About the Authors

William J. Marringa

Affiliation Department of Biology, University of Wisconsin-Stout, Menomonie, Wisconsin, United States of America

Michael J. Krueger

Affiliation Department of Biology, University of Wisconsin-Stout, Menomonie, Wisconsin, United States of America

Nancy L. Burritt

Affiliation Department of Biology, University of Wisconsin-Stout, Menomonie, Wisconsin, United States of America

James B. Burritt

burrittj@uwstout.edu

Affiliation Department of Biology, University of Wisconsin-Stout, Menomonie, Wisconsin, United States of America

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: JB NB WM. Performed the experiments: WM JB MK. Analyzed the data: WM NB JB MK. Contributed reagents/materials/analysis tools: WM JB NB. Wrote the paper: WM NB JB.