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Persistence of infectious pancreatic necrosis virus (IPNV) in scallops Pecten maximus ArchiMer
Mortensen, Stein Hàkon; Bachere, Evelyne; Le Gall, Ghislaine; Mialhe, Eric.
Infectious pancreatic necrosis virus (IPNV), serotype N1 isolated from scallops Pecten maxjmus in Norway, was propagated and used in both inoculation and bath challenge experiments with scallops in vivo. Although virus titers measured in scallop tissues decreased, depuration of virus was not complete during the experimental periods. TPNV was still detectable 11 mo after injection. The highest virus titer was found in the hepatopancreas, but virus was also detectable in other tissues, as well as in the hemolymph. After a bath challenge, uptake of IPNV was shown. Virus was present in hepatopancreas, gonad, kidney, mantle, gill, rectum and in the hemolymph 1 d after the uptake. The titer was highest in the hepatopancreas where virus was detectable at the end...
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Ano: 1992 URL: http://archimer.ifremer.fr/doc/1992/publication-2767.pdf
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Contribution à l'étude d'une Rickettsiose de la coquille Saint-Jacques Pecten maximus (Mollusca : Bivalvia) ArchiMer
Le Gall, Ghislaine.
A la suite de mortalités dans la population de coquilles St- Jacques, Pecten marimus, de la baie de St-Brieuc, un procaryote intracellulaire a été mis en évidence dans les branchies et apparenté à l'ordre des Ricketts iales sur la base de critères ultrastructuraux. Un protocole de purification, reposant sur des centrifugations différentielles et isopycniques, a été élaboré. Les protéines constitutives majeures et plusieurs activités enzymatiques ont été caractérisées. Des anticorps polyclonaux et monoclonaux ont été préparés et appliqués à des immunodiagnos tics de la rickettsie. Des fragments de restriction de l'ADN du procaryote ont été clonés et analysés en tant que sondes . Plusieurs fragments ont été séquencés et des oligonucléotides spécifiques ont...
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Ano: 1991 URL: http://archimer.ifremer.fr/doc/00285/39618/38115.pdf
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