Table 2.
Posterior estimation (with 95% Bayesian credible interval, BCrI) of variance components for baseline and stress-induced corticosterone levels based on best models (see Table 1) without or with covariates
| Baseline corticosterone (95% BCrI) | Stress-induced corticosterone (95% BCrI) | |
|---|---|---|
| Model 1 without covariates | ||
| Additive genetic variance (VA) | 0.23 (0.16–0.31) | 9.26 (5.84–13.73) |
| Year (VY) | 0.19 (0.06–0.60) | 2.54 (0.69–13.54) |
| Rearing environment (VE) | 0.08 (0.06–0.13) | 2.67 (0.79–4.34) |
| Residual variance (VR) | 0.27 (0.22–0.32) | 12.47 (9.88–14.74) |
| Total variance (VP) | 0.81 (0.64–1.21) | 28.12 (23.69–38.37) |
| Model 1 including covariates | ||
| Additive genetic variance (VA) | 0.15 (0.10–0.22) | 6.89 (3.93–10.65) |
| Year (VY) | 0.18 (0.07–0.65) | 6.08 (2.00–24.57) |
| Rearing environment (VE) | 0.09 (0.06–0.13) | 1.03 (0.14–2.49) |
| Residual variance (VR) | 0.26 (0.21–0.30) | 10.47 (8.62–12.75) |
| Total variance (VP) | 0.68 (0.57–1.17) | 26.01 (20.09–43.19) |
Note: Baseline and stress-induced corticosterone estimates are based on a logarithmic and a power of 0.7 transformation of corticosterone levels, respectively