Table 2.
Number of female Anopheles gambiae s.l. collected nightly from each treatment of the five experimental hut trials, the proportion that showed fungal growth after death (Sporulation %) and the average time to death (g) derived from the Weibull models in days (see Additional file 1)
| Avg. time to death (g) | ||||||||
|---|---|---|---|---|---|---|---|---|
| Trial | Design | Treatment | Dosage (conidia/m2) | Average catch per night | Sporulation (%) | All | Uninfected | Infected |
| 1 | Eave netting | Bb I93-825 | 2*1010 | 1.1 ± 0.35 | 0.0 | nd | ||
| Oil control | 1.0 ± 0.24 | 0.0 | nd | |||||
| Open eaves (control) | 45.0 ± 7.8 | 0.0 | nd | |||||
| 2 | Eave curtain | Ma ICIPE-30 | 2*1010 | 36.4 ± 6.0 | 0.0 | 15.6 | ||
| Bb I93-825 | 2*1010 | 32.4 ± 4.4 | 0.0 | 17.2 | ||||
| Oil control | 38.4 ± 4.1 | 0.0 | 18.4 | |||||
| 3 | Eave curtain | Bb I93-825 on curtain | 8*1010 | 27.9 ± 1.7 | 18.3 | 18.5 | ||
| & panels | Bb I93-825 on panels | 8*1010 | 30.2 ± 1.3 | 10.7 | 17.3 | |||
| Open eaves (control) | 33.9 ± 1.2 | 0.0 | 20.6 | |||||
| 4 | Eave baffles | Ma IP 46 | 4.1*1010 | 40.6 ± 8 | 69.1 | 20.7 | 11.5 | |
| Bb I93-825 | 4.1*1010 | 56.3 ± 11.4 | 67.9 | 17.9 | 10.5 | |||
| Oil control | 74.2 ± 14.5 | 2.0 | 20.3 | |||||
| 5 | Bed net strips | Ma IP 46 - long | 5*1010 | 24.3 ± 3.2 | 75.5 | 24.5 | 10.5 | |
| Ma IP 46 - short | 5*1010 | 38.4 ± 6.8 | 74.6 | 23.0 | 11.8 | |||
| Open eaves (control) | 86.2 ± 12.7 | 3.3 | 19.2 | |||||
As sporulation rates in the trials 2 and 3 were zero or very low, we only calculated separate 'average time to death' for fungus-infected individuals (those that sporulated) and fungus-uninfected individuals (those that did not sporulate) of trials 4 and 5. In trial 1, the number of mosquitoes collected in exit traps of treatment huts was too low to calculate 'average time to death' ('nd' in Table). Ma: Metarhizium anisopliae; Bb: Beauveria bassiana