Reference : Trophic diversity of idoteids (Crustacea, Isopoda) inhabiting the Posidonia oceanica lit...
Scientific journals : Article
Life sciences : Zoology
Life sciences : Environmental sciences & ecology
Life sciences : Aquatic sciences & oceanology
http://hdl.handle.net/2268/67868
Trophic diversity of idoteids (Crustacea, Isopoda) inhabiting the Posidonia oceanica litter
English
Sturaro, Nicolas mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Océanologie >]
Caut, Stéphane mailto [Estación Biológica de Doñana - Consejo Superior de Investigationes Científicas (CSIC) > > > >]
Gobert, Sylvie mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Océanologie >]
Bouquegneau, Jean-Marie mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Océanologie >]
Lepoint, Gilles mailto [Université de Liège - ULg > Département des sciences et gestion de l'environnement > Océanologie >]
Feb-2010
Marine Biology
Springer
157
2
237-247
Yes (verified by ORBi)
International
0025-3162
1432-1793
Berlin / Heidelberg
[en] trophic diversity ; seagrass ; phytodetritus ; mixing model ; stable isotopes ; gut analysis ; idoteids ; NW Mediterranean Sea
[en] The coexistence of three idoteid species in Posidonia oceanica litter raises the question of trophic diversity and their role in the litter degradation process. Hence, diet composition of Idotea balthica, Idotea hectica and Cleantis prismatica was studied using a combination of gut contents and stable isotopes analysis. Gut content observations indicate that P. oceanica dead leaves are an important part of the ingested food for the three species, although their tissues are constituted of only a small to medium fraction of P. oceanica carbon. Our results also underlined the potential role of these species in the degradation of P. oceanica litter by mechanically fragmenting the litter and by assimilating a small to medium fraction of carbon. Moreover, we showed that there were considerable inter- and intra-specific differences in diet composition. Diet differed between juveniles and adults for I. balthica. Crustaceans are an important food source for adults of I. balthica, while I. hectica indicated a major contribution of algal material. C. prismatica showed an intermediate diet. This trophic diversity is probably one of the factors allowing these species to coexist in the same biotope.
Centre Interfacultaire de Recherches en Océanologie - MARE
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
Researchers ; Professionals
http://hdl.handle.net/2268/67868
10.1007/s00227-009-1311-1
The original publication is available at www.springerlink.com

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