Figure S1 from Aggression and discrimination among closely versus distantly related species of Drosophila

Closely related species pairs were equally aggressive toward heterospecifics and conspecifics. Shown are frequency histograms of heterospecific (orange) and conspecific (blue) lunge counts of closely related species pairs. Focal species is the aggressor that lunges on itself or the non-focal species (focal-nonfocal), with the same species name abbreviations as in Table 1. Vertical dashed lines indicate mean lunge counts. Ratio of mean lunge counts ( RL ; heterospecific:conspecific), number of aggression trials ( N ), and significance of the difference between the distributions of lunge counts based on the z-test ( P ) are shown in the upper right of each panel.