Table 2.

Analysis of offspring adult body size, based on a reduced data set including only those offspring that showed a genetic match to the second male (full model including all non-significant interactions is shown in Table S4e)

	Estimate	SE	d.f.	F	P
Treatment	0.288	0.125	1	5.307	0.027
Offspring sex	−0.028	0.039	1	0.521	0.472
Maternal size	0.333	0.126	1	6.970	0.012
Family (random effect) = 0.718 ± 0.178

‘Treatment’ denotes the condition of the first and second male (high-low vs. low-high). Effects were estimated in a linear mixed model, with family included as a random effect. Significant effects are highlighted in bold.