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| Registros recuperados: 102 | |
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| Pascual, Marcela; Martin, Anne-genevieve; Zampatti, Eduardo; Coatanea, Denis; Defossez, Jérôme; Robert, Rene. |
| Because of diseases affecting fIat oyster Ostrea edulis, acclimatization of the Argentina oyster Ostrea puelchana has been tested in 1989-90 in five French oyster farming sites. Following ICES recommendations , hatchery produced juveniles, from parents imported from Argentina, were transferred to experimental si tes in summer 1989. Very high mortalities occurred, reaching 46 to 98% in March-Apri1 1990. They continued later on, resulting in the end of experiments in March 1991. The growth of surviving oysters was relatively poor in comparison of the local species. Parasites Marteilia refringens and Bonamia ostreae have been detected but at rates inadequate ta explain the high mortalities. AlI these results lead not to retain this species for breeding on... |
| Tipo: Text |
Palavras-chave: Huître; Ostrea puelchana; Parasitologie; Marteilia refringens; Oysters; Ostrea puelchana; Parasitology; Marteilia refringens. |
| Ano: 1991 |
URL: http://archimer.ifremer.fr/doc/00018/12946/9916.pdf |
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| Rico Villa, Benjamin; Pouvreau, Stephane; Robert, Rene. |
| Ingestion, growth and metamorphosis of Pacific oyster, Crassostrea gigas, larvae were studied under controlled conditions of food density and temperature using a combination of a flow-through rearing system and a hydrobiological monitoring device. In a first experiment larvae were exposed to three different phytoplankton densities (12, 20 and 40 cells μl-1) while in a second trial larvae were reared at five different temperatures (17, 22, 25, 27 and 32°C). Both food concentration and temperature significantly affected the larval physiology throughout the entire development from D-veliger to young spat. Larvae survived over a wide range of both environmental parameters with high survival at the end of experiments. The feeding functional response... |
| Tipo: Text |
Palavras-chave: Temperature; Food; Growth; Ecophysiology; Bivalve larvae; Crassostrea gigas. |
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/2008/publication-4747.pdf |
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| Marchetti, Julie; Bougaran, Gael; Jauffrais, Thierry; Lefebvre, Sebastien; Rouxel, Catherine; Saint-jean, Bruno; Lukomska, Ewa; Robert, Rene; Cadoret, Jean-paul. |
| In aquaculture, particularly in bivalve hatcheries, the biochemical composition of algal diets has a strong influence on larval and post-larval development. Biochemical composition is known to be related to culture conditions, among which light represents a major source of variation. The effects of blue light on biochemical composition and photosynthetic rate of Isochrysis sp. (T-iso) CCAP 927/14 were assessed in chemostat at a single irradiance (300 μmol photons m−2 s−1) and compared with white light. Two different dilution (renewal) rates were also tested: 0.7 and 0.2 d−1. Relative carbohydrate content was lower under blue light than under white light at both dilution rates, whereas chlorophyll a and photosynthesis activity were higher. In contrast,... |
| Tipo: Text |
Palavras-chave: Isochrysis; Blue light; Photosynthesis; Proximate composition; Chemostat. |
| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00085/19599/17237.pdf |
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| Thouard, Emmanuel; Buchet, Vincent; Cahu, Chantal; Coeurdacier, Jean-luc; Elie, Pierre; Gerard, André; Hussenot, Jerome; Legendre, Marc; Prou, Jean; Robert, Rene. |
| Les missions réalisées fin 2004 et début 2005 ont permis de faire le point sur les coopérations potentielles entre l'INSTM et l'IFREMER. Un certain nombre de domaines de coopération et de sujets de collaboration ont été identifiés et se sont traduits (ou se traduiront) par des actions de coopération (missions, stages, formations) soutenues financièrement par le SCAC de l'Ambassade de France à Tunis. La coopération entre l'IFREMER et l'INSTM dans le domaine de l'aquaculture a été très active dans le cadre du programme« Aquaculture 2001 » (1997-2001). Depuis cette période les relations se sont limitées à la préparation du programme DORAD qui était la suite d' «Aquaculture 2001 » . En l'absence du financement FSP sollicité pour DORAD, les deux organismes ont... |
| Tipo: Text |
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| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/00305/41648/40857.pdf |
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| Brizard, Raphael; Bernardi, Maud; Boudry, Pierre; Haffray, Pierrick; Labbe, Catherine; Maisse, Gérard; Maurouard, Elise; Robert, Rene; Roger, Jean-luc. |
| Afin d'appuyer la filière ostréicole, les programmes de recherche actuels visent à proposer des méthodes d'amélioration génétique des rendements et de la qualité du produit (sélection, polyploïdisation). A l'image des productions animales terrestres, la continuation de ces travaux et la diffusion du progrès génétique dans la filière seraient grandement facilitée par le développement de techniques de conservation des génotypes sélectionnés. La cryopréservation qui est utilisée fréquemment dans les programmes de sélection des animaux terrestres et des espèces piscicoles n'est toujours pas disponible pour les mollusques bivalves. Cette technique présente les atouts qui peuvent pourraient satisfaire les différents acteurs de la filière ostréicole car elle... |
| Tipo: Text |
Palavras-chave: Congélation sperme; Standardisation; Procédure; Ecloserie expérimentale; Fécondation; Cryopréservation; Sperme cryopréservé. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/00049/16056/13516.pdf |
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| Robert, Rene; Pichot, Yves; Comps, Michel. |
| From 1988 to 1989, a study has been conducted pertaining to the growth of the flat oyster Ostrea edulis, as well as Marteilia refringens and Bonamia ostreae outbreaks. Commercial mono specific farming (flat oysters), with low density or mixed (flat and hollow oysters) along with higher density, has been taking place in the Arcachon basin oceanographic sectors, where main hydrobiological parameters were acquired simultaneously. The excellent growth of the flat oyster was witnessed in mono specific farming. However this growth was average in mixed farming, probably due to higher total oyster density and interspecies competition. Regardless of the type of farming, Marteilia refringens infection was very quick and may have been related to climatic bay water... |
| Tipo: Text |
Palavras-chave: Basin of Arcachon; Pathology; Bonamia ostreae; Marteilia refringens; Growth; Ostrea edulis; Bassin d'Arcachon; Pathologie; Bonamia ostreae; Marteilia refringens; Croissance; Ostrea edulis. |
| Ano: 1990 |
URL: http://archimer.ifremer.fr/doc/1990/rapport-1592.pdf |
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| Gonzalez, Ricardo; Mingant, Christian; Petton, Bruno; Robert, Rene. |
| In contrast with the Japanese oyster Crassostrea gigas and the Manila clam Ruditapes philippinarum, Ostrea edulis seed production in the hatchery has been reported to be erratic, with sudden and unexplained larval and post-metamorphosis mortalities. Fecundity and initial larval quality have been related to broodstock conditioning, but effects on larval development and metamorphosis remain poorly understood. In addition, molluscan larval mortalities have been often associated with bacterial contamination and flow-through techniques may help to overcome this problem. Both aspects have been considered in the present work. O. edulis broodstock were conditioned at 19 °C and fed three different microalgal diets. Two were single-species diets: Rhodomonas salina... |
| Tipo: Text |
Palavras-chave: Ostrea edulis; Feeding; Broodstock conditioning; Larval development; Flow-through. |
| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00090/20093/17732.pdf |
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| Robert, Rene. |
| Centre autonome de production, d'élevage et de commercialisation, le bassin d'Arcachon assurait ces dernières années une part non négligeable de l'approvisionnement en naissain d'huîtres creuses des régions conchylicoles du littoral septentrional et méditerranéen de la France. |
| Tipo: Text |
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| Ano: 1983 |
URL: http://archimer.ifremer.fr/doc/00090/20149/17799.pdf |
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| Brizard, Raphael; Boudry, Pierre; Haffray, Patrick; Labbe, C.; Suquet, Marc; Robert, Rene; Masse, G.; Pepin, Jean-francois; Saulnier, Denis. |
| In order to improve oyster culture, many research programs try and propose new methods aiming at improving genetically the product performances and quality (selection, polyploidisation). As for terrestrial animal production, the continuity of the different works as well as the spreading of the genetical progress would be made easier by the development of conservation techniques of the selected genotypes. Cryopreservation, which is often used in selection programs of terrestrial animals or fish farming species, is not always available for bivalves. This technique would enable the conservation of the gametes of individuals selected for their high growth potential, their resistance to diseases and/or their quality for a smaller cost and less risks than the... |
| Tipo: Text |
Palavras-chave: Tetraploïde; Diploïde; Concervation; Spermatozoides; Cryoconservation; Génétique; Crassostrea gigas; Huîtres. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/acte-3339.pdf |
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| Robert, Rene; Parisi, Guilina; Pastorelli, Roberta; Poli, Bianca Maria; Tredici, Mario. |
| In an attempt to provide cost-effective alternatives to live microalgae and to simplify hatchery-nursery procedures, concentrated microalgae appear to be very promising. Due to its high preservation ability, Prasinophytes appear to be good candidates for such alternative diets. Nevertheless, in a previous study the utilization of Tetraselmis suecica was only conceivable for old Crassostrea gigas larvae. In the present work its nutritional quality has been accordingly searched on ]apanese oyster's juveniles. Whatever the assemblages and condition, fresh or preserved microalgae, T. suecica did not allow an adequate postlarval development in C. gigas. |
| Tipo: Text |
Palavras-chave: Nutritional quality; Crassostrea gigas; Tetraselmis suecica; Microalgae; Valeur alimentaire; Crassostrea gigas; Tetraselmis suecica; Microalgues. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/2002/publication-6202.PDF |
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| His, Edouard; Robert, Rene. |
| "Il est impossible d'imaginer un lieu plus favorable à l'ostréiculture que le bassin d'Arcachon" (Yonge, 1950). En effet, l'huître indigène, Ostrea edulis, et l'espèce plus récemment introduite, Crassostrea gigas, peuvent s'y reproduire en abondant. Si l'exploitation de la première a pris fin à la suite de deux épizooties consécutives, la seconde est l'objet d'une culture intensive dont la production annuelle est d'environ 12 000 tonnes de mollusques commercialisés. Des anomalies ont sévi dans la baie, de 1977 à 1981, rendant les récoltes de naissain pratiquement sensibles aux facteurs d'agression, et ont même été proposées par Woelke (1967) comme matériel biologique, afin de tester la qualité des eaux en zone littorale. La technique des élevages larvaires... |
| Tipo: Text |
Palavras-chave: Bassin d'Arcachon; Crassostrea gigas; Larves; Température; Nutrition; Bioessais; Facteurs anthropiques. |
| Ano: 1987 |
URL: http://archimer.ifremer.fr/doc/00019/13055/10013.pdf |
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| Robert, Rene; Trintignac, P. |
| In mollusc hatcheries and nurseries, live microalgae are traditionally used as feed for bivalves. Despite recent improvements in efficiency, such intensive culture of microalgae represents major cost factors in the production of bivalve larvae and spat. In an attempt to provide cost-effective alternatives and to simplify hatchery-nursery procedures, non-living algal food has been developed over the past few years. Substitution products such as bacteria, yeast, vitamin or docosahexaenoic acid enriched powders, dry and concentrated microalgae and microcapsules have been tested and evaluated on an experimental scale. The present article reviews major research aimed at developing non living diets in mariculture, which generally resulted in lower growth and... |
| Tipo: Text |
Palavras-chave: Mollusc rearing; Artificial feed; Microalgae; Hatchery; Nursery. |
| Ano: 1997 |
URL: http://archimer.ifremer.fr/doc/00090/20076/17719.pdf |
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| Angeri, S.; Bougaran, Gael; Connan, Jean-paul; Jouin, Jean-claude; Kaas, Raymond; Le Dean, Loic; Legrand, J.; Loubiere, K.; Lukomska, Ewa; Olivo, Erell; Picquet, Marie-lise; Pruvost, J.; Robert, Rene. |
| Les travaux présentés dans le cadre de ce rapport d'activité rendent compte des avancées réalisées sur le plan (1) biologique, avec d'une part une étude sur le comportement du genre Chaetoceros en culture continue et, d'autre part, les résultats d'expérimentations sur les performances d'élevages larvaires réalisés sur la base de cultures de microalgues en continu, et (2) technologique, avec la continuité des actions de développement du photobioréacteur destiné aux écloseries commerciales ainsi que des périphériques indispensables à son intégration dans le secteur aquacole. |
| Tipo: Text |
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| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/00304/41518/40726.pdf |
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| Registros recuperados: 102 | |
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