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| Registros recuperados: 43 | |
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| Ky, Chin-long; Nakasai, Seiji; Parrad, Sophie; Broustal, Floriane; Devaux, Dominique; Louis, Patricia. |
| Cultured pearl production from Pinctada margaritifera uses the biomineralization capacities of the mantle graft, the saibo, which is usually obtained from only the middle mantle section of the donor oyster. To evaluate the potential for using other parts of the mantle, this study explores and describes the cultured pearl quality traits, pearl size, shape, surface defects and colour parameters obtained with saibo from the entire length of the mantle, comprising the four following sections: 1) posterior, 2) connection with the gills, 3) middle, (the section usually used commercially), and 4) anterior. Rates of nucleus retention and oyster mortality were also recorded and compared between sections. For this, two experimental grafts were designed and conducted... |
| Tipo: Text |
Palavras-chave: Pinctada margaritifera; Pearl oyster; Pearl quality traits; Saibo position; Mantle tissue; Phenotype. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00439/55030/56461.pdf |
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| 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. |
| 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... |
| Tipo: Text |
Palavras-chave: Pearl oyster; Pearl rotation; Biomineralization. |
| Ano: 2015 |
URL: http://archimer.ifremer.fr/doc/00275/38598/37127.pdf |
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| Registros recuperados: 43 | |
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