In the Mediterranean Sea, the vermetid Dendropoma petraeum (Monterosato, 1884) forms highly biodiversereefs that have received increasing attention in recent years although very little is known aboutthe food habit of this species. The main goal of this study was to describe the trophic role of planktonicand benthic food sources for D. petraeum. Specimens from three morphological zones of the reef (inneredge, cuvette and outer edge) at two sites with different wave exposure along the north-western coast ofSicily (Italy; western Mediterranean) were compared for d13C and d15N. Isotopic determinations werealso carried out on potential food sources identified in epilithon, reef macroalgae and suspendedparticulate organic matter. d13C for D. petraeum showed significantly more depleted values in the moreexposed conditions (i.e. the site with higher wave exposure and outer edge of the reef), while d15N didnot differ appreciably. These results suggest greater exploitation of benthic sources in the sheltered thanin the exposed site and reveal diet shift and trophic flexibility at a small spatial scale for the reef-formerD. petraeum.
|Numero di pagine||6|
|Rivista||Estuarine, Coastal and Shelf Science|
|Stato di pubblicazione||Published - 2012|
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