## Table 2 |
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Results for Mixed Effect models on Fitness components |
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Size at birth |
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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 |
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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 |
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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.*

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