Fig 2. Within-cocoon synchronization and between cocoons variability in the onset of locomotion.

The interindividual distance and the level of mobility were determined from the spatial coordinates of spiderlings introduced to dispersal arenas photographed every 10 min for 12 consecutive days. (A) Average (± 95% CI, N = 14) mean interindividual distances in groups of four spiderlings introduced to dispersal arenas. (B-C) Average (± 95% CI) activity level of siblings tested alone (B) (N = 14) or in groups (C) (N = 14). (D to I) Interindividual distance and mobility level in spiderlings from two representative cocoons differing in their timing of dispersal. Relevant data values are included in S2 Data. The grey shading indicates nocturnal phases.