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Table 6 Estimated variance components (±SE) for both direct effect and indirect effects using Model 5 1

From: Indirect genetic effects contribute substantially to heritable variation in aggression-related traits in group-housed mink (Neovison vison)

Parameter

Neck BMS

Body BMS5

Tail BMS

Total BMS

σ ^ A D 2

0.26 ± 0.11

0.37 ± 0.14

0.34 ± 0.13

2.95 ± 0.90

σ ^ A D , S

0.12 ± 0.04

0.27 ± 0.05

0.21 ± 0.04

1.97 ± 0.30

σ ^ A S 2

0.18 ± 0.04

0.27 ± 0.06

0.14 ± 0.04

1.6 ± 0.32

2 σ ^ A T 2

1.65 ± 0.25

2.56 ± 0.56

2.19 ± 0.30

19.13 ± 2.40

r ^ A DS

0.55 ± 0.22

0.67 ± 0.21

0.99 ± 0.23

0.90 ± 0.15

3 ρ ^ s

0.09 ± 0.05

-0.04 ± 0.04

-0.09 ± 0.03

-0.02 ± 0.04

σ ^ e m 2

1.40 ± 0.12

3.15 ± 0.21

2.80 ± 0.18

14.8 ± 1.01

σ ^ e f 2

3.07 ± 0.20

3.90 ± 0.25

6.10 ± 0.32

24.77 ± 1.54

4 σ ^ P 2

3.54 ± 0.11

4.95 ± 0.14

5.31 ± 0.16

31.09 ± 1.00

5 h ^ D 2

0.07 ± 0.10

0.07 ± 0.03

0.06 ± 0.02

0.10 ± 0.03

6 T ^ 2

0.47 ± 0.08

0.52 ± 0.21

0.41 ± 0.06

0.61 ± 0.08

  1. 1Model 5 was y = Xb + Z D a D  + Z S a S  + Vg * s + e; 2from Equation 2 using a pen size of 3.18; 3 ρ s = σ ^ g * s 2 σ ^ g * s 2 + 0.5 σ ^ e m 2 + σ ^ e f 2 is the non-genetic correlation between phenotypes of cage mates of the same sex; 4 for BMS, phenotypic variance was estimated from a separate analysis using the model y = Xb + e, this was done because our objective was to present a single number for phenotypic variance and heritability, covering both sexes since a single genetic variance was fitted covering both sexes; however, since our aim was to estimate the other model terms with the best fitting model, a separate analysis for phenotypic variance was performed; the standard errors of heritability estimates were calculated from the full model, averaging the residual variances for both sexes; 5although Model 4 was slightly better, we presented estimates obtained with Model 5 for reasons of consistency; 5 h ^ D 2 = σ A D 2 / σ P 2 . 6 T ^ 2 = σ A T 2 / σ P 2 .