Comparison of model results with observations.

Experimental data is from Harbo, (1986) for hives set up in April. The model results were obtained by running the model for 21 days. The experimental hive was set up for 22 days but the queen was only free to lay after day 2. At the start of each model run, there was no brood or food in the hive and one third of the adult bees were foragers. The parameters used were L = 2000, = 1/9, v = 5000, = 1.3, = 0.25, = 0.25, b = 500, c = 0.09, = 0.007, = 0.018, m = 0.06 and = 21 (which prevented any adult bees emerging during the simulations to match the experimental set-up).