Table 1: Assessment of larvicidal activity of the T. occidentalis leaf extract on A. coluzzi.
Extract Concentration (ppm) |
Larval Density |
|||||
Pre-treatment |
Post-treatment
|
|||||
I |
II |
III |
Total No of mosquitoes exposed |
Total No of mosquito Dead |
Average Dead (%) |
|
Control |
20 |
20 |
20 |
60 |
0 |
0 |
20 |
20 |
20 |
20 |
60 |
5 |
8.3 |
50 |
20 |
20 |
20 |
60 |
9 |
15.0 |
100 |
20 |
20 |
20 |
60 |
21 |
35.0 |
200 |
20 |
20 |
20 |
60 |
32 |
53.3 |
400 |
20 |
20 |
20 |
60 |
57 |
95.0 |
600 |
20 |
20 |
20 |
60 |
60 |
100.0 |
800 |
20 |
20 |
20 |
60 |
60 |
100.0 |
1000 |
20 |
20 |
20 |
60 |
60 |
100.0 |
Total |
180 |
180 |
180 |
540 |
|
|