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

Table 1 First assay of sex-specific effects of inbreeding level on lifespan and ageing.

Source Statistic	DF/Variance	DFDen/Standard Error	F-ratio/Z-value	P-value
Lifespan
Inbreeding	2	49.1	0.66	0.5190
Sex	1	44.6	180.78	< 0.0001
Inbreeding × Sex	2	44.6	7.42	0.0017
Density	1	42.8	5.6	0.0225
Line	0.4232	0.2487	1.7	0.0444
Baseline mortality (ln α)
Inbreeding	2	49.6	0.05	0.9539
Sex	1	44.6	11.47	0.0015
Inbreeding × Sex	2	44.3	2.48	0.0953
Density	1	20.8	0.02	0.8939
Line	0.9632	0.9928	0.97	0.1660
Rate-of-senescence (β)
Inbreeding	2	46.7	0.92	0.4041
Sex	1	42.7	143.37	< 0.0001
Inbreeding × Sex	2	42.6	6.36	0.0038
Density	1	49.1	3.00	0.0894
Baseline mortality (ln α)	1	48.7	332.25	< 0.0001
Late-life deceleration (s)	1	47.2	15.17	0.0003
Line	0.007980	0.004285	1.86	0.0313
Late-life deceleration (s)
Inbreeding	2	46.5	2.75	0.0741
Sex	1	49.8	18.93	< 0.0001
Inbreeding × Sex	2	42.3	3.20	0.0506
Density	1	39.6	0.06	0.8141
Baseline mortality (lnα)	1	50.9	1.78	0.1877
Rate-of-senescence (β)	1	51	13.22	0.0006
Line	0.07719	0.04770	1.62	0.0528

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).

ISSN: 2730-7182