Table 5.
Knock-down time and mortality rates of Anopheles arabiensis exposed to Bendiocarb for a period of 60 min in dry and rainy seasons
| Age (days) | Season | Number tested | 24 h mortality | 95% CI | KDT50 | 95% CI | KDT95 | 95% CI | KDT50 ratio (RR) |
|---|---|---|---|---|---|---|---|---|---|
| 2 | Dry | 800 | 94.0 | 91.7–96.3 | 59.3 | 57.5–61.2 | 125.2 | 119.7–131.3 | 4.5 |
| Rain | 800 | 95.7 | 94.0–97.5 | 25.7 | 24.5–26.9 | 57.4 | 54.1–61.0 | 2.0 | |
| 3 | Dry | 800 | 95.3 | 92.9–97.6 | 47.5 | 46.2–48.9 | 100.3 | 96.3–104.7 | 3.6 |
| Rain | 800 | 96.8 | 95.4–98.1 | 25.1 | 24.1–26.2 | 56.1 | 53.1–59.4 | 1.9 | |
| 5 | Dry | 800 | 98.0 | 97.1–98.9 | 44.1 | 42.7–45.6 | 93.1 | 89.1–97.6 | 3.3 |
| Rain | 800 | 98.8 | 97.7–99.8 | 26.8 | 24.3–29.4 | 59.8 | 54.1–66.3 | 2.1 | |
| 10 | Dry | 800 | 99.3 | 98.4–100.1 | 28.9 | 28.1–29.9 | 61.2 | 58.8–63.8 | 2.2 |
| Rain | 800 | 99.8 | 99.1–100.4 | 39.2 | 37.7–40.7 | 87.5 | 82.8–92.8 | 3.0 | |
| Controla | Dry | 800 | 100 | – | 13.3 | – | 27.1 | – | – |
| Rain | 800 | 100 | – | 12.9 | – | 27.3 | – | – |
aControl was Anopheles gambiae Kisumu strain aged 2 days old