Reference : Courtship behavior in the Alpine newt Triturus alpestris at two different densities o...
Scientific journals : Article
Social & behavioral sciences, psychology : Neurosciences & behavior
Social & behavioral sciences, psychology : Animal psychology, ethology & psychobiology
Life sciences : Zoology
Courtship behavior in the Alpine newt Triturus alpestris at two different densities of males
Denoël, Mathieu mailto [Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Biologie du comportement - Ethologie et psychologie animale >]
Hector, Marie-Pierre [>Université de Liège > > >Biologie du Comportement > > >]
Poncin, Pascal mailto [Université de Liège - ULiège > > Biologie du comportement - Ethologie et psychologie animale >]
Herpetologists League
Yes (verified by ORBi)
[en] alternative mating tactics ; density ; newts ; operational sex ratio ; sexual defense ; sexual selection
[fr] Mesotriton alpestris ; Triton alpestre ; amphibien
[en] Ichthyosaura alpestris ; Triturus alpestris ; Alpine newt
[en] The aim of this laboratory experiment was to examine courtship behavior and reproductive success under two different perceived male densities ill the Alpine newt (Triturus alpestris). Male behavioral patterns were similar at unbiased and male-biased operational sex ratios (OSR). Although the exhibition of hiring behaviors is risky in the presence of other males, no difference in the frequencies of displays was found at the two male, densities. Similarly, the responsiveness of females towards males and the Success rate of the encounters (i.e. spermatophore transfer) were not explained by file OSR. Our results show that courting Alphine newts do not change their courtship patterns when other males are present and do not interact directly. However they are not necessarily opposed to those of previous experiments showing sexual interference awl ,female aversion in male-biased OSR with possibility of interactions. These observations suggest that the evolution of courtship behavior may not be driven by the risk of sexual interference with other males prior to potential physical contact and that the benefits of breeding regardless of OSR can overcome the risk of Competition at male-biased OSR.
Fonds de la Recherche Scientifique (Communauté française de Belgique) - F.R.S.-FNRS
Researchers ; Professionals ; Students

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