FN Archimer Export Format PT J TI Assimilation of shrimp farm sediment by Holothuria scabra : a coupled fatty acid and stable isotope approach BT AF Mathieu-Resuge, Margaux Le Grand, Fabienne Schaal, Gauthier Kraffe, Edouard Lorrain, Anne Letourneur, Yves Lemonnier, Hugues Benoît, Julie Hochard, Sébastien AS 1:1;2:5;3:1;4:5;5:6;6:2;7:3;8:4;9:4; FF 1:;2:;3:;4:;5:;6:;7:PDG-RBE-LEADNC;8:;9:; C1 Laboratoire des Sciences de l'Environnement Marin, UMR 6539 UBO/CNRS/IRD/IFREMER, Rue Dumont d'Urville, 29280 Plouzané, France Université de la Nouvelle-Calédonie, UMR Entropie and LabEx Corail, BP R4, 98851 Nouméa Cedex, New Caledonia Institut Français de Recherche pour l'Exploitation de la Mer. Unité Lagons, Ecosystèmes et Aquaculture Durable en Nouvelle Calédonie, BP 2059, 98846 Nouméa Cedex, New Caledonia Agence de Développement Economique de la Nouvelle-Calédonie − ZoNéCo, BP 2384, 98846 Nouméa Cedex, New Caledonia Laboratoire des Sciences de l'Environnement Marin, UMR 6539 UBO/CNRS/IRD/IFREMER, Rue Dumont d'Urville, 29280 Plouzané, France Laboratoire des Sciences de l'Environnement Marin, UMR 6539 UBO/CNRS/IRD/IFREMER, Rue Dumont d'Urville, 29280 Plouzané, France C2 UBO, FRANCE UNIV NOUVELLE CALEDONIE, FRANCE IFREMER, FRANCE ADECAL TECHNOPOLE, FRANCE CNRS, FRANCE IRD, FRANCE SI NOUMEA SE PDG-RBE-LEADNC UM LEMAR ENTROPIE IN WOS Ifremer UMR WOS Cotutelle UMR copubli-france copubli-p187 copubli-univ-france IF 1.885 TC 9 UR https://archimer.ifremer.fr/doc/00624/73589/73023.pdf LA English DT Article DE ;Fatty acids;stable isotopes;rotational co-culture;shrimp-farming;Holothurid AB Deposit-feeding sea cucumbers are efficient nutrient recyclers and have the potential to contribute to the limitation of organic matter load in polyculture or integrated aquaculture systems. Assessing how they assimilate organic matter originating from other farmed species is therefore important for the development of such multi-species farming systems. Here, a coupled stable isotope − fatty acid approach was used to characterize the assimilation of organic matter from shrimp (Penaeus stylirostris) farming by Holothuria scabra in an experimental culture system. H. scabra were reared in mesocosms on shrimp farming-originating sediment with and without additional food sources (maize and fish meals). Although fatty acid results did indicate that shrimp-farming sediment was assimilated by holothurids, we found no evidence of maize waste and fish meal contribution to H. scabra organic carbon (no effect on δ13C, no accumulation of meal-specific fatty acids). However, a strong effect of fish meal on H. scabra δ15N was observed, suggesting that this additional food source could represent an alternative source of nitrogen for holothurids. Finally, this study supports the culture of H. scabra as a perspective to reduce sedimentary organic matter excess associated with shrimp farms, and suggest that the addition of selected food sources might contribute to increasing the content in some nitrogen organic compounds in holothurid tissues. PY 2020 PD APR SO Aquatic Living Resources SN 0990-7440 PU EDP Sciences VL 33 IS 3 UT 000529525800001 DI 10.1051/alr/2020004 ID 73589 ER EF