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Post-breeding migrations of newts (Triturus cristatus and T. marmoratus) with contrasting ecological requirements

Jehle, R and Arntzen, JW 2000, 'Post-breeding migrations of newts (Triturus cristatus and T. marmoratus) with contrasting ecological requirements' , Journal of Zoology, London, 251 , pp. 297-306.

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    Abstract

    Two newt species with contrasting ecological requirements (Triturus cristatus and T. marmoratus) were radio-tracked after leaving a shared breeding pond in western France. Movements of 30 individuals were recorded over 491 days. During the ®rst terrestrial night, the newts migrated with high directionality up to 137 m to their refuges. Burrows of small mammals were among the favourite refuges. Movements after the ®rst night were mostly underground and over shorter distances (< 6.8 m). Sixty-four per cent of all tracked newts stayed within 20 m of the pond edge, and migrations were recorded up to 146 m away from the pond. Both species preferred areas with bushes, hedgerows and trees, and avoided pastures and open areas. Migration in the direction of a habitat type characterized by trees and underground shelters was favoured over migrations in other directions. A clear terrestrial niche separation between the two newt species was not observed. The results are discussed in relation to previous ®ndings that T. cristatus supersedes T. marmoratus as a consequence of anthropogenic change to the terrestrial environment, affecting the species differentially.

    Item Type: Article
    Uncontrolled Keywords: amphibians, migration, radio-tracking, Triturus cristatus, Triturus marmoratus
    Themes: Subjects / Themes > Q Science > QL Zoology
    Subjects / Themes > Q Science > QH Natural history > QH301 Biology
    Subjects outside of the University Themes
    Schools: Colleges and Schools > College of Science & Technology
    Colleges and Schools > College of Science & Technology > School of Environment and Life Sciences
    Colleges and Schools > College of Science & Technology > School of Environment and Life Sciences > Ecosystems and Environment Research Centre
    Journal or Publication Title: Journal of Zoology, London
    Publisher: Blackwell Publishing
    Refereed: Yes
    ISSN: 0952-8369
    Depositing User: Users 29196 not found.
    Date Deposited: 30 Oct 2009 14:15
    Last Modified: 20 Aug 2013 17:00
    URI: http://usir.salford.ac.uk/id/eprint/2402

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