Figure 1.
Brain dopamine (DA) and N-acetyldopamine (NADA) levels (mean ± s.d.) in the No. 1 (a,c) and No. 2 larvae (b,d) between day 0 and 3 after appearance. Sample numbers examined are shown in parentheses. Each sample was pooled from two individuals. p-values (Welch's t-test) are shown above the bars.