) | 2.93 (0.25) | 245.6 (213.4–286.0) | 2.89 (0.25) | 182.2 (157.9–209.9) |
| PER | 2.39 (0.21) | 82.07 (68.81–101.7) | 2.77 (0.23) | 51.82 (44.86–60.31) | 3.68 (0.34) | 33.78 (29.12–38.39) |
| ESF | 2.28 (0.22) | 1343 (1086–1780) | 2.18 (0.21) | 1212 (988.4–1573) | 2.12 (0.20) | 1125 (922.4–1442) |
CI confidence interval, THI Thiamethoxam, TET Tetraconazole, ZCY Zeta-cypermethrin, DIM Dimethoate, MET Methomyl, CYF Cyfluthrin, PER Permethrin, ESF Esfenvalerate.