About the Authors

Martin Olofsson

martin.olofsson@zoologi.su.se

Affiliation Department of Zoology, Stockholm University, Stockholm, Sweden

Stephan Eriksson

Affiliation Department of Zoology, Stockholm University, Stockholm, Sweden

Sven Jakobsson

Affiliation Department of Zoology, Stockholm University, Stockholm, Sweden

Christer Wiklund

Affiliation Department of Zoology, Stockholm University, Stockholm, Sweden

Competing Interests

The authors have declared that no competing interests exist.

Author Contributions

Conceived and designed the experiments: MO SE SJ CW. Performed the experiments: MO SE. Analyzed the data: MO SE. Contributed reagents/materials/analysis tools: MO SE SJ CW. Wrote the paper: MO SE SJ CW.