|Reference : Sex-specific effect of pool desiccation on the movement of Alpine newts, Mesotriton a...|
|Scientific journals : Article|
|Social & behavioral sciences, psychology : Animal psychology, ethology & psychobiology|
Life sciences : Environmental sciences & ecology
Life sciences : Aquatic sciences & oceanology
|Sex-specific effect of pool desiccation on the movement of Alpine newts, Mesotriton alpestris (Laurenti, 1768), among breeding sites (Caudata: Salamandridae)|
|Kopecky, Oldrich [Czech University of Life Sciences > Department of Zoology and Fish Farming > > >]|
|Vojar, Jiri [Czech University of Life Sciences > Department of Ecology > > >]|
|Denoël, Mathieu [Université de Liège - ULg > Département de Biologie, Ecologie et Evolution > Biologie du comportement - Ethologie et psychologie animale >]|
|[en] rut ; sit fidelity ; temporary pond ; dessication ; between-pool movement ; CMR ; Mesotriton alpestris ; Triturus alpestris ; Ichthyosaura alpestris ; Alpine newt ; Czech Republic|
|[en] In unpredictable habitats, it is advantageous to amphibians to reduce the risk of weather-induced offspring mortality by utilization of several reproductive patches. In european deciduous forest landscapes, ruts caused by vehicular traffic, typically comprising small vernal or ephemeral pools with variable hydroperiod, are at times used as breeding habitats by some species of amphibians. Previous research shows that in such systems newts move between ruts within a single reproductive season.
The aim was to characterize such movements by means of a capture-mark-recapture study of the alpine
Newt Mesotriton alpestris (laureNti, 1768), during two years differing in water availability, and to detect possible
sex-specific differences. Movement between ruts differed between years according to sex. In the year with
higher pool drying frequency, more females changed ruts than in the year when stable conditions prevailed. Among the adults that moved between ruts, however, the mean number of aquatic patches visited was higher in males. These results show that the sexes can react differently to environmental correlates and that alpine Newts are well adapted to utilize networks of temporary pools.
|Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS ; Université de Liège - Fonds spéciaux de la Recherche ; Czech University of Life Sciences, Prague|
|This paper is published by the Austrian Herpetological Society (http://oegh.nhm-wien.ac.at/hpogh01e.htm)|
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