Table 1.
Comparison of alternative models of head shape evolution in notothenioids
| Model | Log likelihood | AICc | Delta AICc | AICc weight |
|---|---|---|---|---|
| OU-Diet3 | 26.1143 | -39.50132 | 0.00 | 0.693 |
| OU-Diet5 | 28.42475 | -37.24949 | 2.25 | 0.225 |
| OU-Single Peak | 21.0511 | -35.10237 | 4.40 | 0.077 |
| Brownian Motion | 16.98216 | -29.48433 | 10.02 | 0.005 |
| Early Burst | 16.98212 | -26.96424 | 12.54 | 0.001 |
Models are ordered from best to worst based on AICc scores. OU-Diet3: Ornstein-Uhlenbeck (OU) multi-peak model with species assigned to three categories according to feeding habitats (pelagic, intermediate and benthic); OU-Diet5: OU multi-peak model with species assigned to five categories according to feeding habitat and prey items (pelagic-large, pelagic-small, intermediate, benthic-soft, benthic-hard)