Fig. 7.

Median gustatory response scores (GRS, closed circles) and quartiles (upper and lower lines) of bees tested for tactile discrimination in experiment 2. We analysed foragers with short foraging durations (6–13 days) and age-matched nurse bees as well as foragers with long foraging durations (>15 days) and age-matched nurse bees. Only bees that had an acquisition score of 1 or higher were analysed for discrimination. The numbers of bees in each group are: nurse bees 6–13 days, 27; foragers 6–13 days, 28; nurse bees >15 days, 27; foragers >15 days, 20.