1. Evolutionary Biology Centre Department of Ecology and Genetics/Animal Ecology Uppsala University Norbyvägen 18D SE‐75236 Uppsala Sweden
2. Department of Biosciences University of Helsinki PO Box 65 FI‐00014 Helsinki Finland
3. Department of Zoology/Ethology Stockholm University Svante Arrhenius väg 18B SE‐10691 Stockholm Sweden
4. ETH Zürich Institute of Integrative Biology (IBZ) Universitätsstrasse 16 8092 Zürich Switzerland
5. IFM Biology Linköping University Campus Valla SE‐58183 Linköping Sweden