Issue |
Knowl. Managt. Aquatic Ecosyst.
Number 408, 2013
|
|
---|---|---|
Article Number | 05 | |
Number of page(s) | 5 | |
DOI | https://doi.org/10.1051/kmae/2013040 | |
Published online | 15 April 2013 |
Feeding ecology of two newt species (Triturus cristatus and Lissotriton vulgaris) during the reproduction season
L’écologie alimentaire de deux espèces de tritons (Triturus cristatus et Lissotriton vulgaris) pendant la saison de reproduction
1 Centre of Advanced Research in Bionanoconjugates and Biopolymers, “Petru Poni” Institute of Macromolecular Chemistry, 41A Aleea Grigore Ghica-Voda, 700487 Iasi, Romania
2 Department of Zoology, Oklahoma State University, 501 Life Sciences West, 74078 Stillwater, Oklahoma, USA
3 Faculty of Biology, “Alexandru Ioan Cuza” University, 20A Carol I Bvd., 700505 Iaşi, Romania
⋆ Corresponding author: iulian.gherghel@okstate.edu
Received: 24 November 2012
Revised: 17 January 2013
Accepted: 5 February 2013
The aim of this study was to provide an in-depth survey of feeding ecology and trophic interactions of two syntopic newt species (Triturus cristatus and Lissotriton vulgaris) inhabiting aquatic breeding habitats from the eastern Romanian Carpathian Mountains. We sampled 736 individuals from both species. The trophic spectrum was based mostly on Asselidae (>30%). Our results show that both species may be considered generalists because their niche breadth is higher than 0.5, with largely overlapping trophic niches (>70%), which may indicate food competition.
Résumé
Le but de cette étude était d’analyser en profondeur l’écologie alimentaire et les interactions trophiques de deux espèces syntopiques de tritons (Triturus cristatus et Lissotriton vulgaris) vivant dans les habitats aquatiques dans l’est des Carpates roumaines. Nous avons échantillonné 736 individus des deux espèces. Le spectre trophique a été basé principalement sur les Asselidae (>30 %). Nos résultats montrent que les deux espèces peuvent être considérées comme des généralistes, car leur largeur de niche est supérieure à 0,5, en grande partie avec chevauchement des niches trophiques (>70 %), ce qui pourrait indiquer une concurrence alimentaire.
Key words: feeding relations / resource partitioning / trophic niche / interspecific competition / Salamandridae
Mots clés : relations alimentaires / partitionnement des ressources / niche trophique / concurrence interspécifique / Salamandridae
© ONEMA, 2013
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