Daily expression levels at 0, 3, 7 dpf of <i>clock1 bmal1</i>, <i>per1b</i>, <i>per2 and dbp</i> under different lighting conditions.

<p>The data are expressed as mean ± SEM. The letters above each bar indicate significant differences for each condition among the days (one-way-ANOVA, p<0.05). The symbols on the top indicates statistically differences between the lighting conditions (two-way-ANOVA, Tukey’s post-hoc test, p<0.05).