Figure 1
Daily oviposition patterns of Anopheles gambiae s.s. on different oviposition substrates in a no-choice bioassay. Mean percentage (± SE) of the total eggs laid on each of three different oviposition substrates during 1-h time intervals. n = 24 cages containing five females each. Mosquitoes in each cage were exposed to one type of substrate under a natural LD cycle (sunset at 18:00).
Figure 2
Daily oviposition patterns of Anopheles gambiae s.s. on different oviposition substrates in a choice bioassay. Mean percentage (± SE) of the total eggs laid on each of the three different oviposition substrates during 1-h time intervals. n = 20 cages containing five females each. Mosquitoes could choose from different substrates placed in the same cage under a natural LD cycle (sunset at 18:00).
Table 1
The number of mosquitoes (Mean ± SE1) contributing to the total eggs laid in each mosquito/ substrate combination.
| Mosquito/ Substrate | Mean ± SE1 |
| Gravid/ Distilled water | 3.3 ± 0.4bc |
| Gravid/ Anopheline habitat water | 3.5 ± 0.4ab |
| Gravid/ Culicine habitat water | 2.5 ± 0.4c |
| Hypergravid/ Distilled water | 3.8 ± 0.4ab |
| Hypergravid/ Anopheline habitat water | 4.4 ± 0.3a |
| Hypergravid/ Culicine habitat water | 3.6 ± 0.4ab |
1SE: Standard Error. n = 12 cages each containing five mosquitoes. Any two means sharing a letter in common are not significantly different at 5% level (LSD test).
Figure 3
Daily oviposition patterns of wild-caught Anopheles gambiae s.l. on different oviposition substrates in a choice bioassay. Mean percentages (± SE) of the total eggs oviposited on each of the three different oviposition substrate during 1-h time intervals. n = 10 cages containing five females each. Mosquitoes could choose from different substrates placed in the same cage under a natural LD cycle (sunset at 18:00).
Figure 4
Daily oviposition patterns of Anopheles gambiae s.s. fed at different times. Mean number (± SE) of eggs oviposited during 1-h time intervals. n = 8 cages containing five females each. Mosquitoes were kept under a natural LD cycle (sunset at 18:00).