Figure 2.

Sampling behaviour of initially naive bees foraging in treatments that were mimic biased (female flower biased), model biased (male flower biased) or not biased (equal number of male and female flowers). The proportion of (a) first landings (pooled among experiments 1 and 2) or mean proportion of landings (± s.e.) by initially naive bees on mimics (versus models) in the no-bias treatment (experiment 2). n = 43 and 11 bees, respectively. Mean proportion of (b) correct decisions, (c) correct rejections and (d) correct detections made by experienced bees making up to 60 visits. n = 12, 11 and 13 bees in the mimic, model and not biased treatments, respectively. Plotted lines indicate estimated means and shaded regions indicate 95% confidence intervals (CIs). Asterisks indicate significant differences in the proportion or in mean proportions among treatments at p < 0.05 according to a G-test, paired t-test or Tukey's post hoc test.