Table 2.
Toxicity of the Cyt1Aa-BinA chimeric strain of Bacillus thuringiensis subsp. israelensis 4Q7/Cyt1Aa-BinA or Lysinibacillus sphaericus (Ls) wild type strain to 4th-instars of Culex quinquefasciatus at 24 versus 48 hours post treatment.
| Bacterial Strain | LC50 (Fiducial Limits)a | LC95 (Fiducial Limits)a | Slope |
|---|---|---|---|
| 24 hours | |||
| Ls 2362 (BinAB) | 218.7 (158.5–308.0) | 2,548.5 (1,396.8–6,667.3) | 1.5 ± 0.2 |
| Bti 4Q7/ cyt1Aa-binA (Cyt1Aa-BinA chimera) | 6.5 (3.3–13.0) | 38.5 (11.0–174.6) | 2.1 ± 0.5 |
| 48 hours | |||
| Ls 2362 (BinAB) | 19.5 (14.7–25.9) | 90.5 (61.5–160.3) | 2.5 ± 0.3 |
| Bti 4Q7/ cyt1Aa-binA (Cyt1Aa-BinA chimera) | 5.8 (2.7–12.5) | 31.0 (7.6–151.8) | 2.3 ± 0.6 |
ang/ml.