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Figure 2


Fig. 2. Path-integration in Melophorus bagoti ants. (A) Homebound orientation of ants with outbound distance of 6 m ({theta}=1.22°, r=0.89, N=128), 12 m ({theta}=7.62°, r=0.98, N=80), 20 m ({theta}=1.34°, r=0.99, N=40) and 35 m ({theta}=3.21°, r=0.99, N=40), when released in the test field. Home direction=0°. The mean vector direction {theta} is indicated by the grey arrow. The length of the arrow represents r. (B) Distance path-integrated (means ± s.e.m.) by ants at nest-feeder distances of 6 m (N=128), 12 m (N=80), 20 m (N=40) and 35 m (N=40) in the open field. (C) Homebound distance travelled by ants in linear channels (means ± s.e.m.) with an outbound distance of 6 m (N=24) and 12 m (N=24).