Comparisons between rates of dual character state change in morphology and habitat.

Comparisons between rates of dual character state change in morphology and habitat. q12 is the rate coefficient for character change where morphology changes while habitat preference remains unchanged ([0,0]-> [0,1]), and q13 is the rate of the change where morphology remains unchanged while habitat changes ([0,0]-> [1,0]). Difference in rates was tested by running an MCMC chain applying the model of dependent evolution for morphological and habitat character state change (D; 8 parameters) and with the restricted model where q12 and q13 were forced to be the same (R; 7 parameters). Bayes Factors (BF) served to estimate whether the difference in likelihoods for R and D models was statistically significant. Both for R and D models, MCMC runs were repeated three times; means for D runs (mean lnL D) and for R runs (mean lnL R) are in the table. BF was calculated based on the best run, i.e. the one yielding the highest likelihood (max lnL D and max lnL R). BF >5 were regarded as strong support. Rate coefficients were also sampled during MCMC chains with a D model and used for testing the difference between q12 and q13. Means and standard deviations for the rate parameters (columns q12 and q13) from the run yielding the best likelihood are given and significance of differences between the rates is tested.