Figure 4.

(A) The expression profile of Egr-1 (blue), Hr38 (red), and Kakusei (green) during the extended collection hour (15:00 h−16:00 h). (B) The expression of Egr-1 (blue), Hr38 (red), and Kakusei (green) during unrewarded foraging. The fold change differences were calculated with respect to 0 min (mean value was set as 1 at this time point). Each time point has a sample size of n = 5. For statistics, one-way ANOVA with Tukey–Kramer post-hoc multiple comparison test was performed. p ≥ 0.05 is considered to have no significant difference and p < 0.05 is considered to be significantly different between the means. The statistical difference between the adjacent groups is represented by letters a, b, or c. Same letters above the adjacent error bars represent no significant difference and different letters represent a significant difference. Sample size for each time point is n = 5.