Fig. 3

Relative looping durations (in %) in functional darkness (IR illumination) and under WL illumination during a parabolic flights (H. incongruens and N. monacha, n = 18, except for H. incongruens in WL: n = 12) and during b clinorotation (H. incongruens, nIR = 10, nWL = 7). Mean value ± SEM, levels of significance: ***p ≤ 0.001, n.s. = not significant