Figure 3: Proportion of time (mean percentage ± SE) spent in light (open bars) vs. dark (solid bars) environments by unpigmented and heavily pigmented larval newts subjected to light and dark microhabitat conditions respectively, after five weeks of experiment.

Preferences of the same individual larva are tested in the absence and the presence of predator cues. Upper panels: larvae no previously exposed to predator cues. Bottom panels: larvae previously exposed to predator cues. Different letters indicate significant differences between testing predator cue treatments. Asterisks indicate significant preferences (**P < 0.01; ***P < 0.001).