Table I
Pathogenicity of S. marcescens and B. thuringiensis to S. exigua.
| Strain | LC50 (CFU/cm2) | 95% Fiducial limits |
|---|---|---|
| MPU Si1 | 4 × 106 | 2×106 – 4.3 × 107 |
| MPU Si2 | 4.2 × 106 | 2×106 – 1.1 × 108 |
| MPU Si3 | 5 × 106 | 2.1×106 – 3.8 × 108 |
| MPU Si4 | 2 × 106 | 5.6×105 – 7.6 × 106 |
| MPU Si5 | 4.5 × 106 | 9.2×105 – 2.3 × 107 |
| MPU Si6 | 5.6 × 106 | 9.2×105 – 3.3 × 107 |
| MPU Si7 | 7.6 × 105 | 2×105 – 2.8 × 106 |
| MPU Si8 | 2.5 × 106 | 1.3×106 – 2.4 × 107 |
| B. thuringiensis | 1.7×107 | 3.6×106 – 3 × 107 |
Table II
Cytotoxic activity of S. marcescens strains isolated from insects.
| Strain | Cytotoxic index (%) |
|---|---|
| MPU Si1 | 79.2 ± 4.1* |
| MPU Si2 | 77.6 ± 2.8 |
| MPU Si3 | 77.5 ± 3.1 |
| MPU Si4 | 58.5 ± 2.5 |
| MPU Si5 | 76.6 ± 1.9 |
| MPU Si6 | 78.3 ± 3.7 |
| MPU Si7 | 59.7 ± 2.1 |
| MPU Si8 | 54.9 ± 3.8 |
Table III
Antibiotic resistance of S. marcescens strains isolated from insects.
| Isolate | Antimicrobial resistance profile |
|---|---|
| MPU Si1 | SUL* |
| MPU Si2 | SUL |
| MPU Si3 | SUL |
| MPU Si4 | SUL |
| MPU Si5 | TOB, FEP, SUL |
| MPU Si6 | SUL |
| MPU Si7 | GEN, TOB, SUL |
| MPU Si8 | SUL |