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Poisson regression model testing for the effect of wax (presence vs. absence), digestive liquid (presence vs. absence) and insect identity (ant O. smaragdina vs. fly D. melanogaster) on the retention of insects by lower pitchers of N. rafflesiana var. typica
| Dependent variable: number of insect escapes | |||
|---|---|---|---|
| Covariate | d.f. | χ2 | P |
| Wax | 1 | 1·72 | 0·19 |
| Liquid | 1 | 46·18 | <0·0001 |
| Insect | 1 | 0·24 | 0·6224 |
| Liquid × insect | 1 | 22·85 | <0·0001 |
