About the Authors
Department of Mathematics and Statistics, University of Guelph, Guelph, Canada
Department of Ecology and Evolutionary Biology, Princeton University, Princeton, New Jersey, United States of America
Department of Mathematics, University of Utah, Salt Lake City, Utah, United States of America
The authors have declared that no competing interests exist.
Conceived and designed the experiments: CTB. Performed the experiments: CTB SB. Analyzed the data: CTB SB. Contributed reagents/materials/analysis tools: CTB SB. Wrote the paper: CTB SB.