Table 3.
Effect of fish size, mosquito species, number of larvae exposed, supplementary food and hour of larval exposure on the predation of Clarias gariepinus on mosquito larvae
| Variable | Average No. of larvae consumed | Crude mean difference in the Average No. of larvae consumed during light or night hours (95 % CI) | Adjusted mean difference in the Average Number of mosquito larvae during light or night hours (95 % CI) |
|---|---|---|---|
| Fish size | |||
| Large | 77.31 | – | – |
| Small | 90.67 | 13.36 (−6.57, 33.29) | 13.36 (4.57, 22.15) |
| Mosquito | |||
| Culex | 77.94 | – | – |
| Anopheles | 90.04 | 12.10 (−7.87, 32.07) | 12.10 (3.31, 20.89) |
| No. of larvae | |||
| 50 | 43.05 | – | – |
| 100 | 82.03 | 38.97 (24.35, 53.59) | 38.97 (28.21, 49.74) |
| 150 | 126.90 | 83.85 (69.22, 98.47) | 83.85 (73.08, 94.61) |
| Fish food | |||
| No food | 82.71 | – | – |
| Inadequate | 84.25 | 1.54 (−23.35, 26.43) | 1.54 (−9.22, 12.30) |
| Adequate | 85.03 | 2.32 (−22.57, 27.21) | 2.31 (−8.45, 13.08) |
| Hours of exposure | |||
| Light (6:00 am–6:00 pm) | 68.96 | – | – |
| Night (6:00 pm–6:00 am) | 99.03 | 30.06 (11.20, 48.93) | 30.06 (21.27, 38.85) |
Note: Average larvae consumed is the mean of the number of larvae consumed for three replicate experiments