About the Authors
Department of Evolutionary Biology, Evolutionary Biology Centre, Uppsala University, Uppsala, Sweden
The authors have declared that no competing interests exist.
Conceived and designed the experiments: KNB HE. Performed the experiments: KNB. Analyzed the data: KNB. Contributed reagents/materials/analysis tools: PIO TK LS. Wrote the paper: KNB HE. Contributed analysis scripts and input in the manuscript: RB.