Figure 2. Effect of Nosema infection on adult worker western honey bee (Apis mellifera) nutritional demand.

Consumption is shown as volume of 50% (weight/volume) sucrose-water mixture per bee per week post inoculation for control, Nosema apis, Nosema ceranae, and mixed N. apis/N. ceranae treatments (Week 4 included only consumption from 22–25 d post inoculation). Boxplots show interquartile range (box), median (black or white line within interquartile range), data range (dashed vertical lines), and outliers (open dots); asterisks (black or white) represent means. No significant differences were observed among treatments for daily consumption per worker.