Table 2.

Cross-environment genetic correlations. Genetic correlations (r_A±s.e.) across the control versus predator-exposed environments are given with their geometric mean heritability (Avg. h²; not given when Avg. h² <0.15) for various personality traits and morphological traits and for two populations.

	predator-naive population						predator-sympatric population
			test of rA =0		test of rA =1				test of rA=0		test of rA=1
trait	Avg. h2	rA±s.e.	Χ12	p-value	Χ12	p-value	Avg. h2	rA±s.e.	Χ12	p-value	Χ12	p-value
personality traitsaxis label
exploration novel environmentA1	0.27	0.65±0.27	4.238	0.04	2.626	0.105	0.15	0.84±0.45	2.74	0.098	0.154	0.695
activity 2 hours after releaseB1	0.06	—	—	—	—	—	0.27	0.78±0.28	4.312	0.038	0.78	0.377
activity 4 hours after releaseC1	0.06	—	—	—	—	—	0.27	1.17±0.09	18.722	<0.001	2.146	0.143
sociability−D1	0.11	—	—	—	—	—	0.29	0.74±0.33	3.28	0.07	0.77	0.38
exploration of novel conspecificD2	0.08	—	—	—	—	—	0.27	0.83±0.31	4.166	0.041	0.348	0.555
boldness towards predators−E1	0.22	0.87±0.34	5.466	0.019	0.202	0.653	0.32	1.13±0.11	16.092	<0.001	1.21	0.271
morphological traits
body length	0.67	0.67±0.14	12.982	<0.001	2.968	0.085	0.94	0.38±0.21	2.674	0.102	38.656	<0.001
body shape	0.92	0.64±0.13	13.61	<0.001	27.278	<0.001	0.82	0.83±0.11	15.13	<0.001	7.564	0.006
relative spine length	0.34	0.81±0.21	8.068	0.005	0.992	0.319	0.39	0.81±0.20	7.392	0.007	1.454	0.228