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Susceptibility of 5th instar larvae of S. littoralis to S. aureus.
| Concentration (CFU/ml) | Dead/ total | Observed mortality (%) | Expected mortality (%) |
|---|---|---|---|
| 1 × 103 | 1.5 / 20 | 7.50 | 7.76 |
| 1 × 104 | 4.5 / 20 | 22.50 | 19.23 |
| 1 × 105 | 7.0 / 20 | 35.00 | 37.56 |
| 1 × 106 | 10.5 / 20 | 52.50 | 59.30 |
| 1 × 107 | 15.6 / 20 | 78.00 | 78.46 |
| 1 × 108 | 17.6 / 20 | 88.00 | 91.00 |
| Control | 0 / 20 | – | – |
| Chi2 | 0.383 | ||
| Slope | 0.5136 ± 0.0854 | ||
| LC50 | 4.8 × 105 cells/ml | ||
| LC20 | 1.1 × 104 cells/ml | ||
