Table 3.

ANCOVAs examining effects of temporal niche on total brain mass as a proportion of body mass; olfactory bulb (OB) mass as a proportion of total brain mass; and volumes of the lateral geniculate nucleus (LGN), dorsal lateral geniculate nucleus (dLGN), ventral lateral geniculate nucleus (vLGN), superior colliculus (SC), medial geniculate nucleus (MGN), and inferior colliculus (IC) as proportions of total brain mass

	Regions	Factors	DF	Mean Sq	F value	Pr(>F)
	Brain	Temporal niche	1	0.0001	0.0125	0.914
		Body size	1	0.0118	14.261	0.005**
		Temporal niche*body	1	0.0003	0.4040	0.543
		Residuals	8	0.0008
Olfactory structure	OB	Temporal niche	1	0.0006	5.1631	0.049*
		Brain size	1	0.0191	154.66	<0.001***
		Temporal niche*brain	1	0.0005	4.1801	0.071
		Residuals	9	0.0001
Visual structures	LGN	Temporal niche	1	0.2294	40.269	<0.001***
		Brain size	1	4.6037	808.31	<0.001***
		Temporal niche*brain	1	0.0281	4.925	0.031*
		Residuals	55	0.0057
	dLGN	Temporal niche	1	0.2398	23.248	<0.001***
		Brain size	1	4.5876	444.67	<0.001***
		Temporal niche*brain	1	0.0159	1.545	0.2193
		Residuals	53	0.0103
	vLGN	Temporal niche	1	0.1610	38.332	<0.001***
		Brain size	1	2.8730	684.07	<0.001***
		Temporal niche*brain	1	0.0528	12.566	<0.001***
		Residuals	53	0.0042
	SC	Temporal niche	1	0.0043	6.8836	0.028*
		Brain size	1	0.0227	36.153	<0.001***
		Temporal niche*brain	1	0.0017	2.6839	0.136
		Residuals	9	0.0006
Auditory structures	MGN	Temporal niche	1	0.1824	10.391	0.002**
		Brain size	1	5.9126	336.91	<0.001***
		Temporal niche*brain	1	0.0007	0.0397	0.843
		Residuals	54	0.0175
	IC	Temporal niche	1	0.0284	2.782	0.102
		Brain size	1	3.6597	358.49	<0.001***
		Temporal niche*brain	1	0.1573	15.407	<0.001***
		Residuals	50	0.0102

*p < 0.05.

**p < 0.01.

***p < 0.001.