Fig. 4

The yeast and sugar content in the developmental diet has a significant effect on thorax length. Individuals raised on the developmental diet with low (2.5%) yeast or with high (25%) sugar contents have reduced thorax length. Data for each population were analysed by one-way ANOVA followed by Tukey’s HSD test (α = 0.05). Plots marked with different letters are significantly different from each other. Box plots depict minimum, first quartile, median, third quartile, and maximum value. For detailed statistical analyses, see Additional file 1: Table S7