Data/hora: 13/06/2024 04:22:01

Provedor de dados: | 5
País: | France
Título: | Bilan énergétique de l'huître creuse (Crassostrea gigas) durant la période de forte croissance en mai en Baie de Marennes-Oléron (France)
Autores: | Soletchnik, Patrick; Heral, Maurice; Razet, Daniel; Bougrier, Serge; Geairon, Philippe.
Data: | 1993-09-23
Ano: | 1993
Palavras-chave: | Energetic budget; Selection efficiency; Filtration; Crassostrea gigas; Budget énergétique; Sélection; Consommation; Crassostrea gigas.
Resumo: | Ecophysiological study was conducted on the japanese oyster (Crassostrea gigas) reared in Marennes-Oléron bay (France), during May 1992. Most of the somatic growth of the oyster occured during that month. The measurements were achieved from a removable laboratory stated in Le Chapus for 3 days at different tide level (coefficient of 49, 57, and 88). The food conditions were monitored through a computer with a continuous record of the turbidity during aIl the tidal cycle.  In spite of an important variation between the food conditions in mean seston load, from 13,5 to 54,6 mg/!, the available organic matter ranged from 3 to 4,9 mg/l. The rate of organic matter in the water ranged 22 % to 9 %. The organic selection efficiency was significantly higher for the condition 3 compare to the others conditions. This indicated an improvement in the sorting of the oyster at lower organic content (58 %), compare to 30 % and 42 % for the condition 1 and 2. Furthermore, the best absorption rate of the food condition 2 and 3 (coef. 57 and 88), suggested a difference in food quality, probably associated to resuspension of the organic material from the bottom. So, the scope for growth was significantly different for the three conditions in a ratio of 1, 4 and 10, respectively for the conditions 1, 2 and 3 (coeff. 49, 57 and 88). These values ranged from 50 to 500 joules/h/g for three different days in may 1992.
Tipo: | Text
Idioma: | Francês
Identificador: | http://archimer.ifremer.fr/doc/1993/acte-3068.pdf
Editor: | Counc. Meet. of the Int. Counc. for the Exploration of the Sea, [Dublin (Eire)], [23 Sep - 1 Oct 1993]
Relação: | http://archimer.ifremer.fr/doc/00000/3068/
Formato: | application/pdf