Reference : Facultative paedomorphosis and the pattern of intra- and interspecific variation in c...
Scientific journals : Article
Life sciences : Zoology
http://hdl.handle.net/2268/156898
Facultative paedomorphosis and the pattern of intra- and interspecific variation in cranial skeleton: lessons from European newts (Ichthyosaura alpestris and Lissotriton vulgaris)
English
Ivanović, Ana [Institute for Zoology, University of Belgrade > > > >]
Cvijanović, Milena [Institute for Biological Research Siniša Stanković, University of Belgrade > Department of Evolutionary Biology, > > >]
Denoël, Mathieu mailto [Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Biologie du comportement - Ethologie et psychologie animale >]
Slijepčević, Maja [Institute for Biological Research Siniša Stanković, University of Belgrade > Department of Evolutionary Biology > > >]
Kalezić, Miloš L. [Institute for Biological Research Siniša Stanković & Institute for Zoology, University of Belgrade > > > >]
Mar-2014
Zoomorphology
Springer Science & Business Media B.V.
133
1
99-109
Yes (verified by ORBi)
International
0720-213X
1432-234X
[en] Facultative paedomorphosis ; Skull morphology ; Cranial morphology ; Development ; Heterochronic polymorphism ; Intraspecific variation ; Interspecific variation ; European newts ; Amphibian ; Ichthyosaura alpestris alpestris ; Ichthyosaura alpestris montenegrinus ; Ichthyosaura alpestris piperianus ; Lissotriton vulgaris vulgaris ; Lissotriton vulgaris meridionalis ; Lissotriton vulgaris graecus ; Triturus alpestris ; Mesotriton alpestris ; Triturus vulgaris ; Alpine newt ; Smooth newt ; Montenegro ; Greece ; Pindos ; Alpine lakes ; SSD
[en] Paedomorphosis, the presence of ancestral larval and juvenile traits that occur at the descendent adult stage, is an evolutionary phenomenon that shaped morphological evolution in many vertebrate lineages, including tailed amphibians. Among salamandrid species, paedomorphic and metamorphic phenotypes can be observed within single populations (facultative paedomorphosis). Despite wide interest in facultative paedomorphosis and polymorphism produced by heterochronic changes (heterochronic polymorphism), the studies that investigate intraspecific morphological variation in facultative paedomorphic species are largely missing. By quantifying the cranium size and development (bone development and remodeling), we investigated the variation at multiple levels (i.e., between sexes, populations and species) of two facultatively paedomorphic European newt species: the alpine and the smooth newt. The pattern of variation between paedomorphs (individuals keeping larval traits at the adult stage) and metamorphs (metamorphosed adult individuals) varied between species and among populations within a single species. The patterns of variation in size and skull formation appear to be more uniform in the alpine than in the smooth newt, indicating that developmental constraints differed between species (more pronounced in alpine than in smooth newt). Our study shows that the cranial skeleton provides detailed insight in the pattern of variation and divergence in heterochronic polymorphism within and between species and open new questions related to heterochronic polymorphism and evolution of cranial skeleton.
Applied and Fundamental FISH Research Center - AFFISH-RC
F.R.S.-FNRS - Fonds de la Recherche Scientifique ; Université de Liège (Fonds Spéciaux de la Recherche)
Researchers ; Professionals ; Students
http://hdl.handle.net/2268/156898
10.1007/s00435-013-0202-7
The published version of this paper is available on Springer website (http://link.springer.com/)

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Zoomorphology-Supplement1.mp4Supplement1: Three-dimensional view of paedomorphic Ichthyosaura alpestris. (MP4 2609 kb)2.61 MBView/Open
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Zoomorphology-supplement2.mp4Three-dimensional view of paedomorphic Lissotriton vulgaris. (MP4 1492 kb)1.49 MBView/Open
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