Table 1.
Models considered plausible (Akaike weight > 0.05) for predicting the effect of host traits in Platycercus elegans on (a) beak and feather disease virus infection status, and (b) viral load; n = 224, tests of viral load (i.e. relative viral gene expression) were based on the subset of individuals that were infected with BFDV (n = 106). Addition sign represents delta AICc compared to top model.
| Ranked models | AICc | w | Cumulative w | Model likelihood | Evidence ratio |
|---|---|---|---|---|---|
| (a) BFDV infection status | |||||
| HL + subspecies + age | 222.54 | 0.38 | 0.38 | 1 | — |
| HL + subspecies + age + sex | +0.59 | 0.29 | 0.67 | 0.74 | 1.34 |
| Subspecies + age + sex | +2.22 | 0.13 | 0.80 | 0.33 | 3.03 |
| Subspecies + age | +2.51 | 0.11 | 0.91 | 0.28 | 3.51 |
| (b) BFDV viral load | |||||
| APR + subspecies + age + sex | 414.97 | 0.53 | 0.53 | 1.00 | — |
| Subspecies + age + sex | +1.56 | 0.25 | 0.78 | 0.46 | 2.18 |
| HL + subspecies + age + sex | +3.80 | 0.08 | 0.86 | 0.15 | 6.67 |
| APR + subspecies + age | +4.32 | 0.06 | 0.92 | 0.12 | 8.66 |
APR = average pairwise relatedness, HL = homozygosity-by-loci, AICc = Akaike Information Criterion (corrected for small sample size), w = Akaike model weight. Model likelihood is the relative likelihood of each model compared to the top ranked model; evidence ratio is how much less likely each model is than the top ranked model. Bold indicates models containing genetic diversity variables.