TABLE 2.

Results of analyses of variance (ANOVA) comparing the number of differentially expressed genes among habitat types (sulphidic surface, nonsulphidic cave, sulphidic cave), organs (gills, liver, brain) and expression direction (up vs. downregulated)

Term	df	F	p	${\mathrm{\eta }}_{\mathrm{p}}^2$
Habitat type	2	4.3	.101	.682
Organ	2	19.5	.009	.907
Expression direction	1	0.1	.724	.035
Habitat × Expression direction	2	0.8	.501	.292
Organ × Expression direction	2	1.6	.313	.441
Habitat × Organ	4	18.0	.008	.947

The number of differentially expressed genes varied among organs, but in a habitat-specific manner (see Figure 3). Effect sizes were estimated with partial eta-squared ( ${\mathrm{\eta }}_{\mathrm{p}}^2$), and significant effects (p < .05) are high-lighted in bold font.