Consulta: subjectFacets:"Pearl size"
Registros recuperados: 2
Data/hora: 14/06/2024 03:35:35

Donor effect on cultured pearl nacre development and shell matrix gene expression in Pinctada margaritifera reared in different field sites
Provedor de dados: 5
Autores: Ky, Chin-long; Broustal, Floriane; Koua, Manaarii Sham; Quillien, Virgile; Beliaeff, Benoit.
Understanding the respective roles played by donor and recipient pearl oysters in pearl quality determination in relation to the environment is a challenge for the pearl industry. In most Pinctada species, pearl size is mainly related to recipient oyster growth performance, but also relies to some extent on the biomineralisation activity of the pearl sac, a tissue that originates from the donor oyster mantle. We examined donor effect on pearl size in response to culture in the lagoons on Arutua and Apataki atolls. Overall nacre weight and thickness were greater in Arutua than in Apataki, but sensitivity to the environment differed between donors. Some donors were associated with significantly heavier and thicker nacre in Arutua (I group), while others had...
Tipo: Text
Palavras-chave: Biomineralisation; Environment; Pearl oyster; Pearl size; Pinctada margaritifera.
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00425/53699/54610.pdf

Quality Trait Signature at Archipelago Scale of the Cultured Pearls Produced by the Black-Lipped Pearl Oyster (Pinctada margaritifera Var. cumingi) in French Polynesia
Provedor de dados: 5
Autores: Ky, Chin-long; Okura, Retsu; Nakasai, Seiji; Devaux, Dominique.
In French Polynesia, the aquaculture of Pinctada margaritifera (Linnaeus, 1758) covers a large maritime exploitation area, spread over nearly 20 degrees latitude and longitude, with numerous pearl farms located in three archipelagos (Gambier, Society, and Tuamotu). As these archipelagos have specific seasonal temperature patterns each year, pearl oysters are subject to disparate and contrasting environmental regimes. This study aimed to examine the specificity of commercial pearl quality traits (n ¼ 2,236 samples) at the archipelago scale, in such a way as to provide preliminary data to design the most appropriate strategy for the distribution of hatchery-produced phenotypes. A large and standardized grafting experiment using the same donor phenotype was...
Tipo: Text
Palavras-chave: Pearl oyster; Pinctada margaritifera; Large-scale geographic effects; Pearl color; Pearl grade; Pearl shape; Pearl size.
Ano: 2016
URL: http://archimer.ifremer.fr/doc/00357/46798/46665.pdf