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. 2016 Jan 6;116(3):338–347. doi: 10.1038/hdy.2015.112

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.