Figure 3
Percentage of individual Nosema- infected forager bees per group ( n = 200 bees individually analysed per group and time point; i.e. 20 bees from each of the 10 colonies of every group). Analyses were performed in the autumn 2007 (pre- and post-intervention) and spring 2008 (pre- and post-intervention). Asterisk indicates significant differences found (P < 0.01) in the pre-post intervention interval.