Table 1. Statistical analysis of glucose oxidase (GOX) activity of caterpillars reared on plant vs artificial diet. Whole body GOX activities were compared by Student's t-test; labial salivary gland GOX activities were analyzed 1-way ANOVA followed by a Tukey post-hoc test. Significant differences are shown in Fig 1.
| Instar | Whole body GOX activity | Labial salivary gland GOX activity | |
| (U/caterpillar) | (U/pair labial salivary gland) | (U/mg per pair labial salivary gland) | |
| Second | not significant | ||
| (df = 15, F = 7.298, p = 0.1876) | |||
| Third | significant difference | significant difference | not significant |
| (df = 12, F = 31.185, p <0.0001) | (df = 20, p = 0.0025) | (df = 20, p = 0.2097) | |
| Fourth | significant difference | significant difference | significant difference |
| (df = 18, F = 49.696, p = 0.0003) | (df = 17, p < 0.0001) | (df = 19, p = 0.0062) | |
| Fifth | significant difference | not significant | significant difference |
| (df = 18, F = 234.66, p = 0.0041) | (df = 21, p = 0.2560) | (df = 21, p = 0.0478) | |