1. CNRS, UMR5558; Laboratoire de Biométrie et Biologie Evolutive; F-69622, Université Lyon 1 Villeurbanne France
2. Zoological Garden Halle (Saale); Fasanenstr. 5a; 06114 Halle (Saale) Germany
3. World Association of Zoos and Aquariums (WAZA); Gland Switzerland
4. UMR 5175, Modelling and Conservation, Centre d'Ecologie Fonctionnelle et Evolutive; Campus CNRS; 1919 route de Mende 34293 Montpellier Cedex 5 France
5. Clinic for Zoo Animals, Exotic Pets and Wildlife, Vetsuisse Faculty; University of Zurich; Winterthurerstr. 260 8057 Zurich Switzerland