Table 1.

Associations between ecological parameters and the number of chemoreceptor genes

(Sub)class	Response	Predictor	Dataset	N	λ	R2	P-value
Mammalia	OR	Habitat	BUSCO80	392	0.99	0.07	2e−5
			BUSCO90	343	0.99	0.09	1e−6
			Chromosome	126	0.99	0.14	8e−4
	TAAR	Habitat	BUSCO80	392	0.87	0.04	4e−3
			BUSCO90	343	0.85	0.05	7e−4
			Chromosome	126	0.9	0.13	2e−3
Aves	OR	Habitat	BUSCO80	467	0.19	0.04	2.5e−2
			BUSCO90	312	1e−6	0.18	4.4e−9
			Chromosome	83	0.13	0.12	0.15
	OR	Migratory behavior	BUSCO80	467	0.3	0.02	4.5e−3
			BUSCO90	312	0.4	0.05	5e−4
			Chromosome	83	0.31	0.05	0.14
	OR	Primary lifestyle	BUSCO80	467	0.31	0.04	2e−3
			BUSCO90	312	0.42	0.03	0.07
			Chromosome	83	0.23	0.17	6e−3
	T2R	Migratory behavior	BUSCO80	467	0.47	0.014	3.6e−2
			BUSCO90	312	0.67	0.05	5.6e−4
			Chromosome	83	1e−6	0.09	0.02
Actinopterygii	T1R	Aquatic habitat	BUSCO80	447	0.89	0.04	4.3e−3
			BUSCO90	343	0.88	0.05	8.5e−3
			Chromosome	210	0.7	0.05	0.0498

To test for associations between the number of genes in each chemoreceptor subfamily (response) and ecological parameters (predictor) in mammals, birds and ray-finned fishes, we ran a two-sided pGLS with caper. The complete list of ecological parameters tested and all pGLS results are reported in Supplementary Table 7, Supplementary Data 1 and Supplementary Fig. 46. “Chromosome” dataset corresponds to pGLS performed by considering only chromosome-scale assemblies. N corresponds to the number of species included in the pGLS analysis. pGLS results (λ, R² and P-value) are indicated. Source data are provided as a Source Data file.