Data/hora: 10/06/2024 11:22:21

Provedor de dados: | 5
País: | France
Título: | Aspects économiques et techniques de la perliculture en Polynésie Française. Contribution à l'étude de l'alimentation de l'huître perlière Pinctada margaritifera
Autores: | Hautefeuille, Fanny.
Data: | 1994
Ano: | 1994
Palavras-chave: | Perliculture; Polynésie Française; Problèmes; Bivalve; Huître perlière; Pinctada margaritifera; Bilan énergétique; Contenu stomacal; Assimilation; Conover; Perliculture; French Polynesia; Problems; Bivalvia; Pearl oyster; Pinctada margaritifera; Energetic balance; Stomacal contents; Assimilation; Conover.
Resumo: | Cultured black pearls are now the tirst export value of French Polynesia. This fast growing activity encourage the retum of the islanders to their native islands and the revival of the economy of the archipelagoes. However, the importance of the development induced sorne technical and economical problems. New reglementations are needed to organize the market and stabilize the black pearl price, the quotation of which is falling since 1990. After the important mortalities which occured in 1985-1 986, the mother of pearl general investigation program was set up. Il aims at the study of the biology and the ecology of the mother of pearl Pinclada margaritifera. The study of the nutrition of this oyster is part of this program and will contribute to the detinition of the energetic balance of Pinctada margaritifera. Our experiments allowed us to study all the ingested particles in order to ascertain the existence of a selection. The analysis of the stomacal contents showed that : - particles are qualitatively selected with a preference for the diatom Naviculaceae Mastogloia and sponge spicules. - ail the selected diatoms are between 2 and 20µm long. The study of the assimilation rates managed with two methods showed that the Conover's, based on the ratio of ingested and rejected organic matters in the feces, is more reliable. The ratios vary between 82.3% and 42.7% for an oyster fed with Isochrisis aff. galbana. The experimental procedure should be further improved and adapted to the environ mental culture conditions of the blacklip mother of pearls.
Tipo: | Text
Idioma: | Francês

Identificador:

http://archimer.ifremer.fr/doc/00424/53540/54397.pdf

http://archimer.ifremer.fr/doc/00424/53540/

Formato: | application/pdf

Fonte:

1994 Ifremer, ISTOM

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