1. Vrije Universiteit Amsterdam, Department of Theoretical Biology, De Boelelaan 1085, 1081 HV, Amsterdam, The Netherlands
2. Vrije Universiteit Amsterdam, Department of Molecular Cell Physiology, De Boelelaan 1085, 1081 HV, Amsterdam, The Netherlands
3. Vrije Universiteit Amsterdam, Department of Animal Ecology, De Boelelaan 1085, 1081 HV, Amsterdam, The Netherlands