Change search
ReferencesLink to record
Permanent link

Direct link
Alarm cues experienced by cane toad tadpoles affect post-metamorphic morphology and chemical defences
Stockholm University, Faculty of Science, Department of Zoology, Ethology. (Mattias Hagman)
2009 (English)In: Functional Ecology, ISSN 0269-8463, E-ISSN 1365-2435, Vol. 23, 126-132 p.Article in journal (Refereed) Published
Abstract [en]

 Summary: In many anuran species, larvae modify their developmental trajectories and behaviour in response to chemical cues that predict predator risk. Recent reviews highlight a dearth of studies on delayed (post-metamorphic) consequences of larval experience.

  • 2 We raised cane toad (Bufo marinus) tadpoles either under control conditions or in the presence of non-lethal predator cues (crushed conspecifics).
  • 3 Exposure to these chemical cues massively reduced size at metamorphosis, as predicted by theory. Parotoid glands were larger relative to body size in post-metamorphic animals from the experimental treatment, suggesting higher investment in chemical defences.
  • 4 Exposure to chemical cues from crushed conspecifics during larval life reduced total bufadienolide content of metamorphs, but increased amounts of one specific bufadienolide (bufalin).
  • 5 Hence, cane toads respond to perceived predation risk in the aquatic environment by metamorphosing at a smaller size and modifying their investment in defensive toxins during post-metamorphic life.
  • 6 Phenotypically flexible responses to larval conditions vary among amphibian taxa, and can involve significant carry-over effects into post-metamorphic life.
  • Place, publisher, year, edition, pages
    2009. Vol. 23, 126-132 p.
    Keyword [en]
    Bufo marinus;chemical defences;developmental plasticity;phenotypic plasticity
    National Category
    Research subject
    URN: urn:nbn:se:su:diva-36835DOI: 10.1111/j.1365-2435.2008.01470.xOAI: diva2:290542
    Available from: 2010-01-27 Created: 2010-01-27 Last updated: 2011-04-05Bibliographically approved

    Open Access in DiVA

    No full text

    Other links

    Publisher's full textAbstract

    Search in DiVA

    By author/editor
    Hagman, Mattias
    By organisation
    In the same journal
    Functional Ecology

    Search outside of DiVA

    GoogleGoogle Scholar
    The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

    Altmetric score

    Total: 43 hits
    ReferencesLink to record
    Permanent link

    Direct link