TABLE 2.
Summary of the 16 physical characteristics of larval sites measured in Rabai, Kenya
| Forest Ae. aegypti present | Forest Ae. aegypti absent | Peridomestic Ae. aegypti present | Peridomestic Ae. aegypti absent | Domestic Ae. aegypti present | |
|---|---|---|---|---|---|
| (n = 15) | (n = 22) | (n = 8) | (n = 1) | (n = 22) | |
| Longest diameter (cm) | 11.0 ± 4.5 a | 8.2 ± 3.8 | 36.6 ± 31.9 | 104 | 44.3 ± 12.3 |
| Second diameter (cm) | 7.7 ± 2.5 | 5.5 ± 2.5 | 28.6 ± 22.1 | 51 | 43.9 ± 13.4 |
| Circumference (cm) | 30.5 ± 11.7 | 21.8 ± 9.4 | 135.4 ± 150.8 | 487 | 139.2 ± 38.9 |
| Surface area (cm2) | 80 ± 52 | 41 ± 33 | 1448 ± 1996 | 6452 | 1651 ± 810 |
| Water volume (ml) | 488 ± 361 | 482 ± 559 | 12,505 ± 15,958 | 38,712 | 38,803 ± 50,210 |
| Container depth (cm) | 14.1 ± 7.9 | 17.7 ± 17.8 | 36.2 ± 31.4 | 28 | 62.0 ± 22.7 |
| Height of container opening (cm) | 67.1 ± 35.5 | 88.3 ± 46.6 | 35.2 ± 35.5 | 8 | 64.5 ± 25.0 |
| Water depth (cm) | 10.2 ± 6.3 | 14.7 ± 16.6 | 11.3 ± 9.0 | 6 | 22.5 ± 20.4 |
| Temperature difference (°C) b | 1.4 ± 1.8 | 1.3 ± 2.0 | 2.4 ± 2.9 | 9.1 | 1.1 ± 1.7 |
| Humidity difference (%) b | 0.2 ± 5.9 | −0.8 ± 6.9 | −2.2 ± 9.4 | −14.5 | 0.6 ± 4.2 |
| Canopy coverage (%) | 92 ± 6 | 90 ± 8 | 75 ± 18 | 15 | 100 ± 1 |
| pH | 6.81 ± 0.75 | 6.55 ± 0.92 | 8.06 ± 0.69 | 7.42 | 8.06 ± 0.93 |
| Conductivity (µS/cm) | 1119.1 ± 849.3 | 712.1 ± 725.0 | 468.8 ± 734.4 | 727 | 618.4 ± 827.4 |
| Salinity (ppt) | 0.56 ± 0.42 | 0.36 ± 0.36 | 0.24 ± 0.36 | 0.36 | 0.31 ± 0.41 |
| Total dissolved solids (ppm) | 797.5 ± 596.0 | 509.3 ± 514.3 | 332.4 ± 520.9 | 516 | 440.0 ± 588.9 |
| Water temperature (°C) | 27.2 ± 1.0 | 27.8 ± 1.1 | 27.1 ± 2.4 | 27.9 | 26.8 ± 0.9 |
a
Mean ± standard deviation (SD).
b
Ambient temperature and humidity at the larval sites minus the temperature and humidity in the field station measured at the same time of the day.