Table 3 Levels of cypermethrin and cyhalothrin resistance in different strains of Ae. aegypti
Insecticide | Strain | LC50 (ppm) (95Â % CL) | RRa | Regression equations |
|---|---|---|---|---|
Cypermethrin | SS | 0.00093 (0.00086–0.00100) | 1 | Y = 12.04407 + 3.97312X |
|  | QS | 0.00663 (0.00628–0.00701) | 7.13 | Y = 13.24042 + 6.07821X |
|  | DF | 0.00634 (0.00490–0.00927) | 6.82 | Y = 5.75003 + 2.61641X |
|  | JH | 0.03349 (0.02218–0.06264) | 36.01 | Y = 2.77811 + 1.88336X |
|  | YD | 0.02558 (0.02303–0.02834) | 27.51 | Y = 3.86610 + 2.42842X |
|  | MN | 0.08260 (0.07227–0.09338) | 88.82 | Y = 2.45754 + 2.26918X |
Cyhalothrin | SS | 0.00091 (0.00079–0.00105) | 1 | Y = 7.75649 + 2.55102X |
|  | QS | 0.00568 (0.00531–0.00607) | 6.24 | Y = 9.59773 + 4.27341X |
|  | DF | 0.00439 (0.00382–0.00505) | 4.82 | Y = 7.39856 + 3.13863X |
|  | JH | 0.03879 (0.03518–0.04299) | 42.63 | Y = 4.90089 + 3.47272X |
|  | YD | 0.02794 (0.02530–0.03092) | 30.70 | Y = 3.79551 + 2.44265X |
|  | MN | 0.08087 (0.06909–0.09386) | 88.87 | Y = 2.59628 + 2.37709X |