1. Environment Analysis and Management Unit; Guido Tosi Research Group; Department of Theoretical and Applied Sciences; Università degli Studi dell'Insubria; Varese Italy
2. Department of Psychology; University of Michigan; Ann Arbor Michigan
3. Department of Ecology and Evolutionary Biology; University of Michigan; Ann Arbor Michigan
4. Unit of Physiology, Pathophysiology and Experimental Endocrinology; Department of Biomedical Sciences; University of Veterinary Medicine Vienna; Vienna Austria
5. Department of Veterinary Sciences and Public Health; Università degli Studi di Milano; Milan Italy
6. Department of Biology; Evolutionary Ecology Group; University of Antwerp; Wilrijk Belgium