Consulta: subjectFacets:"Colour-scoring"
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Data/hora: 06/06/2024 17:57:18

Colour or no colour in the juvenile shell of the black lip pearl oyster, Pinctada margaritifera?
Provedor de dados: 5
Autores: Trinkler, Nolwenn; Le Moullac, Gilles; Cuif, Jean-pierre; Cochennec-laureau, Nathalie; Dauphin, Yannicke.
Pinctada margaritifera mollusc is cultivated in French Polynesia for the production of black pearls. For this study, the colour of juvenile samples (48 days old) was investigated in the visible range spectra (430-700 nm) using spectrophotometry. A first measurement was done with the soft parts still inside the shell (entire animal). Then, the soft parts were removed in order to do a second measurement on the growing edge of the shell. Comparison of the two measurements shows that the estimation of the living animal colour with unaided eye is strongly influenced by the colour of the soft parts. The use of the International Commission on Illumination (ISI) chromaticity diagram shows that at this growth stage, the shells are "white"; i.e. present no...
Tipo: Text
Palavras-chave: Juvenile shell; Colour-scoring; Mollusc; Pearl oyster; Pinctada margaritifera.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00078/18883/16449.pdf