Table 2
Results for Mixed Effect models on Fitness components
Size at birth
F1 Estimate Std. error DF P
Fixed effect
Intercept −0.160 0.008 191 <0.001
Random effects Std. Dev.
Tank (Intercept) 0.068
Residual 0.044
F2 Estimate Std. error DF P
Fixed effect
Intercept 0.859 0.006 262 <0.001
Random effects Std. Dev.
Tank (Intercept) 0.020
Residual 0.057
Growth rate
F1 Estimate Std. error DF P
Fixed effect
Intercept −2.192 0.024 190 <0.001
Random effects Std. Dev.
Tank (Intercept) 0.184
Residual 0.162
F2 Estimate Std. error DF P
Fixed effect
Intercept −2.120 0.041 274 <0.001
Random effects Std. Dev.
Tank (Intercept) 0.204
Residual 0.190
Time to sexual maturation
F1
Fixed effect Estimate Std. error DF P
Intercept 3.825 0.034 84 <0.001
Random effects Std. Dev.
Tank (Intercept) 0.253
Residual 0.130
F2
Fixed effect Estimate Std. error DF P
Intercept 3.720 0.027 242 <0.001
Random effects Std. Dev.
Tank (Intercept) 0.174
Residual 0.201

Effect of mating treatment on size at birth, growth rate and time to sexual maturation in F1s and F2s using linear mixed-effects models. Tank of origin was used as a random effect nested within mating treatment. Parameters are only shown for best-fitted model. Selection of best-fitted model and Akaike weights are shown in Additional file 2: Supporting Information 2.

Barbosa et al. BMC Evolutionary Biology 2012 12:185   doi:10.1186/1471-2148-12-185

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