Comparison of interaction rate and time in entrance chamber in outgoing foragers and descending ants.

<p>A) Each bar shows the mean rate of brief antennal contacts, in interactions per second, of ants in the entrance chamber. B) Each bar shows the mean time in seconds that ants spent in the entrance chamber. Black: ants that subsequently left the nest to forage (outgoing foragers); White: ants that descended from the entrance chamber to the deeper nest (descending ants). Error bars show standard errors of the mean.