Table 2.

Correlation between measures of social association and pairwise relatedness (Rel) or mtDNA haplotype sharing (Hap) across all individuals (n = 55). Pairwise values for mother–calf pairs were excluded. This relationship was also tested after restricting to members of the same social unit. Association values were calculated using ‘both identified’ as the association index.

association definition	sampling interval	predictor	all individuals		the same social unit
			matrix corr.	p-value	matrix corr.	p-value
day	year	Rel	0.200	<0.001	0.221	<0.001
		Hap	0.248	<0.001	—
2 h	10 day	Rel	0.217	<0.001	0.187	0.003
		Hap	0.251	<0.001	—
cluster	year	Rel	0.218	<0.001	0.130	0.035
		Hap	0.244	<0.001	—
cluster	6 h	Rel	0.206	<0.001	0.197	0.001
		Hap	0.175	<0.001	—