1. Research Centre in Evolutionary Anthropology and Palaeoecology School of Biological and Environmental Sciences Liverpool John Moores University UK
2. Département d'Ecologie et de Gestion de Paris C.N.R.S/M.N.H.N. Paris France
3. Recinto de Golfito Universidad de Costa Rica Golfito Costa Rica
4. Smithsonian Tropical Research Institute Balboa Ancón República de Panamá
5. Wildlife Research Unit Dipartimento di Agraria Università degli Studi di Napoli Federico II Portici Italy
6. School of Biological Sciences Life Sciences Building University of Bristol Bristol UK
7. Department of Veterinary Medical Sciences University of Bologna Ozzano dell'Emilia Italy