Environmental factors | An. gambiae (s. l.) | An. christyi | An. pharoensis |
---|
Mean rank | U | p | Mean rank | U | p | Mean rank | U | p |
---|
Habitat permanence |
Temporary | 81.69 | 3137 | 0.455 | 79.9 | 2960.5 | 0.019* | 81.46 | 3115 | 0.047* |
Permanent | 87.37 | | | 89.96 | | | 87.69 | | |
Presence of algae |
Present | 90.08 | 2808 | 0.235 | 91.56 | 2722.5 | 0.09 | 84.85 | 3111.5 | 0.686 |
Absent | 80.77 | | | 79.98 | | | 83.55 | | |
Surface debris |
Absent | 90.21 | 2117 | 0.009* | 79.05 | 2267 | 0.00* | 83.23 | 2746 | 0.429 |
Present | 68.6 | | | 96.27 | | | 85.92 | | |
Intensity of light |
Shade | 41.5 | 228 | 0.028* | 74 | 423 | 0.36 | 93.42 | 426.5 | 0.237 |
Lit | 85.58 | | | 84.37 | | | 83.65 | | |
| An. gambiae (s.l.) | An. christyi | An. pharoensis |
---|
Mean rank | χ2 | df | p | Mean rank | χ2 | df | p | Mean rank | χ2 | df | p |
---|
Water perimeter (m) |
< 10 m | 85.96 | 5.17 | 2 | 0.075 | 83.45 | 2.13 | 2 | 0.343 | 81.3 | 68.74 | 2 | 0.00* |
10–100 m | 83.3 | | | | 90.88 | | | | 83.23 | | | |
> 100 m | 40.25 | | | | 74 | | | | 150 | | | |
Turbidity |
Low | 87.31 | 0.58 | 2 | 0.748 | 90.33 | 5.34 | 2 | 0.06 | 85.71 | 1.95 | 2 | 0.376 |
Medium | 80.54 | | | | 79.9 | | | | 85 | | | |
High | 83.78 | | | | 80.67 | | | | 80.69 | | | |
Distance to nearest house (m) |
≤ 100 | 94.62 | 10.57 | 3 | 0.014* | 76.04 | 24.91 | 3 | 0.00* | 81.14 | 4.57 | 3 | 0.206 |
101–200 | 82.36 | | | | 83.41 | | | | 88.31 | | | |
201–300 | 63.26 | | | | 99.83 | | | | 84.69 | | | |
301–400 | 60.9 | | | | 116.33 | | | | 79 | | | |
Canopy cover |
Open | 89.75 | 7.955 | 2 | 0.019* | 84.42 | 0.454 | 2 | 0.797 | 81.54 | 9.469 | 2 | 0.009* |
Tree | 64.32 | | | | 83.36 | | | | 92.86 | | | |
Shrub | 83.33 | | | | 74 | | | | 79 | | | |
Emergent plant |
Absent | 93.22 | 8.65 | 3 | 0.034* | 82.33 | 7.54 | 3 | 0.057 | 81.29 | 11.84 | 3 | 0.008* |
Grass | 71.81 | | | | 91.57 | | | | 80.28 | | | |
Weeds | 89 | | | | 82.3 | | | | 86.75 | | | |
Grass + weeds | 68.9 | | | | 73.5 | | | | 95.6 | | | |
Substrate type |
Gravel | 71.69 | 2.066 | 2 | 0.356 | 94.44 | 21.06 | 2 | 0.00* | 84.03 | 0.838 | 2 | 0.658 |
Mud | 87.37 | | | | 77.66 | | | | 84.81 | | | |
Stone | 78.42 | | | | 100.24 | | | | 81.3 | | | |
- *Statistically significant at p < 0.05
- Df degree of freedom