About the Authors

C. William Birky Jr

birky@u.arizona.edu

Affiliations Department of Ecology and Evolutionary Biology, Biological Sciences West, The University of Arizona, Tucson, Arizona, United States of America, Graduate Interdisciplinary Program in Genetics, Biological Sciences West, The University of Arizona, Tucson, Arizona, United States of America

Joshua Adams

Current address: Mt. Prospect, Illinois, United States of America

Affiliation Department of Ecology and Evolutionary Biology, Biological Sciences West, The University of Arizona, Tucson, Arizona, United States of America

Marlea Gemmel

Affiliation Department of Ecology and Evolutionary Biology, Biological Sciences West, The University of Arizona, Tucson, Arizona, United States of America

Julia Perry

Current address: Phoenix, Arizona, United States of America

Affiliation Department of Ecology and Evolutionary Biology, Biological Sciences West, The University of Arizona, Tucson, Arizona, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: CWBJ. Performed the experiments: CWBJ JA MG JP. Analyzed the data: CWBJ. Wrote the paper: CWBJ. Proofread the paper: JA MG JP.