Figure 1From: Transcriptional markers of sub-optimal nutrition in developing Apis mellifera nurse workersHypopharyngeal gland (HG) sizes of nurse workers fed or deprived of pollen. HG size was significantly affected by both diet and age in developing workers fed a diet of pollen and honey (grey bars) or a diet of honey alone (white bars), as measured by HG acinus size (mm2). Error bars represent standard error for the mean acinus size across the three colonies (N = 3) tested. Asterisks represent the results of a post-hoc Tukey-Kramer test on the mean acinus sizes for each diet by treatment combination and represent either a p < 0.05 (*) or p < 0.001 (**) level of significance. There was no significant difference in mean acinus size between 3d and 8d old bees fed only honey.Back to article page