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Aquaculture extensive et repeuplement ArchiMer
Buestel, Dominique; Nicolas, R.; Morize, E.; Rohan, R.; Latrouite, Daniel; Le Borgne, Y.; Cochard, Jean-claude; Flassch, Jean-pierre; Uno, Yutaka; Audouin, Jacques; Legall, J.y.; Jezequel, M.; Lorec, J.; Henocque, Yves; Reveche, C.; Girin, Michel; Laurec, Alain; Herry, P..
L'aquaculture extensive et le repeuplement sont deux modes d'exploitation des ressources halieutiques qui ne font appel, une fois les juvéniles produits, ni à un apport de nourriture artificielle, ni à un contrôle continu de la part de l'exploitant, mais dépendent par contre de la productivité du milieu marin, Cette approche repose sur l'idée que le principal facteur limitant d'une population naturelle est le faible nombre de survivants après les premiers stades, et que l'on peut par alevinage, aménagement du milieu ou autres techniques, augmenter la production d'une espèce exploitable, Le but de ces journées d'étude est de faire le point des connaissances sur ces sujets, à l'intention des scientifiques mais aussi des utilisateurs, Il a paru souhaitable de...
Tipo: Text
Ano: 1979 URL: http://archimer.ifremer.fr/doc/00018/12941/9907.pdf
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The digestive enzymes amylase and trypsin during the development of Artemia : effect of food conditions ArchiMer
Samain, J. F.; Moal, J.; Daniel, J. Y.; Le Coz, J. R.; Jezequel, M..
Activities of the digestive enzymes amylase and trypsin have been studied during development of Artemia (San Francisco, USA) cultured at different concentrations of phytoplankton (Tetraselmis suecica). The synthesis of the two enzymes varies independently throughout the development. Activity levels are controlled by food levels as well as by food composition. To obtain an optimum assimilation yield at a given food level, an adaptive mechanism would involve 1) modulation of ingestion rates based on physicochemical properties of food particles and 2) regulation of synthesis of digestive enzymes by ingestion and chemical composition of the food. Rates of ingestion and assimilation Vary more during development than does the yield. Maximum yield is achieved...
Tipo: Text Palavras-chave: Histoire Ifremer.
Ano: 1980 URL: http://archimer.ifremer.fr/doc/1980/publication-5410.pdf
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