Annual Rhythmics of Lacerta vivipara JACQUIN and Lacerta agilis agilis L. (Sauria, Lacertidae) in the Netherlands

In: Amphibia-Reptilia
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  • 1 1Dept. of Animal Ecology, Catholic University of Nijmegen, Toernooiveld, 6525 ED Nijmegen, The Netherlands
  • 2 2Dept. of Animal Ecology, Catholic University of Nijmegen, Toernooiveld, 6525 ED Nijmegen, The Netherlands

Abstract

This article shows what method is suitable for an accurate determination of the annual rhythmics of lizard species. Such a determination can be reached with the help of, amongst others, mating scars, presence of deep skin folds and the structure of the navel scars in juveniles. This method was applied in a five year intensive poulation study on Lacerta vivipara and Lacerta agilis agilis in the south-east of the Netherlands. The data on rhythmics obtained thus are discussed.

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