Table 1.
Results of the insecticide susceptibility tests conducted on wild female Anopheles gambiae s.l mosquitoes♣
|
Insecticide tested |
Total no. exposed |
Knock Down (KD) |
Mortality |
|||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 10 min | 15 min | 20 min | 30 min | 40 min | 50 min | 60 min | %KD 60 min | Total no. dead | % Dead | Class | ||
| Control |
123 |
0 |
0 |
0 |
0 |
0 |
1 |
1 |
0.8 |
1.0 |
0.8 |
- |
| 4% DDT |
124 |
0 |
0 |
7 |
44 |
94 |
114 |
118 |
95.2 |
124.0 |
100.0 |
*** |
| 0.75% Permethrin |
125 |
0 |
8 |
20 |
71 |
95 |
122 |
124 |
99.2 |
119.0 |
95.2 |
** |
| 0.05% Lambda cyhalothrin |
123 |
0 |
0 |
2 |
23 |
60 |
81 |
92 |
74.8 |
111.0 |
90.2 |
** |
| 0.05% Deltamethrin |
96 |
0 |
5 |
16 |
37 |
60 |
74 |
79 |
85.9 |
92 |
95.8 |
** |
| 0.4% Dieldrin | 124 | 0 | 0 | 0 | 0 | 0 | 2 | 3 | 2.4 | 120.0 | 96.8 | ** |
♣ 96% of mosquitoes of this species complex in the study area at the time were identified by PCR as Anopheles arabiensis.
Class (Susceptibility grading).
*** The percentage mortality value indicates 100% susceptibility.
** The percentage mortality value indicates insecticide tolerance and possibility of resistance that needs to be confirmed.