Figure 4
From: Ants modulate stridulatory signals depending on the behavioural context
PLS-DA results for (a) Test 1 and (b) Test 2 with the comparison with workers restraining signals. Ellipses represent the 95% confidence region of occurrence of samples in one group. (a) plus and cross signs/red lines: forward and backward chirps of queens; circles and triangles signs/blue lines: forward and backward chirps of males; overturned triangles and diamonds signs/green lines: forward and backward chirps of workers. (b) Circles signs/violet line: small honey drop chirp (2 μl); triangles signs/light green line: large honey drop chirp (20 μl); plus signs/dark green: restraining chirp.
