Table 3.
Comparison of glass-vial and diet cup bioassays for Lygus lineolaris exposed to the insecticide permethrin at different concentrations
| Parameters-insecticides | Insects | Hours AEX-Bioassay (means + SE) | |||||||
|---|---|---|---|---|---|---|---|---|---|
| 6-h | 24-h | 48-h | 72-h | ||||||
| Diet | Vial | Diet | Vial | Diet | Vial | Diet | Vial | ||
| LC50a | 3,960 | 100.27 ± 18.03b | 4.69 ± 0.51a | 5.91 ± 0.51a | 5.33 ± 1.41a | 3.74 ± 0.47a | 5.46 ± 1.35a | 2.88 ± 0.31a | 4.19 ± 1.03a |
| RR50 | 3,960 | 2.40 ± 0.17a | 25.32 ± 16.45a | 1.62 ± 0.17a | 34.04 ± 25.13a | 1.95 ± 0.29a | 57.61 ± 41.95a | 1.81 ± 0.28a | 194.62 ±162.83a |
| Dose-response (%) | 3,960 | 100a | 100a | 100a | 100a | 100a | 100a | 100a | 100a |
| Significant regression (%) | 3,960 | 72.72 ± 4.49a | 54.55 ± 1.57a | 72.72 ±1.41a | 27.27 ±1.41b | 100a | 36.36 ±1.52b | 81.81 ± 1.22a | 54.55 ±1.57a |
| Mortality (M) control (%) | 3,960 | 0b | 7.27 ± 0.38a | 0.30 ± 0.30b | 9.09 ± 3.68a | 2.42 ± 0.91b | 13.03 ± 4.08a | 4.24 ±1.10b | 27.66 ± 9.16a |
| M highest concentration (%) | 3,960 | 98.18 ± 0.93a | 92.72 ± 4.18a | 99.69 ± 0.30a | 95.15 ± 3.37a | 99.69 ±0.30a | 99.09 ± 0.90a | 99.69 ± 1.05a | 99.09 ± 0.90a |
Means ± SE followed by the same letter in each row by hours are not significantly different (P < 005 Tukey’s test).
aLethal concentration and resistance ratio values are in μg per vial or diet cup.