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Registros recuperados: 12
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Analyse des pratiques, contraintes et performances d'élevage de l'huître creuse Crassostrea gigas, en 2001, sur différentes concessions en eau profonde de la Baie de Quiberon : enquête auprès de 18 concessionnaires et plongées sur 18 semis d'huîtres de 2 ans, en juin et octobre 2001 ArchiMer
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
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Comparaison des performances d'élevage et de la vitalité de naissain d'huîtres creuses Crassostrea Gigas, en 3 sites du Morbihan (Rivière d'Auray et Baie de Quiberon), de mai 1999 à mars 2000 ArchiMer
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
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Comparative karyological study of cupped oyster species ArchiMer
Leitao, Alexandra; Boudry, Pierre; Labat, Jean-philippe; Thiriot-quievreux, Catherine.
Chromosomes of six cupped oyster species were studied using karyometric analysis alter conventional Giemsa staining, and silver staining, Karyotypes of Crassotrea angulata (nine metacentric and one submetacentric chromosome pairs), C. sikamea (nine metacentric and one submetacentric chromosome pairs), C. virginica (eight metacentric and two submetacentric chromosome pairs), C, ariakensis (eight metacentric and two submetacentric chromosome pairs), C, gasar (six metacentric and four submetacentric chromosome pairs), and Saccostrea commercialis (eight metacentric and two submetacentric chromosome pairs) are distinguishable by the number and position of the submetacentric chromosome pair and by the location of nucleolus organizer regions, Comparative...
Tipo: Text Palavras-chave: Bivalvia; Cytotaxonomy; Karyotype; Chromosome; Cupped oyster.
Ano: 1999 URL: http://archimer.ifremer.fr/doc/1999/publication-2737.pdf
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Déterminisme de la croissance de l'huître creuse, Crassostrea gigas, en Bretagne : Méthodologie d'élaboration d'un modèle global. ArchiMer
Dormoy, Jean-marc.
Based on a four years survey of Pacific Oyster Crassostrea gigas growth in the main shellfish farming areas of Brittany from 1989 to 1992, this report is a first attempt to explain the differences between sites and years. The determinist growth models do not suit to this objective, for methodological and practical reasons. Nevertheless, they provide the conceptual basis of a global model by identifying the reliable environmental parameters for a statistical explanation of growth results. The present study proposes a methodology for a global statistical model using the main stages of the ecological and biological processes of shellfish growth. These propositions are based on the analysis of the determinist model's constraints, and also on the identification...
Tipo: Text Palavras-chave: Huître creuse; Crassostrea gigas; Croissance; Environnement; Modèle I(lobal; REMORA; Cupped oyster; Crassostrea Gigas; Growth; Environment; Global model; REMORA.
Ano: 1995 URL: http://archimer.ifremer.fr/doc/00122/23346/21172.pdf
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History, Status, and Future of Oyster Culture in France ArchiMer
Buestel, Dominique; Ropert, Michel; Prou, Jean; Goulletquer, Philippe.
The history of French oyster culture consists of a succession of developmental phases using different species, followed by collapses caused by diseases. The indigenous species Ostrea edulis was replaced first with Crassostrea angulata, then C. gigas. France is now the top producer and consumer of oysters in Europe, producing around 120,000 t of the cupped oyster C. gigas annually, and an additional 1500 t of the flat oyster O. edulis. Cupped oysters are produced all along the French coast from natural and hatchery spat. Various structures are used to collect spat from the wild. After a growing-on period, oysters are Cultivated by three main methods: (1) on-bottom culture in the intertidal zone or in deep water, (2) off-bottom culture in plastic mesh bags...
Tipo: Text Palavras-chave: Cupped oyster; Flat oyster; Ostrea edulis; Crassostrea gigas; French production; Aquaculture.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/publication-7396.pdf
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Les apports de la génétique dans la filière ostréicole française ArchiMer
Lapegue, Sylvie; Renault, Tristan.
The most known and certainly the most important contribution of genetics to the oyster indus try is the development of the triploid cupped oyster. Released for the first time in the 1980s, the triploid oyster has triplets of  chromosomes instead of pairs. Currently, triploid oysters are obtained by crossing diploid and tetraploid oysters. These oysters are characterized by a near lack of milt in summer, which makes them generally popular with consumers, and by a faster growth, allowing a shorter production cycle. In parallel, the exploitation of natural resistance in the diversity of French oysters has been considered to improve the health of farmed populations which is a  major challenge for the sustainability of aquaculture farms. Currently, the...
Tipo: Text Palavras-chave: Huître creuse; Triploïdie; Sélection; Maladies; Ostréiculture; Cupped oyster; Triploidy; Selection; Disease; Shellfish farming.
Ano: 2019 URL: https://archimer.ifremer.fr/doc/00498/60931/64326.pdf
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Les pratiques culturales peuvent-elles permettre de réduire la surmortalité du naissain d'huîtres creuses? Récapitulatif des essais d'élevage et expérimentations zootechniques menés sur le territoire français entre 2008 et 2010 ArchiMer
Soletchnik, Patrick; Mazurie, Joseph; Allain, Gwenhael; Bedier, Edouard; Benabdelmouna, Abdellah; Blin, Jean-louis; Bouquet, Anne-lise; Cochet, Hélène; Degremont, Lionel; Gaussem, Florian; Gervasoni, Erika; Glize, Philippe; Petton, Bruno; Roussel, Pierre-yves; Pernet, Fabrice.
This paper summarizes knowledge about relations between husbandry practices and oyster spat mortalities since 2008 in France. These relations are strictly analyzed from a panel of experiments set on the shore (in outdoor experiments) by Ifremer teams and technical institutes all over French coasts. Results show some practices are able to reduce spat mortality with some influencing factors relevant of spat quality (sanitary status, natural or genetic selection) or husbandry practices. Spat “free” of virus is able to survive up to 90% when it is isolated and confined in ponds or nursery, during an epidemic crisis. When outbreaks occurred in oyster beds, natural or nursery spat died in almost same proportions. In 2010, some studies conducted in Mediterranean...
Tipo: Text Palavras-chave: Surmortalité; Naissain; Huître creuse; OsHV-1; Pratiques culturales; Mortality; Spat; Cupped oyster; Crassostrea gigas; OsHV-1; Cultural practices.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00032/14280/25847.pdf
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Novel Microsatellite Markers for Brazilian Mangrove Oysters ( Crassostrea gasar ) and their Cross-Amplification in Crassostrea rhizophorae BABT
Baldez,Renata do Socorro Corrêa; Melo,Mauro André Damasceno; Sampaio,Iracilda; Tagliaro,Claudia Helena.
ABSTRACT A microsatellite CT/GT enriched genomic library was developed for Crassostrea gasar and twelve new polymorphic loci were isolated and characterized. The markers were successfully amplified from 25 individuals of Crassostrea gasar and 11 cross-amplified individuals of Crassostrea rhizophorae. There was no evidence of linkage between loci in either species.
Tipo: Info:eu-repo/semantics/article Palavras-chave: SSR; Genetic markers; Cupped oyster; Population structure..
Ano: 2016 URL: http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-89132016000100426
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Pratiques culturales et mortalités d'huîtres creuses Crassostrea gigas en baie de Quiberon, en 2001-2002. Bilan des enquêtes, plongées et prélèvements sur 18 semis en 2001-2002 ArchiMer
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
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Programme qualité des huîtres creuses Crassostrea gigas en baie de Bourgneuf 2ème année, 1996 ArchiMer
Baud, Jean-pierre; Le Bayon, Nicolas; Palvadeau, Hubert.
Variability of oyster Crassostrea gigas quality was studied in winters 1995 and 1996. Landings per unit of production were estimated using the number of commercialized sanitary certification labels or/and the annual landings declared to the Veterinary Services. 998 oysters from 66 oyster farmers were described accordingly with 15 parameters easily measurable. Maximum variability like in 1995 was expressed by condition indices, macroscopic and morphologic factors. Theses results showed that reproductible and simple factors should described variability of oyster quality in the bay of Bourgneuf. However a new estimation of oyster quality should be involved in winter 1997 to acheive this study
Tipo: Text Palavras-chave: Variabilité de la qualité; Huîtres creuses; Crassostrea gigas; Baie de Bourgneuf; Vendée; Variability of quality; Cupped oyster; Crassostrea gigas; Bay of Bourgneuf.
Ano: 1997 URL: http://archimer.ifremer.fr/doc/00047/15872/13291.pdf
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REMORA 94. Analyse des résultats de la seconde année du réseau de suivi de la croissance de l'huître creuse sur les côtes françaises ArchiMer
Goyard, Emmanuel.
The Aquaculture Resources department Mollusc Network (REMORA ) has been monitoring in 1994 like in 1993 the growth of homogeneous batches of Crassostrea gigas (initially 18 months old, same origin, same history, same size) in the main French production areas. The monitored parameters deal with growth, morphology, survival, composition and parasite infestations. The comparison between two rearing conditions (traditional bags versus wooden plate to which individuals were stuck) demonstrated like in 1993 improved growth rate (which could also be explained by the lower local density) and a tendency for the oysters to become wider on plates (which is probably related to the absence of shell erosion). Major regional characteristics are revealed by the analysis,...
Tipo: Text Palavras-chave: Growth; Crassostrea gigas; Cupped oyster; Oyster culture; Monitoring network; Croissance; Crassostrea gigas; Huître creuse; Ostréiculture; Réseau.
Ano: 1996 URL: http://archimer.ifremer.fr/doc/1996/rapport-1650.pdf
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REseau MOllusques des Rendements Aquacoles de l'huître creuse Crassostrea gigas sur les côtes françaises (REMORA). Résultats de la lagune de Thau pour l'année 2003. ArchiMer
Le Gall, Patrik; Lagarde, Franck; Pichot, Yves; Vercelli, Catherine.
The monitoring network IFREMER/REMORA in Thau lagoon is assessing, on a yearly basis, mortality, growth and quality criteria distributed among 6 stations. Samplings are carried out in March, June, September and December. 2003 is a year with a very important mortality in Mèze and Marseillan area due to an anoxy and an anormal mortality at Bouzigues Nord in december. The growth rate is always better than others French oysters areas. Afnor index is high (beetwen 13.7 and 16.5 in december), so the totality of the oysters are classifed in "Spéciales". Polydora sp. Index is important but the initial stock was first infected. The valve quality is good, with no gelatine, except on Bouzigues South.
Tipo: Text Palavras-chave: REMORA; France; Lagune de Thau; Huître creuse; Crassostrea gigas; Mortalité; Croissance; Qualité; Polydora; REMORA; France; Thau lagoon; Cupped oyster; Crassostrea gigas; Mortality; Growth; Quality; Polydora.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/00113/22384/20079.pdf
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