Consulta: creatorFacets:"Le Coguic, Yvette"
Registros recuperados: 14
Data/hora: 04/06/2024 03:47:16

Bilan 1998 du réseau REPAMO - Réseau National de Surveillance zoosanitaire des mollusques marins
Provedor de dados: 5
Autores: Thebault, Anne; Martin, Anne-genevieve; Le Coguic, Yvette; Hirata, Toshio; Tige, Gilbert; Pichot, Yves; Chollet, Bruno; Cochennec, Nathalie; Renault, Tristan.
Le réseau REPAMO répond à plusieurs objectifs, définis dans différentes Directives Européennes: prévenir et détecter l'introduction et la propagation d'un agent pathogène émergent, réémergent ou exotique pour les productions de coquillages d'intérêt commercial en France, surveiller l'évolution des maladies à déclaration obligatoire, surveiller les échanges avec nos partenaires commerciaux. Le fonctionnement repose sur la collaboration entre les professionnels, la DPMCM, les laboratoires côtiers d'IFREMER, et trois cellules d'analyses. Les prélèvements et les outils diagnostiques choisis dépendent des différents objectifs. Le suivi est fait sur des populations sauvages et cultivées du littoral français. Le nombre d'analyses progresse régulièrement grâce à...
Tipo: Text
Palavras-chave: Réseau surveillance; Pathologie; Mortalités; Mollusques marins.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00098/20904/18523.pdf

Réseau d'évaluation de la croissance de l'huître creuse sur les côtes françaises (REMORA). Résultats des stations de BRETAGNE (Année 2000)
Provedor de dados: 5
Autores: Fleury, Pierre-gildas; Claude, Serge; Bouget, Jean-francois; Langlade, Aime; Le Coguic, Yvette.
Every year, from March to December, the IFREMER / REMORA network carries out a survey of mortality, growth and quality criteria of two oyster batches ("juveniles" = one-year ciass ; and "adults" = two-years class), distributed among various stations of the main French oyster areas. In Brittany, this network includes 11 points, to which regional points can be added (15 in 2000). With regard to the Breton stations of the network, the year 2000 showed rather low mortality rates, excepted mortality of several oysters when transfered to the sea. Several areas however had higher mortality rates (&gt; 20%) : l'Arguenon, Morlaix, les Abers, Pen-Bé and Le Croisic. 2000 is a year of good growth in South Brittany (72.8 g in December), more average in North Brittany...
Tipo: Text
Palavras-chave: REMORA; Bretagne; Huître creuse; Mortalité; Croissance; Qualité commerciale; Polydora; REMORA; Brittany; Gigas (cupped) oyster; Mortality; Growlh; Commercial qualily; Polydora.
Ano: 2001
URL: http://archimer.ifremer.fr/doc/00113/22389/20084.pdf

Réseau de Pathologie des Mollusques - Secteurs Nord-Loire - Année 1999. Bilan des travaux de la cellule zoosanitaire de La Trinité-sur-Mer
Provedor de dados: 5
Autores: Martin, Anne-genevieve; Tige, Gilbert; Hirata, Toshio; Le Coguic, Yvette; Chollet, Bruno; Robert, Maeva; Thebault, Anne.
Within the context of the mollusc pathology monitoring network, this report assesses the follow-up and work done by the zoosanitary unit of Trinité-sur-Mer on the whole of the French farming and bed areas of the North Loire for the year 1999.
Tipo: Text
Palavras-chave: Herpes virus; Pathology; Mortality; Britanny (France); Normandy; Clam; Abalone; Cockle; Mussel; Pacific cupped oyster; European flat oyster; Herpès virus; Pathologie; Mortalité; Bretagne; Normandie; Naissain; Palourde; Ormeau; Coque; Moule; Huître creuse; Huître plate.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/2000/rapport-1921.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

First record of the microsporidian parasite Steinhausia mytilovum in Mytilus sp (Bivalvia : Mytilidae) from France
Provedor de dados: 5
Autores: Comtet, Thierry; Garcia, Celine; Le Coguic, Yvette; Joly, Jean-pierre.
Steinhausia mytilovuln is a globally distributed microsporidian parasite which infects the oocytes of the blue mussels Mytilus edulis and M. galloprovincialis. Despite the intensive monitoring effort made on mussel populations, the parasite has not previously been reported in France. We report herein on the occurrence of S. mytilovum in Mytilus sp. from 1 cultured and 2 natural populations on the northern coast of France, thus extending the parasite's known distribution northwards. We also report on the observation in 1989 of S. mytilovum in M, galloprovincialis from the Golfe de Fos area in the Mediterranean Sea (South of France), S. mytilovum was observed in the European hybrid zone between M. edulis and M. galloprovincialis, which therefore renders the...
Tipo: Text
Palavras-chave: Aquaculture; Parasite; Microsporicha; Steinhausia mytilovum; Mytilus galloprovincialis; Mytilus edulis.
Ano: 2004
URL: http://archimer.ifremer.fr/doc/2004/publication-2862.pdf

Genetic and reproduction strategy in Crassostrea gigas mortality
Provedor de dados: 5
Autores: Moal, Jeanne; Bedier, Edouard; Fleury, Pierre-gildas; Langlade, Aime; Le Coguic, Yvette; Degremont, Lionel; Boudry, Pierre; Le Coz, Jean-rene; Pouvreau, Stephane; Enriquez-diaz, M.; Lambert, Christophe; Quere, Christele; Soudant, Philippe; Samain, Jean-francois.
Bi-parental families were produced in hatchery and tested in the field in 2001. Two sets of 5 families were constituted, selected on their high (R) and low (S) survival. These two sets were reared in Brittany from March to November 2002. Samplings were performed twice a month to obtain data on biometry, survival, reproductive cycle, biochemical composition, adenylate energy charge, hemolymph parameters (ions and defense system) and muscle strength. "R" and "S" oysters exhibited different reproductive effort and spawning strategy. "R" oysters allocated less energy in gonad than "S" ones and presented a complete spawning at the end of August contrary to the "S" which spawns partially. Mortality started in July when the seawater temperature reached 19 degree...
Tipo: Text
Palavras-chave: Summer; Reproduction; Oyster culture; Mortality; Genetic diversity; Commercial species; Breeding.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/2003/acte-3345.pdf

Infection of the cockle Cerastoderma edule in the baie des veys (France) by the microsporidian parasite Steinhausia sp.
Provedor de dados: 5
Autores: Comtet, T; Garcia, Celine; Le Coguic, Yvette; Joly, Jean-pierre.
We report the occurrence of the microsporidian parasite Steinhausia sp. in the oocytes of the common cockle Cerastoderma edule in a natural population in France, where high mortalities occurred. Steinhausia sp. appeared primarily as sporocysts containing many small spores, and putative earlier developmental stages were also observed. Both its prevalence and infection intensity were low, and no host defence reaction was recognized, suggesting that Steinhausia sp. had no detrimental effect on C. edule. Its prevalence was higher in cockles lying on the sediment surface, but the significance of this observation could not be explained given the poor knowledge of the Steinhausia life cycle. The present data did not allow specific identification of the parasite,...
Tipo: Text
Palavras-chave: Cerastoderma edule; Steinhausia sp.; Microsporida; Oocyte; Baie des veys.
Ano: 2003
URL: http://archimer.ifremer.fr/doc/00000/10762/7586.pdf

Bilan des travaux de la cellule zoosanitaire de La Trinité Sur Mer. Réseau de Pathologie des Mollusques.  Secteurs Nord-Loire. Année 1998
Provedor de dados: 5
Autores: Martin, Anne-genevieve; Tige, Gilbert; Hirata, Toshio; Kuntz, Gregoire; Le Coguic, Yvette.
Within the context of the mollusc pathology monitoring network, this report assesses the follow-up and work done by the zoosanitary unit of Trinité-sur-Mer on the whole of the French farming and bed areas of the North Loire for the year 1998.
Tipo: Text
Palavras-chave: Herpes virus; Pathology; Mortality; Britanny (France); Normandy; Clam; Abalone; Cockle; Mussel; Pacific cupped oyster; European flat oyster; Herpès virus; Pathologie; Mortalité; Bretagne; Normandie; Naissain; Palourde; Ormeau; Coque; Moule; Huître creuse; Huître plate.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/1999/rapport-1920.pdf

Bilan 1999 du Réseau REPAMO - Réseau National de Surveillance zoosanitaire des Mollusques marins
Provedor de dados: 5
Autores: Thebault, Anne; Martin, Anne-genevieve; Le Coguic, Yvette; Hirata, Toshio; Tige, Gilbert; Pichot, Yves; Grizel, Henri; Berthe, Franck; Cochennec, Nathalie; Renault, Tristan; Le Roux, Frederique.
Le réseau REPAMO (Réseau de Pathologie des Mollusques) est un réseau de santé animale, qui s'occupe des coquillages marins du littoral français métropolitain. Les mollusques marins des côtes françaises représentent une ressource par la pêche, mais sont surtout une part importante de l'aquaculture. Les pertes liées aux maladies dans ce domaine d'activité sont aujourd'hui considérées comme l'un des principaux facteurs limitants de son développement au niveau mondial. Deux exemples récents suffisent à illustrer ce danger pour l'ostréiculture française : • La culture de l''huître plate Ostrea edulis, déjà atteinte par un parasite, Marteilia refringens, est passée en quelques années de 20 000 tonnes à 1800 tonnes, suite à une épizootie. En effet à la fin des...
Tipo: Text
Palavras-chave: Réseau surveillance; Pathologie; Mollusques bivalves; Mortalité.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/00098/20903/18522.pdf

Réseau d'évaluation de la croissance de l'huître creuse sur les côtes françaises (REMORA) ; résultats des stations de BRETAGNE (Année 1999)
Provedor de dados: 5
Autores: Fleury, Pierre-gildas; Claude, Serge; Bouget, Jean-francois; Langlade, Aime; Le Coguic, Yvette.
The network IFREMER/ REMORA watches every year, from February to December, mortality, growth and quality criteria of two oyster batches ("juveniles" = one-year class ; and "adults" = two-years class), distributed among various stations of the main French oyster areas. This network is a tool for trend estimations (geographic and chronological, on the national scale). With regard to the Breton stations of the network, the year 1999 showed a small increase of mortality rates, both in adults alter their transfer on the REMORA stations and in juveniles during the Summer season. this was particularly observed in Morlaix, Aber Benoît and Pen-Bé. Although it was better than 1998, the year 1999 was a poor year for growth, especially in North Brittany (62.5 g in...
Tipo: Text
Palavras-chave: REMORA; Bretagne; Huître creuse; Mortalité; Croissance; Qualité commerciale; Polydora; REMORA; Brittany; Gigas oyster; Mortality; Growth; Commercial quality; Polydora.
Ano: 2000
URL: http://archimer.ifremer.fr/doc/00113/22388/20083.pdf

Réseau de suivi de la croissance de l'huître creuse sur les côtes françaises (REMORA) , résultats des stations de BRETAGNE (Année 1998)
Provedor de dados: 5
Autores: Fleury, Pierre-gildas; Claude, Serge; Langlade, Aime; Le Coguic, Yvette.
The network IFREMER/ REMORA watches every year, from February to December, mortality, growth and quality criteria of two oyster batches ("juveniles" = one-year class ; and "adults" = two-years class), distributed among various stations of the main French oyster areas. This network is a tool for trend estimations (geographic and chronological, on the national scale) ; it must not be regarded as an accurate estimation of professional oyster ongrowings. With regard to REMORA results, generally tallied with professional observations, 1998 on the whole was a second year of low mortality. But some areas remained affected by significant mortalities such as Pen-Bé in South Brittany. The year 1998 was overall a very poor year for growth : the mean oyster weight in...
Tipo: Text
Palavras-chave: REMORA; Bretagne; Huître creuse; Mortalité; Croissance; Qualité commerciale; Polydora; REMORA; Brittany; Gigas oyster; Mortality; Growth; Commercial quality; Polydora.
Ano: 1999
URL: http://archimer.ifremer.fr/doc/00113/22387/20082.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

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