Data/hora: 06/06/2024 06:40:33

Provedor de dados: 	5	
País: 	France	
Título: 	Yes, it turns: experimental evidence of pearl rotation during its formation	
Autores: 	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.	
Data: 	2015-07	
Ano: 	2015	
Palavras-chave: 	Pearl oyster; Pearl rotation; Biomineralization.	
Resumo: 	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.	
Tipo: 	Text	
Idioma: 	Inglês	
Identificador: 	http://archimer.ifremer.fr/doc/00275/38598/37127.pdf

DOI:10.1098/rsos.150144

http://archimer.ifremer.fr/doc/00275/38598/	
Editor: 	Royal Soc	
Formato: 	application/pdf	
Fonte: 	Royal Society Open Science (2054-5703) (Royal Soc), 2015-07 , Vol. 2 , N. 7 , P. 150144	
Fonte: 	2015 The Authors. Published by the Royal Society under the terms of the Creative Commons Attribution License http://creativecommons.org/licenses/by/4.0/, which permits unrestricted use, provided the original author and source are credited.

info:eu-repo/semantics/openAccess

restricted use