Figure 3.

The movements and gaze directions of ants on release platforms. Five examples each of full-vector (a) and zero-vector (b) ant behaviour upon release on 10 m distant platforms. Left columns: ant paths (red lines, FV; black lines, ZV) with nest direction indicated by black arrow, the direction of the path integration vector indicated by red arrow. Centre columns: gaze directions (red lines) and bearings (green lines) relative to the true home direction at 0°. Right columns: walking speed of ants. Note that time runs from bottom to top on the vertical axis. (c) The average time ants spend on the platform at low and high walking speeds. Box plot conventions: lower whisker: 10% quartile; box bottom: first quartile; horizontal line: median; black dot: mean; box top: third quartile; top whisker: 90% quartile. Zero-vector ants (grey boxes) do not spend significantly more time walking slowly compared with the full-vector ants (red boxes). See text for the results of a statistical analysis.