Figure 2.

LPS decreases the amount of sucrose consumed by harnessed animals. Mean and SEM of the volume of sucrose ingested by bees in each treatment group at different times after injection. 60, 90 min, and 15 h correspond to three independent groups of bees (each bee was measured only once). The volume ingested by each individual bee was normalized to the average volume consumed by bees in the respective saline group. Number of animals is indicated within each bar. Two-tailed unpaired Student's t-test: ^**p < 0.01, ^***p < 0.001.