Fig. 7. Stopping points. (A) Example trajectories from the control condition with no food present (food in training is 100 cm along the wall). (B-D) Stopping points from individual runs with walls of different length. The stopping point of a trajectory is taken as the point where the ant turns through more than 90° and heads back towards the start position (see Materials and methods). (B) Control condition with same wall length as in training, (C,D) Tests with an 85 cm long wall and a 155 cm long wall, respectively, putting visual cues and cues from distance walked into conflict. Individual stopping points are shown as crosses. Mean stopping points are shown by the intersection of the major and minor axes of the 95% confidence ellipse of the mean. Large arrows show the predicted stopping points along the x dimension (the predicted stopping points for visual cues are indicated by black arrows, the predicted stopping points for cues from distance walked by grey arrows). (E) Example trajectories from the 155 cm length wall condition. Trajectories remain at 20 cm from the wall until the start of search behaviour.

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