Tameness and stress physiology in a predator-naive island species confronted with novel predation threat

  title={Tameness and stress physiology in a predator-naive island species confronted with novel predation threat},
  author={Thomas R{\"o}dl and Silke Berger and L. Michael Romero and Martin Wikelski},
  journal={Proceedings of the Royal Society B: Biological Sciences},
  pages={577 - 582}
  • T. Rödl, S. Berger, M. Wikelski
  • Published 22 February 2007
  • Environmental Science
  • Proceedings of the Royal Society B: Biological Sciences
Tame behaviour, i.e. low wariness, in terrestrial island species is often attributed to low predation pressure. However, we know little about its physiological control and its flexibility in the face of predator introductions. Marine iguanas (Amblyrhynchus cristatus) on the Galápagos Islands are a good model to study the physiological correlates of low wariness. They have lived virtually without predation for 5–15 Myr until some populations were first confronted with feral cats and dogs some… 

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