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Evolution divergente de cultures phytoplanctoniques marines en relation avec la qualité des enrichissements ArchiMer
Divanach, P.; Sube, J..
Four marine phytoplanctonic cultures from natural inoculum of Nannodito sp. have been submitted to different fertilizers in identical light and tem­perature conditions. The composition of enrichments has been studied to introduce Nitrogen as comparative factor. One tank without nutrients and three enriched cultures, the first only with sodium nitrate, the second with "Conway medium" and the last in which nutri­ents were provided by convenient dilution of "foam", have been followed for phy­sical, chemical, biological parameters during three months. Temperature, pH, dis­solved oxygen, optical density, particulate matters, Organic Carbon, Nitrogen, Phos phorus, Calcium, Magnesium, Sodium, Potassium, metal traces and biological parame­ters were analysed...
Tipo: Text Palavras-chave: Enrichissements; Recyclage; Écume; Phytoplancton; Déchets; Aquaculture; Enrichments; Recycling; Foam; Phytoplankton; Wastes; Aquaculture.
Ano: 1979 URL: http://archimer.ifremer.fr/doc/00305/41662/42780.pdf
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Rearing techniques for difficult marine fish larvae OMA
Dhert, Ph.; Divanach, P.; Kentouri, M.; Sorgeloos, P..
In finfish mariculture, seed production and larval rearing still form the bottleneck for all ongrowing operations and are considered as the main limiting factor for industrial development. Through trial and error more than through biological understanding two opposite hatchery techniques have been developed which surprisingly control a multiparametric combination of different factors but aspire to the same objective of conformity with wild standards and the cost-effective production of larvae. In intensive aquaculture, the rearing technique is characterised by high initial larval densities in small tanks under strict hydraulic, thermic, and nutritional conditions. The light conditions are artificial. The temperature and quality of water are controlled. The...
Tipo: Info:eu-repo/semantics/article Palavras-chave: Aquaculture techniques; Environmental conditions; Fish eggs; Fish larvae; Food organisms; Industrial production; Marine fish; Rearing; Seed (aquaculture); Artemia; Brachionus plicatilis; Pisces [Fish].
Ano: 1998 URL: http://www.vliz.be/nl/open-marien-archief?module=ref&refid=301
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Recyclage de déchets d'aquaculture marine - Caractéristique d'un effluent de pisciculture : l'écume ArchiMer
Divanach, P.; Sube, J..
Previously to its use as culturing medium for algae, we have studied the various characteristics of the sewage extracted from marine fish rearing ponds, through a purificating system called "foamer". Qualitatively, this sewage differs from the sea water which produced it on various points : It is richer than the water in Organic Carbon, Organic Nitrogen, Ammonia, particulate matters, phosphorus and varied metals. However the concentration factors are not constant and they change in time. This sewage is toxic for some group of animals and this toxicity varies with the concentration but also the age of the product. Finally, it is eutrophicant and this richness enables to the growth of algae for long periods but the boundary between toxicity and eutrophy Is...
Tipo: Text Palavras-chave: Aquaculture; Recyclage; Déchets; Écume; Aquaculture; Recycling; Wastes; Foams.
Ano: 1979 URL: http://archimer.ifremer.fr/doc/00305/41661/40870.pdf
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The influence of two temperatures maintained constant during incubation and larval life on the early myotomal red muscle growth and activity of European sea bass (Dicentrarchus labrax L.) Inra
Alami-Durante, H.; Olhasque, V.; Ashton, C.; Stickland, N.; Kentouri, M.; Divanach, P..
Tipo: Conference Paper Palavras-chave: FISH; SKELETAL MUSCLE; HYPERPLASIA; HYPERTROPHY; ENZYME ACTIVITY.
Ano: 2006 URL: http://www.prodinra.inra.fr/prodinra/pinra/doc.xsp?id=PROD20073933100f&uri=/notices/prodinra1/2008/03/
Registros recuperados: 4
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