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	Provedor de dados ArchiMer (3) Autor Bayne, Bl (1) Bougrier, Serge (1) Fabioux, Caroline (1) Hawkins, Ajs (1) Heral, Maurice (1) Le Moullac, Gilles (1) Smith, Rfm (1) Mais... Palavra-chave Régulation (3) Regulation (2) Anoxie (1) Bivalve (1) Cellules germinales (1) Comportement alimentaire (1) Controlled reproduction (1) Crassostrea (1) Croissance. (1) Enzyme (1) Expression génique (1) Feeding behaviour (1) Gametogenesis (1) Gamétogenèse (1) Germ cells (1) Maximum growth rate (1) Mytilus edulis (1) Oyster vasa like gene (1) Reproduction contrôlée (1) Mais... Tipo do documento Text (3) Ano 2008 (1) 2004 (1) 1997 (1) País France (3) Idioma Francês (2) Inglês (1)		Ordenar por:  Relevância Autor Título Ano Registros recuperados: 3 Primeira ... 1 ... Última Adaptation du métabolisme respiratoire de l'huître creuse Crassostrea gigas ArchiMer Le Moullac, Gilles. Summer mortality of the oyster result from the interaction of many factors. A respiratory assumption proposes a link between the supposed causes of the energy state, the cultivation methods and the medium. This work is focused towards the search for specific metabolic markers of environmental stresses. The cDNA of genes coding for PK and PEPCK were cloned and sequenced in order to detect their regulation level. The sediment nearness affects the state of energy reserves, the metabolic pathways of energy production implying a regulation of the PK. Face to the dissolved oxygen decline, oysters were oxyregulator but with a low regulation ability. In hypoxia, glycolysis was slowed down. PK activity was inhibited resulting from an increase in alanine sensitivity... Tipo: Text Palavras-chave: Régulation; Enzyme; Expression génique; Anoxie; Bivalve. Ano: 2008 URL: http://archimer.ifremer.fr/doc/2008/these-4315.pdf Manipulation of dietary conditions for maximal growth in mussels, Mytilus edulis, from the Marennes-Oléron Bay, France ArchiMer Hawkins, Ajs; Smith, Rfm; Bougrier, Serge; Bayne, Bl; Heral, Maurice. Results are presented from laboratory-based experiments in which we investigated short-term responses of Mytilus edulis L. to experimental changes in the amount and composition of suspended seston. Working with large quantities of cultured algae, we have studied feeding behaviour over ranges of food availability and quality that ex tend weil beyond earlier limits. Findings confirm the ability of mussels to selectively reject inorganic particles as pseudofaeces prior to ingestion, thereby enriching the organic content of ingested matter by 30% more than the organic content of natural filtered seston. Our findings also establish acclimation both of selective and absorptive processes, indicating that the extent to which growth of M. edulis can be stimulated... Tipo: Text Palavras-chave: Mytilus edulis; Comportement alimentaire; Régulation; Croissance.; Mytilus edulis; Feeding behaviour; Regulation; Maximum growth rate. Ano: 1997 URL: http://archimer.ifremer.fr/doc/00015/12604/9482.pdf Origine et développement des cellules germinales chez l'huître creuse Crassostrea gigas : Intérêt pour le contrôle de la reproduction en écloserie. ArchiMer Fabioux, Caroline. A comprehensive knowledge of Crassostrea gigas oyster reproduction processes is essential to optimize controlled reproduction in hatchery. This study aimed to determine the origin and the mechanisms of annual renewal of germ cells, still unknown in oysters, and the influence of temperature and photoperiod parameters on the regulation of the reproductive cycle. We characterized an orthologue of the vasa gene, the Oyvlg (Oyster vasa-like gene), the first germ cell specific marker isolated in molluscs. This marker was used to study C. gigas germline development. Oyster germ cells appeared specified during early development from mesentoblast 4d, as primordial germ cells (PGCs) determined by maternal cytoplasmic determinants, including Oyvlg mRNA. In adult... Tipo: Text Palavras-chave: Controlled reproduction; Regulation; Oyster vasa like gene; Gametogenesis; Germ cells; Crassostrea; Reproduction contrôlée; Régulation; Oyster vasa like gene; Gamétogenèse; Cellules germinales; Crassostrea. Ano: 2004 URL: http://archimer.ifremer.fr/doc/2004/these-1380.pdf Registros recuperados: 3 Primeira ... 1 ... Última

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