TABLE 2.

Results from ANOVAs and post hoc Tukey's HSD tests indicating the difference of trait means and significant level tests between Arctic charr morphs

	ANOVA		Tukey's HSD tests
	F 3,68	p	Abyssal–Dwarf	Abyssal–Piscivore	Abyssal–Planktivore	Dwarf–Piscivore	Dwarf–Planktivore	Piscivore–Planktivore
Genetic trait	2.56	.06	−0.08	0.27	−0.12	0.35	−0.05	−0.39
Habitat	135.50	.00***	3.00***	3.00***	2.09***	−8.88e−16	−0.91***	−0.91***
Sex	0.37	.78	0.05	0.13	−0.05	0.08	−0.09	−0.17
No. of lamellae	75.15	.00***	4.79***	7.08***	5.74***	2.30***	0.95	−1.34*
Olfactory organ area	10.88	.00***	0.52***	0.43***	0.39***	−0.09	−0.13	−0.04
Olfactory bulb	1.65	.19	0.29	0.23	0.18	−0.06	−0.12	−0.05
Telencephalon	4.51	.01**	0.28	0.29	−0.06	0.00	−0.34*	−0.34*
Optic tectum	11.96	.00***	0.66***	0.49**	0.76***	−0.18	0.10	0.28
Cerebellum	4.63	.01**	0.43*	0.26	0.48**	−0.16	0.06	0.22
Hypothalamus	4.59	.01**	0.48**	0.37*	0.39*	−0.11	−0.09	0.02
Eye area	59.66	.00***	1.43***	1.01***	0.93***	−0.42***	−0.50***	−0.09
Age	9.56	.00***	0.88	2.21*	−1.03	1.33	−1.91**	−3.24***
Head size	4.64	.01**	301.10	811.66**	596.38*	510.56	295.28	−215.28
Maturation	4.39	.01**	0.27	0.13	−0.23	−0.15	−0.50**	−0.35

We used the residuals of the measured variables obtained from the log‐log regressions to correct for size. Level of significance (p): *.01 < p ≤ .05; **.001 < p ≤ .01; ***p ≤ .001.