Table 1.
Median Lethal Time (LT50)1 ± Standard Error (SE) in days computed for samples of forty 6-8 day old females of A. aegypti after exposure for 48 hours to a filter paper impregnated with 6 × 108 conidia ml -1 of each one of eight isolates of B. bassiana collected from various localities in Mexico
| Isolate1 | LT50 ± SE | Host/Source | Locality and State |
|---|---|---|---|
| Bb-CBG1 | 5.03 ± 0.69 | Soil | Texcoco, México. |
| Bb-CBG2 | 2.70 ± 0.29* | Coleoptera (Aphodius sp.) | Zuazua, Nuevo León |
| Bb-CBG3 | 3.20 ± 0.42 | Soil | Marín, Nuevo León |
| Bb-CBG4 | 5.33 ± 0.53* | Soil | Metztitlan, Hidalgo |
| Bb-CBG5 | 4.06 ± 0.46 | Soil | Marín, Nuevo León |
| Bb-CBG6 | 3.30 ± 0.47 | Soil | Cuernavaca, Morelos |
| Bb-CBG7 | 3.46 ± 0.47 | Soil | La Ceiba, Puebla |
| Bb-CBG8 | 3.60 ± 0.51 | Soil | Chapingo, México. |
| Control | 14.26 ± 0.43 |
1 Significance within the same column, χ2 = 194.85, df = 8, p < 0.0001.
*Isolates with the highest and lowest virulence.