Consulta: creatorFacets:"Mazurie, Joseph"
Registros recuperados: 69
Data/hora: 05/06/2024 05:35:20

Modelling Crassostrea gigas growth and reproduction in different contrasted ecosystems by using dynamic energy budgets : generic validation of the oyster-DEB model
Provedor de dados: 5
Autores: 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

Impact des facteurs environnementaux et des pratiques conchylicoles sur la baie du Mont Saint-Michel et la production conchylicole. Etude de scenarii par modélisation. Programme Liteau 3. Rapport Final
Provedor de dados: 5
Autores: 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

Definition of scientific basis for the development of an overall aquaculture masterplan for South Africa - Report of the mission in South Africa from 9 to 15 February 1998 - Project definition and detailed workplan for 1998
Provedor de dados: 5
Autores: 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

L'huître creuse Crassostrea gigas en Bretagne. Résultats du réseau de suivi de 1991
Provedor de dados: 5
Autores: Le Bec, Claude; Mazurie, Joseph.
The year 1991 is the third one of the regional network on growth assessment of Crassostrea gigas in Brittany, wearing on 9 sites and 3 stations per site. 2 bags of 210 oysters, 18 month old, were placed in each station. Comparatively to previous years, the 1991 growth was moderate, and condition index inferior. However, the survival rates were very high (above 91 %) and most of the slight mortalities occurred a short time after stocking (as revealed by the sizes of dead shells). An improvement was also observed in the infestation rate by the polychaete Polydora sp..Most of the growth differences between sites and stations are still present. An analytical study including environmental variables would be necessary for explanations and will be tempted in 1993.
Tipo: Text
Palavras-chave: Bretagne; Crassostrea gigas; Croissance; Mortalité; Indice de condition; Polydora; A.C.P.; Brittany; Crassostrea gigas; Growth; Mortality; Condition index; Polydora; Factorial analysis.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/00102/21319/18939.pdf

A single bio-energetics growth and reproduction model for the oyster Crassostrea gigas in six Atlantic ecosystems
Provedor de dados: 5
Autores: 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

Assessment and interpretation of temporal or spactial differences in shellfish productivity of typical French ecosystems
Provedor de dados: 5
Autores: 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

Croissance de Crassostrea gigas en Bretagne en 1989, mise en place d'un reseau d'acquisition de donnees
Provedor de dados: 5
Autores: 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

Relationships between oyster mortality patterns and environmental data from monitoring databases along the coasts of France
Provedor de dados: 5
Autores: 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 10–12 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

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
Provedor de dados: 5
Autores: 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

Possibilities to prevent Crassostrea gigas oyster summer mortality in France
Provedor de dados: 5
Autores: 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

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
Provedor de dados: 5
Autores: 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

Estimation du stock d'huîtres creuses Crassostrea gigas, en élevage en Baie de Cancale, en octobre 2002
Provedor de dados: 5
Autores: 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

Rapport de mission AQUANET Forum, Fredericton, New Brunswick, Canada, 16- 18 juin 2003 &amp; visite à la station biologique de St Andrews, New Brunswick, Canada, 19 juin 2003
Provedor de dados: 5
Autores: Mazurie, Joseph.
Among the Excellence Centers developed to federate the Canadian research, Aquanet deals with marine and freshwater aquaculture. An interdisciplinary science forum was held at Fredericton, New Brunswick, Canada, in order to analyse the state of the fish and shellfish aquaculture sector and propose orientations for the future researches. Around 30 Canadian scientists and professionnals (a Norvegian and a French scientist invited) attended the meeting. A visit at the biological station and Huntsman marine center at Saint-Andrews, New Brunswick, concluded the mission
Tipo: Text
Palavras-chave: Canada; Nouveau Brunswick; Pisciculture; Conchyliculture; Aquaculture; Programmation Recherche; Aquanet; Canada; New Brunswick; Fish; Shellfish; Aquaculture; Research; Aquanet.
Ano: 2003
URL: https://archimer.ifremer.fr/doc/00681/79316/81824.pdf

Défi MOREST - Mortalités estivales de l'huître creuse Crassostrea gigas - Caractérisation des facteurs de risques associés au mortalites estivales - Synthèse du thème I - Évaluation des risques dans les écosystèmes conchylicoles. (La Rochelle 14- 15 mars 2006)
Provedor de dados: 5
Autores: 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

Résultats du réseau de suivi des élevages et gissements naturels de palourdes en Bretagne en 1991
Provedor de dados: 5
Autores: 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

Stratégies d'échantillonnage en conchyliculture
Provedor de dados: 5
Autores: 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

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
Provedor de dados: 5
Autores: 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

Inventaire des Zones d'Aptitude aquacole du Littoral Français volume 1 : conchyliculture
Provedor de dados: 5
Autores: Gaignon, Jean-louis; Mazurie, Joseph; Loarer, Ronan; Youenou, Gilles.
La France est l'un des premiers pays consommateurs de produits de la mer (19 kg/habitant/an). Malgré un linéaire de côtes important et des conditions naturelles favorables à la culture des mollusques, notre pays n'est pas auto-suffisant: de l'ordre de 40 000 t de moules par an (poids frais entier), et autant (en équivalent frais) de coquilles Saint-Jacques et pétoncles sont importées chaque année.
Tipo: Text
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00083/19402/16995.pdf

Mortalités de palourdes d'élevage dans le traict du Croisic
Provedor de dados: 5
Autores: Mazurie, Joseph.
Mortalités de palourdes d'élevage dans le traict du Croisic
Tipo: Text
Ano: 2013
URL: https://archimer.ifremer.fr/doc/00135/24602/81620.pdf

Bilan des mortalités estivales 1995 d'huîtres creuses Crassostrea gigas en Bretagne
Provedor de dados: 5
Autores: 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

Bivalve aquaculture transfers in Atlantic Europe. Part A: Transfer activities and legal framework
Provedor de dados: 5
Autores: Muehlbauer, F.; Fraser, Duncan; Brenner, M.; Van Nieuwenhove, K.; Buck, B. H.; Strand, O.; Mazurie, Joseph; Thorarinsdottir, G.; Dolmer, P.; O'Beirn, F.; Sanchez-mata, A.; Flimlin, G.; Kamermans, P.
Intentional transfers of numerous bivalve species have had a long tradition and are commonly conducted along the European Atlantic coast. However numerous studies have concluded that intentional transfer of species for aquaculture purposes is one of the most principal vectors for the introduction of exotic species around the world. Threats due to the transfer and introduction of species have been identified and a range of global and regional agreements, guidelines, standards and statutes to minimize effects have been established. Yet whether such regulations can protect and conserve the marine environment and address economic considerations remains unanswered. This study provides the first overview of bivalve transfer activities for aquaculture purposes...
Tipo: Text
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00169/28069/26499.pdf

Comparaison des performances d'élevage de moules en 4 sites mytilicoles de la baie de Vilaine, de février 2000 à février 2001
Provedor de dados: 5
Autores: Mazurie, Joseph; Bouget, Jean-francois; Claude, Serge; Fleury, Pierre-gildas; Langlade, Aime.
Mussel samples have been placed in plastic-mesh bags hung on wood poles (« bouchots »), at 4 locations of a mussel culture area in the bay of Vilaine (South Brittany, France). They have been monitored for one year, from February 2000 to February 2001. The recorded growth have been rather fast (plus 1.2 g per month between April and September), and mortalities moderate (between 15% to 25%), with better results in southern stations, further from the estuary.  Among the physico-chemical parameters recorded, the most striking were very low salinities (below 10 g/l) recorded for days, after heavy rains. They provoqued a valve closure of mussels (recorded by a « valvometer »). Some physiological indicators being tested (muscle force and hermeticity) seemed to...
Tipo: Text
Palavras-chave: Valve movements; Hermeticity; Muscle strength; Mortality; Growth; South Brittany; Bay of Vilaine; Mytilus edulis; Mussel; Écartements valvaires; Herméticité; Force musculaire; Mortalité; Croissance; Bretagne sud; Baie de Vilaine; Mytilus edulis; Moule.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/rapport-6373.pdf

Les mortalités d'ormeaux en Bretagne nord en 1998: synthèse des observations et analyses
Provedor de dados: 5
Autores: Mazurie, Joseph; Thebault, Anne; Le Mao, Patrick; Veron, Gerard; Tige, Gilbert; Richard, Olivier.
Des mortalités anormales d'ormeaux ont été signalées en Bretagne nord (départements d'Ille et Vilaine et Côtes d'Armor) à partir du mois d'août 1998 et porté atteinte à la pêcherie professionnelle de cette zone. Des mortalités de même type avaient été signalées en Bretagne Sud, l'année précédente. Les mortalités de 1998 ont épargné le secteur plus à l'ouest (le Finistère) et plus à l'est (la Normandie). Une estimation précise n'a pas été entreprise, mais les pertes signalées par endroits dépassent 50% du stock. Les ormeaux atteints, de toutes tailles, ne présentent pas de symptôme particulier. Les analyses histologiques réalisées en priorité n'ont pas révélé d'agent infectieux. Toutefois, dans le doute et devant le caractère évolutif du phénomène, une...
Tipo: Text
Palavras-chave: Ormeau; Mortalité; Côtes d'Armor; Ille-et-Vilaine; Abalone; Mortality.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00105/21666/19244.pdf

Croissance de Crassotrea gigas en Bretagne en 1989, mise en place d'un réseau d'acquisition de données
Provedor de dados: 5
Autores: Le Bec, Claude; Mazurie, Joseph.
En l'absence de données récentes sur la croissance de Crossostrea gigas en Bretagne, des stations expérimentales de grossissement ont été mises en place sur 8 sites ostréicoles. Des mesures de biométrie (longueur, largeur...), de composition de la chair, de qualité, de survie, et de parasitisme ont été effectuées après 7 mois d'élevage. Une analyse descriptive par A.C.P. est réalisée afin de dégager les variables les plus significatives et le classement des sites. Six groupes de sites ou stations peuvent être caractérisés suivant leurs performances respectives qui sont analysées dans le détail, variable par variable. La stratégie à adopter pour une meilleure représentation des sites est discutée afin de mettre en place un réseau d'acquisition de données...
Tipo: Text
Ano: 1992
URL: http://archimer.ifremer.fr/doc/00066/17738/15259.pdf

Estimation des stocks de moules dans le Pertuis Breton en 1987
Provedor de dados: 5
Autores: Mazurie, Joseph; Dardignac-corbeil, Marie-jose.
Une estimation de la biomasse de moules présente sur les bouchots du Pertuis Breton situés au sud de la Sèvre niortalse a été réalisée en 1987 . Le but était de mettre au point une stratégie d'échantillonnage adaptée à ce mode de culture . La méthode utilisée est décrite et une optimisation de l'effort d'échantillonnage réalisée ; elle détermine pour différentes précisions l'effort à consentir. La biomasse étudiée a été estimée à 4 722 tonnes avec une précision de 14 %.
Tipo: Text
Palavras-chave: Moules; Bouchots; Biomasse; Echantillonnage; Pertuis Breton; Mussels; Biomass; Sampling; Pertuis Breton.
Ano: 1988
URL: http://archimer.ifremer.fr/doc/00045/15589/12991.pdf

L'elevage de la palourde, programme national de recherche sur la maladie de l'anneau brun
Provedor de dados: 5
Autores: Flassch, Jean-pierre; Barret, Jean; Mazurie, Joseph; Maes, P; Nicolas, J; Noel, Thierry; Paillard, C; Lepennec, M.
A national program started in 1989 to drive researches on Ruditapes philippinarum brown ring disease correlated with a vibrio called P1. The researches have concerned epidemiological surveys on spats and adults, treatment methods, diagnostic techniques, and anatomical and functional studies about the vibrio-clam relations. The transmissions of the disease appeared mainly related to contaminated manila clam seeds, with secondary horizontal propagation. The brown ring formation appeared to be caused by a periostracum deterioration. Taking into account some of these results, an adapted cultural technique including special care of seeds and decreased densities was proposed to the farmers.
Tipo: Text
Palavras-chave: ANE; France; Brittany Ruditapes philippinarum Bivalvia Marine molluscs Vibriosis Research programmes Adults Spat Diseases Clam culture Rearing.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/1992/acte-925.pdf

Vibrio carchariae, a pathogen of the abalone Haliotis tuberculata
Provedor de dados: 5
Autores: Nicolas, Jean-louis; Basuyaux, Olivier; Mazurie, Joseph; Thebault, Anne.
Since 1997, mass mortality of the abalone Haliotis tuberculata L. has occurred in the natural environment along the French coast. The outbreak of disease started on the south coast of Brittany near Concarneau in 1997, then spread to the north of Brittany (in 1998) and the west coast of Normandy (Golfe de St. Malo in 1999). Between 60 and 80% of the abalone died. In 1999, mortality also affected a land-based abalone farm in Normandy during the summer. At this farm, a Vibrio sp. was isolated in abundance from abalone that had just died. The disease was experimentally reproduced by inoculation or by introducing the pathogen into the surrounding water. This vibrio, identified by genotypic and phenotypic characters, is related to V carchariae. It is similar to...
Tipo: Text
Palavras-chave: Pathogenicity; Bacterial epizootic; Vibrio carchariae; Haliotis tuberculata.
Ano: 2002
URL: http://archimer.ifremer.fr/doc/2002/publication-2795.pdf

Inventaire des Zones d'Aptitude aquacole du Littoral Français volume 2 : pisciculture
Provedor de dados: 5
Autores: Gaignon, Jean-louis; Mazurie, Joseph; Loarer, Ronan; Youenou, Gilles.
L'étude de zonage des cultures marines qui a été confiée à l'Ifremer a été envisagée dans un premier temps comme la collection d'éléments disponibles, fruit de travaux passés. Cette approche s'est avérée peu pertinente pour la pisciculture. En effet, les travaux déjà réalisés datent de plusieurs années (1975 - 1985). Depuis, les techniques d'élevage, les structures de production et donc les critères de choix de sites ont considérablement évolué. Les sites retenus étaient principalement littoraux, caractérisés par un haut degré de protection vis-à-vis des tempêtes. Les site-types étaient le moulin à marée, le fond de baie.
Tipo: Text
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00083/19401/16994.pdf

Rapport de mission International Conference on Shellfish Restoration, 2011, Stirling (Ecosse)
Provedor de dados: 5
Autores: Mazurie, Joseph.
The 14th International Conference on Shellfish Restoration (ICSR) comes this year to the United Kingdom for the first time in its 26 years history. The conference will be held at the University of Stirling in the heart of Scotland and its title and theme will be “Shellfish: our undervalued resource”. The theme of the conference, “Shellfish: our undervalued resource”, reflects the UK perception of shellfish as something that is good to eat, often in upmarket restaurants. Shellfish fisheries and aquaculture are indeed a very important part of the UK economy; shellfish reefs however form an ecosystem that provides myriad benefits (“ecosystem services”) many of which have been lost through acute fishing pressures, disease, pollution and other factors. On a...
Tipo: Text
Palavras-chave: Coquillages; Restauration; Récif; Chesapeake; Crassostrea; Service écosystémique; Shellfish; Restoration; Reefs; Chesapeake; Wadden Sea; Marine; Crassostrea.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00045/15590/12992.pdf

Croissance des huîtres creuses, Crassostrea gigas, en baie du mont Saint-Michel, avant la restructuration de 2004
Provedor de dados: 5
Autores: Bouget, Jean-francois; Mazurie, Joseph.
This study presents the main results of oyster growth obtained experimentally in 2002 and 2003, in the farming area of Cancale before the leases reorganization of 2004. According to the REMORA monitoring network from 1990 to 2004, the oyster growth in Cancale bay may be characterized by an average annual weight gain (around 30g per year), a rather weak meat content compared to other regional oyster sites, and an exceptional quality of shell (absence of blisters, few Poly do rd). Spatially, the oyster farming area of Cancale shows rather homogeneous performances of breeding, in spite of the muddy southern area. In addition an experimental trial in 2003 allowed to evaluate favourably the potential of the new oyster area of Saint-Benoît : in these...
Tipo: Text
Palavras-chave: Mont Saint Michel; Crassostrea gigas; Growth; Breeding; Oyster; Mont Saint Michel; Crassostrea gigas; Croissance; Ostréiculture; Huître.
Ano: 2005
URL: http://archimer.ifremer.fr/doc/2005/rapport-1637.pdf

Use of satellite data to predict shellfish growth
Provedor de dados: 5
Autores: Bacher, Cedric; Thomas, Yoann; Alunno-bruscia, Marianne; Mazurie, Joseph.
The advent of remote sensing in biological oceanography in the 1990s offers a very powerful tool able to capture temporal and spatial changes of chlorophyll-a concentration and temperature at several temporal scales (decadal, inter annual and seasonal), and at local as well as at the oceanic scale. Such data have the advantage over traditional measurements of being inexpensive, spatially extensive, automatically repeated in time and validated. They have been very useful for phytoplankton monitoring in relation to eutrophication in coastal waters and the number of applications in the field of coastal zone management is growing. We present here a real case application to shellfish aquaculture. We assessed the potential for mussel aquaculture in Mont Saint...
Tipo: Text
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00083/19459/17093.pdf

Characterization of Cr. gigas oysters mortalities according to the French Ifremer/REMORA monitoring network ; with complements from phytoplankton and meteorogolical data
Provedor de dados: 5
Autores: Fleury, Pierre-gildas; Mazurie, Joseph; Ropert, Michel; Soletchnik, Patrick; Le Coz, Florence.
The wide range of data from the French Ifremer/REMORA network, collected since 1993 allow a global characterization of mortalities of 1-year old and 2-years old cupped oysters Crassostrea gigas, that are cultivated in the main French oyster areas (Fleury et al, 2003), and thus a better understanding of the causes of these mortalities (Ifremer /MOREST project).  The average annual mortalities on intertidal sites range from 10 to 20%. Most of the mortalities take place in Spring and Summer. 1-year oyster mortalities occur in Marennes and several sites in Brittany whilst 2-years oyster mortalities occur in the same sites and in baie des Veys (Normandy). In addition, 2-years oyster mortalities appear more variable according to different annual surveys....
Tipo: Text
Palavras-chave: Meteorolgical factors; Phytoplankton; REMORA; Mortalities; Oysters; Crassostrea gigas.
Ano: 2008
URL: http://archimer.ifremer.fr/doc/2008/acte-4547.pdf

World Aquaculture 1993 : 24ème congrès de la World Aquaculture Society - 17ème congrès de l'European Aquaculture Society - 2ème congrès mixte WAS-EAS, Torremolinos, Espagne, 24- 28 mai 1993
Provedor de dados: 5
Autores: Bodoy, Alain; Calvas, Jacques; Fuchs, Jacques; Lacroix, Denis; Mazurie, Joseph; Paquotte, Philippe; Rene, Francois.
Ce document est un rapport de mission commun des 44 chercheurs du groupe IFREMER ayant participé au 2ème congrès mixte de la World Aquaculture Society et de l'European Aquaculture Society qui s'est tenu à Torremolinos, en Espagne, du 24 au 28 mai 1993.
Tipo: Text
Ano: 1993
URL: https://archimer.ifremer.fr/doc/00021/13207/10259.pdf

REMOR : Organisation du réseau de suivi de la croissance de l'huître creuse - Principaux résultats depuis 1993
Provedor de dados: 5
Autores: Goyard, Emmanuel; Baud, Jean-pierre; Claude, Serge; Le Moine, Olivier; Maurer, Daniele; Mazurie, Joseph; Ruelle, Francois; Vercelli, Catherine.
The Aquaculture Resources Department's mollusc network (REMORA) federates six coastal Ifremer laboratories. Since 1993, REMORA has implemented a unique national protocol to account for the variability in the growth of Pacific oysters farmed in 39 sites within the main production areas, from Normandy to the Mediterranean Sea. In 1995, the goal of the network was expanded to include monitoring of a second age class. To do so, the protocol developed for adults was adapted to monitor juveniles. The data, organised in Excel worksheets with a specific application written in Visual Basic, allows for inter-station and inter-annual comparisons and thereby constitutes a database of interest to oyster farmers, scientists and administrative personnel.
Tipo: Text
Palavras-chave: REMORA; Crassostrea gigas; Huîtres; Croissance.
Ano: 1997
URL: http://archimer.ifremer.fr/doc/1997/acte-3255.pdf

Les risques conchylicoles en Baie de Quiberon. Troisième partie : le risque d’hypoxie pour l’huître creuse Crassostrea gigas. Rapport final du projet Risco 2010-2013
Provedor de dados: 5
Autores: Stanisiere, Jean-yves; Mazurie, Joseph; Bouget, Jean-francois; Langlade, Aime; Gabellec, Raoul; Retho, Michael; Quinsat, Kevin; Leclerc, Emilie; Cugier, Philippe; Dussauze, Morgan; Menesguen, Alain; Dumas, Franck; Gohin, Francis; Augustin, Jean-marie; Ehrhold, Axel; Sinquin, Jean-marc; Goubert, Evelyne; Dreano, Alain.
The project “Risco”, supported by the “Pôle Mer” and funded by the Regional Council of Brittany, deals with specific risks of mortality of oysters, Crassostrea gigas, cultivated on the bottom, in a subtidal bay of South Brittany : the bay of Quiberon (56, France). Massive mortalities of oysters were reported in summer 2006 in this bay, exclusively located in the deep muddy area with a positive gradient eastward. A validated biogeochemical model was applied in order to simulate the dissolved oxygen over 2000-2006 : it revealed several episodes of hypoxia, more or less intense according to years, but with the same spatial distribution. This approach proved 2006 to be the most hypoxic year since 2000. The hypoxia was due to a rare conjunction of 3 factors :...
Tipo: Text
Palavras-chave: Baie Quiberon; Crassostrea gigas; Huître; Mortalité; Croissance; Hypoxie; Oxygène; Modèle; Upwelling; Loire; Vilaine; Quiberon; Crassostrea gigas; Oyster; Mortality; Growth; Hypoxia; Oxygen; Model; DEB; Upwelling; Loire; Vilaine.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00180/29131/27535.pdf

Endurcissement du naissain d’huîtres creuses, Crassostrea gigas par le niveau d’exondation ou la densité d’élevage : récapitulatif d’essais conduits entre 2004 et 2007 en rivière d’Auray (56), pour réduire les mortalités estivales
Provedor de dados: 5
Autores: Mazurie, Joseph; Bouget, Jean-francois; Langlade, Aime; Claude, Serge.
This report summarizes a list of husbandry experiments conducted between 2004 and 2007 so as to reduce the summer mortalities of the oyster Crassostrea gigas by farming practices. The Japanese technique so‐called “hardening”, based on nursing the young oysters (less than 1 year‐old) in intertidal areas with high air exposure, is tested and adapted. Significant improvements of survival rates (e.g. 60% survival instead of 40% survival rate) have been obtained by transferring the spat only a few month (between march and june‐july) on “high” inter‐tidal farming plots (up to 40% of mean air exposure time). In such conditions, growth is transiently reduced, but a compensatory growth seems to happen when oysters are transferred back on low concessions. Another...
Tipo: Text
Palavras-chave: Huître; Crassostrea gigas; Mortalité; Endurcissement; Exondation; Densité; Oyster; Crassostrea gigas; Mortality; Hardening; Air exposure; Density.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00042/15350/12705.pdf

Modelling spatio-temporal variability of Mytilus edulis (L.) growth by forcing a dynamic energy budget model with satellite-derived environmental data
Provedor de dados: 5
Autores: Thomas, Yoann; Mazurie, Joseph; Alunno-bruscia, Marianne; Bacher, Cedric; Bouget, Jean-francois; Gohin, Francis; Pouvreau, Stephane; Struski, Caroline.
In order to assess the potential of various marine ecosystems for shellfish aquaculture and to evaluate their carrying capacities, there is a need to clarify the response of exploited species to environmental variations using robust ecophysiological models and available environmental data. For a large range of applications and comparison purposes, a non-specific approach based on ‘generic’ individual growth models offers many advantages. In this context, we simulated the response of blue mussel (Mytilus edulis L.) to the spatio-temporal fluctuations of the environment in Mont Saint-Michel Bay (North Brittany) by forcing a generic growth model based on Dynamic Energy Budgets with satellite-derived environmental data (i.e. temperature and food). After a...
Tipo: Text
Palavras-chave: Mussel; DEB; SeaWifs; Aquaculture; Site Selection; Resource Management.
Ano: 2011
URL: http://archimer.ifremer.fr/doc/00037/14836/14537.pdf

Surveillance des maladies et étude des mortalités anormales des coquillages - Synthèse des Résultats 1994-1998
Provedor de dados: 5
Autores: Martin, Anne-genevieve; Mazurie, Joseph; Tige, Gilbert; Hirata, Toshio; Kuntz, Gregoire; Le Coguic, Marie-jo; Le Mouroux, Guylaine.
Dans le cadre du réseau de surveillance de la pathologie des mollusques, ce rapport fait la synthèse des suivis et travaux réalisés par la cellule zoosanitaire de la Trinité sur mer, sur l'ensemble des secteurs d'élevage et de gisements de Bretagne, durant les cinq dernières années. Des hypothèses sont proposées pour expliquer les différents phénomènes de mortalités sur diverses espèces de mollusques observées
Tipo: Text
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00080/19151/16746.pdf

Evolution et estimation des mortalités estivales de naissain d'huître creuse (Crassostrea gigas) en baie de Quiberon, de mai à septembre 1998.
Provedor de dados: 5
Autores: Martin, Anne-genevieve; Fleury, Pierre-gildas; Tige, Gilbert; Hirata, Toshio; Le Coguic, Marie-jo; Langlade, Aime; Mazurie, Joseph; Ostréiculteurs de la baie de Quiberon.
La question des mortalités estivales de naissains d'huîtres creuses en baie de Quiberon a été abordée selon deux approches complémentaires, l'une plus temporelle, avec le suivi estival régulier de quelques semis, l'autre plus spatiale avec une estimation en plongée des survies en fin d'été d'un plus grand nombre de semis répartis à travers la baie. Le suivi de l'évolution des semis a permis de dater et de quantifier les mortalités estivales sur plusieurs périodes (juin et août essentiellement) ; mais il n'a pas permis d'en identifier les causes. Le rôle des pathogènes, notamment, n'est pas défini. Par ailleurs, l'estimation spatiale des mortalités en fin d'été met en évidence des mortalités nettement différenciées entre les semis (entre 6 et 48%). Parmi...
Tipo: Text
Palavras-chave: Huître creuse; Crassostrea gigas; Naissain; Quiberon; Mortalité; Croissance; Vitalité; Pathologie; Herpès-virus; Pacifie cupped oyster; Crassostrea gigas; Spat; Quiberon (France); Mortality; Growth; Vitality; Pathology; Herpes-virus.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00102/21326/18949.pdf

Système expérimental de surveillance biologique de la qualité de l'eau par des huîtres (Crassostrea gigas) et des moules (Mytilus edulis)
Provedor de dados: 5
Autores: Bouget, Jean-francois; Mazurie, Joseph.
Un concept original de surveillance biologique de la qualité de l'eau a été développé de 1994 à 1998. Les travaux de recherche ont été réalisés en partie dans le cadre de l'étude de l'écosystème de la rade de Brest au sein d'un groupe de travail, sur les indices biologiques, dirigé par l'Université de Bretagne Occidentale (UBO). Une nouvelle génération de valvomètre capable de détecter en temps réel des réactions valvaires anormales et de déclencher un prélèvement automatique d'eau est mis au point. Des enregistrements sont réalisés in-situ sur différents sites pour étudier les réactions valvaires. Des études toxicologiques au laboratoire sont également menées sur la réponse valvaire des bivalves à diverses substances toxiques : métaux et pesticides. Par...
Tipo: Text
Palavras-chave: Consommation d'oxygène; Valvomètre; Biocapteur; Mollusques bivalves.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00102/21314/18934.pdf

Réseau de suivi de la croissance de l'huître creuse en Bretagne. Synthèse des quatre années 1989 à 1992
Provedor de dados: 5
Autores: Littaye-mariette, Anne; Mazurie, Joseph.
Since 1989, an homogeneous Crassostrea gigas oyster stock has been distributed once a year on several rearing sites in Brittany (3 populations per site). The main quantitative and qualitative growth descriptors, which reflect water quality effects during the monitoring period, are estimated at the end of each year. The 1989-1992 analysis prompted us to describe various growth responses correlated to biotops: oyster production in open areas influenced by oceanic waters was fairly constant in quality, including size and Polydora sp. infestation. In contrast, oysters in estuarine areas, partly affected by eutrophication (e.g., Aber Benoît, Pen Bé), or with a low carrying capacity, were characterized by weight and Polydora sp. infestation heterogeneity. These...
Tipo: Text
Palavras-chave: Polydora; Condition Index; Mortality; Growth; Monitoring; Oyster; Crassostrea gigas; Brittany; Polydora; Indice de condition; Mortalité; Croissance; Réseau; Huître; Crassostrea gigas; Bretagne.
Ano: 1993
URL: http://archimer.ifremer.fr/doc/1993/rapport-1639.pdf

Le réseau REMORA de suivi de la croissance des huîtres creuses Crassostrea gigas ; analyse des premières tendances (1993-98) en Bretagne.
Provedor de dados: 5
Autores: Fleury, Pierre-gildas; Goyard, Emmanuel; Mazurie, Joseph; Claude, Serge; Bouget, Jean-francois; Langlade, Aime; Le Coguic, Marie-jo.
The network IFREMER/REMORA has watched every year, since 1993, from February to December, mortality, growth and quality criteria of two oyster class-size ("juveniles" of the first-year c1ass and "adults" of the second year c1ass), distributed among various stations of the French oyster areas. This has provided a quite standard and simple annual assessment of the rearing results, generally tallied with professional observations. From year to year, data series have been obtained, from which mean values (references), chronological trends or spatial differences can be analysed. Results in Brittany, from 1993 to 1998, show that, in a "normal" year, 30 g oysters grow to 60-80 g at the end of the year, with a mortality rate of 10-15%. Mortality occures mainly in...
Tipo: Text
Palavras-chave: REMORA; Bretagne; Huître creuse; Crassostrea gigas; Mortalité; Croissance; Qualité; Polydora; REMORA; Brittany (France); Gigas oyster; Crassostrea gigas; Mortality; Growth; Quality; Polydora.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00113/22386/20081.pdf

Bivalve aquaculture transfers in Atlantic Europe. Part B: Environmental impacts of transfer activities
Provedor de dados: 5
Autores: Brenner, M.; Fraser, Duncan; Van Nieuwenhove, K.; O'Beirn, F.; Buck, B. H.; Mazurie, Joseph; Thorarinsdottir, G.; Dolmer, P.; Sanchez-mata, A.; Strand, O.; Flimlin, G.; Miossec, Laurence; Kamermans, P.
For centuries human populations have moved live shellfish around the world for consumption or aquaculture purposes; being relayed from their area of origin for growout or sale. This is in contrast to the inadvertent anthropogenic spreading of species via e.g. ballast waters. There are inherent risks associated with transfer of shellfish including introducing of alien species, diseases, pests, bacteria and viruses associated with the translocated species in addition to the potential impact on genetic integrity and biodiversity of local stocks. Many examples of severe ecological impacts have been documented worldwide owing to the intentional or unintentional translocation of animals. It is therefore important to develop risk reduction methods which have not...
Tipo: Text
Ano: 2014
URL: http://archimer.ifremer.fr/doc/00174/28573/26964.pdf

Mise au point d'un protocole standard utilisant la cuisson au four à micro-ondes pour la mesure d'un indice de condition de moules
Provedor de dados: 5
Autores: Besse, Thimothee; Mazurie, Joseph.
Dans le cadre des programmes des analyses biométriques sont effectuées régulièrement sur des lots de moules. Le taux de remplissage est alors mesuré, pour suivre la croissance de celles-ci. La chair et le poids de coquille sont alors mesurés indépendamment du poids entier. Toutefois il est apparu nécessaire d'accélérer ces mesures par une méthode facilitant l'écoquillage des moules fraîches. Un passage des moules au micro-ondes induit une ouverture des valves et un décollement de la chair, et il est alors possible de traiter rapidement des lots entiers.
Tipo: Text
Palavras-chave: Protocole expérimental; Indice de condition; Poids de chair; Moules; Mytilus edulis; Micro- ondes.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/00014/12479/9325.pdf

Bilan des études méthodologiques 2007 pour le projet d'analyse des risques de mortalité d'huîtres en baie de Quiberon
Provedor de dados: 5
Autores: Fleury, Pierre-gildas; Bouget, Jean-francois; Langlade, Aime; Mazurie, Joseph; Philippon, Xavier.
(subtidal on-bottom rearings), has been the year of the gestation for the RISCO-QB project (Risks in shellfish farming, in baie de Quiberon). Discussions with various potential partners have resulted in the project drafting with 3 main objectives : - estimation of the trophic capacity of the bay and adjustment of the rearing biomass, - impact of sediment nearness upon on-bottom technique and adjustment of the rearing practices, - appraisal of the impact of these 2 factors (trophic capacity and sediment nearness) on the budget of the farming companies and their consequences in the management of the mortality risk. Concurrently with the project writing, pre-studies, mainly methodological, have been conducted in the bay since 2007 in order to investigate the...
Tipo: Text
Ano: 2008
URL: http://archimer.ifremer.fr/doc/00075/18674/16220.pdf

Determination of risk factors for herpesvirus outbreak in oysters using a broad-scale spatial epidemiology framework
Provedor de dados: 5
Autores: Pernet, Fabrice; Fuhrmann, Marine; Petton, Bruno; Mazurie, Joseph; Bouget, Jean-francois; Fleury, Elodie; Daigle, Gaetan; Gernez, Pierre.
Marine diseases have major impacts on ecosystems and economic consequences for aquaculture and fisheries. Understanding origin, spread and risk factors of disease is crucial for management, but data in the ocean are limited compared to the terrestrial environment. Here we investigated how the marine environment drives the spread of viral disease outbreak affecting The Pacific oyster worldwide by using a spatial epidemiology framework. We collected environmental and oyster health data at 46 sites spread over an area of 300 km2 along an inshore-offshore gradient during an epizootic event and conducted risk analysis. We found that disease broke out in the intertidal farming area and spread seaward. Mortalities and virus detection were observed in oysters...
Tipo: Text
Ano: 2018
URL: https://archimer.ifremer.fr/doc/00450/56130/57670.pdf

Anomalies des coquilles d'huîtres creuses Crassostrea gigas observées sur le littoral français en mai-juin 1989 dues au ver Polydora et aux peintures antisalissures
Provedor de dados: 5
Autores: Catherine, Martial; Blateau, Dominique; Mazurie, Joseph; Le Bec, Claude.
La recrudescence du ver Polydora dans les coquilles d'huîtres creuses observée dès l'été 1988 a pour principale conséquence le développement parfois très important de formations variqueuses et des chambres à vase à l'intérieur des huîtres, ce qui est très préjudiciable à leur qualité commerciale. Le bilan de l'infestation des coquilles d'huîtres par le ver Polydora sur le littoral normand et atlantique en mai et juin 1989 montre que les secteurs ostréicoles les plus touchés se situent à proximité de la Loire et de la Vilaine. Divers traitements des huîtres contre le Polydora sont possibles. Les meilleurs résultats sont obtenus par la combinaison de l'action de la saumure et d'un assec de 24 heures. L'examen du chambrage à gel colloïdal dans les huîtres...
Tipo: Text
Palavras-chave: Polydora; Huîtres creuses; Chambrage; Galeries; Traitement; Peintures marines; TBT; Réglementation.
Ano: 1990
URL: http://archimer.ifremer.fr/doc/00104/21491/19072.pdf

Stratégies d'échantillonnage pour l'estimation des stocks de moules sur bouchots (exemple dans le Pertuis Breton en 1988)
Provedor de dados: 5
Autores: Mazurie, Joseph; Dardignac-corbeil, Marie-josé.
A sampling strategy for the estimation of mussels stocks on "bouchots" was elaborated in 1987 and 1988 in the Pertuis Breton area, along the french atlantic coast. This strategy optimizes estimations of number of posts per bouchot, heights of posts wearing mussels, sections of posts and mussels, and eventually densities of mussels, from cost/precision and minimum uptake considerations. The adopted plan is compared to others and the allocation of sampling efforts is optimized.
Tipo: Text
Ano: 1988
URL: http://archimer.ifremer.fr/doc/00391/50200/50824.pdf

Estimation des stocks de moules dans le Pertuis Breton en 1988
Provedor de dados: 5
Autores: Dardignac-corbeil, Marie-jose; Mazurie, Joseph.
Following a study achieved in 1987, a 3 stage sampling plan was adopted to estimate the biomass of mussels cultivated on the stakes of the "Pertuis Breton". The estimation carried out in 1988 was extended to the whole Pertuis Breton and the biomass was assesssed to 14000 tons with a precision of 5,5 %.
Tipo: Text
Palavras-chave: Moules; Bouchots; Biomasse; Sampling; Pertuis Breton; Mussels; Biomass; Sampling.
Ano: 1989
URL: http://archimer.ifremer.fr/doc/00045/15588/12990.pdf

Stratégie d'échantillonnage en conchyliculture
Provedor de dados: 5
Autores: Mazurie, Joseph.
Les stratégies d'échantillonnage mises en œuvre à l'IFREMER dans le domaine du contrôle de la qualité des produits et du milieu conchylicole, 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
Ano: 1988
URL: http://archimer.ifremer.fr/doc/00107/21793/19369.pdf

Nutrition and reproduction are key parameters in the interaction process leading to Crassostrea gigas oyster summer mortality in France
Provedor de dados: 5
Autores: Samain, Jean-francois; Degremont, Lionel; Soletchnik, Patrick; Ropert, Michel; Bedier, Edouard; Mazurie, Joseph; Mazurie, Joseph; Martin, Jean-louis; Moal, Jeanne; Mathieu, Michel; Pouvreau, Stephane; Lambert, Christophe; Escoubas, Jean-michel; Nicolas, Jean-louis; Le Roux, Frédérique; Renault, Tristan; Burgeot, Thierry; Bacher, Cedric; Boudry, Pierre.
Complex interactions between oyster, environment and pathogens were observed during the MOREST (2001-2005) project on summer mortality events of Crassostrea gigas oysters in France. The talk will show how nutrition level increasing reproductive intensity generates a risk for pathogen infection under synergistic effect of temperature and stress. Moreover, a genetic component is associated to specific reproductive performances and spawning behaviour. To better understand origin of such resistance or susceptibility to summer mortality, other characteristics as stress susceptibility, energy management and hemocyte activities of oysters from the two phenotypes were compared. This first comparison suggests interactions between stress, reproduction and defence...
Tipo: Text
Palavras-chave: Genetic; Pathologie; Mortality; Crassostrea gigas; Pacific oyster; Reproduction; Nutrition; Physilogy.
Ano: 2006
URL: https://archimer.ifremer.fr/doc/2006/acte-3467.pdf

Les mortalités d'ormeaux en Bretagne et Normandie : mise en évidence de l'agent causal
Provedor de dados: 5
Autores: Basuyaux, Olivier; Nicolas, Jean-louis; Mazurie, Joseph; Thebault, Anne.
In summer 1997, massive abalone Haliotis tuberculata mortalities are monitored on the coast of Brittany, near Concarneau. They then spread out to the north of Brittany (1998) and to the Norman-Breton Bay in 1999. 60 to 80 % of the abalone populations died without any noticeable symptoms. In 1999, these mortalities reached cultivated abalones at the SMEL hatchery (Blainville). A septicemic bacteria was isolated from every organ (muscle, mucus gland, haemolymph ...) collected from abalones that had just died.
Tipo: Text
Palavras-chave: Haliotis tuberculata; Ormeaux; Pathologie; Mortalités.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/acte-3276.pdf

Les risques conchylicoles en Baie de Quiberon. Première partie : le risque de mortalité virale du naissain d’huître creuse Crassostra gigas. Rapport final du projet Risco 2010-2013
Provedor de dados: 5
Autores: Mazurie, Joseph; Stanisiere, Jean-yves; Langlade, Aime; Bouget, Jean-francois; Dumas, Franck; Treguier, Cathy; Leclerc, Emilie; Ravaud, Emilie; Quinsat, Kevin; Gabellec, Raoul; Retho, Michael; Cochet, Helene; Dreano, Alain.
This study (“Risco”), implicating both industry, socio-economic experts and biologists, was funded by the Regional Council of Brittany, for 3 years (2010-2013), to investigate upon the origin of oysters (Crassostrea gigas) mortalities in the bay of Quiberon (South Brittany, France). Specific mortalities of adult oysters were recorded in this bay in 2006, whereas mortalities of one year old spat were observed since in 2008 in this bay as at a national scale. The experimental protocol in 2010, including a monthly survey of oyster batches at 15 experimental stations, allowed to assess the risk for one-year oysters, due to viral disease. A clear spatial distribution of this risk was evidenced, with a western area spared from contamination and mortality, and a...
Tipo: Text
Palavras-chave: Baie de Quiberon; Crassostrea gigas; Mortalité; Herpès-virus; OsHV-1; Épidémiologie; Modèle.; Quiberon bay; Crassostrea gigas; Mortality; Herpes-virus; OsHV-1; Epidemiology; Model.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00179/29043/27528.pdf

Etude épidémiologique et écopathologique dans le cadre des mortalités de naissains d'huîtres creuses, Crassostrea gigas
Provedor de dados: 5
Autores: Gaussem, Florian; Thebault, Anne; Mazurie, Joseph; Stanisiere, Jean-yves; Cuzzucoli, Diane; Cochennec-laureau, Nathalie.
Dans le cadre d’une convention Ifremer-DGAL (2010-2011), une étude épidémiologique et écopathologique intégrative a été conduite en Rivière de Pénerf (Morbihan). Elle a permis de mettre en place un outil d’objectivation pour i) l’évaluation des mortalités par une enquête réalisée auprès de tous les professionnels et pour ii) l’acquisition de données sur la biomasse, les stocks présents (élevés et non élevés) et la bathymétrie du site. Une régression logistique multivariée a permis d’ajuster la relation entre ces variables explicatives et d’étudier toutes leurs combinaisons pour comprendre les différences de mortalité déclarées sur les lots de naissains analysés. Le meilleur modèle prend en compte l’origine du naissain (écloserie, naturel), la date de...
Tipo: Text
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00119/22996/20827.pdf

Journées conchylicoles 1999 Ifremer Nantes les 24 et 25 mars
Provedor de dados: 5
Autores: Mazurie, Joseph; Lassalle, Elisabeth.
Ce rapport synthétise les communications présentées lors des "journées conchylicoles" sur les travaux scientifiques de l'Ifremer en soutien aux activités conchylicoles.
Tipo: Text
Palavras-chave: Pathologie; Mortalité; Immunologie; Ecloserie; Génétique; Ecophysiologie; Elevages; Conchyliculture.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00200/31112/29523.pdf

An ecosystem-based approach and management framework for the integrated evaluation of bivalve aquaculture impacts
Provedor de dados: 5
Autores: Cranford, Peter J.; Kamermans, Pauline; Krause, Gesche; Mazurie, Joseph; Buck, Bela H.; Dolmer, Per; Fraser, David; Van Nieuwenhove, Kris; O'Beirn, Francis X.; Sanchez-mata, Adoracion; Thorarinsdottir, Gudrun G.; Strand, Oivind.
An ecosystem-based approach to bivalve aquaculture management is a strategy for the integration of aquaculture within the wider ecosystem, including human aspects, in such a way that it promotes sustainable development, equity, and resilience of ecosystems. Given the linkage between social and ecological systems, marine regulators require an ecosystem-based decision framework that structures and integrates the relationships between these systems and facilitates communication of aquaculture-environment interactions and policy-related developments and decisions. The Drivers-Pressures-State Change-Impact-Response (DPSIR) management framework incorporates the connectivity between human and ecological issues and would permit available performance indicators to...
Tipo: Text
Palavras-chave: Bivalve aquaculture management; Ecosystem-based approach; DPSIR framework; Indicators; Thresholds; Benthic effects; Pelagic effects; Social-ecological systems.
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00099/20997/18624.pdf

World aquaculture 1993, Torremolinos, Espagne, 24-28 mai 1993. Rapport de mission de l'IFREMER
Provedor de dados: 5
Autores: Bodoy, Alain; Calvas, Jacques; Fuchs, Jacques; Lacroix, Denis; Mazurie, Joseph; Paquotte, Philippe; Rene, Francois.
Tipo: Text
Ano: 1993
URL: http://archimer.ifremer.fr/doc/00040/15136/12475.pdf

L'huître creuse Crassostrea gigas en Bretagne. Résultats du réseau de suivi de 1990
Provedor de dados: 5
Autores: Le Bec, Claude; Mazurie, Joseph.
The year 1990 is the second of a regional monitoring program on production assessment of Crassostrea in Britlany. 9 sites have been tested with 3 stations per site and 3 oysters bags in each station, at 3 different densities : 170, 210 and 250 oysters per bag. 18 month old oysters stocked in bags in march were analyzed 43 weeks later, by variables concerning growth, survival, quality... The growth was lower at higher densities, more or less according to sites. As previously, differences between sites and stations are observed, with some confirmations (higher mortalities in Aber Benoît site) and also evolutions (growth and Polydora infestations improvement in Pen Bé site).
Tipo: Text
Palavras-chave: Bretagne; Crassostrea gigas; Mortalité; Indice de condition; Polydora; ACP; Brittany; Crassostrea gigas; Mortality; Condition index; Polydora; Factorial analysis.
Ano: 1992
URL: http://archimer.ifremer.fr/doc/00102/21318/18938.pdf

Elevage de moules en poche sur estran dans l'Aber Wrach. 1991-1992.
Provedor de dados: 5
Autores: Blateau, Dominique; Mazurie, Joseph; Barret, Jean.
Un suivi expérimental d'élevage de moules en poches a permis de classer entre elles les différentes stations de l'Aber Wrach, et d'optimiser la charge des poches (4 kg par poche préférable à des charges plus élevées).  Cependant, la croissance a cessé à partir du mois de septembre et l'indice de condition s'est dégradé, alors que sur un site voisin ou l'année précédente sur le même site, les résultats d'élevage étaient satisfaisants. Les paramètres d'environnement disponibles laissent penser à un déficit trophique, sans que cette interprétation soit totalement satisfaisante (pousse des huîtres sur le même site).
Tipo: Text
Ano: 1992
URL: http://archimer.ifremer.fr/doc/00107/21780/19354.pdf

Integration of shellfish farming activies in three French coastal environments : Mont Saint-Michel Bay, Gulf of Morbihan, and Marennes-Oleron Bay
Provedor de dados: 5
Autores: Mazurie, Joseph; Le Mao, Patrick; Camus, Patrick; Bacher, Cedric; Goulletquer, Philippe.
Integration of shellfish farming along the French shoreline (around 5500 km) has been progressive, as marine bivalve culture is a traditional activity in our country. The history of mussel culture relates that the "bouchot" technique (intertidal culture on wooden poles, producing annually around 60,000 tons) was developed as early as the XIIIth century, by a refugee attempting to capture birds by sticking branches of brushwood along the shore. The European flat oyster, Ostrea edulis, already appreciated at the Roman period, was first cultivated in France after Victor Coste introduced the technique of spat collection at the end of the XIXth century. The Pacific cupped oyster, genus Crassostrea, now the most-cultivated in France (around 120,000 tons marketed...
Tipo: Text
Palavras-chave: Trophic capacity; Trophic resource; Nature conservation; Coastal zone management; Biodiversity; Mytilus edulis; Mussels; Integration; Ostrea edulis; Crassostrea gigas; Oysters.
Ano: 2007
URL: http://archimer.ifremer.fr/doc/2007/acte-3400.pdf

REGEMO Réseau Génétique Mollusques. Compte rendu de la réunion des 13 et 14 décembre 1993 - Nantes
Provedor de dados: 5
Autores: Gerard, Andre; Naciri, Yamama; Peignon, Jean-marie; Ledu, Christophe; Phelipot, Pascal; Baud, Jean-pierre; Nourry, Max; Haure, Joel; Coatanea, Denis; Oheix, Jocelyne; Vercelli, Catherine; Chabirand, Jean-michel; Borel, Michel; Maurer, Daniele; Heurtebise, Serge; Garnier, Jacqueline; Martin, Anne-genevieve; Tige, Gilbert; Mazurie, Joseph; Langlade, Aime.
Cette réunion des membres du Réseau Génétique Mollusques avait pour objet de faire un bilan provisoire des actions en cours et surtout de mettre en place les protocoles et les calendriers du début de l'année 1994. La première demi-journée a été réservée à un exposé de Yamama NACIRI sur les bases de la Génétique Quantitative et ses applications dans le cadre des programmes de sélection des mollusques.La deuxième demi-journée a été consacrée au bilan des actions de 1993. Les représentants de chaque site, intervenant dans une opération du réseau en 1993, ont fait une présentation orale de leurs résultats. Un résumé de chaque intervention vous est fourni dans ce document. Il est important de souligner que tous ces bilans sont provisoires, en premier lieu parce...
Tipo: Text
Palavras-chave: Génétique; Sélection génétique; Huître plate; Ostrea edulis; Croissance; Génétique population.
Ano: 1993
URL: http://archimer.ifremer.fr/doc/00049/15982/13425.pdf

Un scénario pour les mortalités d'huîtres en baie de Quiberon
Provedor de dados: 5
Autores: Mazurie, Joseph; Stanisiere, Jean-yves.
Tipo: Text
Ano: 2012
URL: http://archimer.ifremer.fr/doc/00149/26015/24115.pdf

Réseau de veille zoosanitaire des mollusques REPAMO - Rapport d'activité pour l'année 1997
Provedor de dados: 5
Autores: Berthe, Franck; Pichot, Yves; Chollet, Bruno; Thebault, Anne; Kuntz, Gregoire; Tige, Gilbert; Thebault, Anne; Fleury, Pierre-gildas; Hirata, Toshio; Le Coguic, Yvette; Renault, Tristan; Lipart, Cecile; Grizel, Henri; Joly, Jean-pierre; Mazurie, Joseph; Baud, Jean-pierre; Goulletquer, Philippe; Dreno, Jean-paul; Buestel, Dominique.
Le réseau de veille zoosanitaire des mollusques, REPAMO, a été créé en 1992 afin de protéger les espèces d'intérêt économique des maladies susceptibles de les affecter. En effet, de même que les autres productions animales, la conchyliculture est frappée par diverses maladies dont certaines se comportent comme des facteurs limitants de la qualité ou de la quantité des productions. L' histoire de l'ostréiculture française a connu de tristes expériences en la matière, notamment dans les années 70 pour l' huître creuse portugaise, Crassostrea angulata ou encore pour l'huître plate, Ostrea edulis. En fait, nous ne disposons que de très peu de possibilités de protéger les mollusques bivalves vis à vis des maladies infectieuses. D' une part, les traitements,...
Tipo: Text
Palavras-chave: Réseau surveillance; Pathologie; Mollusques bivalves; Mortalité.
Ano: 1998
URL: http://archimer.ifremer.fr/doc/00098/20901/18521.pdf

Bilans depuis 1999 et évolution de la stratégie du REPAMO
Provedor de dados: 5
Autores: Thebault, Anne; Martin, Anne-genevieve; Pichot, Yves; Chollet, Bruno; Robert, Maeva; Le Coguic, Yvette; Tige, Gilbert; Hirata, Toshio; Mazurie, Joseph; Le Saux, Jean-claude; Masson, Nadine; Auby, Isabelle; Maurer, Daniele; Le Roux, Frédérique; Cochennec, Nathalie; Renault, Tristan; Berthe, Franck; Grizel, Henri.
The main objectives of the Mollusc Pathology Network (REPAMO) are to prevent introductions or outbreaks of infectious agents, prevent spread within a farm and especially from one farm to another, to study ways of decreasing the impact of infectious agent and to monitor the development of these pathogens in order to guarantee the health status of oysters exchanged with our commercial partners. On the whole, REPAMO's activities have not changed and include: - monitoring the development of diseases that have to be reported to authorities and carrying out analyses to classify zones: bonamiosis and marteiliosis; - baseline monitoring of farmed and wild populations of bivalve molluscs; - studying cases of abnormal mortality events; - controlling mollusc...
Tipo: Text
Palavras-chave: Mollusques; Réseau surveillance; Pathologie; REPAMO.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/acte-3265.pdf

Les risques conchylicoles en Baie de Quiberon. Deuxième partie : le risque de prédation sur l’huître creuse Crassostrea gigas. Rapport final du projet Risco 2010-2013
Provedor de dados: 5
Autores: Mazurie, Joseph; Stanisiere, Jean-yves; Bouget, Jean-francois; Langlade, Aime; Leclerc, Emilie; Quinsat, Kevin; Herve, Gilles; Augustin, Jean-marie; Ehrhold, Axel; Sinquin, Jean-marc; Meidi-deviarni, Ika; Goubert, Evelyne; Cochet, Helene; Dreano, Alain.
This study (“Risco”), implicating both industry, socio-economic experts and biologists, was funded by the Regional Council of Brittany, for 3 years (2010-2012), to investigate about the causes of oysters (Crassostrea gigas) mortalities in the bay of Quiberon (South Brittany, France). The protocol including both a sonar and video visualization of the bottom, and a monthly survey of 15 experimental oyster structures, allowed to assess the risk due to predation. A clear spatial distribution of the predatory effect was evidenced, with starfish (Asterias rubens and Marthasterias glacialis) predominating in the North-East sector, and boring snails (Ocenebra erinacea and Pterophora inornata) in the South-Center area.. The main mortalities from these predators...
Tipo: Text
Palavras-chave: Baie de Quiberon; Huître; Crassostrea gigas; Risque; Mortalité; Prédation; Étoiles de mer; Bigorneaux perceurs; Risco; Bay of Quiberon; Oyster; Crassostrea gigas; Risk; Mortality; Predation; Starfish; Oyster drills; Risco.
Ano: 2013
URL: http://archimer.ifremer.fr/doc/00180/29130/27534.pdf

L'amélioration des performances de l'huître plate européenne Ostrea edulis par la sélection génétique
Provedor de dados: 5
Autores: Bedier, Edouard; Baud, Jean-pierre; Cochennec, Nathalie; Cornette, Florence; Gerard, Andre; Goyard, Emmanuel; Joly, Jean-pierre; Kopp, Joel; Langlade, Aime; Le Coguic, Yvette; Mazurie, Joseph; Nourry, Max.
The European flat oyster Ostrea edulis has been considered as the traditional French oyster for a very long time and has now nearly disappeared from our farms, as a consequence of the two successive epizootic of the Marteilia refringens parasite and Bonamia ostreae. The actual quasi monoculture of Crassostrea gigas has made necessary the search for a diversification in oyster culture, including the search for a new start of the indigenous flat oyster culture. The Ifremer has been conducting parallel works since 1985 in order to better understand the biology of the parasite as well as to try and select different lines of flat oyster resistant to Bonamia ostreae.
Tipo: Text
Palavras-chave: Bonamia ostrea; Huître plate; Sélection Génétique; Ostrea edulis.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/2001/acte-3274.pdf

Prévention des mortalités estivales de naissain d'huîtres creuses. Expérimentations sur estran (Rivière d'Auray, été 1998). 1 : comparaison de différents lots de naissain. 2 : tentative "d'endurcissement» du naissain".
Provedor de dados: 5
Autores: Mazurie, Joseph; Kuntz, Gregoire; Claude, Serge; Hirata, Toshio.
Cupped oysters, Crassostrea gigas, often suffer abnormal mortalities during summer, at one year of age. Both scientists and professionnals are interested in finding practical methods to reduce these mortalities. The present study tries to answer two questions : 1- are there any differences of summer mortalities among various batches of spat available from spat collection areas (Arcachon and Charentes) ?  2- is it possible to improve summer survivals by wintering the spat at high air exposure locations (« hardening » procedure) ?  The first comparison did not reveal any significant difference between the 16 batches of spat tested (mortalities between 5 % and 30 %).  The second comparison in the same summer conditions was not able to show to any improvement...
Tipo: Text
Palavras-chave: Huître creuse; Mortalité; Estran; Vitalité; Endurcissement; Gigas oyster; Mortality; Intertidal zone; Vitality; Hardening.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00105/21665/19243.pdf

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
Provedor de dados: 5
Autores: 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

Anomalie des coquilles d'huîtres Crassostrea Gigas-Observées sur le littoral français en mai-juin 1989 dues au ver Polydora et aux peintures antisalissures
Provedor de dados: 5
Autores: Catherine, Martial; Blateau, Dominique; Mazurie, Joseph; Le Bec, Claude.
La recrudescence du ver Polydora dans les coquilles d'huîtres creuses observée dès l'été 1988 a pour principale conséquence le développement parfois très important de formations variqueuses et des chambres à vase à l'intérieur des huîtres, ce qui est très préjudiciable à leur qualité commerciale. Le bilan de l'infestation des coquilles d'huîtres par le ver Polydora sur le littoral normand et atlantique en mai et juin 1989 montre que les secteurs ostréicoles les plus touchés se situent à proximité de la Loire et de la Vilaine.
Tipo: Text
Ano: 1990
URL: http://archimer.ifremer.fr/doc/00081/19184/16779.pdf