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Table 1 Results of SURFACE analysis of 48 toothed whale species cochlear shapes

From: Convergent evolution in toothed whale cochleae

  Multipeak OU OU1 BM
Model outputs Value Value Value
 AICc − 366 − 313 − 174
 Phenotypic regimes 5 1
 Phenotypic regime shifts 8 1
 Convergent phenotypic regimes 3
 Convergent phenotypic regime shifts 6
 Convergence fraction 0.75
Parameters PC1 PC2 PC1 PC2 PC1 PC2
 α 0.433 3.055 0.013 0.161
 t1/2 1.560 0.227 53.915 4.294
 σ2 0.001 0.005 0.000 0.001 0.000 0.000
 θa 0.064 0.055 −0.032 0.003
 θb 0.098 0.171
 θc −0.126 − 0.011
 θe −0.079 0.134
 θh 0.021 −0.015
  1. Models were fitted to the cochlear shape described by principal component (PC) 1 and PC2. Multipeak Ornstein Uhlenbeck (OU): convergent OU model fitted by backward phase of SURFACE; OU1: single peak OU model; BM: Brownian motion model