Fig. 1: Collective motion patterns in female guppies artificially selected for higher polarization.
a Boxplots of median polarization, speed and nearest neighbor distance for groups of eight individuals of polarization-selected (pink diamonds) and control (blue circles) female guppies assayed in an open field test (nPolarization = 89, nControl = 85), with a novel object (nPolarization = 86, nControl = 84) and with a predator model (nPolarization = 87, nControl = 82). Horizontal lines indicate medians, boxes indicate the interquartile range, and whiskers indicate all points within 1.5 times the interquartile range. Asterisks indicate p < 0.05 (see methods; Supplementary Tables 1 and 2). b Heatmaps of group polarization across different locations of the experimental arena when control (top) and polarization-selected (bottom) groups were exposed to open field, novel object and predator model assays. Grid cells with data for less than 8 groups were not depicted. Source data are provided as a Source Data file.
