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Table 3 Second assay of sex-specific effects of inbreeding level on lifespan and ageing.

From: Sex differences in the genetic architecture of lifespan in a seed beetle: extreme inbreeding extends male lifespan

Source Statistic DF/Variance DFDen/Standard Error F-ratio/Z-value P-value
Lifespan     
Inbreeding 1 39 0.03 0.8537
Sex 1 29.8 5.33 0.0281
Inbreeding × Sex 1 29.7 8.84 0.0058
Density 1 29.5 0.00 0.9568
Line 0.2187 0.2770 0.79 0.2149
Mortality rates, females     
Baseline mortality (ln α)     
Inbreeding 1 14.7 4.87 0.0436
Density 1 18.8 1.98 0.1754
Line 0.4913 0.7436 0.66 0.2544
Rate-of-senescence (β)     
Inbreeding 1 16 0.64 0.4353
Density 1 16 0.11 0.7432
Baseline mortality (ln α) 1 14.5 15.44 0.0014
Late-life deceleration (s) 1 16.8 37.73 < 0.0001
Line 0.02133 0.01651 1.29 0.0982
Late-life deceleration (s)     
Inbreeding 1 10.9 9.33 0.0111
Density 1 11.3 1.57 0.2359
Baseline mortality (ln α) 1 11.1 8.15 0.0156
Rate-of-senescence (β) 1 11.6 45.45 < 0.0001
Line 0.4392 0.2349 1.87 0.0307
Mortality rates, males     
Baseline mortality (ln α)     
Inbreeding 1 16.8 2.51 0.1317
Density 1 17 0.18 0.6798
Line 0.2118 0.4854 0.44 0.3313
Rate-of-senescence (β)     
Inbreeding 1 16.5 0.04 0.8474
Density 1 17.6 0.51 0.4854
Baseline mortality (ln α) 1 17.3 30.98 < 0.0001
Line 0.002670 0.002788 0.96 0.1691
  1. Data was analysed with a General Linear Mixed Model with a REML estimation procedure. Degrees of freedom (DF & DFDen), F-ratios and P-values are provided for fixed effects (Inbreeding, Sex, Inbreeding × Sex and Density); variance components, standard errors, Z-values and P-values are provided for the random factor (maternal line). The analysis of mortality rates is presented separately for males (Gompertz model) and females (Logistic model) (see text for details).