Table S2.

Linear models to quantify the effects of Oxtr and Avpr1a RRAM allele lengths on the expression (ln-transformed) of Avpr1a and Oxtr in five different brain regions of M. glareolus

Locus, brain region	Sex				Allele length				Allele length × sex
	Estimate	df	F	P	Estimate	df	F	P	Estimate	df	F	P
Oxtr
Olfactory bulbs	−2.580	1,26	0.775	0.387	0.010	1,26	9.006	0.006	0.010	1,26	0.945	0.340
Rostral forebrain	−2.267	1,26	0.599	0.446	0.003	1,26	1.681	0.206	0.008	1,26	0.569	0.457
Caudal forebrain	0.059	1,26	0.002	0.961	0.002	1,26	1.074	0.310	0.000	1,26	0.000	0.996
Midbrain	−4.737	1,26	5.326	0.029	−0.001	1,26	4.346	0.047	0.017	1,26	5.914	0.022
Hindbrain	−1.422	1,26	0.417	0.524	−0.006	1,26	1.095	0.305	0.005	1,26	0.412	0.527
Avpr1a
Olfactory bulbs	−7.949	1,26	1.099	0.304	−0.006	1,26	0.107	0.747	0.016	1,26	1.126	0.298
Rostral forebrain	−0.671	1,26	0.044	0.836	0.001	1,26	0.174	0.680	0.001	1,26	0.032	0.860
Caudal forebrain	−4.469	1,26	1.955	0.174	0.003	1,26	5.231	0.031	0.009	1,26	1.960	0.173
Midbrain	5.222	1,26	5.319	0.029	0.003	1,26	1.589	0.219	−0.011	1,26	5.632	0.025
Hindbrain	1.121	1,26	0.077	0.783	0.000	1,26	0.092	0.763	−0.002	1,26	0.053	0.620

The estimate, F-statistic (F), and degrees of freedom (df) from the models are reported for each main effect and interaction. Allele length × sex refers to the interaction between allele length and sex. Significant (P < 0.05) effects are highlighted in bold.