Table 1.
Mortality of A. aegypti second instar larvae at 24 h after inoculation with individual Bti δ-endotoxins and the binary combinations Cyt2Ba/Cry10Aa, Cyt2Ba/Cry4Aa, Cyt2Ba/Cry4Ba and Cyt2Ba/Cry11Aa.
| Treatment 1 | Concentration (ng/mL) | Mortality (% ± SD) |
|---|---|---|
| Cry10Aa | 40 | 26 ± 5 |
| Cyt2Ba | 40 | 31 ± 8 |
| Cry10Aa+Cyt2Ba (1:1) | 80 | 93 ± 6 |
| Cry4Aa | 10 | 31 ± 10 |
| Cyt2Ba | 10 | 28 ± 23 |
| Cry4Aa+Cyt2Ba (1:1) | 20 | 100 ± 0 |
| Cry4Ba | 0.02 | 32 ± 18 |
| Cyt2Ba | 0.02 | 10 ± 9 |
| Cry4Ba+Cyt2Ba (1:1) | 0.04 | 43 ± 19 |
| Cry11Aa | 1.5 | 40 ± 16 |
| Cyt2Ba | 1.5 | 21 ± 14 |
| Cry11Aa+Cyt2Ba (1:1) | 3 | 46 ± 21 |
1 Control insects experienced no mortality in all cases.