Science Advances

Supplementary Materials

This PDF file includes:

  • fig. S1. Relationships between measures of activity and cohesion in this study versus those more typically used, wherein animals are unconstrained by a maze.
  • fig. S2. Following behavior in the trials.
  • fig. S3. The effect of predation risk in the source habitat on the number of initiations and number of follows per individual fish.
  • fig. S4. Relationship between the number of initiations made by each fish in the first versus second half of each trial.
  • fig. S5. Relationship between the number of initiations made by two fish in groups from each predation level.
  • fig. S6. Frequency of using each arm for initiations and follows by fish from habitats with different levels of predation risk.
  • fig. S7. Effect of applying a threshold based on the level of uncertainty of whether a segment of track belongs to a particular fish.
  • table S1. Populations, their level of predation, and the location where they were sampled.
  • table S2. Full statistical results for linear models including sample sizes.
  • table S3. Summary of sample sizes.
  • Legend for movie S1
  • Legends for data files S1 and S2

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Other Supplementary Material for this manuscript includes the following:

  • movie S1 (.mov format). Example of group decisions and collective movement of guppies in the three-armed maze.
  • data file S1 (Microsoft Excel format). Data for individual fish behavior, aggregated over each trial.
  • data file S2 (Microsoft Excel format). Data for individual fish behavior, aggregated over the first and second halves of the trials.

Files in this Data Supplement: