1. Institute of Arts Creations Theories & Aesthetics, CNRS-University Paris 1 Panthéon-Sorbonne; 47 r. des bergers 75015 Paris France
2. Lund Vision Group, Department of Biology; Lund University; Helgonavägen 3 22362 Lund Sweden
3. Department of Evolutionary Biology and Animal Ecology; Faculty of Biology, University of Freiburg; Hauptstrasse 1 79104 Freiburg Germany