About the Authors
- Martin Olofsson, Stephan Eriksson, Sven Jakobsson, Christer Wiklund
- Department of Zoology, Stockholm University, Stockholm, Sweden
The authors have declared that no competing interests exist.
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.