Table 4. Statistical results of the generalized linear models with underlying gamma distributions for the two Petri dish bioassays.
| Cross-phylogeny Petri dish bioassay | ||
| Nested model | Model with only strain origin | |
| Resident | χ2 = 266.6, df = 14, p<0.0001 | χ2 = 1339.9, df = 18, p<0.0001 |
| Intruder | χ2 = 88.44, df = 14, p<0.0001 | χ2 = 631.67, df = 18, p<0.0001 |
| Ant genus of resident | χ2 = 40.83, df = 4, p<0.0001 | |
| Ant genus of intruder | χ2 = 14.86, df = 4, p = 0.0050 | |
| Size of resident | χ2 = 0.160, df = 1, p = 0.6892 | χ2 = 0.040, df = 1, p = 0.8396 |
| Relative genetic distance | χ2 = 7.08, df = 1, p = 0.0078 | |
| Resident*Intruder | χ2 = 2099.2, df = 324, p<0.0001 | |
| Ant genus of resident * Ant genus of intruder | χ2 = 84.67, df = 16, p<0.0001 | |
| Within- Acromyrmex Petri dish bioassay | ||
| Nested model | Model with only strain origin | |
| Resident | χ2 = 123.7, df = 7, p<0.0001 | χ2 = 943.5, df = 11, p<0.0001 |
| Intruder | χ2 = 248.8, df = 7, p<0.0001 | χ2 = 1003.1, df = 11, p<0.0001 |
| Ant species of resident | χ2 = 110.2, df = 4, p<0.0001 | |
| Ant species of intruder | χ2 = 37.8, df = 4, p<0.0001 | |
| Size of resident | χ2 = 6.85, df = 1, p = 0.0089 | χ2 = 0.51, df = 1, p = 0.4735 |
| Relative genetic distance | χ2 = 11.62, df = 1, p = 0.0007 | |
| Resident*Intruder | χ2 = 1307.6, df = 121, p<0.0001 | |
| Ant species of resident * Ant species of intruder | χ2 = 73.51, df = 16, p<0.0001 | |
The top section gives the results for the cross-phylogeny bioassay and the bottom section gives the results for the within-Acromyrmex bioassay. For both bioassays, a nested model and a model including only resident, intruder, and their interaction were built (see text for detail). Significance of terms in the models was determined through Likelihood Ratio Statistics for Type III ANOVAs, χ2-values, degrees of freedom (df), and p-values are given.