About the Authors

Zhenxiang Xi

Affiliation Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts, United States of America

Joshua S. Rest

Affiliation Department of Ecology and Evolution, Stony Brook University, Stony Brook, New York, United States of America

Charles C. Davis

cdavis@oeb.harvard.edu

Affiliation Department of Organismic and Evolutionary Biology, Harvard University, Cambridge, Massachusetts, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: ZX JSR CCD. Performed the experiments: ZX. Analyzed the data: ZX JSR CCD. Wrote the manuscript: ZX JSR CCD.