Book Chapter
Berger, S.; Wikelski, M.; Kalko, E. K. V.; Rödl, T.: Rapid phenotype transition within a reproductive season in male marine iguanas – a matter of hormones and the environment? In: Influence of introduced predators and natural stressors on escape behavior and endocrine mechanisms in an island species, the Galápagos marine iguana (Amblyrhynchus cristatus) (= Dissertation Universität Ulm), pp. 73 - 89 (Ed. Berger, S.) (2006)