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| Registros recuperados: 74 | |
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| Garcia, Celine; Arzul, Isabelle; Chollet, Bruno; Francois, Cyrille; Goubet, Anne; Joly, Jean-pierre; Miossec, Laurence; Robert, Maeva; Cuvelier, Nicolas; Lefebvre, Alain; Le Gagneur, Eric; Ropert, Michel; Mouillard, Gilbert; Gerla, Daniel; Le Gal, Dominique; Rocher, Gregory; Langlade, Aime; Bedier, Edouard; Nourry, Max; Martin, Jean-louis; Costantini, Louis; Masson, Jean-claude; Martin, Anne-genevieve. |
| Created in 1986, the REPAMO network (Network of mollusc pathology), is a national zoosanitary surveillance network of shellfish health status along the French coasts. Its activities are in keeping with two European Directives, 91 /67/EEC and 95/70/EC and are a patt of the institutional tasks ofIfremer. The aims of the network are to prevent the introduction and spread of exotic pathogens and to survey the evolution of notifiable pathogens already present in France. The network focused on the survey of listed diseases (bonamiosis and marteiliosis of flat oyster) in two areas under agreement process (Banc de Granville and zone X). In 2004, no sample couId be analysed to these two areas because of the difficulty to obtain flat oysters (sparse oyster beds,... |
| Tipo: Text |
Palavras-chave: Réseau; Surveillance; Pathologie; Mollusques; Coquillages; Etat de santé; Network; Surveillance; Pathology; Molluscs; Shellfish; Health status. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/00086/19702/17343.pdf |
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| Mary, Charlotte; Pien, S; Blin, J.l.; Ropert, Michel. |
| The regional monitoring network REMONOR, relying on the experience of IFREMER's REMORA national network, each year assesses the mortality, growth and quality for two age classes ("adults" = 2 years and "juveniles" = 1 year) of cup oysters, distributed among various farm sites in the main oyster farming sectors of Lower Normandy. This network, led in collaboration by LERN (Environment Resources Laboratory) and SMEL (Coastline Installations Public-Private Entity), this year welcomes a new farm site in Veules les Roses, in Seine Maritime (76), bringing to 18 the total number of monitored sites. For operational reasons, a reduced monitoring protocol was conducted in 2005 on this last farm site, which will not take on the network's standardised protocol until... |
| Tipo: Text |
Palavras-chave: REMORA; Quality; Growth; Mortality; Normandy; REMONOR; Cupped (gigas) oyster; Crassostrea gigas; REMORA; Qualité; Croissance; Mortalité; Basse Normandie; REMONOR; Huître creuse; Crassostrea gigas. |
| Ano: 2006 |
URL: http://archimer.ifremer.fr/doc/2006/rapport-2212.pdf |
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| Ropert, Michel; Blin, J.l.; Cornette, Florence; Pacary, S; Pien, S; Leganeur, E; Kopp, Joel; Richard, O. |
| Since 1998, a growth and quality monitoring study of reared molluscs has been developped as part of a close collaboration between the Shellfish Research Laboratory of Normandy (IFREMER Port-en-Bessin, Calvados) and the SMEL (Syndicat Mixte d'Expansion du Littoral) Experimental Centre (Blainville, Manche). REMONOR (REseau MOllusque de NORmandie) is based on the experience gained through the national monitoring network REMORA, which protocol has been entirely applied. Adults and spat of Pacific oysters Crassostrea gigas were placed in 13 stations all along the oysters rearing areas of Normandy. These oysters had the same origin and history (i.e. age and weight) until they were dispatched on the 13 stations. 4 essential criteria were used to monitor rearing... |
| Tipo: Text |
Palavras-chave: REMORA; Quality; Growth; Mortality; Normandy; REMONOR; Crassostrea gigas; REMORA; Croissance qualité; Mortalité; Basse Normandie; REMONOR; Crassostrea gigas. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/2000/rapport-2248.pdf |
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| Le Goff, Ronan; Ropert, Michel; Scolan, Pierre; Garric-perales, Julie; Nicet, Jean-benoit; Cambert, Harold; Turquet, Jean. |
| Le présent projet "Bon état", mené entre décembre 2008 et octobre 2010 dans le cadre d’une convention Etat-Diren de La Réunion/Ifremer, et en partenariat avec l’Arvam, Pareto Ecoconsult et le GIP Réserve Naturelle Marine de La Réunion, avait pour objectifs : - de caractériser les peuplements benthiques des pentes externes des récifs lagonaires de La Réunion - d’identifier les études et données déjà acquises à La Réunion dans les domaines de l’hydrologie, de la chimie marine, des peuplements benthiques…, et pertinentes pour caractériser les masses d’eau DCE, - d’évaluer l’intérêt local des indicateurs DCE développés en métropole, et, en cas de besoin, de bâtir des indicateurs adaptés localement, - de commencer à définir les réseaux pérennes de suivi... |
| Tipo: Text |
Palavras-chave: DCE à La Réunion; Réseaux de surveillance; Contrôle de surveillance; Indicateurs d’état du milieu marin; Hydrologie marine; Chimie marine; Benthos de substrat meuble; Benthos de substrat dur. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/00039/15013/12339.pdf |
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| Degremont, Lionel; Boudry, Pierre; Ropert, Michel; Samain, Jean-francois; Bedier, Edouard; Soletchnik, Patrick. |
| This study investigated the effects of age (first or second summer of life) and environment (three study sites on French coasts) on summer mortality in Crassostrea gigas, using three generations of oysters produced during the Morest project. For each generation, two groups of oysters, selected either as 'resistant' (R) or 'susceptible' (S) to summer mortality at the age of 6 months in Rivière d'Auray (RA, South Brittany), were evaluated. In Ronce (Marennes-Oléron Bay) and RA, R oysters had low mortality during their first and second summers, while mortality was higher during the second summer in Baie des Veys (BDV, Normandy). In RA, S oysters exhibited higher mortality during their first summer than during their second, while the opposite result was found... |
| Tipo: Text |
Palavras-chave: Summer mortality; Age; Environment; Genetic; Crassostrea gigas. |
| Ano: 2010 |
URL: http://archimer.ifremer.fr/doc/2009/publication-6972.pdf |
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| Mouquet, Pascal; Bajjouk, Touria; Maurel, Laurence; Cebeillac, Alexandre; Le Goff, Ronan; Ropert, Michel. |
| Cet atlas présente les résultats de l'exploitation d’images hyperspectrales et de données Lidar à des fins de cartographie des plateformes récifales de la Réunion. Les méthodes mises en œuvres (traitement du signal, classification, démélangeage spectral, ...) ont permis de générer différents produits cartographiques à haute résolution parmi lesquels des images en réflectance et des fonds marins (jusqu'à des profondeurs supérieures à 30 m), un MNT bathymétrique haute résolution (40 cm) de la plate-forme récifale, des cartes de synthèse permettant d'appréhender qualitativement et quantitativement les taux de couverture en algues, sable, corail et herbier. En intégrant l'ensemble de ces informations, un indicateur surfacique, proxi de la "vitalité... |
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| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00185/29653/28095.pdf |
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| Ropert, Michel; Duval, Magali; Maurel, Laurence; Vermenot, Coralie; Mouquet, Pascal; Nicet, Jean Benoit; Talec, Pascal; Le Goff, Ronan. |
| Le projet "Bon Etat II : actualisation de l’état des lieux du SDAGE, volet eaux côtières réunionnaises" a pour objectif : - de réexaminer le découpage des masses d’eau littorales pour la DCE à La Réunion, - de parachever la définition de l’ensemble des suivis des réseaux du contrôle de surveillance de la DCE à La Réunion, ce qui comprend l’identification et la bancarisation des données déjà acquises localement, et utiles à la DCE (et notamment des données acquises en zones coralliennes aujourd’hui stockées dans le logiciel CoReMo3), la définition (ou l’adaptation) d’indicateurs pertinents, le positionnement des points de suivi au sein des masses d’eau, et la fixation des fréquences de suivi, - de réactualiser l’état des lieux du SDAGE réalisé, également à... |
| Tipo: Text |
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| Ano: 2012 |
URL: http://archimer.ifremer.fr/doc/00168/27943/26235.pdf |
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| Ropert, Michel. |
| Depuis 1986, une population de l'annélide tubicole Lanice conchilega (Polychète) se développe et prolifère sur le site conchylicole de Grandcamp-Maisy (Baie des Veys), en association avec une accélération des processus de sédimentation liés à la présence des structures tabulaires ostréicoles. La capacité de cet annélide à développer un mode alimentaire suspensivore en fait un compétiteur trophique potentiel de l'huître creuse Crassostrea gigas. L'objectif de ce travail est de réaliser un premier bilan global de l'impact de cette population de Lanice sur l'activité conchylicole du secteur. Dans un premier temps, nous avons pu mettre en évidence et quantifier expérimentalement son activité suspensivore : il est en effet susceptible de retenir des particules... |
| Tipo: Text |
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| Ano: 1996 |
URL: http://archimer.ifremer.fr/doc/00450/56173/57720.pdf |
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| Faury, Nicole; Geairon, Philippe; Moal, Jeanne; Pouvreau, Stephane; Razet, Daniel; Ropert, Michel; Soletchnik, Patrick. |
| Proximate biochemical analysis (proteins, lipids and carbohydrates) are performed on a regular basis by the various laboratories fom the Aquaculture Resources Directorate. Methods initially developed to analyse hydrological parameters were firstly transfered to assess meat components.1t appears now important to review and update the commonly used methods (Lowry et al., (1951), Dubois et al.,(l956), Marsh et Weinstein, (1966)), for our specifie purposes. A round table was organized to facilitate discussion among researchers and technicians from both Directorates 'Aquaculture Resources' and 'Product Valorization'and external partners, University of Caen. Several communications reviewing former and recent studies were done. Colleagues from the Directorate... |
| Tipo: Text |
Palavras-chave: Glycogen; Carbohydrates; Lipids; Proteins; Methods comparison; Proximate biochemical composition; Glycogène; Carbohydrates; Lipiedes; Protéines; Comparaison méthodes; Composition biochimique. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/2003/rapport-6378.pdf |
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| 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 |
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| Vermenot, Coralie; Quimbert, Erwann; Satra Le Bris, Catherine; Ropert, Michel. |
| Dans le cadre de l’élaboration de l’Atlas de sensibilité du littoral aux pollutions marines, L’IFREMER a souhaité mettre à disposition des institutions un outil permettant d’accéder à l’ensemble des informations cartographiques ayant permis l’élaboration de cette annexe technique du dispositif spécifique POLMAR/TERRE. Le portail Sextant, infrastructure de données géoréférencées marines et littorales, permettant la mise en commun et le partage de l‘information géographique, permet de répondre à ces exigences. |
| Tipo: Text |
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| Ano: 2013 |
URL: http://archimer.ifremer.fr/doc/00187/29827/28277.pdf |
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| Degremont, Lionel; Boudry, Pierre; Bedier, Edouard; Ropert, Michel; Soletchnik, Patrick; Huvet, Arnaud; Moal, Jeanne; Samain, Jean-francois. |
| The French project "Morest", coordinated by IFREMER, aims to understand the causes of the summer mortalities in Crassostrea gigas. In 2001, three sets of families were bred following a nested half-sib mating design. 17 half-sib families (HSF) were obtained in this first generation (G1) and reared in 3 sites. Significant differences in survival were observed among HSF, and some HSF showed high levels of mortality in all sites, clearly indicating a genetic basis for survival. In 2002, a second generation (G2), including divergent selection and inbred lines, was constituted. Monitoring of survival and growth of G2s were the same as in 2001. Significant differences in survival were found between the offspring of the "high" and "low" selected groups and between... |
| Tipo: Text |
Palavras-chave: Summer; Oyster culture; Juveniles mortality; Genetics; Commercial species; Breeding. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/2003/acte-3346.pdf |
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| Francois, Cyrille; Garcia, Celine; Arzul, Isabelle; Chollet, Bruno; Ferrand, Sylvie; Joly, Jean-pierre; Miossec, Laurence; Robert, Maeva; Cuvelier, Nicolas; Le Gagneur, Eric; Ropert, Michel; Mouillard, Gilbert; Gerla, Daniel; Annezo, Jean-pierre; Le Gal, Dominique; Langlade, Aime; Bedier, Edouard; Nourry, Max; Martin, Jean-louis; Chabirand, Jean-michel; Fillon, Alain; Robert, Stephane; Courtois, Olivier; D'Amico, Florence; Rumebe, Myriam; Pichot, Yves; Le Gall, Patrik; Bouchoucha, Marc; Baldi, Yoann; Ravel, Christophe. |
| Créé en 1992, le réseau REPAMO (REseau de PAthologie des MOllusques) est un réseau de surveillance de la santé des mollusques marins du littoral français. Son activité s'inscrit dans le cadre de deux Directives Européennes, les Directives 91 /67/CEE et 95/70/CE. Les objectifs du réseau sont de prévenir l'introduction et la propagation d'organismes pathogènes, en particulier ceux à déclaration obligatoire et de surveiller l'évolution de ceux déjà présents sur le territoire national. Ces activités font parties des missions institutionnelles de l'IFREMER. La surveillance assurée par le réseau vise en premier lieu les infections à déclaration obligatoire présentes en France, la bonamiose à Bonamia ostreae et la Marteiliose à Marteilia refringens chez l'huître... |
| Tipo: Text |
Palavras-chave: Réseau; Surveillance; Mollusques; Coquillages; Santé. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/00086/19708/17349.pdf |
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| Delaporte, Maryse; Moal, Jeanne; Soudant, Philippe; Lambert, Christophe; Pouvreau, Stephane; Enriquez, Martha; Degremont, Lionel; Soletchnik, Patrick; Gagnaire, Beatrice; Ropert, Michel. |
| In the frame of MOREST project, a common biological material, resulting of a mixture of different families produced in experimental hatchery, was reared in two different environmental fields : Normandy and Charente. Concomitantly, a pool was conditioned at the Ifremer Argenton hatchery with three different algae levels : 4%, 8% and 12% of algal dry weight per oyster dry weight. During the experiments, five immune parameters were studied in parallel with survival rate and reproductive status (stages and intensity). Site location, seasonal variations and experimental diet level clearly influenced oyster immune parameters. Haemocyte counts were higher for oysters reared in Normandy than those reared in Charente and in hatchery. Granulocyte percentage was... |
| Tipo: Text |
Palavras-chave: Defense mechanisms; Nutrition; Seasonal variations; Physiology; Crassostrea gigas; Pacific oysters. |
| Ano: 2003 |
URL: http://archimer.ifremer.fr/doc/2003/acte-3500.pdf |
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| Royer, J; Ropert, Michel; Costil, K. |
| Summer mortalities have been observed in French shellfish areas (including Normandy) since 1994, but origin of this syndrome remains unclear and is suspected to be caused by a combination of several interacting extrinsic (biotic and abiotic) and intrinsic (genetic, physiological, immunological) factors. The French research program, MOREST aimed to identify the origin of oyster summer mortality along the French coast, focusing on the interactions between oysters, their pathogens, and the environment. The present study analyzed spatio-temporal variation in growth, condition and mortality in spat, and half-grown and market-sized oysters reared from February 2000 to October 2003 at six stations within two different areas in the Bay of Veys, Normandy: Grandcamp... |
| Tipo: Text |
Palavras-chave: France English Channel; Growth; Summer mortality; Crassostrea gigas; Oyster. |
| Ano: 2007 |
URL: http://archimer.ifremer.fr/doc/2007/publication-4733.pdf |
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| Huvet, Arnaud; Degremont, Lionel; Labreuche, Yannick; Daniel, Jean-yves; Dubrunfaut, Thomas; Boudry, Pierre; Haure, Joel; Bedier, Edouard; Ropert, Michel; Herpin, Amaury; Cunningham, Charles; Moal, Jeanne; Samain, Jean-francois. |
| Summer mortality associated with juveniles of the oyster Crassostrea gigas is the result of a complex interaction between the host, pathogens and environment. Divergent selection based on summer survival have been applied to produce families with resistant and susceptible progeny. Here, we describe the use of suppression subtractive hybridization to generate 150 clones that were differentially regulated between resistant and susceptible F2 progeny. The nucleotide sequence of these 150 clones was determined. Among the 25 unique sequences that matched with the products of known genes, those putatively implicated in energy generation (12%) and immune function (16%), systems suspected to be implicated in summer mortality, were extended and analyzed by real... |
| Tipo: Text |
Palavras-chave: Selection; Gene; Genetic; Summer mortality; Crassostrea gigas; Pacific oysters. |
| Ano: 2005 |
URL: http://archimer.ifremer.fr/doc/2005/acte-3447.pdf |
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| Registros recuperados: 74 | |
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