1. Animal Physiology, Institute for Neurobiology, University of Tübingen, Auf der Morgenstelle 28, 72076 Tübingen, Germany.
2. Institute for Evolutionary Ecology and Conservation Genomics, University of Ulm, Albert-Einstein-Allee 11, 89069 Ulm, Germany; Smithsonian Tropical Research Institute, Apartado, P.O. Box 0843-03092, Balboa Ancón, Panamá, Republica de Panama.