Table 3 Lethal and sublethal effects of chlorpyrifos on larval survival and development time of Unsel-Lab and CPF-Sel populations of S. Litura.
From: Fitness costs associated with laboratory induced resistance to chlorpyrifos in Spodoptera litura
Concentration | Larval survival (%) | Larval period (days) | Pupal period (days) | Development time from egg to adult emergence (DT) (days) | ||||
|---|---|---|---|---|---|---|---|---|
Unsel-Lab | CPF-Sel | Unsel-Lab | CPF-Sel | Unsel-Lab | CPF-Sel | Unsel-Lab | CPF-Sel | |
Control | 92.00 ± 2.00 | 90.00 ± 3.16 | 9.67 ± 0.04 | 10.46 ± 0.07 | 10.00 ± 0.04 | 10.38 ± 0.43 | 28.67 ± 0.07 | 29.84 ± 0.14 |
LC5 | 84.00 ± 2.45 | 88.00 ± 2.00 | 9.91 ± 0.06 | 10.15 ± 0.09 | 9.84 ± 0.06 | 10.08 ± 0.11 | 28.75 ± 0.05 | 29.23 ± 0.11 |
LC10 | 82.00 ± 3.74 | 84.00 ± 2.45 | 10.54 ± 0.13 | 10.97 ± 0.12 | 10.3 ± 0.15 | 10.81 ± 0.06 | 29.84 ± 0.22 | 30.79 ± 0.13 |
LC20 | 72.00 ± 2.00 | 76.00 ± 2.45 | 11.49 ± 0.12 | 12.46 ± 0.11 | 10.17 ± 0.23 | 10.68 ± 0.16 | 30.66 ± 0.32 | 32.14 ± 0.16 |
LC30 | 62.00 ± 2.00 | 56.00 ± 2.45 | 12.16 ± 0.07 | 15.49 ± 0.05 | 10.69 ± 0.15 | 11.50 ± 0.11 | 31.85 ± 0.11 | 37.00 ± 0.10 |
LC50 | 44.00 ± 2.45 | 48.00 ± 3.74 | 13.20 ± 0.09 | 16.31 ± 0.23 | 11.60 ± 0.19 | 12.22 ± 0.18 | 33.8 ± 0.28 | 38.53 ± 0.38 |
Two-way ANOVA summary | ||||||||
|---|---|---|---|---|---|---|---|---|
| Â | Larval survival (%) | Larval period (days) | Pupal period (days) | Development time from egg to adult emergence (DT) (days) | ||||
Between populations | F(1,48) = NS | F(1,48) = 550.22** | F(1,48) = 35.34** | F(1,48) = 411.43** | ||||
Between concentrations | F (5,48) = 98.52** | F (5,48) = 668.52** | F (5,48) = 45.46** | F (5,48) = 431.96** | ||||
Conc-Pop interaction | F (5,48) = NS | F (5,48) = 79.08** | F (5,48) = NS | F (5,48) = 53.42** | ||||
