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Registros recuperados: 46
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First results of an epidemiological study on oyster (Crassostrea gigas) mortality events in France during summer 2008 ArchiMer
Miossec, Laurence; Allain, Gwenhael; Arzul, Isabelle; Francois, Cyrille; Garcia, Celine; Cameron, Angus.
Abnormal mortalities occurred in most oyster producing areas in France during the summer of 2008. The mortalities were sudden and severe (up to 100%) and mainly affected 6 to 18 month old juveniles. Only Crassostrea gigas species was affected. The cause of the mortality was unclear but OsHV-1 virus and bacteria belonging to Vibrionaceae family were frequently detected in affected populations. An epidemiological study was commenced in autumn 2008 in order to identify factors associated with, and the cause (or causes) of these mortalities. This paper presents the results of the first (descriptive) part of this investigation. The objectives were to identify the affected population and to describe the pattern of mortalities in time and space. Mortality...
Tipo: Text Palavras-chave: France; Crassostrea gigas; Oyster; Mortality; Epidemological study.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/acte-6772.pdf
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Infection of clams by Perkinsus olseni as an example of the new French Surveillance Programme ArchiMer
Miossec, Laurence; Garcia, Celine; Arzul, Isabelle; Francois, Cyrille; Joly, Jean-pierre; Chollet, Bruno; Robert, Maeva; De Blas, Isabelle.
The French network for the surveillance and monitoring of mollusc health (REPAMO) was officially set up in 1992 to control the shellfish status along the French coasts according to the European directives 91/67/EEC and 95/70/EC. The objectives are 1) the surveillance of notifiable diseases present in France (Bonamiosis and Marteiliosis of flat oysters Ostrea edulis), 2) the surveillance of health status of cultured and wild populations of molluscs, 3) the study of abnormal mortality and 4) the control of exchanges from European and third countries. In this context, a new surveillance programme, called Active Targeted Survey, part of the REPAMO, was applied in 2004 in order to improve the monitoring of the health status of the French mollusc populations...
Tipo: Text Palavras-chave: Surveillance; Bivalvia; Clams; Perkinsus olseni; Pathogen; Pathology.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/2006/acte-6376.pdf
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Can the protozoan parasite Bonamia ostreae infect larvae of flat oysters Ostrea edulis? ArchiMer
Arzul, Isabelle; Langlade, Aime; Chollet, Bruno; Robert, Maeva; Ferrand, Sylvie; Omnes, Emmanuelle; Lerond, Sophie; Couraleau, Yann; Joly, Jean-pierre; Francois, Cyrille; Garcia, Celine.
Bonamia ostreae is an intracellular protistan parasite affecting flat oysters Ostrea edulis. It can be detected in juveniles but mortalities mainly affect oysters which are more than 2 years old. The parasite is usually observed inside haemocytes and sometimes free, notably in gill epithelia suggesting a parasite release through this organ. However, the infective form and ways of entry and release remain undetermined. Flat oysters incubate their larvae in their pallial cavity for 8–10 days before releasing them into the water column. Flat oysters in Bay of Quiberon in South Brittany (France) are known to be infected with B. ostreae since 1979 and is the most important area in France for O. edulis spat collection. Flat oysters incubating larvae were sampled...
Tipo: Text Palavras-chave: Bonamia ostreae; Flat oyster; Ostrea edulis; Transmission; Larvae; Parasite life cycle.
Ano: 2011 URL: http://archimer.ifremer.fr/doc/00028/13898/12566.pdf
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Etude épidémiologique descriptive des mortalités exceptionnelles d'huîtres creuses enregistrées sur le littoral français en 2008 ArchiMer
Miossec, Laurence; Allain, Gwenhael; Arzul, Isabelle; Francois, Cyrille; Garcia, Celine; Cameron, Angus.
En 2008, des mortalités massives d'huîtres creuses (Crassostrea gigas) ont été recensées en France pendant l'été. Ce phénomène, observé de façon récurrente sur les côtés françaises depuis le milieu des années 70, a présenté un caractère exceptionnel en 2008 car il a été observé simultanément dans tous les bassins ostréicoles. De plus, les taux de mortalité calculés ont été particulièrement élevés (80 à 100 % pour de nombreux lots). La détection, fréquente et souvent simultanée, d'herpèsvirus OsHV1 et de plusieurs bactéries de la famille des Vibrionacées dans le cadre de la surveillance menée par le réseau national Repamo (réseau de pathologie des mollusques) a mis en évidence le caractère infectieux de l'épisode épidémique 2008. Une étude épidémiologique a...
Tipo: Text Palavras-chave: France; Crassostrea gigas; Huîtres; Mortalités; Epidémiologie.
Ano: 2009 URL: http://archimer.ifremer.fr/doc/2009/acte-6771.pdf
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Bilan 2016 du dispositif national de surveillance de la santé des mollusques marins ArchiMer
Lupo, Coralie; Fleury, Elodie; Normand, Julien; Osta Amigo, Axel; Robert, Stephane; Canier, Lydie; Francois, Cyrille; Garcia, Celine.
Depuis 1992, une surveillance de la santé des mollusques marins du littoral français est assurée par le réseau de Pathologie des Mollusques (Repamo). Ses activités s’inscrivent dans le cadre de la Directive Européenne 2006/88/CE. Depuis son évaluation par la plateforme nationale d’épidémiosurveillance en santé animale en 2012, l’objectif de surveillance est la détection précoce des infections dues à des organismes pathogènes exotiques et émergents affectant les mollusques marins sauvages et d’élevage. L’année 2016 est la deuxième année de transition pour laquelle une évolution des modalités de surveillance de la santé des mollusques marins animées par l’Ifremer a été amorcée. Un dispositif hybride de surveillance a été mis en place en 2015, s’appuyant sur...
Tipo: Text Palavras-chave: Réseau; Surveillance; Pathologie; Mollusques; Coquillages; Santé; Mortalité; Maladie.
Ano: 2017 URL: http://archimer.ifremer.fr/doc/00386/49781/50327.pdf
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A long term study of bonamiosis in Quiberon bay, France ArchiMer
Arzul, Isabelle; Miossec, Laurence; Blanchet, Estelle; Garcia, Celine; Joly, Jean-pierre; Francois, Cyrille; Berthe, Franck.
Bonamiosis was first reported in association with mass mortality of flat oysters, Ostrea edulis, in June 1979 in L'Ile Tudy, Brittany. The disease rapidly spread to all of the oyster farming areas in France but also in other European countries. The French flat oyster production, which already suffered from another protozoan disease, marteiliosis, decreased from 5500 mt in 1979 to less than 2000 mt after 1980. In 2001, about 350 French farms sell 1650 mt of flat oysters. This production mainly relies on natural spat collection which specially occurs in Quiberon bay. One third of this spat is transferred from South to North Brittany for further growth. Quiberon bay constitutes an interesting site regarding the surveillance of bonamiosis because of the...
Tipo: Text Palavras-chave: Detection; Bonamia ostreae; Protozoan; Diseases; Pathology; Ostrea edulis; Oysters.
Ano: 2005 URL: http://archimer.ifremer.fr/doc/2005/acte-3314.pdf
Registros recuperados: 46
Primeira ... 123 ... Última
 

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