Table 1.
Insecticidal activity of temephos with and without enzyme inhibitors on larvae of Aedes aegypti Vauclin and Bora-Bora strains
| Strain | Enzyme inhibitor |
Slope (± SE) |
LC50 (μg/L) (95% CI) |
LC95 (μg/L) (95% CI) |
RR50 (95% CI) |
RR95 (95% CI) |
SR50 (95% CI) |
SR95 (95% CI) |
| - | 8.49 (0.45) |
3.7 (3.6-3.8) |
5.7 (5.5-6) |
- | - | - | - | |
| Bora-Bora | PBO | 8.28 (0.67) |
4.2 (4-4.4) |
6.7 (6.4-7) |
- | - | 0.87 (0.74-1.03) |
0.87 (0.74-1.03) |
| DEF | 8.13 (0.44) |
3.3 (3.2-3.4) |
5.3 (5.1-5.6) |
- | - | 1.10 (0.98-1.24) |
1.10 (0.98-1.24) |
|
| DMC | 11.16 (0.54) |
4.3 (4.2-4.4) |
6.0 (5.8-6.2) |
- | - |
0.86 (0.79-0.94) |
0.96 (0.81-1.14) |
|
| - | 2.08 | 160 | 1000 | 44 | 175 | - | - | |
| (0.08) | (150-180) | (870-1180) | (40-48) | (150-205) | ||||
| PBO | 3.60 | 140 | 400 | 33 | 60 | 1.16 | 2.52 | |
| Vauclin | (0.24) | (130-150) | (360-450) | (29-38) | (51-71) | (1.05-1.29) | (2.16-2.95) | |
| DEF | 3.00 | 68 | 240 | 21 | 44 | 2.37 | 4.27 | |
| (0.16) | (64-72) | (210-270) | (18-22) | (38-52) | (2.18-2.57) | (3.64-5) | ||
| DMC | 2.05 | 103 | 650 | 24 | 109 | 1.57 | 1.57 | |
| (0.11) | (92-110) | (560-790) | (22-27) | (92-129) | (1.39-1.79) | (1.39-1.79) | ||
Resistant ratios RR50 and RR95 were obtained by calculating the ratio between the LC50 and LC95 between Vauclin and Bora-Bora strains; Synergism ratios SR50 and SR95 were obtained by calculating the ratio between LC50 and LC95 with and without enzyme inhibitor. (CI): Confidence Interval. Significant RR and SR are shown in bold.