About the Authors

Rebecca J. Best

rjbest@ucdavis.edu

Affiliation Department of Evolution and Ecology, University of California Davis, Davis, California, United States of America

John J. Stachowicz

Affiliation Department of Evolution and Ecology, University of California Davis, Davis, California, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: RJB JJS. Performed the experiments: RJB. Analyzed the data: RJB. Contributed reagents/materials/analysis tools: RJB JJS. Wrote the paper: RJB JJS.