Reference : Short- and long-term advantages of an alternative ontogenetic pathway
Scientific journals : Article
Life sciences : Aquatic sciences & oceanology
Life sciences : Biochemistry, biophysics & molecular biology
Life sciences : Environmental sciences & ecology
Life sciences : Zoology
http://hdl.handle.net/2268/2974
Short- and long-term advantages of an alternative ontogenetic pathway
English
Denoël, Mathieu mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Biologie du comportement - Ethologie et psychologie animale >]
Hervant, F. [Université Claude Bernard - Lyon 1 - UCLB > > > > > >]
Schabetsberger, R. [University of Salzburg > > > > > >]
Joly, Pierre [Université Claude Bernard - Lyon 1 - UCLB > > > > > >]
2002
Biological Journal of the Linnean Society
Academic Press Ltd Elsevier Science Ltd
77
1
105-112
Yes (verified by ORBi)
International
0024-4066
London
United Kingdom
[en] facultative paedomorphosis ; heterochrony ; polymorphism ; polyphenism ; body condition ; energy intake ; fat reserves ; feeding ; lipid ; triglyceride ; evolution ; habitat ; Drakolimni ; Greece ; Pindos ; Lac de la Cabane ; Ichthyosaura alpestris ; Mesotriton alpestris ; Apennines ; Alpine newt ; Amphibian ; Italy
[fr] pédomorphose ; hétérochronie ; Triton alpestre
[en] We documented hypotheses on the evolution of developmental heterochronies by estimating short- and long-term advantages of alternative morphs. In this respect, we compared food energy intakes and body condition between paedomorphic and metamorphic Alpine newts (Triturus alpestris, Caudata, Amphibia) in four populations. Because we found a strong correlation between fat reserves and body condition, we used this last parameter as an indicator of long-term gains. In all studied sites, paedomorphic females showed higher body condition than metamorphic ones. Paedomorphic males were also at advantage in two populations. Paedomorphs exhibited higher energy intakes than metamorphs in two populations and similar gains in two others. Our results support unifying theories that predict the occurrence of facultative paedomorphosis in varied habitats as paedomorphs exhibited better energy balance than metamorphs. This work shows the need for considering integrative parameters such as body condition in the comparative study of performances when studying developmental heterochronies. (C) 2002 The Linnean Society of London, Biological Journal of the Linnean Society, 2002, 77, 105-112.
Fonds pour la formation à la Recherche dans l'Industrie et dans l'Agriculture (Communauté française de Belgique) - FRIA ; Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS ; Concours des Bourses de voyage ; Fondation Lefranc ; Patrimoine de l'Université de Liège ; Amadeus Project
Researchers ; Professionals
http://hdl.handle.net/2268/2974
10.1046/j.1095-8312.2002.00095.x
The final version of this paper is available at http://onlinelibrary.wiley.com

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