|  | Maximum Likelihood Analyses | ||||||
---|---|---|---|---|---|---|---|---|
Model | Path constrained to zero | χ2 | df | P | AIC | Δ i | w i | Evidence Ratio |
1 | Head length → Fitness | 5.38 | 7 | 0.61 | 61.38 | 0 | 0.28 |  |
2 | Max. swim speed → Fitness | 1.98 | 5 | 0.85 | 61.98 | 0.60 | 0.21 | 1.35 |
3 | Head ht. → Fitness | 4.28 | 6 | 0.64 | 62.28 | 0.89 | 0.18 | 1.56 |
4 | Tail muscle ht. → Max. swim speed | 8.39 | 8 | 0.40 | 62.39 | 1.00 | 0.17 | 1.65 |
5 | Tail fin ht. → Max. swim speed | 1.58 | 4 | 0.81 | 63.58 | 2.19 | 0.09 | 3.00 |
6 | Tail length → Max. swim speed | 1.20 | 3 | 0.75 | 65.20 | 3.81 | 0.04 | 6.73 |
7 | Tail muscle ht. → Fitness | 0.89 | 2 | 0.64 | 66.89 | 5.51 | 0.02 | 15.70 |
8 | Head ht. → Max. swim speed | 0.36 | 1 | 0.55 | 68.36 | 6.98 | 0.01 | 32.77 |
9 | Saturated model | -- | 0 | -- | 70.00 | 8.62 | 0.00 | 74.33 |