Table 5.
Percentage mortality of SENN-DDT and MBN-DDT mosquitoes (females and males) to DDT and deltamethrin following exposure to synergists (n = number of mosquitoes tested)
| Colony | Treatment | n | % Mortality (± SD) |
|---|---|---|---|
|
SENN-DDT |
PBO (4%) + DDT (4%) |
107 |
3.9 (± 4.7) |
| |
DDT (4%) only |
107 |
13.0 (± 8.6) |
| |
PBO (4%) only |
80 |
0 |
| |
PBO (4%) + deltamethrin (0.05%) |
126 |
83.8 (± 1.3)* |
| |
Deltamethrin (0.05%) only |
89 |
25.3 (± 15.6)* |
| |
PBO (4%) only |
80 |
0 |
| |
PBO (4%) + permethrin (0.75%) |
75 |
0 |
| |
Permethrin (0.75%) only |
72 |
1.3 (± 2.3) |
| |
PBO (4%) only |
79 |
2.7 (± 4.6) |
|
MBN-DDT |
PBO (4%) + DDT (4%) |
79 |
2.3 (± 2.1) |
| |
DDT (4%) only |
71 |
1.3 (± 2.3) |
| |
PBO (4%) only |
81 |
1.1 (± 2.0) |
| |
PBO (4%) + deltamethrin (0.05%) |
78 |
70.3 (± 16.5)* |
| |
Deltamethrin (0.05%) only |
97 |
2.2 (± 4.3)* |
| |
PBO (4%) only |
81 |
1.1 (± 2.0) |
| |
PBO (4%) + permethrin (0.75%) |
74 |
1.3 (± 2.3) |
| |
Permethrin (0.75%) only |
73 |
6.7 (± 4.6) |
| |
PBO (4%) only |
74 |
1.3 (± 2.3) |
|
MBN-DDT |
DEM (7%) + DDT (4%) |
80 |
1.5 (± 2.6) |
| |
DDT (4%) only |
72 |
4.0 (± 4.0) |
| |
DEM (7%) only |
82 |
3.5 (± 3.7) |
| |
DEM (7%) + deltamethrin (0.05%) |
74 |
46.0 (± 1.7)* |
| |
Deltamethrin (0.05%) only |
78 |
16.8 (± 10.2)* |
| |
DEM (7%) only |
82 |
3.5 (± 3.7) |
| |
DEM (7%) + permethrin (0.75%) |
75 |
1.7 (± 2.9) |
| |
Permethrin (0.75%) only |
75 |
0 |
| DEM (7%) only | 69 | 3.0 (± 2.7) |
* Indicates significant difference between insecticide versus synergist and insecticide.