Skeletochronology of phalanges underestimates the true age of long-lived Alpine newts (Ichthyosaura alpestris)

Robert Schabetsberger, Marc Sztatecsny, Roland Kaiser

    Veröffentlichungen: Beitrag in FachzeitschriftArtikelPeer Reviewed


    Skeletochronology has become the most widely used method of ageing amphibians. However, bone remodelling, double lines and rapprochement of peripheral lines all hamper exact skeletochronological age determination. In a long-term field study, the age of long-lived Alpine newts (Ichthyosaura alpestris) from a high-altitude population was estimated from cross-sections of phalanges at the time of tagging with PIT tags and again 10-16 years later. The skeletochronologically assessed age at recapture underestimated the time since first capture by 2-19 years, and the observed deviance increased with increasing age estimates at first capture.
    Seiten (von - bis)145-148
    FachzeitschriftHerpetological Journal
    PublikationsstatusVeröffentlicht - 2011

    ÖFOS 2012

    • 106012 Evolutionsforschung