Sex-specific effect of pool desiccation on the movement of Alpine newts, Mesotriton alpestris (Laurenti, 1768), among breeding sites (Caudata: Salamandridae)
[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.
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 - ULiège > Département de Biologie, Ecologie et Evolution > Biologie du comportement - Ethologie et psychologie animale
Language :
English
Title :
Sex-specific effect of pool desiccation on the movement of Alpine newts, Mesotriton alpestris (Laurenti, 1768), among breeding sites (Caudata: Salamandridae)
Publication date :
2011
Journal title :
Herpetozoa
ISSN :
1013-4425
Publisher :
OGH, Wien, Austria
Volume :
24
Issue :
3/4
Pages :
127-134
Peer reviewed :
Peer reviewed
Funders :
F.R.S.-FNRS - Fonds de la Recherche Scientifique [BE] ULg FSR - Université de Liège. Fonds spéciaux pour la recherche [BE] CULS - Czech University of Life Sciences Prague [CZ]
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