About the Authors

Gerda Saxer

gsaxer@rice.edu

Affiliations Department of Biology and Biochemistry, University of Houston, Houston, Texas, United States of America, Department of Zoology, University of British Columbia, Vancouver, British Columbia, Canada, Department of Ecology and Evolutionary Biology, Rice University, Houston, Texas, United States of America

Michael Doebeli

Affiliations Department of Zoology, University of British Columbia, Vancouver, British Columbia, Canada, Department of Mathematics, University of British Columbia, Vancouver, British Columbia, Canada

Michael Travisano

Affiliations Department of Biology and Biochemistry, University of Houston, Houston, Texas, United States of America, Department of Ecology, Evolution and Behavior, University of Minnesota, St. Paul, Minnesota, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: GS MD MT. Performed the experiments: GS. Analyzed the data: GS MT. Contributed reagents/materials/analysis tools: MD MT. Wrote the paper: GS MD MT.