Table 4. Results of the selection strategy of the best random regression animal model for courtship display rate.
LogL, the Log Likelihood of the model, LRT the likelihood ratio test, d.f., the degree of freedom defined as the number of random term(s) (variance(s) and covariance(s)) added for fitting each model in comparison of previous model. Note that f(indiv, 3, ageST) did not converge A plot of the best model can be found in Fig 2 (using MCMCglmm estimates) and in S3 Text (using ASReml estimates).
| Models no. | Random regression model | LogL | LRT | d.f. | P-value |
|---|---|---|---|---|---|
| 1 | f(id, 0, ageST) | -5653.74 | |||
| 2 | f(id, 1, ageST) | -4979.09 | 255.04 | 2 | <0.001 |
| 3 | f(id, 2, ageST) | -4889.55 | 179.08 | 3 | <0.001 |
| 4 | f(a, 0, ageST) + f(pe, 2, ageST) | -4819.06 | 140.98 | 1 | <0.001 |
| 5 | f(a, 1, ageST) + f(pe, 2, ageST) | -4812.58 | 12.96 | 2 | 0.002 |
| 6 | f(a, 2, age ST ) + f(pe, 2, age ST ) | -4803.96 | 17.24 | 3 | <0.001 |