Signal categorization by foraging animals depends on ecological diversity

  1. David William Kikuchi  Is a corresponding author
  2. Anna Dornhaus
  3. Vandana Gopeechund
  4. Thomas N Sherratt
  1. University of Arizona, United States
  2. Carleton University, Canada
3 figures and 2 additional files

Figures

Figure 1 with 2 supplements
Design and results of Experiments 1 - 5.

(A) Properties of the experimental prey communities used in this study, with examples. All communities had a 1:1 ratio of ‘good’ prey to ‘bad’ prey. A reliable trait allowed perfect discrimination. …

https://doi.org/10.7554/eLife.43965.002
Figure 1—source data 1

Data used to generate Figure 1 and its supplements.

Includes results from the test trials of Experiments 1–5. Please refer to Supplementary file 1 for full description and analysis.

https://doi.org/10.7554/eLife.43965.005
Figure 1—figure supplement 1
Tabulated attack rates for prey of different types.

Attack rates when all trait values were recoded, so that they were combined into just two per trait (‘good’ and ‘bad’). For the reliable trait, values are abbreviated B = ‘bad’, G = ‘good’.

https://doi.org/10.7554/eLife.43965.003
Figure 1—figure supplement 2
Tabulated attack rates for prey of different types.

Attack rates when trait values were coded with separate trait values within the ‘good’ and ‘bad’ types. The reliable trait values (colors in the legend) are labeled in descending order of relative …

https://doi.org/10.7554/eLife.43965.004
Figure 2 with 1 supplement
General experimental procedures.

Subjects were randomly assigned to one of four different treatments within each of five experiments. Between treatments, colors and shapes were shuffled with respect to ‘good’ and ‘bad’ prey to …

https://doi.org/10.7554/eLife.43965.006
Figure 2—figure supplement 1
All experimental treatments used in this study.

For illustration, ‘good’ prey are shown on the top three rows of each grid, and ‘bad’ prey on the bottom three rows. In the actual experiment, their locations were randomized. In the top two …

https://doi.org/10.7554/eLife.43965.007
Graphical predictions of hypotheses described in the text.

(A) The relative use of the reliable trait will decrease if increased prey richness causes predators to prefer the unreliable trait. (B) If the relative validity effect is robust to changes in …

https://doi.org/10.7554/eLife.43965.008

Additional files

Supplementary file 1

RMarkdown with full analysis, including code to reproduce all results.

The file includes a legend to the columns of the Figure 1—source data 1 with detailed explanation of the variable codings. It is preferable to use this file as a guide to the data.

https://doi.org/10.7554/eLife.43965.009
Transparent reporting form
https://doi.org/10.7554/eLife.43965.010

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