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| Registros recuperados: 32 | |
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| Cochennec, Nathalie; Le Roux, Frédérique; Berthe, Franck; Thebault, Anne. |
| Bonamiose, a disease caused by the protozoa Bonamia ostreae, has destroyed the flat oyster Ostrea edulis production, in France but also in Europe and in the United States since 1979. Another species of Bonamia has been monitored in New-Zealand, in Australia and lately in Chile. In Canada and Australia, two other parasites have been described in cupped oyster: Mikrocytos mackini and Mikrocytos roughleyi. All these small size protozoa are grouped under the name "Mikrocell". For most of them, light and electronic microscope descriptions have been realised. Based on those criteria, different taxonomic positions have been proposed. However, these analysis are still questioned today. |
| Tipo: Text |
Palavras-chave: Bivalves; Haplosporidia; Parasites; Pathologie. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/2001/acte-3270.pdf |
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| Garcia, Celine; Thebault, Anne; Degremont, Lionel; Arzul, Isabelle; Miossec, Laurence; Robert, Maeva; Chollet, Bruno; Francois, Cyrille; Joly, Jean-pierre; Ferrand, Sylvie; Kerdudou, Nolwenn; Renault, Tristan. |
| Since its molecular characterisation, Ostreid herpesvirus 1 (OsHV-1) has been regularly detected in Crassostrea gigas in France. Although its pathogenicity was demonstrated on larval stages, its involvement during mortality outbreaks at the juvenile stage was highly suspected but not evidenced. To investigate mortality outbreaks, the French National Network for Surveillance and Monitoring of Mollusc Health (REPAMO) carried out two surveys in juvenile C. gigas. The first survey lasted from 1998 to 2006 and was an epidemiological inquiry occurring when oyster farmers reported mortality outbreaks. The second survey, a longitudinal one, was set up in 1998 to complete the network observations on OsHV-1. Data analysis showed a specific pattern of mortality... |
| Tipo: Text |
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| Ano: 2011 |
URL: http://archimer.ifremer.fr/doc/00040/15110/12572.pdf |
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| Thebault, Anne; Chollet, Bruno; Robert, Maeva. |
| La cellule de veille zoosanitaire de La Tremblade s'occupe de trois zones situées au sud de la Loire: la Baie de Bourgneuf, la région de Marennes-Oléron-Charentes, et le bassin d'Arcachon. Ces régions produisent principalement des huîtres creuses. Le naissain d'huîtres creuses produit à Arcachon et en Charente représente près de 80% de la production d'huître creuse, qui sera élevée dans toutes les régions ostréicoles françaises. Un effort particulier avec des prélèvements systématiques a donc été mis en place sur Crassostrea gigas dans ces trois trois zones, notamment sur les larves et le naissain d'Arcachon et de Charente. Compte tenu des transferts fréquents, des animaux sauvages sont prélevés pour caractériser les sites, tandis que la production en... |
| Tipo: Text |
Palavras-chave: Réseau surveillance; REPAMO; Analyses zoosanitaires; Huître creuse; Crassostrea gigas; Mortalités. |
| Ano: 2000 |
URL: http://archimer.ifremer.fr/doc/00134/24488/22513.pdf |
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| Pepin, Jean-francois; Solliec, Gaelle; Vigneron, Vassilia; Thebault, Anne; Lamothe, Julien; Renault, Tristan. |
| The presence of a herpes-type virus has been demonstrated in various species of marine shellfish (bivalves and gastropoda) throughout different regions of the world (Europe, North and South America, Asia, Australia), and is frequently associated with high mortality levels. Nevertheless, apart from the sanitary monitoring in mollusc farming, very little data is available about the detection of this type of virus in the natural populations of bivalves and about the persistence of such viruses in sea water. Various diagnostic tools have been developed in order to detect the oyster herpes virus (Ostreid herpesvirus, OsHV). The presence of this virus has been looked for by PCR in marine water samples coming from fattening ponds, in order to precise the natural... |
| Tipo: Text |
Palavras-chave: Levures; Eau de mer; Diagnostic; Huîtres; Mollusques; OsHV; Herpèsvirus. |
| Ano: 2008 |
URL: http://archimer.ifremer.fr/doc/2008/acte-3716.pdf |
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| Collet, Bertrand; Boudry, Pierre; Thebault, Anne; Heurtebise, Serge; Morand, Berenice; Gerard, Andre. |
| Twenty male and 20 female parental oysters, originating from four sites located along the French Atlantic coast, were crossed together. The 400 crosses were performed separately and then pooled to give a batch of larvae with a large genetic base. Successive sieving after 17 days at 23°C enabled the separation of the largest larvae from the batch. These larvae (i.e., sieving groups) were left to metamorphose and fix onto flat PVC collectors changed daily. Four groups of larvae representing distinctly different growth rates were successively separated during the attachment and metamorphosis of the whole population. This lasted 12 days, from the 17th day to the 29th after fertilisation. A part of each sieving group was settled separately as replicates on... |
| Tipo: Text |
Palavras-chave: Settlement; Metamorphosis; Crassostrea gigas; Growth. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/1999/publication-468.pdf |
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| Thebault, Anne. |
| Ce document compile l’ensemble des bulletins de la surveillance de la santé des mollusques marins émis au cours de l’année 2001 par le réseau REPAMO. Ces bulletins, édités à fréquence mensuelle ou en fonction du nombre d’événements, relatent les événements de mortalité notifiés au réseau ainsi que les résultats des analyses effectuées lors des prélèvements d’animaux réalisés sur les lieux des mortalités. Les bulletins sont diffusés aux instances professionnelles concernées (CRC, CNC, CDPMEM, CNPMEM, centres techniques), à la DGAL, à la DPMA, aux laboratoires d’analyses, à Ifremer ainsi que sur le site internet du REPAMO. Ils ont pour objectif de tenir les destinataires informés des épisodes de mortalités anormales de mollusques marins rencontrés sur le... |
| Tipo: Text |
Palavras-chave: REPAMO; Surveillance zoosanitaire; Mollusques marins; Mortalités. |
| Ano: 2018 |
URL: https://archimer.ifremer.fr/doc/00480/59163/61941.pdf |
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| 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 |
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| Thebault, Anne; Arnich, Nathalie; Belin, Catherine; Neaud-masson, Nadine. |
| In France, the sampling strategy for the official monitoring of lipophilic phycotoxins in bivalve shellfish relies on the definition of risk areas and high risk periods, during which a systematic weekly analysis of toxins in shellfish is performed. Since 2010, high risk periods are defined as follows: the occurrence of one result above the European regulatory limit (160 μg equivalent okadaic acid/kg shellfish) over the last 3 years leads to that month being considered a high risk period. This definition was established according to a statistical analysis of the official monitoring results for the period 2003-2008, based on the mouse bioassay (MBA) as the official analytical method. As of the 1st January 2010, the MBA has been replaced by LC-MS/MS. In 2014,... |
| Tipo: Text |
Palavras-chave: Monitoring; Shellfish; Lipophilic phycotoxins; Bayesian inference. |
| Ano: 2014 |
URL: http://archimer.ifremer.fr/doc/00393/50470/51205.pdf |
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| Fleury, Pierre-gildas; Langlade, Aime; Le Coguic, Marie-jo; Thebault, Anne; Chellet, B.; Ponthoreau, C.; Devulder, G.. |
| Suite aux mortalités massives de coques apparues au Croisic en août 1997, des études ont été mises en place en 1998, avec une coordination des travaux des différents laboratoires impliqués: suivi de la température et de la matière organique dans le sédiment, suivi des animaux et observation des parasites. Les principaux résultats sont: - l'enregistrement de brusques amplitudes thermiques dans le sédiment; - des taux anormalement élevés de matière organique dans le sédiment (20 à 40%) à l'automne 1997, puis des taux plus habituels (<2%) après les tempêtes de l'hiver 1997-98 ; - un affaiblissement important de la vitalité musculaire des animaux en juillet; - une infestation relativement faible en trématodes virulents (Labratrema minimus), mais dont les... |
| Tipo: Text |
Palavras-chave: Coques; Cerastoderma edule; Le Croisic; Sédiment; Elevage; Mortalité; Croissance; Vitalité; Maturation; Pathologie; Cockles; Cerastoderma edule; Le Croisic (France); Sediment; Rearing; Mortallty; Growlh; Vitality; Maturation; Pathology. |
| Ano: 1999 |
URL: http://archimer.ifremer.fr/doc/00107/21848/19435.pdf |
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| 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 |
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| Registros recuperados: 32 | |
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