Table 3. Protease activity in the midgut of fifth instar P. separata larvae after feeding with 40 mg litre−1 drug-coated maize leaves.
| Chemicals | Incubation time (h) | Weak alkaline trypsine-like enzyme | Chymotrypsin-like enzyme | Gross protease |
|---|---|---|---|---|
| ODP | 24 | 156.83±4.28b | 117.23±9.50b | 102.13±2.56b |
| 48 | 78.84±5.47c | 67.53±6.12c | 99.06±4.32b | |
| Toosendanin | 24 | 194.53±8.86a | 235.53±11.74a | 161.03±5.25a |
| 48 | 153.48±6.54b | 112.79±7.37bc | 106.94±3.89b |