Table 2. The indirect effects of male age, mitochondrial and nuclear genetic variation upon reference female fecundity, egg size and fertility.
| Response variable |
Fecundity, n=621 |
Egg size, n=7971 |
Fertility, n=954 |
||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Coef | s.e. | χ2 | d.f. | P | Coef | s.e. | χ2 | d.f. | P | Coef | s.e. | χ2 | d.f. | P | |
| Fixed effects | |||||||||||||||
| Male age | 82.3 | 3 | <0.0001 | 11.8 | 2 | 0.0027 | 3.2 | 5 | 0.6737 | ||||||
| Female weight | 0.03 | 0.02 | 2.2 | 1 | 0.1377 | 3.21 | 0.75 | 18.3 | 1 | <0.0001 | 0.03 | 0.03 | 1.3 | 1 | 0.2525 |
| Ejaculate weight | 0.62 | 0.17 | 13.7 | 1 | <0.0001 | −1.50 | 1.24 | 1.4 | 1 | 0.2320 | — | — | — | — | — |
| Mitochondrial lineage | 3.2 | 2 | 0.2062 | 1.9 | 2 | 0.3866 | 0.3 | 2 | 0.8623 | ||||||
| Nuclear lineage | 0.3 | 2 | 0.8524 | 5.2 | 2 | 0.0750 | 5.9 | 2 | 0.0531 | ||||||
| Mito × Nuc | 4.3 | 4 | 0.3661 | 3.0 | 4 | 0.5568 | 5.8 | 4 | 0.2152 | ||||||
| Age × Mito | 27.2 | 6 | <0.0001 | 17.5 | 4 | 0.0015 | 8.3 | 10 | 0.6031 | ||||||
| Age × Nuc | 39.2 | 6 | <0.0001 | 15.9 | 4 | 0.0031 | 22.0 | 10 | 0.0150 | ||||||
| Age × Mito × Nuc | 15.4 | 12 | 0.2183 | 19.6 | 8 | 0.0117 | 31.2 | 20 | 0.0527 | ||||||
| Random effects |
Variance (σ2) |
Variance (σ2) |
Variance (σ2) |
||||||||||||
| Line | 0.00 | 1.51 × 10–12 | 0.00 | ||||||||||||
| Male ID | 74.61 | 2.4 | 0.04 | ||||||||||||
| Female ID | — | 21.2 | — | ||||||||||||
Abbreviations: Coef, coefficient; d.f., degrees of freedom; Mito, mitochondrial lineage; Nuc, nuclear lineage. P< 0.05 highlighted in bold.