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  • Ralph A. Saporito, Maureen A. Donnelly, Roy A. Norton, H Martin Garraffo, Thomas F. Spande, John William Daly
  • Medicine, Biology
  • Proceedings of the National Academy of Sciences
  • 2007 (First Publication: 22 May 2007)
  • Alkaloids in the skin glands of poison frogs serve as a chemical defense against predation, and almost all of these alkaloids appear to be sequestered from dietary arthropods. CertainExpand
  • Michael Heethoff, Katja Domes, Michael Laumann, Mark Maraun, Roy A. Norton, Stefan Scheu
  • Biology, Medicine
  • Journal of evolutionary biology
  • 2007
  • Theories on the evolution and maintenance of sex are challenged by the existence of ancient parthenogenetic lineages such as bdelloid rotifers and darwinulid ostracods. It has been proposed thatExpand