1. Animal and Plant Sciences University of Sheffield Western Bank Sheffield S10 2TN UK
2. Department of Biosciences University of Helsinki PO Box 65 (Viikinkaari 1) FI‐00014 Helsinki Finland
3. Sven Lovén Centre – Tjärnö University of Gothenburg SE 452 96 Strömstad Sweden
4. Institute for Evolution and Ecology University of Tübingen Auf der Morgenstelle 28 D‐72076 Tübingen Germany
5. Animal Population Ecology, Animal Ecology I Bayreuth Center of Ecology and Environmental Research (BayCEER) University of Bayreuth Universitätsstrasse 30 95440 Bayreuth Germany