Table 6 Factors influencing the number of pupae of Aedes aegypti and Aedes albopictus in Brazzaville
Factor | Modality | Ae. aegypti | Ae. albopictus | ||||
|---|---|---|---|---|---|---|---|
Estimate | SE | z-value | Estimate | SE | z-value | ||
Neighbourhoods location | Downtown | Ref | Ref | Ref | Ref | Ref | Ref |
Suburb | − 25.81*** | 0.7024 | − 36.74 | 1.38** | 0.43 | 3.25 | |
Rural | 3.55** | 1.19 | 2.970 | 0.52 | 0.73 | 0.72 | |
Container types | Axils of plants | Ref | Ref | Ref | Ref | Ref | Ref |
Discarded tanks | 170.22 | 6.71 × 107 | 0 | 0.92 | 3.41 | 0.27 | |
Flower-pots | 169.99 | 6.71 × 107 | 0 | 1.42 | 3.47 | 0.41 | |
Miscellaneous | 132.82 | 6.71 × 107 | 0 | − 0.95 | 3.47 | − 0.28 | |
Storage tanks | 148.40 | 6.71 × 107 | 0 | − 1.04 | 3.43 | − 0.30 | |
Used tyres | 175.28 | 6.71 × 107 | 0 | 1.61 | 3.54 | 0.45 | |
Container colour | Dark | Ref | Ref | Ref | Ref | Ref | Ref |
Light | − 11.27*** | 1.37 | − 8.22 | 1.35 | 0.88 | 1.53 | |
Transparent | − 38.44*** | 1.58 | − 24.28 | − 0.14 | 0.99 | − 0.14 | |
Container material | Metal | Ref | Ref | Ref | na | na | na |
Plastic | 15.01 | 0.89 | 16.83 | na | na | na | |
Rubber | na | na | na | na | na | na | |
Miscellaneous | 30.05 | 1.40 | 21.46 | na | na | na | |
Container volume | Low (< 5 l) | Ref | Ref | Ref | na | na | na |
Medium (5–50 l) | − 13.92*** | 0.66 | − 20.94 | na | na | na | |
High (> 50 l) | 23.68*** | 1.58 | 14.91 | na | na | na | |
Water volume | Low (< 5 l) | Ref | Ref | Ref | na | na | na |
Medium (5–50 l) | 4.79*** | 0.80 | 5.96 | na | na | na | |
High (> 50 l) | − 84.72*** | 4.69 | − 18.05 | na | na | na | |
Water source | Tap | 4.06*** | 1.13 | 3.58 | na | na | na |
Rain | Ref | Ref | Ref | na | na | na | |
Water quality | Clear | Ref | Ref | Ref | Ref | Ref | Ref |
Turbid | − 0.97 | 0.73 | − 1.325 | 1.98*** | 0.44 | 4.37 | |
Polluted | 3.24 | 2.19 | 1.48 | − 30.34 | 7.66×107 | 0 | |
Shade | None | − 9.75*** | 0.65 | − 14.99 | − 1.12** | 0.39 | − 2.82 |
Partial | − 10.26 | 1.06 | − 9.65 | − 0.7451 | 0.59 | − 1.25 | |
Full | Ref | Ref | Ref | Ref | Ref | Ref | |
Plant residues | Yes | 9.33*** | 0.71 | 13.10 | na | na | na |
No | Ref | Ref | Ref | na | na | na | |
Presence of surrounding vegetation | Yes | 15.56*** | 0.96 | 16.14 | 1.47*** | 0.4212 | 3.49 |
No | Ref | Ref | Ref | Ref | Ref | Ref | |
Distance to nearest plant | 0–5 m | 19.56*** | 1.04 | 18.71 | na | na | na |
5–10 m | 18.94*** | 2.09 | 9.02 | na | na | na | |
> 10 m | Ref | Ref | Ref | na | na | na | |
Distance to nearest building | 0–5 m | Ref | Ref | Ref | Ref | Ref | Ref |
5–10 m | 5.69*** | 0.83 | 6.77 | − 1.69** | 0.57 | − 3.23 | |
Distance to ground | 0–1 m | Ref | Ref | Ref | na | na | na |
1–3 m | 4.94* | 2.38 | 2.07 | na | na | na | |