Diet composition of the bathyal crabs, Chaceon mediterraneus Manning & Holthuis and geryon longipes A. Milne-Edwards (Decapoda, Geryonidae) collected at different depths in the eastern Mediterranean

摘要: A large number of specimens Geryon longipes and Chaceon mediterraneus were collected by a series baited traps deployed at 11 stations in the Cretan sea Levantine basin, covering depth range 1511 to 3080 m. The two crab species not trapped together any traps, however.Stomach content analysis both revealed rather wide variety prey categories (excluding bait), such as Ascidiacea, Alcyonaria, Decapoda, Mysidacea, Amphipoda, Polychaeta. C. showed highly diversified diet with Crustacea, Ascidiacea being most dominant categories. variability G. is less than that mediterraneus, but Alcyonaria appeared again be abundant However, compositions these appear different, only few common. vacuity coefficient value was lower longipes, which seems have feeding activity.Both seem exploit food resources. This makes living possible bathyal zone oligotrophic eastern Mediterranean. De nombreux de et ont ete peches grâce une serie pieges appât places dans stations, la mer Crete le bassin Levantin, profondeur variant entre Cependant, ces deux especes crabes n'ont jamais trouvees ensemble aucun des utilises.L'analyse contenus stomacaux revele variete plutot grande types proies (a part l'appât), telles qu'Ascidiacea, Amphipoda montre un regime tres diversifie, avec comme dominantes Ascidiacea. La variabilite du est moindre que celle mais les apparaissent encore etre plus abondantes. composition regimes alimentaires differente, seulement quelques en commun. valeur vacuite chez qui semble avoir activite nutritionnelle moindre.Les semblent exploiter ressources nutritives. Ceci leur permet vivre toutes bathyale Mediterranee orientale, pourtant fortement oligotrophe.