Manganese food supplement rescues effects of neuronal Mvl knockdown on behavior. (A) Feeding manganese rescues the effect of neuronal Mvl knock down on food choice behavior. **, t-test, t15 = 5.1628, p < 0.01. (B) General feeding-drive control experiment. Genotypes and conditions as in A. (C) Effect of neuronal Mvl knockdown and manganese treatment on total dry weight. Different letters above bars represent significantly different groups (ANOVA, p<0.05, Tukey posthoc test). (D) Effect of neuronal Mvl knockdown and manganese on glucose levels (ANOVA, NS).