About the Authors
Burke Museum and Department of Biology, University of Washington, Seattle, Washington, United States of America
Department of Biology, University of Missouri-St. Louis, St. Louis, Missouri, United States of America
The authors have declared that no competing interests exist.
The author(s) have made the following declarations about their contributions: Conceived and designed the experiments: SR RER VGR MC. Performed the experiments: SR RER VGR MC. Analyzed the data: SR RER VGR MC. Wrote the paper: SR RER.