|
|
|
| Registros recuperados: 69 | |
|
|
| Bourles, Yves; Maurer, Daniele; Le Moine, Olivier; Geairon, Philippe; Mazurie, Joseph; Gangnery, Aline; Alunno-bruscia, Marianne; Pouvreau, Stephane; Goulletquer, Philippe. |
| Oyster farming is the main aquaculture activity in France, where Pacific oyster (Crassostrea gigas) is spatially cultured from the English Channel to the Mediterranean coasts. Oyster growth performance monitored along French coasts are widely heterogeneous among culture sites and over years. Many studies have been carried out to understand the effects of environmental factors on oyster growth and physiology, by using bioenergetics growth models. However, most of these studies were site-specific. As an example, the model developed by Barillé et al. (1997), which was extensively specified with more than 50 parameters, was validated in the Marennes-Oléron Bay, but cannot be successfully applied to other culture sites without re-estimating parameters or... |
| Tipo: Text |
|
| Ano: 2009 |
URL: http://archimer.ifremer.fr/doc/00032/14367/11657.pdf |
| |
|
|
| Cugier, Philippe; Frangoudes, Katia; Blanchard, Michel; Mongruel, Remi; Perez, Jose; Le Mao, Patrick; Robin, T.; Fontenelle, Guy; Mazurie, Joseph; Cayocca, Florence; Pouvreau, Stephane; Olivier, F.. |
| Tipo: Text |
|
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00026/13707/10862.pdf |
| |
|
|
| Dosdat, Antoine; Fuchs, Jacques; Mazurie, Joseph; Paquotte, Philippe; Mariojouls, Catherine. |
| After the decision taken by the French - South African committee to reduce the budget and the duration of all the selected proposaIs of the first call, Rhodes University and Ifremer decided to revise their joint proposaI and organized a meeting in South Africa in february 1998. A multidisciplinary team composed of economists and specialists in different fields of aquaculture spent on week in South Africa (9 and 15 february 1998) with Prof Hecht and his team in Rhodes University, in order to precise the proposaI and define detailed actions to be carried out within the next two years. The present report summarises the principal conclusions of the survey in term of general approach, detailed methodologies and planning for 1998. |
| Tipo: Text |
|
| Ano: 1998 |
URL: http://archimer.ifremer.fr/doc/00153/26463/24571.pdf |
| |
|
| |
|
|
| Alunno-bruscia, Marianne; Bourles, Yves; Maurer, Daniele; Robert, Stephane; Mazurie, Joseph; Gangnery, Aline; Goulletquer, Philippe; Pouvreau, Stephane. |
| Many studies based on bioenergetics growth models have investigated the effects of environmental factors on oyster (Crassostrea gigas) growth and physiology. However, most of these models are site-specific and cannot be applied to other culture sites without the re-estimation of parameters or re-formulation of some processes. We aimed to develop a generic growth model suitable for application in contrasting environments, with a constant set of parameters. We tested the oyster-DEB model (Bourlès et al. 2009) for the stimulation of C. gigas growth in different cohorts (spats and adults) at major shellfish culture sites in France, in several years: Arcachon (1993–1994); Marennes-Oléron (2007); Quiberon (1999, 2000, 2001); Rade de Brest (2008); Baie du... |
| Tipo: Text |
Palavras-chave: DEB theory; Modelling; Bivalves; Crassostrea gigas; Phytoplankton; Temperature effect; Coastal environment.. |
| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00043/15403/12762.pdf |
| |
|
|
| Mazurie, Joseph; Soletchnik, Patrick; Ropert, Michel; Fleury, Pierre-gildas; Auby, Isabelle; Maurer, Daniele; Bacher, Cedric. |
| Monitoring of Crassostrea gigas performances, from two year-classes, during 12 years, in various French shellfish farming areas have revealed great inter-annual and inter-sites differences in reproduction, growth, mortality or quality of oysters (meat content, Polydora infestation...). The presentation attempts to highlight how a comparative analysis of existing temporal or spatial data on molluscs, water quality, geography or meteorogoly may help to better understand and manage shellfish ecosystems. The range of hydrobiological conditions (food availability, turbidity, temperature...) recorded at national, pluriannual scale, in relation to shellfish performances, enlarges the base of such relationship. However, undirect causative factors, either natural... |
| Tipo: Text |
Palavras-chave: Climatic modulation; Hydro geography; Reproduction; Growth; Spatial differences; Water quality; Mortality; Shellfish productivity. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/acte-3318.pdf |
| |
|
|
| Lebec, C; Mazurie, Joseph. |
| To provide updated information on the growth of Crassostrea gigas in Brittany, experimental stations on 8 sites (culture area) were monitored. Biometric measurements (length, width,...), meat composition (proteins, lipids, carbohydrates...), quality, survival and parasitism were observed after 7 months. A descriptive study by principal components analysis was conducted to find the most significative variables explaining the variability and classifying the sites. Six groups of station can be identified by their respective performances that have been screened in detail. An optimal strategy was discussed to establish a most efficient data network in Brittany. The yearly variations will be checked up and their correlations with environmental factors tested... |
| Tipo: Text |
Palavras-chave: ANE; France; Brittany Crassostrea gigas Bivalvia Monitoring Biochemistry Site selection Aquaculture Rearing Experimental research Pond culture Growth. |
| Ano: 1992 |
URL: http://archimer.ifremer.fr/doc/1992/acte-918.pdf |
| |
|
|
| Soletchnik, Patrick; Ropert, Michel; Mazurie, Joseph; Fleury, Pierre-gildas; Le Coz, Florence. |
| Oyster mortality was monitored at multiple sites along the French coastline (around 5 500 km) between 1993 and 2005. Mortality data for one- and two-year-old oysters were collected over 1012 years in 39 oyster culture sites bordering 3 different "seas": the English Channel, Bay of Biscaye and Mediterranean. Combining these data with records from environmental monitoring databases, 11 of these sites had consistent chronological data sets including both environmental data and mortality records. Mortality in one-year-old oysters was clearly summer mortality (49% of their annual mortality) whereas mortality of two-year-olds occurred mostly in spring (51%). Analysis of variance revealed that "coastal area" was the main influence on mortality of one-year-olds... |
| Tipo: Text |
Palavras-chave: Mortality; Environment; Crassostrea gigas; Pacific oyster. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-3295.pdf |
| |
|
|
| Mazurie, Joseph; Langlade, Aime; Fleury, Pierre-gildas; Bouget, Jean-francois; Claude, Serge; Foucart, Marie; Bedier, Edouard. |
| This study is the second part of a former report rapport Ifremer DRV/RST/RA/LCB/2002-08 dealing with rearing methods, growth and mortality performances, and problems encountered by the oyster farmers from Quiberon Bay (2800 ha of leases) : the first report relied on a survey achieved in july 200l, about 18 oyster farmers, and 2 diving campaigns (july and october 2001) on 2 years old oyster batches from the same farmers. Il is now completed by a last campaign of diving in october 2002, on 7 parcels out of the 18, still bearing the initial oysters. The analysed enterprises vary in particular by the location and depth of their concession inside the bay, but also by their rearing scheme : a majority favours seedings with 18 month old oysters or more, according... |
| Tipo: Text |
Palavras-chave: Huître creuse; Crassastrea gigas; Baie de Quiberon; Croissance; Mortalité; Pratiques culturales; Rentabilité économique; Cupped oyster; Crassostrea gigas; Mortality; Rearing practices; Profitability; Bay of Quiberon; .growlh. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/00102/21322/18944.pdf |
| |
|
|
| Samain, Jean-francois; Ropert, Michel; Bedier, Edouard; Soletchnik, Patrick; Mazurie, Joseph; Le Coz, Florence; Blin, Jean-louis; Mille, Dominique; Pajot, Régis; Haffray, Patrick; Bacher, Cedric; Grangere, Karine; Grangere, Karine; Pouvreau, Stephane; Bourles, Yves; Gohin, Francis; Woerther, Patrice; Boudry, Pierre. |
| Summer mortality has been reported in the Pacific oyster, Crassostrea gigas, for many years in Japan, US and Europe. It affects both adults and juveniles and the causes of this phenomenon are complex. Environmental, physiological or pathological putative causes were studied all over the world. Recently, the MOREST project ((MORtalitEStivale) a multidisciplinary project (2001-2005) focused on his problem led to a better understanding of this phenomenon in France. The results showed in these geographical conditions, the main interactions between the oysters, their environment and certain pathogens. |
| Tipo: Text |
Palavras-chave: Interaction model; Environmental parameters; Summer mortality; Crassostrea gigas; Pacific oyster. |
| Ano: 2006 |
URL: https://archimer.ifremer.fr/doc/2006/acte-3476.pdf |
| |
|
|
| Mazurie, Joseph; Foucart, Marie; Langlade, Aime; Bouget, Jean-francois; Fleury, Pierre-gildas; Joly, Jean-pierre; Martin, Anne-genevieve. |
| This study deals with rearing methods, growth and mortality performances, and problems encountered by the oyster farmers from Quiberon Bay (2800 ha of leases) : it relies on a survey achieved in july 2001, about 18 oyster farmers, and 2 diving campaigns (july and october 2001) on 2 years old oyster batches from the same farmers. The analysed enterprises vary in particular by the location and depth of their concession inside the bay, but also by their rearing scheme : a majority favours seedings with 18 month old oysters or more, according to prices and availability of oysters supplies. The duration until marketable size and mean mortalities seem to have increased since a preceding inquiry in 1986. The main constraint, affecting priorly the south border... |
| Tipo: Text |
Palavras-chave: Rearing practices; Density; Predators; Mortality; Growth; Bay of Quiberon; Crassostrea gigas; Cupped oyster; Pratiques culturales; Densité; Algues; Prédateurs; Mortalité; Croissance; Baie de Quiberon; Crassostrea gigas; Huître creuse. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/2002/rapport-6103.pdf |
| |
|
|
| Mazurie, Joseph; Bouget, Jean-francois. |
| in order to estimate the carrying capacity of Mont Saint-Michel Bay, the stock (or biomass) of cupped oysters, Crassostrea gigas, cultivated intertidally, in Cancale Bay, has been estimated in october 2002. Aerial photographs, at 2 scales (1/10 000 and 1/2000), provided by the mollusc farmers union, have been used to estimate the cumulative length of surelevaged trestles (« tables ») and the occupation rate by oyster bags. A field survey, between the 7th and 9th of october 2002, has been conducted by Ifremer with the help of « Lycée Maritime de Saint-Malo », on 40 sampled stations : 3 subsample bags per station were examined (counts and weights of different age-class oysters). 309 ha out of 333 leased ha were considered exploited (after elimination of... |
| Tipo: Text |
Palavras-chave: Baie du Mont Saint Michel; Cancale; Crassostrea gigas; Cupped oysters; Production; Biomass; Baie du Mont Saint Michel; Cancale; Crassostrea gigas; Huîtres creuses; Production; Biomasse; Stock. |
| Ano: 2004 |
URL: http://archimer.ifremer.fr/doc/2004/rapport-5296.pdf |
| |
|
| |
|
|
| Ropert, Michel; Mazurie, Joseph; Bedier, Edouard; Le Coz, Florence; Soletchnik, Patrick. |
| L'objectif de ce thème est de préciser les relations entre Mortalités et Environnement, en déclinant cette relation à travers les "risques environnementaux" caractérisés depuis le début du programme MOREST. La température, les bassins versant etlou l'eau douce, la ressource trophique, le compartiment sédimentaire, autant de facteurs impliqués directement ou indirectement dans les processus de mortalités de Crassostrea gigas. Ces facteurs d'influence "externe" sont étudiés à différentes échelles d'espace ("nationale", "régionale", "sites") et de temps (annuelle, mensuelle, bimensuelle, journalière, horaire, infra horaire) en s'appuyant sur des données issues de bases institutionnelles (REMORA', REPHY~, METEO-FRANCE) et sur les résultats de terrain obtenus... |
| Tipo: Text |
|
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/00304/41536/40744.pdf |
| |
|
|
| Mazurie, Joseph; Claude, Serge; Tige, Gilbert; Le Mouroux, Guylaine. |
| La situation épidémiologique de la maladie de l'anneau brun et accessoirement les croissances et mortalités observées dans le cadre du réseau de suivi des élevages et gisements naturels de palourdes, en Bretagne, en 1991 sont présentées. En élevage, la situation demeure assez contrastée avec une majorité de semis faiblement infestés (moins de 20 % d'anneaux bruns) et quelques semis fortement atteints, soit en secteurs sensibles (Brouennou, Finistère) soit à la suite de transferts de juvéniles de gisements naturels (Morbihan). Ces gisements naturels sont en majorité contaminés, à des taux faibles (inférieurs à 10 %). |
| Tipo: Text |
|
| Ano: 1993 |
URL: http://archimer.ifremer.fr/doc/00081/19191/16786.pdf |
| |
|
|
| Mazurie, Joseph. |
| Les stratégies d'échantillonnage mises en oeuvre à l 'IFREMER dans le domaine du contrôle de la qualité des produits et du milieu conchylicoles, le long du littoral et dans les installations à terre sont analysées . En outre, les plans d'échantillonnage pour la gestion des cheptels, l'estimation des stocks, de la production biologique, des ventes et des transferts inter-bassins et de l'état zoosanitaire, sont discutés . |
| Tipo: Text |
Palavras-chave: Echantillonnage; Conchyliculture. |
| Ano: 1987 |
URL: http://archimer.ifremer.fr/doc/00424/53538/54394.pdf |
| |
|
|
| Mazurie, Joseph; Fleury, Pierre-gildas; Claude, Serge; Hirata, Toshio; Langlade, Aime; Martin, Anne-genevieve; North, Benjamin. |
| Summer mortalities of young oysters have been studied in 1999 through the monitoring of a unique oyster batch distributed among 3 sites located from upstream of an estuary (Fort-Espagnol, Auray river) to downstream (Kerpenhir, Auray river) up to open bay (Men er Roué, Bay of Quiberon). Mortality and growth have been monitered in parallel with vitality indices, so as to try or identify periods of weakness of oysters. The spat grew from a mean weight of 3 g, in the beginning of May to around 35 g in November, without sharp differences between sites. The summer mortalities remained moderate (10 %) in the 2 most marine stations, whereas a light peak of mortality (15 %) was recorded in July in the most continental station. Any of the physico-chemical parameters... |
| Tipo: Text |
Palavras-chave: Huître creuse; Crassostrea gigas; Rivière d'Auray; Quiberon; Mortalité; Vitalité; Valvomètre; Force musculaire; Perte de sel; Cupped oyster; Spat; Gigas; Auray river; Of Quiberon; Mortality; Vitality; Valvometer; Muscle force; Salt loss; Hermeticity. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/00025/13632/10713.pdf |
| |
|
| |
|
| |
|
|
| Le Chanjour, Regis; Mazurie, Joseph; Goyard, Emmanuel; Martin, Anne-genevieve; Langlade, Aime; Tige, Gilbert; Le Mouroux, Guylaine; Le Coguic, Yvette. |
| Pendant l'été 1995, des mortalités d'huîtres creuses ont été observées sur une grande partie du littoral français et notamment en Bretagne. Pour cette région, un ensemble d'informations concernant ces mortalités a été recueilli au près d'organismes en contact direct avec les professionnels : IFREMER, les Affaires Maritimes et la Section Régionale Conchylicole de Bretagne sud. L'objectif de ce rapport est, à partir de quatre sources d'informations, de chiffrer ces mortalités dans les différents sites bretons et d'étudier les relations éventuelles avec différents paramètres tels que l'origine des huîtres, la technique d'élevage, le site d'élevage, etc... Des comparaisons sont faites avec les résultats d'enquête réalisée en Normandie (IFREMER... |
| Tipo: Text |
|
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/00107/21822/19409.pdf |
| |
| Registros recuperados: 69 | |
|
|
|
