Table 2 Bioassay results for tests on sample of collected nets, by site and collection time
Susceptible strain | Wild caught | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
Site | No of nets | Mean (SD) deltamethrin concentration (mg/m2by XRF) | Ave kd30 % | Range kd30 % | Ave kd60 % | Range kd60 % | Ave mort24h % | Range mort24h % | Ave kd30 % | Range kd30 % | Ave kd60 % | Range kd60 % | Ave mort24h % | Range mort24h % |
A | 4 | 69.1 (8.8) | 100 | 100–100 | 100 | 100–100 | 100 | 100–100 | ||||||
B | 4 | 71.9 (18.4) | 100 | 100–100 | 100 | 100–100 | 100 | 100–100 | ||||||
C | 4 | 67.0 (7.5) | 100 | 100–100 | 100 | 100–100 | 100 | 100–100 | ||||||
D | 4 | 65.0 (6.3) | 100 | 100–100 | 100 | 100–100 | 100 | 100–100 | ||||||
E | 4 | 45.9 (16.1) | 99.4 | 97.5–100 | 99.4 | 97.5–100 | 96.2 | 92.3–100 | ||||||
F | 4 | 50.2 (28.3) | 100 | 100–100 | 100 | 100–100 | 100 | 100–100 | ||||||
J | 4 | 59.8 (2.6) | 93.8 | 82.5–100 | 98.1 | 92.5–100 | 96.3 | 85.0–100 | ||||||
3–6 months | 28 | 61.3 (16.2) | 99.0 | 82.5–100 | 99.6 | 92.5–100 | 98.9 | 85.0–100 | ||||||
K | 4 | 37.1 (11.3) | 100 | 100–100 | 100 | 100–100 | 99.4 | 97.5–100 | 94.1 | 85.9–100 | 98.4 | 96.0–100 | 100.0 | 100–100 |
L | 4 | 46.5 (8.7) | 95.6 | 85.0–100 | 96.9 | 87.5–100 | 93.8 | 87.5–100 | 90.4 | 82.5–93.3 | 98.2 | 97.5–100 | 73.7 | 61.9–95.6 |
M | 4 | 29.4 (28.1) | 97.5 | 90.0–100 | 99.4 | 97.5–100 | 100 | 100–100 | 95.2 | 90.2–100 | 97.6 | 95.0–100 | 95.7 | 90.0–100 |
N | 4 | 52.8 (8.4) | 91.1 | 64.3–100 | 96.4 | 85.7–100 | 92.8 | 78.6–100 | 92.6 | 85.7–97.4 | 91.7 | 74.4–100 | 86.6 | 67.7–100 |
P | 4 | 40.3 (20.8) | 90.0 | 60.0–100 | 91.9 | 77.5–100 | 86.3 | 77.5–100 | 100 | 97.5–100 | 98.1 | 92.5–100 | 83.7 | 66.7–97.6 |
Q | 4 | 37.5 (20.1) | 89.6 | 63.4–100 | 98.7 | 97.6–100 | 94.5 | 82.9–100 | 96.3 | 95.0–97.6 | 97.5 | 95.0–100 | 92.2 | 83.4–97.6 |
R | 4 | 47.2 (31.6) | 86.3 | 50.0–100 | 93.8 | 75.0–100 | 91.7 | 80.0–100 | 89.7 | 78.7–97.5 | 96.6 | 91.5–100 | 96.5 | 88.8–100 |
S | 4 | 40.5 (39.7) | 78.4 | 25.6–97.6 | 93.7 | 82.1–100 | 83.3 | 33.3–100 | 89.0 | 70.0–97.7 | 94.8 | 84.2–100 | 93.2 | 80.6–100 |
T | 4 | 51.9 (23.8) | 90.1 | 67.5–100 | 93.2 | 75.0–100 | 96.9 | 87.5–100 | 93.6 | 87.8–100 | 98.1 | 92.3–100 | 90.2 | 73.7–100 |
U | 4 | 37.6 (17.4) | 87.6 | 70.0–100 | 95.6 | 87.5–100 | 88.2 | 72.5–100 | 83.8 | 50.0–97.6 | 92.8 | 80.0–100 | 91.9 | 79.0–97.9 |
J | 4 | 49.5 (21.8) | 100 | 100–100 | 100 | 100–100 | 100 | 100–100 | 89.2 | 59.5–100 | 94.1 | 76.3–100 | 35.3 | 5.1–42.3 |
14–20 months | 44 | 42.8 (21.4) | 91.4 | 25.6–100 | 96.3 | 75.0–100 | 93.3 | 33.3–100 | 92.2 | 50.0–100 | 96.2 | 74.4–100 | 85.4 | 5.1–100 |
K | 4 | 35.8 (11.1) | 100 | 100–100 | 100 | 100–100 | 98.6 | 94.3–100 | 93.8 | 85.0–100 | 96.9 | 90.0–100 | 61.3 | 30.0–90.0 |
L | 4 | 49.8 (6.4) | 100 | 100–100 | 100 | 100–100 | 97.4 | 94.7–100 | 90.0 | 70.0–100 | 96.9 | 92.5–100 | 54.4 | 45.0–60.0 |
M | 4 | 73.6 17.7) | 100 | 100–100 | 100 | 100–100 | 97.4 | 94.7–100 | 92.8 | 86.8–97.4 | 96.7 | 92.1–100 | 71.6 | 62.2–89.2 |
N | 4 | 34.0 (18.4) | 97.5 | 92.5–100 | 99.4 | 97.5–100 | 88.1 | 75.0–100 | 71.7 | 21.6–95.0 | 84.9 | 57.9–100 | 32.4 | 15.4–52.5 |
P | 4 | 47.1 (20.5) | 100 | 100–100 | 100 | 100–100 | 90.1 | 79.0–100 | 94.1 | 86.8–100 | 95.4 | 89.5–100 | 34.5 | 5.4–56.8 |
Q | 4 | 43.8 (17.7) | 100 | 100–100 | 100 | 100–100 | 93.9 | 91.9–94.6 | 91.3 | 87.5–97.5 | 88.8 | 82.5–95.0 | 56.9 | 52.5–62.5 |
R | 4 | 33.5 (22.4) | 100 | 100–100 | 100 | 100–100 | 89.2 | 77.1–100 | 75.0 | 57.5–92.5 | 78.8 | 55.0–95.0 | 28.1 | 0.0–50.0 |
S | 4 | 36.9 (8.2) | 98.8 | 95.0–100 | 100 | 100–100 | 96.6 | 89.2–100 | 59.4 | 32.5–75.0 | 63.1 | 35.0–77.5 | 38.8 | 15.0–85.0 |
T | 4 | 37.7 (18.9) | 88.1 | 57.5–100 | 89.4 | 62.5–100 | 89.6 | 68.4–100 | 67.5 | 25.0–92.5 | 70.6 | 30.0–100 | 23.8 | 12.5–37.5 |
U | 4 | 58.4 17.1) | 100 | 100–100 | 100 | 100–100 | 100 | 100–100 | 98.8 | 97.5–100 | 100 | 100–100 | 70.6 | 62.5–77.5 |
26–32 months | 40 | 45.1 (19.1) | 98.4 | 57.5–100 | 98.9 | 62.5–100 | 94.1 | 68.4–100 | 83.4 | 21.6–100 | 87.2 | 30.0–100 | 47.2 | 0.0–90.0 |