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Caractérisation de la virulence d'une souche de Vibrio aestuarianus, pathogène de l'huître Crassostrea gigas ArchiMer
Labreuche, Yannick.
In France. shellfish production is a traditional. well-established industry. mainly based upon commercial farming of the Pacifie oyster. Crassostrea gigas. Since the 1980's, annual mass mortalities of C. gigas have been reported during summer. Several studies on this subject have demonstrated that these mortality outbreaks resulted from complex interactions between the physiologieal andJor genetic status of the oysters. environmental factors, and one or more infectious agents, among which are bacteria of the genus Vibrio.
Tipo: Text Palavras-chave: Huître; Crassostrea gigas; Bactéries; Vibrio aestuarlanus; Pathogénicité; Produits extracellulaires; Métalloprotéase; Hémocytes; Interactions hôte/pathogène; Oyster; Crassostrea gigas; Bacteria; Vibrio aestuarianus; Pathogenicity; Extracellular products; Metalloprotease; Hemocytes; Host/pathogen interactions.
Ano: 2006 URL: http://archimer.ifremer.fr/doc/00034/14561/11859.pdf
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Epidémiologie et facteurs de virulence des bactéries du genre Vibrio responsables de mortalité de crevettes d'élevage en Nouvelle-Calédonie. Pespectives de lutte ArchiMer
Goarant, Cyrille.
La Nouvelle-Calédonie présente de nombreux atouts pour la pénéiculture. Le ralentissement brutal de son développement en 1993 s'explique par l'émergence d'une pathologie saisonnière qui affecte les crevettes juvéniles en grossissement, mettant en cause des bactéries du genre Vibrio et qui a reçu le nom de Syndrome 93. Vibrio penaeicida et V. nigripulchritudo sont deux espèces au pouvoir pathogène particulièrement élevé qui affectent les élevages. Une étude de typage moléculaire a permis de préciser leur épidémiologie et de proposer quelques conseils d'ordre zoosanitaire. Un suivi épidémiologique par amplification génique est en cours pour V. penaeicida, qui montre l'importance des facteurs écologiques dans l'apparition des épisodes pathologiques. La...
Tipo: Text Palavras-chave: Litopenaeus stylirostris; Vibrio penaeicida; Epidémiologie; Pathogénicité; Nouvelle-Calédonie.
Ano: 2000 URL: http://archimer.ifremer.fr/doc/00444/55510/57060.pdf
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Vibrio tubiashii en France: description d'isolats pathogènes affectant des mollusques et étude de leurs mécanismes de virulence ArchiMer
Mersni Achour, Rachida.
The oyster farming constitutes one of the major components of the global aquaculture. However, this sector is facing abnormal mortalities outbreaks that affect diploid and triploid oyster at their different life stages, in the hatcheries and in the field. During bivalve molluscs mortality events in France, bacteria initially classified into Harveyi group, were regularly isolated along with herpes virus, V. splendidus or V. aestuarianus. In order to fine tune the taxonomic affiliation of those isolates, a genotypic and phenotypic approach was used. The bacterial isolates, initially misclassified into the Harveyi clade, were shown to be genetically closed to V. tubiashii strains already recognized as the main causative agents of larvae and juvenile mollusc...
Tipo: Text Palavras-chave: Crassostrea gigas; Isolats français; Vibrio tubiashii; Hémocytes; Pathogénicité; Infection expérimentale; Produits extracellulaires; Facteurs de virulence; Metalloprotéases; Crassostrea gigas; French isolates; Vibrio tubiashii; Hemocytes; Pathogenicity; Experimental infection; Extracellular products.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00230/34093/32540.pdf
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