Predator-induced changes in the chemical defence of a vertebrate

Allbwn ymchwil: Cyfraniad at gyfnodolynErthygladolygiad gan gymheiriaid

Fersiynau electronig

Dangosydd eitem ddigidol (DOI)

  • Attila Hettyey
    Hungarian Academy of Sciences
  • Bálint Üveges
    Lendület Centre for Agricultural Research, BudapestHungarian Academy of Sciences
  • Ágnes M Móricz
    Hungarian Academy of Sciences
  • László Drahos
    Hungarian Academy of Sciences
  • Robert J Capon
    School of Human Movement and Nutrition Sciences, Faculty of Health and Behavioral Sciences, The University of Queensland
  • Josh Van Buskirk
    University of Zurich
  • Zoltán Tóth
    Hungarian Academy of Sciences
  • Veronika Bókony
    Hungarian Academy of Sciences

1. Inducible defences are ubiquitous in the animal kingdom, but little is known about facultative changes in chemical defences in response to predators, especially so in vertebrates. 2. We tested for predator-induced changes in toxin production of larval common toads (Bufo bufo), which are known to synthesize bufadienolide compounds. 3. The experiment included larvae originating from three permanent and three temporary ponds reared in the presence or absence of chemical cues of three predators: dragonfly larvae, newts or fish. 4. Tadpoles raised with chemical cues of predation risk produced higher numbers of bufadienolide compounds and larger total bufadienolide quantities than predator-naive conspecifics. Further, the increase in intensity of chemical defence was greatest in response to fish, weakest to newts and intermediate to dragonfly larvae. Tadpoles originating from temporary and permanent ponds did not differ in their baseline toxin content or in the magnitude of their induced chemical responses. 5. These results provide the first compelling evidence for predator-induced changes in chemical defence of a vertebrate that may have evolved to enhance survival under predation risk.

Allweddeiriau

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Dynodwyr Gwrthrych Digidol (DOIs)
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