Table 3: Larvicidal activity of organophosphates against early fourth instars of Aedes aegypti
| S. No. |
Insecticides |
LC50 in ppm |
LC90 in ppm |
χ2
(df)
|
Slope ± SE |
| 1 |
Malathion |
0.0548
(0.0472-0.0620) |
0.1058
(0.0930-0.1252) |
1.735 (4) |
4.5369±0.72 |
| 2 |
Fenitrothion |
0.00063
(0.0003-0.0013) |
0.00392
(0.0016-0.3509) |
5.084 (4) |
0.8086±0.36 |
LC50 - Lethal Concentration that kills 50% of the exposed larvae, LC90 - Lethal Concentration that kills 90% of the exposed larvae; Values in parentheses indicate the lower and upper 95% fiducial limits; χ2 = Chi-square, S.E. = Standard Error, df = degree of freedom