Figure 6
From: Less fit Lamium amplexicaule plants produce more dispersible seeds
Ants prefer unspotted seeds: Grid-based method. (A) An inverse Kaplan-Meier plot of ants’ seed preference in a grid-based experiment, where the Y-axis presents the proportion of seeds removed. Seeds were divided to two groups: spotted seeds (blue) and unspotted seeds (red). The vertical dashed line indicates the time where half of the total seeds were taken (see B). The experiment showed that unspotted seeds were removed before spotted seeds (p < 0.0008, n = 32, Wilcoxon rank-sum). (B) The grid after 50% of the seeds were removed by ants in an 8-by-8 grid-based seed preference experiment, where unspotted and spotted seeds were arranged in a checkers board format (with the board itself uniformly white). Square color was retrospectively added for visualization, to highlight the type of the remaining seeds on the grid - spotted (blue) vs. unspotted (red). Empty squares stand for collected seeds.
