TABLE 5.

Variance components (mean of 100 replicates) estimated from the bivariate model for different genotyping scenarios for fish in B and C.

Parameter	Simulated values	B-Random C-Random	B-Top1_1 C-Random	B-T1_2B1_2 C-Random	B-Top1_1 C-T1_1B1_1	B-Top1_1 C-Top1_1
${\mathrm{\sigma }}_{g_B}^2$	1	0.966	0.199	7.093	0.194	0.203
${\mathrm{\sigma }}_{g_C}^2$	1	0.958	0.955	0.918	6.676	0.187
σgBgC	0.5	0.475	0.214	1.247	0.486	0.107
${\mathrm{\sigma }}_{e_B}^2$	2.333	2.361	1.067	4.913	1.066	1.066
${\mathrm{\sigma }}_{e_C}^2$	2.333	2.4	2.4	2.387	4.195	1.077
$h_B^2$	0.3	0.29	0.157	0.591	0.153	0.16
$h_C^2$	0.3	0.285	0.284	0.277	0.614	0.147

Genotyping: random (Random); selection of fish from one of the two top fish and one of the two bottom fish, where the top and bottom fish were the best and worst fish, respectively, from each sample of 20 fish (T1_2B1_2); selection of the phenotypically best fish from each sample of 20 fish (Top1_1); and selection of the phenotypically best and worst fish from each sample of 20 fish (T1_1B1_1). The direct genetic variance, residual variance, and heritability are ${\sigma }_{gB}^2$, ${\sigma }_{eB}^2$, and $h_B^2$, respectively, for the trait measured in B and ${\sigma }_{gC}^2$, ${\sigma }_{eC}^2$, and $h_C^2$, respectively, for the trait measured in C. The scenarios were simulated with r_g of 0.5, heritability of 0.3, 20% of genotyping allocated to fish in C, and 100% of selected females kept in 2 consecutive years. B, breeding environment; C, commercial environment.