Table 5.
Deltamethrin concentration/time of exposure | Assessed parameters | DH | AB | SF | SXM | ABY | BM |
---|---|---|---|---|---|---|---|
0.06%/1 h | KD rate | 0.93 | 0.94 | 0.98 | 1 | 0.96 | 0.99 |
Mortality rate | 0.83 | 0.64 | 0.79 | 0.88 | 0.79 | 0.90 | |
0.08%/1 h | KD rate | 1 | 0.96 | 1 | 1 | 0.99 | 1 |
Mortality rate | 0.94 | 0.93 | 0.81 | 0.98 | 0.85 | 0.99 | |
0.05%/2 h | KRR50 (ci 95%) | 17.7 (16.7–20.5) | 28.1 (24.2–34.9) | 13.7 (13.0–14.4) | 12.4 (12.0–12.8) | 8.0 (7.8–8.3) | 13.6 (13.1–14.2) |
KD rate: rate of knockdown mosquitoes after one hour of exposition, KDT50: time (min) necessary to knock down 50% of mosquitoes
KDT50 were determined using papers impregnated with 0.05 g/100 ml deltamethrin following WHO insecticide testing recommendations, KRR50: ratio between field samples KDT50 and susceptible Bora Bora strain KDT50, DH Deshaies, AB Anse-Bertrand, SF Saint-François, SXM Saint-Martin, ABY Les Abymes, BM Baie-Mahault