Fig. 3.

Correlations between the number of 5-HT-ir cells in the middle region of the raphe and gonadosomatic index (GSI), standard length and body mass. When data for subordinate (orange circles) and dominant (blue circles) groups (N=5 per group) were collapsed into a single data set, the number of 5-HT cells was positively correlated with GSI (A), but no relationship was found with standard length (B) or body mass (C). Each point represents one individual with the number of 5-HT-ir cells in the middle raphe region plotted on the y-axis. Correlation coefficients (r) and corresponding P-values are shown.