Instars of mosquito larvae | Concentrations (ppm) | Period of exposure (hours) | ||
---|---|---|---|---|
 |  | 24 | 48 | 72 |
First | 15 | 60 ± 1.92 | 66.67 ± 5.67 | 70 ± 2.93 |
 | 10 | 40 ± 5.57 | 43.33 ± 3.84 | 46.66 ± 3.84 |
 | 5 | 40 ± 5.57 | 40 ± 5.67 | 53.33 ± 1.92 |
 | Malathion (5 ppm) | 100 ± 0.00 | 100 ± 0.00 | 100 ± 0.00 |
Fourth | 15 | 40 ± 1.92 | 43.33 ± 3.84 | 46.66 ± 5.57 |
 | 10 | 33.33 ± 3.84 | 40 ± 1.92 | 43.33 ± 5.56 |
 | 5 | 30 ± 5.57 | 33.33 ± 2.93 | 36.67 ± 2.84 |
 | Malathion (5 ppm) | 100 ± 0.00 | 100 ± 0.00 | 100 ± 0.00 |