About the Authors

David B. Baier

dbaier@providence.edu

Affiliation Department of Biology, Providence College, Providence, Rhode Island, United States of America

Stephen M. Gatesy

Affiliation Department of Ecology and Evolutionary Biology, Brown University, Providence, Rhode Island, United States of America

Kenneth P. Dial

Affiliation Division of Biological Sciences, University of Montana, Missoula, Montana, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: DBB KPD SMG. Performed the experiments: DBB. Analyzed the data: DBB KPD SMG. Contributed reagents/materials/analysis tools: DBB KPD SMG. Wrote the paper: DBB. Contributed extensively to drafting and revising the manuscript: KPD SMG.