FN Archimer Export Format PT J TI Yes, it turns: experimental evidence of pearl rotation during its formation BT AF GUEGUEN, Yannick CZORLICH, Yann MASTAIL, Max LE TOHIC, Bruno DEFAY, Didier LYONNARD, Pierre MARIGLIANO, Damien GAUTHIER, Jean-Pierre BARI, Hubert LO, Cedrik CHABRIER, Sebastien LE MOULLAC, Gilles AS 1:1,2;2:1;3:3;4:4;5:4;6:1;7:1;8:5;9:6;10:7;11:8;12:1; FF 1:PDG-RBE-IHPE;2:PDG-RBE-RMPF;3:PDG-DCN-SGCN-STLNA;4:;5:;6:PDG-DCOP-SGCOP-IMAPF;7:;8:;9:;10:;11:;12:PDG-RBE-RMPF; C1 IFREMER, UMR EIO 241, UPF ILM IRD, Labex Corail, BP 7004, Taravao 98719, Fr Polynesia. Univ Montpellier, CNRS, IFREMER, UMR IHPE 5244 ,UPVD, F-34095 Montpellier, France. IFREMER, Ctr Atlantique, F-44311 Nantes 03, France. Vega Ind, F-94200 Ivry, France. Lab ICP TEXINFINE, F-69006 Lyon, France. Qatar Museums, Pearl & Jewellery Museum, Doha, Qatar. Direct Ressources Marines & Min, Papeete 98713, Tahiti, Fr Polynesia. Univ Polynesie Francaise, Lab GEPASUD, Faaa 98702, Tahiti, Fr Polynesia. C2 IFREMER, FRANCE UNIV MONTPELLIER, FRANCE IFREMER, FRANCE VEGA IND, FRANCE LAB ICP TEXINFINE, FRANCE QATAR MUSEUMS, QATAR DIRECT RESSOURCES MARINES & MINIERES, FRANCE UNIV POLYNESIE FRANCAISE, FRANCE SI MONTPELLIER TAHITI NANTES SE PDG-RBE-IHPE PDG-RBE-RMPF PDG-DCN-SGCN-STLNA PDG-DCOP-SGCOP-IMAPF UM IHPE EIO IN WOS Ifremer jusqu'en 2018 copubli-france copubli-univ-france copubli-int-hors-europe IF 2.243 TC 11 UR https://archimer.ifremer.fr/doc/00275/38598/37127.pdf LA English DT Article DE ;pearl oyster;pearl rotation;biomineralization AB Cultured pearls are human creations formed by inserting a nucleus and a small piece of mantle tissue into a living shelled mollusc, usually a pearl oyster. Although many pearl observations intuitively suggest a possible rotation of the nucleated pearl inside the oyster, no experimental demonstration of such a movement has ever been done. This can be explained by the difficulty of observation of such a phenomenon in the tissues of a living animal. To investigate this question of pearl rotation, a magnetometer system was specifically engineered to register magnetic field variations with magnetic sensors from movements of a magnetic nucleus inserted in the pearl oyster. We demonstrated that a continuous movement of the nucleus inside the oyster starts after a minimum of 40 days post-grafting and continues until the pearl harvest. We measured a mean angular speed of 1.27° min−1 calculated for four different oysters. Rotation variability was observed among oysters and may be correlated to pearl shape and defects. Nature's ability to generate so amazingly complex structures like a pearl has delivered one of its secrets. PY 2015 PD JUN SO Royal Society Open Science SN 2054-5703 PU Royal Soc VL 2 IS 7 UT 000377966100019 DI 10.1098/rsos.150144 ID 38598 ER EF