Table 1.
Cumulative BG-Sentinel™ trap catches for immediate release (IR)1 and delayed release (DR)2 trials with Ae. aegypti3 exposed to DDT-treated fabrics
| Cumulative mean percentage (±SD) of released Ae. aegypti recaptured by time point4 | |||||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Surface area coverage |
Release5/Treatments |
←‒‒‒Day 1‒‒‒‒‒→ |
←‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒Day 2‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒→ |
←‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒Day 3‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒‒→ |
|
Mean day-time (12 hr) conditions |
|||||||||
| |
|
13:30 h |
17:30 h |
05:30 h |
09:30 h |
13:30 h |
17:30 h |
05:30 h |
09:30 h |
13:30 h |
17:30 h |
N6 |
Temp (°C) |
RH (%) |
Light intensity (lx/ft2) |
|
75% |
IRa |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Control |
91.9a (±4.5) |
92.9a (±3.5) |
92.9a (±3.5) |
93.4a (±3.5) |
93.4a (±3.5) |
93.4a (±3.5) |
- |
- |
- |
- |
185/198 |
33.4 |
25.9 |
382.1 |
|
| DDT (2 g ai/m2) |
89.2a (±5.3) |
89.2a (±5.3) |
90.7a (±4.1) |
90.7a (±4.1) |
91.8a (±3.8) |
91.8a (±3.8) |
- |
- |
- |
- |
178/194 |
31.9 |
28.6 |
331.6 |
|
|
DRa |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Control |
- |
- |
- |
89.3a (±4.8) |
90.3a (±3.7) |
90.3a (±3.7) |
90.3a (±3.7) |
90.3a (±3.7) |
90.3a (±3.7) |
90.3a (±3.7) |
177/196 |
33.5 |
25.9 |
371.7 |
|
| DDT (2 g ai/m2) |
- |
- |
- |
90.7a (±5.2) |
91.8a (±3.8) |
91.8a (±3.8) |
91.8a (±3.8) |
91.8a (±3.8) |
91.8a (±3.8) |
91.8a (±3.8) |
178/194 |
31.9 |
28.4 |
318.8 |
|
| 50% |
IRa |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Control |
79.9a (±10.6) |
83.9a (±4.9) |
84.4a (±5.9) |
85.4a (±5.5) |
85.4a (±5.5) |
85.4a (±5.5) |
|
|
|
|
170/199 |
28.7 |
31.9 |
479.0 |
|
| DDT (2 g ai/m2) |
87.4a (±9.6) |
89.9a (±7.7) |
90.4a (±7.7) |
90.4a (±7.7) |
90.4a (±7.7) |
90.4a (±7.7) |
- |
- |
- |
- |
178/198 |
29.7 |
69.1 |
454.5 |
|
|
DRa |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Control |
|
|
|
79.2a (±10.8) |
85.3a (±5.9) |
85.3a (±5.9) |
85.3a (±5.9) |
85.3a (±5.9) |
85.8a (±6.3) |
85.8a (±6.3) |
169/197 |
30.8 |
66.7 |
494.2 |
|
| DDT (2 g ai/m2) |
|
|
|
76.5a (±11.1) |
84.5a (±3.4) |
84.5a (±3.4) |
85.0a (±3.5) |
85.0a (±3.5) |
85.5a (±3.5) |
85.5a (±3.5) |
171/200 |
29.2 |
71.8 |
501.2 |
|
| 25% |
IRa |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Control |
94.4a (±4.7) |
95.9a (±4.5) |
96.4a (±4.6) |
96.4a (±4.6) |
96.4a (±4.6) |
96.4a (±4.6) |
- |
- |
- |
- |
189/196 |
28.1 |
24.4 |
192.16 |
|
| DDT (2 g ai/m2) |
93.9a (±3.0) |
93.9a (±3.0) |
93.9a (±3.0) |
93.91a (±2.95) |
93.9a (±3.0) |
93.9a (±3.0) |
- |
- |
- |
- |
185/197 |
27.4 |
26.0 |
126.2 |
|
| DDT (1 g ai/m2) |
87.2a (±14.6) |
93.3a (±3.9) |
93.9a (±3.6) |
93.9a (±3.6) |
93.9a (±3.6) |
93.9a (±3.6) |
|
|
|
|
183/195 |
27.1 |
31.7 |
76.4 |
|
|
DRa |
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
| Control |
- |
- |
- |
77.2a (±8.9) |
91.2a (±3.7) |
91.2a (±3.7) |
91.2a (±3.7) |
91.2a (±3.7) |
91.2a (±3.7) |
91.2a (±3.7) |
176/193 |
28.4 |
25.3 |
205.5 |
|
| DDT (2 g ai/m2) |
- |
- |
- |
90.0a (±5.4) |
95.5a (±2.6) |
95.5a (±2.6) |
95.5a (±2.6) |
95.5a (±2.6) |
95.5a (±2.6) |
95.5a (±2.6) |
190/199 |
27.8 |
26.6 |
135.2 |
|
| DDT (1 g ai/m2) | - | - | - | 89.6a (±4.7) | 92.8a (±4.11) | 92.8a (±4.1) | 92.8a (±4.1) | 92.8a (±4.1) | 92.8a (±4.1) | 92.8a (±4.1) | 181/195 | 27.5 | 32.8 | 85.6 | |
1 Cohort exposed from 0600–1200 hours and released immediately afterwards.
2 Cohort exposed from 1200–1800 hours but released only after a holding period of 12 h.
3 3–5 day old starved females.
4 Different lowercase letters in the same column indicate significant differences between mean recapture percentages for released females within release trial types (IR or DR; Kruskal-Wallis 95% confidence limit ) or between IR and DR trials (Mann-U Whitney Test, 95% confidence limit).
5 Different lowercase letters in the same column indicate significant differences between mean recapture percentages for released females between IR and DR trials (Mann-U Whitney Test, 95% confidence limit).
6Total recaptured /total released minus total knock down.