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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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.
|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|
|Depositing User:||Users 29196 not found.|
|Date Deposited:||30 Oct 2009 14:15|
|Last Modified:||27 Sep 2011 12:31|
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