Table 3.
Relationship between priming and larval size
| χ2 | DF | p | |
|---|---|---|---|
| A | |||
| Overall model – survival | 44.3514 | 19 | 0.0008 |
| Treatment | 27.9444 | 4 | <0.0001 |
| Size class | 1.2688 | 1 | 0.2600 |
| Plate, treatment | 11.5185 | 10 | 0.3186 |
| Treatment*size class Contrasts |
3.3722 | 4 | 0.4976 |
| Medium vs. naïve (PBS) | 1.8233 | 0.1769 | |
| Medium vs.Btt SN | 26.7661 | <0.0001 | |
| Medium vs.Btk SN | 2.5733 | 0.1087 | |
| Medium vs.Bt 407cry− | 3.8637 | 0.0493 | |
| B | |||
| Overall model – growth | 311.1827 | 19 | <0.0001 |
| Treatment | 264.9723 | 4 | <0.0001 |
| Size class | 7.0428 | 1 | 0.0080 |
| Plate, treatment | 49.0640 | 10 | <0.0001 |
| Treatment*size class Contrasts |
8.6540 | 4 | 0.0704 |
| Medium vs. naïve (PBS) | 174.9389 | <0.0001 | |
| Medium vs.Btt SN | 68.4564 | <0.0001 | |
| Medium vs.Btk SN | 4.4715 | 0.0345 | |
| Medium vs.Bt 407cry− | 0.4229 | 0.5155 | |
| C | |||
| Overall model – survival | 35.0160 | 9 | <0.0001 |
| Treatment | 24.3653 | 4 | <0.0001 |
| Size prechallenge | 1.1885 | 1 | 0.2756 |
| Treatment*size prechallenge Contrasts |
5.5757 | 4 | 0.2332 |
| Medium vs. naive (PBS) | 1.4213 | 0.2331 | |
| Medium vs.Btt SN | 22.7727 | <0.0001 | |
| Medium vs.Btk SN | 1.8990 | 0.1681 | |
| Medium vs.Bt 407cry− | 1.9463 | 0.1629 | |
A
GLM testing for the effect of priming treatment and size class on survival; experimental plate (nested within treatment) was also included into the model.
B
GLM testing for the effect of priming treatment and size class on growth; experimental plate (nested within treatment) was also included into the model.
C
GLM testing for the effect of priming treatment and size before challenge on survival.