Consulta: subjectFacets:"Emersion"
Registros recuperados: 4
Data/hora: 14/06/2024 19:28:08

Responses and adaptations of the adenylate energy charge and digestive enzyme activities to tidal emersion of Crassostrea gigas populations in Marennes-Oleron Bay
Provedor de dados: 5
Autores: Moal, Jeanne; Samain, Jean-francois; Le Coz, Jean-rene; Daniel, Jean-yves.
Crassostrea gigas oysters cultivated in Marennes-Oleron Bay (France), face seasonal variations in the environment: salinity, turbidity, phytoplanktonic production, and the tidal rhythm of emersion. The oysters are maintained at different depths to reduce competition for space (e.g. by settlement of mussel spat). The physiological responses of two groups of oysters to different periods of emersion were studied using a seasonal sampling strategy: one group was on a flat part of the area, and the effect of emersion was studied in a short time survey (less than three hours emersion at low tide); the other was located in a very narrow place with a steep slope. This group was subdivided into three, according to bathymetric position, to study the long term effect...
Tipo: Text
Palavras-chave: Crassostrea gigas; Physiology; Emersion; AEC; Digestive enzimes; Marennes-Oleron Bay.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/00038/14885/12208.pdf

Réponses et adaptations de la charge énergétique adénylique et l'activité enzymatique digestive à l'emersion chez Crassostrea gigas
Provedor de dados: 5
Autores: Moal, Jeanne; Samain, Jean-francois.
The effect of tidal emergence on the adenylate energy charge value was studied in Crassostrea gigas oysters in Marennes-Oleron Bay. The shot-term AEC responses to aerial exposure differed according to the period of the year. However, on a long-term basis, osters from three bathymetric positions exhibited the same AEC value, but had a different growth rate. The amylase increase observed for the most emerged oysters may play a role in the maintenance of energy equilibrium.
Tipo: Text
Palavras-chave: Charge énergétique; Amylase; Emersion; Huîtres; Crassostrea gigas; Cycle de marée; ATP; Adenylic energy charge; Amylase; Emersion; Oysters; Crassostrea gigas; Tidal cycle.
Ano: 1988
URL: http://archimer.ifremer.fr/doc/00022/13285/10331.pdf

Le stress du passage en mer de post-larves de coquilles Saint-Jacques (Pecten maximus) issues d'écloserie
Provedor de dados: 5
Autores: Philippe, Régis.
Le transfert en mer de post-larves de coquille Saint-Jacques depuis la nurserie, à terre, jusqu'à la station de prégrossissement, en mer, provoque de faibles survies : 20 à 50 % L'étude du passage en mer montre 2 stress élémentaires principaux : la dé-fixation des post-larves et leur émersion pendant le transport (l'effet des chocs thermiques n'a pas été étudié ici). Quelques comparaisons de lots de post-larves dé-fixées ou émergées, montrent que la cause principale de mortalité serait la dé-fixation. La dernière partie de cette étude aborde des essais de transfert sans dé-fixation, à l'aide de supports-collecteurs immergés pendant l'élevage post-larvaire. Les survies au passage en mer apparaissent beaucoup plus satisfaisantes (64 à 100 % dans la plupart...
Tipo: Text
Palavras-chave: Coquille Saint-Jacques; Pecten maximus; Naissain; Passage en mer; Stress; Dé-fixation; Emersion; Collecteurs.
Ano: 1991
URL: http://archimer.ifremer.fr/doc/00422/53377/54221.pdf

Comparison of growth of mussel, Mytilus edulis, on longline, pole and bottom culture sites in the Pertuis Breton, France
Provedor de dados: 5
Autores: Garen, Pierre; Robert, Stephane; Bougrier, Serge.
Growth of the mussel, Mytilus edulis, was compared for the first time under three culture regimes, longline located in open sea, pole and on-bottom both situated on an intertidal flat, in the Pertuis Breton, on the Atlantic coastline of France. Mussel sampling was performed on a monthly basis over 1 year while monitoring of hydrobiological parameters was conducted on a biweekly basis. Fluctuation of environmental parameters showed a similar pattern on both sea and shore locations with generally higher concentration levels for the intertidal area compared with the open sea, i.e. 4.07 and 3.17 mg 1(-1) for particulate organic matter, 3.16 and 2 mug 1(-1) for chlorophyll-a, 58.43 and 38.72 mg 1(-1) for inorganic-N, respectively. A clear seasonal growth...
Tipo: Text
Palavras-chave: Condition index; Emersion; Food resource; Water quality; Growth; Mytilus edulis.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/publication-581.pdf