Figure 5

Larvae adapt their locomotor activity to the ambient light level

A–C  Actograms show mean locomotor activity in wild‐type under a medium (dark blue line) and low (light blue line) intensity LD regime at (A) 5 dpf, (B) 6 dpf and (C) 7 dpf. Spectrum and photoperiod is the same under both conditions. The band on each side of the mean indicates the 95% confidence interval. The bar under the chart indicates the 12:12 h LD interval.

D   Box plot shows a significant reduction in locomotor activity during the wake state under a low (light blue box) than a medium (dark blue box) intensity LD regime on the 5^th, 6^th and 7^th dpf.

E   As in (D) for the rest state (dark phase). No difference in locomotor activity was detected.

F   Larvae show significant less displacement in large‐angle turns at the onset of the dark interval under a low intensity LD regime than under a medium intensity LD regime on the 6^th and 7^th dpf (see also Fig EV3D–F and I).

Data information: In (D–F), boxplot divides the data in quartiles: the box indicates the interquartile range, with the horizontal line in the box denoting the median of the data set, the whiskers extend to the minimum and maximum, and meet the box at the median of the lower (quartile 1) and median of the upper (quartile 3) half of the dataset. Black dots indicate biological replicates (n = 18), the red dot indicates the mean, red error bars indicate the confidence interval (95%) and asterisks indicate significance (0.01 < P(*) < 0.05, 0.001 < P(**) < 0.01, P(***) < 0.001, ns = not significant).