Article (Scientific journals)
Feeding of the sparid fish Sarpa salpa in a seagrass ecosystem: Diet and carbon flux
Havelange, S.; Lepoint, Gilles; Dauby, Patrick et al.
1997In Marine Ecology, 18 (4), p. 289-297
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Keywords :
Sarpa salpa; Posidonia oceanica; feeding ecology; stable carbon isotopes
Abstract :
[en] In Revellata Bay (Gulf of Calvi, Corsica, France), the sparid fish Sarpa salpa L. is the main macro-consumer of Posidonia oceanica (L.) DELILE leaf. Stomach contents were analysed and C-13/C-12 isotopic ratios were measured in fish muscle and potential food sources (algae, P. oceanica leaf and its epiphytes) to determine their relative contribution to the fish diet. S. salpa has an age-related mixed diet: juveniles are plankton feeders, young, sub-adults and adults are herbivorous, and, the older the individuals, the higher the relative contribution of P. oceanica to the diet. Our results and former studies of carbon stocks and fluxes in the P. oceanica bed of Revellata Bay have enabled an estimation of the general impact of S. salpa grazing on infralittoral communities: the studied species consumes 24 g C.m-2.a(-1) from P. oceanica leaf, 4.8 from epiphytes and 13 from epilithic algae. The fish net production and biomass turnover in that zone have been estimated to be 1.2 g C.m(-2).a(-1) and 1.5 a(-1), respectively.
Research center :
MARE - Centre Interfacultaire de Recherches en Océanologie - ULiège
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
Havelange, S.
Lepoint, Gilles  ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Océanologie
Dauby, Patrick ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Systématique et diversité animale
Bouquegneau, Jean-Marie ;  Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Océanologie
Language :
English
Title :
Feeding of the sparid fish Sarpa salpa in a seagrass ecosystem: Diet and carbon flux
Publication date :
1997
Journal title :
Marine Ecology
ISSN :
0173-9565
eISSN :
1439-0485
Publisher :
Blackwell Publishing
Volume :
18
Issue :
4
Pages :
289-297
Peer reviewed :
Peer Reviewed verified by ORBi
Name of the research project :
Carbon Cycle in the Calvi Bay
Funders :
CE - Commission Européenne [BE]
FRFC - Fonds de la Recherche Fondamentale Collective [BE]
Available on ORBi :
since 22 October 2009

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