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Fig. 2. Experiments 1, 2 and 4. (A) Filled circle, nest entrance; open circle,
position of fictive nest when path integrator has not been reset; square,
position of feeder or fictive feeder when path integrator has been reset.
Black lines, trajectories of ants released close to the nest (N=15);
red lines, trajectories of ants reset into the nest (N=17); blue
lines, trajectories of ants released in cages into the nest entrance
(N=16); grey lines, trajectories of control ants, heading to the
feeder (N=40). All runs were cut to the first transgression of a 6 m
circle around the nest entrance. (B) First intersections of trajectories with
a 6 m circle around the nest entrance. Open circles, first intersections;
black, Experiment 1; red, Experiment 2; blue, Experiment 4; grey, control;
arrows give the mean direction and the directionality with the radius of the
large circle meaning a maximum concentration with r=1 and the marker
denoting the border of significance with P=0.01.
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