Table 2.
Larvicidal activity of the leaf extracts of Ricinus communis against Aedes aegypti larvae.
| Time | Larval instars | Lethal concentration | LFL | UFL | Chi-square | P value | Regression equation | |
|---|---|---|---|---|---|---|---|---|
| 12 h | 2nd | LC50 | 410.812 | 333.837 | 607.800 | 0.888 | 0.828 | Y = −2.15 + 0.005x |
| LC90 | 655.074 | 504.179 | 1051.09 | 0.888 | 0.828 | Y = −2.06 + 0.005x | ||
| 3rd | LC50 | 612.106 | 416.283 | 2047.60 | 1.225 | 0.738 | Y = −2.98 + 0.003x | |
| LC90 | 1007.14 | 642.127 | 3716.84 | 1.225 | 0.738 | Y = −2.98 + 0.003x | ||
| 24 h | 2nd | LC50 | 362.911 | 303.314 | 495.486 | 0.141 | 0.986 | Y = −1.84 + 0.0050x |
| LC90 | 614.370 | 485.639 | 911.276 | 0.141 | 0.986 | Y = −1.84 + 0.005x | ||
| 3rd | LC50 | 410.824 | 324.773 | 656.965 | 0.88 | 0.821 | Y = −1.62 + 0.004x | |
| LC90 | 734.236 | 543.609 | 1295.86 | 0.88 | 0.821 | Y = −1.62 + 0.004x | ||
| 36 h | 2nd | LC50 | 188.196 | 172.390 | 207.370 | 0.778 | 0.809 | Y = −1.42 + 0.007x |
| LC90 | 357.114 | 317.509 | 418.588 | 0.778 | 0.809 | Y = −1.42 + 0.007x | ||
| 3rd | LC50 | 242.616 | 220.363 | 275.703 | 4.170 | 0.253 | Y = −1.719 + 0.007x | |
| LC90 | 423.457 | 368.578 | 514.795 | 4.170 | 0.253 | Y = −1.719 + 0.007x | ||
| 48 h | 2nd | LC50 | 136.243 | 116.3101 | 155.477 | 6.778 | 0.011 | Y = −1.721 + 0.159x |
| LC90 | 245.731 | 218.209 | 293.903 | 6.778 | 0.011 | Y = −1.721 + 0.159x | ||
| 3rd | LC50 | 136.981 | 116.7967 | 156.306 | 2.270 | 0.059 | Y = −1.558 + 0.418x | |
| LC90 | 251.956 | 211.792 | 271.888 | 2.270 | 0.059 | Y = −1.558 + 0.418x | ||
LFL: Lower Fiducial Limit, UFL: Upper Fiducial Limit.