Table 3.
Results of nested General Linear Models (GLM) and PERMANOVAs exploring the effects of nest type (hole vs. non-hole) and species identity (nested withing nest type) on the antimicrobial activity (average values of the width of antagonistic halos when tested against each of the nine indicator bacteria), antimicrobial range (Shannon index of the antimicrobial activity), bacterial density and the antimicrobial profile in separated models for each of the dependent variable, and for adults and nestlings.
| Adults | Nestlings | |||||
|---|---|---|---|---|---|---|
| F* | df | p | F* | df | p | |
| Antimicrobial activity | ||||||
| Nest type | 8.02 | 1,97 | 0.006 | 0.26 | 1,104 | 0.609 |
| Species (Nest type) | 2.45 | 11,97 | 0.010 | 4.34 | 12,104 | <0.001 |
| Antimicrobial range | ||||||
| Nest type | 36.74 | 1,97 | <0.001 | 6.69 | 1,104 | 0.011 |
| Species (Nest type) | 4.32 | 11,97 | <0.001 | 6.47 | 12,104 | <0.001 |
| Total bacterial density | ||||||
| Nest type | 23.14 | 1,93 | <0.001 | 33.98 | 1,104 | <0.001 |
| Species (Nest type) | 1.51 | 11,93 | 0.142 | 5.21 | 12,104 | <0.001 |
| Antimicrobial profile | ||||||
| Nest type | 8.54 | 1,97 | <0.001 | 5.74 | 1,104 | <0.001 |
| Species (Nest type) | 2.18 | 11,97 | <0.001 | 1.7 | 12,104 | <0.001 |
*F statistic is Pseudo-F in PERMANOVA analysis for antimicrobial profile. Values in bold are statistically significant.