FN Archimer Export Format PT J TI Low energy cost for cultured pearl formation in grafted chimeric Pinctada margaritifera BT AF LE MOULLAC, Gilles SOYEZ, Claude KY, Chin-Long AS 1:1;2:1;3:1; FF 1:PDG-RBE-RMPF;2:PDG-RBE-RMPF;3:PDG-RBE-RMPF; C1 IFREMER, Ctr Pacifique, UMR Ecosyst Insulaires Oceaniens EIO 241, Labex Corail, BP 49, F-98719 Tahiti, French Polynesi, France. C2 IFREMER, FRANCE SI TAHITI SE PDG-RBE-RMPF UM EIO IN WOS Ifremer jusqu'en 2018 DOAJ IF 4.011 TC 2 UR https://archimer.ifremer.fr/doc/00437/54861/56350.pdf https://archimer.ifremer.fr/doc/00437/54861/56351.pdf LA English DT Article AB The pearl oyster is one of the rare animal models that support two distinct genomes,  through the surgical graft process operated for culture pearl production. This grafted  organism is assimilated to a chimera whose physiological functioning remains poorly known.  The question of the energy expenditure comparison between chimera and non-chimera  animals arises. To answer this question, grafted and non-grafted pearl oysters were  evaluated for their energetic needs by the indirect calorimetry method. This method made it  possible to measure the energy expenditure based on the respiration rate (RR)  measurement, reflecting the basal metabolism. The results showed that the RR values for  grafted and non-grafted pearl oysters were not significantly different (p < 0.05). The  estimated cost of pearl calcification including CaCO3 and proteins synthesis was 0.237 ±  0.064 J h-1, representing 0.64 % of the total energy expenditure of grafted pearl oysters. This  study made it possible, for the first time, to see the energy cost of cultured pearl formation  in P. margaritifera and the little impact in the energetic metabolism of the chimera  organism. PY 2018 PD MAY SO Scientific Reports SN 2045-2322 PU Nature Publishing Group VL 8 UT 000431955100025 DI 10.1038/s41598-018-25360-5 ID 54861 ER EF