Table 1.
The mean (SE) monthly mortality rate of An. marajoara after 24 h post-exposure to six different insecticides sprayed on four different surfaces: painted wooden wall (WP1), unpainted wooden wall (WP2), plastered cement wall (CP1), and the unplastered cement wall (CP2)
| Insecticide | Substrate | Days post IRS | ||||||||
|---|---|---|---|---|---|---|---|---|---|---|
| 1 | 30 | 60 | 90 | 120 | 150 | 180 | 210 | 240a | ||
| Alpha-cypermethrin SC | WP1 | 1.00 (−) | 1.00 (−) | 0.99 (0.02) | 0.78 (0.04) | 0.81 (0.04) | 0.49 (0.07) | 0.25 (0.06) | – | – |
| WP2 | 0.82 (0.05) | 0.92 (0.03) | 0.47 (0.14) | 0.43 (0.12) | – | – | – | – | – | |
| CP1 | 0.99 (0.02) | 0.77 (0.06) | 0.22 (0.05) | – | – | – | – | – | – | |
| CP2 | 0.97 (0.03) | 0.51 (0.04) | 0.49 (0.08) | – | – | – | – | – | – | |
| Etofenprox WP | WP1 | 1.00 (−) | 1.00 (−) | 0.85 (0.04) | 0.82 (0.05) | 0.58 (0.10) | 0.30 (0.08) | – | – | – |
| WP2 | 1.00 (−) | 0.97 (0.02) | 0.98 (0.03) | 0.97 (0.02) | 0.86 (0.06) | 0.68 (0.08) | 0.33 (0.08) | – | – | |
| CP1 | 1.00 (−) | 0.93 (0.03) | 0.87 (0.05) | 0.40 (0.07) | 0.54 (0.08) | – | – | – | – | |
| CP2 | 0.97 (0.02) | 0.67 (0.11) | 0.54 (0.07) | – | – | – | – | – | – | |
| Lambda-cyhalothrin WP | WP1 | 1.00 (−) | 0.98 (0.02) | 0.62 (0.11) | 0.43 (0.07) | – | – | – | – | – |
| WP2 | 0.96 (0.02) | 0.96 (0.03) | 0.73 (0.05) | 0.63 (0.10) | – | – | – | – | – | |
| CP1 | 0.88 (0.04) | 0.79 (0.06) | 0.03 (0.02) | – | – | – | – | – | – | |
| CP2 | 0.98 (0.02) | 0.74 (0.05) | 0.60 (0.11) | – | – | – | – | – | – | |
| Deltamethrin WG | WP1 | 1.00 (−) | 1.00 | 0.98 (0.03) | 0.97 (0.03) | 0.95 (0.02) | 0.94 (0.02) | 0.85 (0.05) | 0.82 (0.04) | 0.83 (0.06) |
| WP2 | 1.00 (−) | 0.98 (0.02) | 0.58 (0.08) | 0.94 (0.03) | 0.94 (0.03) | 0.94 (0.03) | 0.92 (0.04) | 0.98 (0.02) | 1.00 (−) | |
| CP1 | 1.00 (−) | 1.00 (−) | 0.90 (0.06) | 0.87 (0.04) | 0.74 (0.07) | 0.68 (0.08) | – | – | – | |
| CP2 | 1.00 (−) | 0.99 (0.02) | 0.85 (0.06) | 0.73 (0.13) | 0.66 (0.07) | – | – | – | – | |
| Bendiocarb WP | WP1 | 1.00 (−) | 1.00 (−) | 1.00 (−) | 1.00 (−) | 0.53 (0.13) | 0.60 (0.12) | – | – | – |
| WP2 | 1.00 (−) | 1.00 (−) | 1.00 (−) | 1.00 (−) | 0.46 (0.12) | 0.65 (0.14) | – | – | – | |
| CP1 | 1.00 (−) | 0.11 (0.03) | 0.03 (0.02) | – | – | – | – | – | – | |
| CP2 | 1.00 (−) | 0.05 (0.03) | 0.06 (0.02) | – | – | – | – | – | – | |
| Pirimiphos-methyl CS | WP1 | 1.00 (−) | 1.00 (−) | 1.00 (−) | 0.98 (0.03) | 1.00 (−) | 1.00 (−) | 1.00 (−) | 0.98 (0.02) | 0.79 (0.10) |
| WP2 | 1.00 (−) | 1.00 (−) | 0.94 (0.04) | 0.79 (0.08) | 0.84 (0.05) | 0.87 (0.05) | 0.73 (0.10) | 0.66 (0.07) | – | |
| CP1 | 1.00 (−) | 0.98 (0.03) | 1.00 (−) | 0.92 (0.06) | 0.69 (0.11) | 0.95 (0.04) | 0.65 (0.09) | 1.00 (−) | 0.90 (0.06) | |
| CP2 | 1.00 (−) | 0.97 (0.02) | 1.00 (−) | 0.98 (0.02) | 1.00 (−) | 0.98 (0.02) | 0.97 (0.04) | 0.92 (0.03) | 0.98 (0.03) | |
aThe experiments were maintained until a mortality rate of less than 80% was observed for two consecutive months