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| Haure, Joel; Baud, Jean-pierre. |
| A study on mortalities, growth and fattening of the oyster Crassostrea gigas was carried out spring with the autumn 1987 in four sites of bay of Bourgneuf. Mortalities, more important in spring, prove to be higher in the sectors North compared to the Southern sectors of bay of Bourgneuf. The performances of growth are rather weak when they are compared with other French oyster sectors. They however present a better production in the cattle-breeding areas located at the South of bay. The spring phase is marked by the formation of glucidic reserves, at the moment of the reheating of water, which is quickly transformed, in the majority of the sites, in lipids of reserves of the ovocytes, during the gamétogenèse. The state of fattening of Crassostrea gigas... |
| Tipo: Text |
Palavras-chave: Fattening; Oyster; Mortality; Growth; Bay of Bourgneuf; Crassostrea gigas; Engraissement; Huitre; Mortalité; Croissance; Baie de Bourgneuf; Crassostrea gigas. |
| Ano: 1990 |
URL: http://archimer.ifremer.fr/doc/1990/rapport-1646.pdf |
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| Barille-boyer, Anne-laure; Haure, Joel; Baud, Jean-pierre. |
| The oyster growth has been studied for a 10 year period, from 1986 to 1995, in four locations of the bay of Bourgneuf (French Atlantic Coast). The relations between oysters growth and the main molluscs stocks (cultivated oysters and wild mussels) or environmental factors (hydrobiology, currents, climatology) are analysed to understand the functioning of this shellfish ecosystem. As the water renewal time is about two months, primary production is essentially autochtonal. Phytoplankton development is controlled by the nutrients brought by the river Loire. An important part of the microalgac is composed by the microphytobenthos resuspended by west wind. High seston concentrations, measured on the North of the bay (150 mg/1 as an average), have a negative... |
| Tipo: Text |
Palavras-chave: Ecosystème conchylicole; Modèle global de croissance; Baie de Bourgneuf; Crassostrea gigas; Ecosystem; Shellfish culture; Global growth model; Bay of Bourgneuf; Crassostrea gigas. |
| Ano: 1997 |
URL: http://archimer.ifremer.fr/doc/1997/rapport-1633.pdf |
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