About the Authors

Yuan Li

Yuan.Li@biol.lu.se

Affiliation Department of Biology, Lund University, Lund, Sweden

Stefan Andersson

Affiliation Department of Biology, Lund University, Lund, Sweden

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: YL. Analyzed the data: YL. Wrote the paper: YL SA.