Feeding of the Sparid Fish Sarpa salpa in a Seagrass Ecosystem: Diet and Carbon Flux
作者： S. Havelange , G. Lepoint , P. Dauby , J.-M. Bouquegneau
DOI: 10.1111/J.1439-0485.1997.TB00443.X
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摘要: In Revellata Bay (Gulf of Calvi, Corsica, France), the sparid fish Surpa salpa L. is main macro-consumer Posidonia oceanica (L.) DELILE leaf. Stomach contents were analysed and "C/"C isotopic ratios measured in muscle potential food sources (algae, P. leaf its epiphytes) to determine their relative contribution diet. S. has an age-related mixed diet: juveniles are plankton feeders, young, sub-adults adults herbivorous, and, older individuals. higher Our results former studies carbon stocks fluxes bed have enabled estimation general impact salpu grazing on infralittoral communities: studied species consumes 24 g C. m -' . a ~ I from leaf, 4.8 epiphytes 13 epilithic algae. The net production biomass turnover that zone beenestimated be 1.2 gC .m-2. a-' 1.5 a-I, respectively.
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