TABLE 3.
Estimated variance components and derived parameters for the six models of performance in the detour task trials.
| Parameter | Model | |||||
|---|---|---|---|---|---|---|
| A1 null model | A2 phenotypic model | A3 IxE model | A4 animal model | A5 full GxE model | A6 animal model with PxE | |
| V B | 0.018 (0.013) | 0.016 (0.014) | 0.015 (0.013) | 0.016 (0.014) | 0.013 (0.01) | 0.015 (0.013) |
| V BT | 0.013 (0.012) | 0.000 (−) | 0.000 (−) | 0.000 (−) | 0.000 (−) | 0.000 (−) |
| V R | 0.730 (0.032) | 0.392 (0.021) | 0.392 (0.021) | 0.392 (0.021) | 0.392 (0.021) | 0.392 (0.021) |
| V I | – | 0.357 (0.038) |
0.372 (0.056)1 0.343 (0.052)2 |
– | – | – |
| V A | – | – | – | 0.000 (−) |
0.253 (0.140)1 0.000 (−)2 |
0.000 (−) |
| V PE | – | – | – | 0.357 (0.038) |
0.174 (0.092)1 0.336 (0.051)2 |
0.371 (0.056)1 0.343 (0.051)2 |
| r G | – | – | – | – | −0.999 (−) | – |
| R | – | 0.467 (0.033) |
0.477 (0.043)1 0.458 (0.042)2 |
– | – | – |
| h 2 | – | – | – | 0.000 (−) |
0.304 (0.146)1 0.000 (−)2 |
0.000 (−) |
| pe2 | – | – | – | 0.467 (0.033) |
0.209 (0.119)1 0.454 (0.042)2 |
0.477 (0.043)1 0.458 (0.042)2 |
Note: Subscripts denote block (B), brood tank (BT), residual (R), individual (I), permanent environment (PE) and additive genetic (A) components of variance. Also shown, where applicable are corresponding estimates of repeatability (R), heritability (h 2), the intraclass correlation corresponding to V PE (denoted pe2) and the cross‐treatment genetic correlation (r G). Parameter estimates specific to treatment 1 (clear cylinder) and 2 (marked cylinder) are denoted with subscripts and associated standard errors from each model are provided in parentheses where available. Note that variances were constrained to be positive and correlations between −1 and +1. Where parameters are fixed at boundary conditions no SE is estimated.