Table 2.
Adaptive regimes for femur and forelimb evolution in (i) Paraves with the rest of the tree and (ii) Aves with the rest of the tree
| Model | AICc | AICc wt | α 1 | α 2 | σ 1 | σ 2 | θ 1 | θ 2 | |
|---|---|---|---|---|---|---|---|---|---|
| Paraves femur | *OUMVA | −16.154 | 0.494 | 9.0 × 10−16 | 0.019 | 0.201 | 0.003 | 2.17 (0.08) | 1.76 (0.08) |
| Aves femur | *OUMV | −10.068 | 0.529 | 0.021 | - | 0.004 | 0.002 | 2.04 (0.07) | 1.64 (0.11) |
| Paraves forelimb | *OUMA | −10.875 | 0.497 | 9 × 10−14 | 0.024 | 0.002 | - | 2.37 (0.1) | 2.20 (0.08) |
| Aves forelimb | *BMS | −8.398 | 0.272 | - | - | 0.003 | 0.001 | 2.26 (0.08) | - |
Adaptive regimes are parameterized by the strength of pull (α) toward the state optima (θ), and the evolutionary rate (σ). The OUMVA models allow all parameters to differ, whereas all except α in the OUMV and σ in the OUMA can vary. The BM model (BMS) allows only σ to vary and does not estimate α.
AIC, Akaike information criterion.