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Déterminisme du recrutement : données préliminaires sur le développement et la survie larvaire de Crassostrea gigas ArchiMer
His, Edouard.
Hormis les facteurs anthropiques (voir références bibliographiques HIS et al .), l es facteurs nutritionnels jouent un rôle prépondérant dans le déroulement de la vie pélagique des larves de bivalves ; un déficit nutritionnel peut, à lui seul, hypothéquer les chances de captage (PERSOONE et al, 1980; HIS et ROBERT, 1985). Or les données dont nous disposons ont été presque exclusivement obtenues en milieu expérimental (voir synthèse de LUCAS, 1982); il n 'est pas certain qu'elles puissent être extrapolées au milieu naturel. Site exceptionnel en ce qui concerne la reproduction des huîtres, le bassin d'Arcachon permet l'isolement de véligères du milieu naturel, aux différents stades de la vie pélagique; émissions massives, faible charge en tripton favorisent...
Tipo: Text Palavras-chave: Reproduction; Larves; Véligères; Huîtres creuses; Crassostrea ggias.
Ano: 1986 URL: http://archimer.ifremer.fr/doc/00050/16157/13640.pdf
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Etude des interactions hôte/virus chez l’huître creuse Crassostrea gigas et son virus Ostreid herpesvirus 1 ArchiMer
Segarra, Amelie.
Ostreid herpesvirus type 1 (OsHV-1) can be considered one of the major infectious agents in Pacific oysters, Crassostrea gigas, in France and all around the world. Differences in terms of mortality among infected animals were reported suggesting a genetic basis of the susceptibility to the OsHV-1 infection. In this context, the main objective of this thesis was to understand the interactions between Pacific oysters and OsHV-1, in particular, the molecular basis of the viral cycle. Results showed that the virus is able to replicate in the host regardless of its stage of development or its susceptibility. However, multiplication kinetics is faster in the most susceptible individuals compared to less susceptible ones. After an active replication phase, it...
Tipo: Text Palavras-chave: Bivalves; Huître creuse; Crassostrea gigas; Mortalités; OsHV-1; Gènes viruax; Interaction hôte-virus; Transcriptome; Sensibilité; PCR en temps réel; Bivalve; Pacific oyster; Crassostrea ggias; Mortality; OsHV-1; Viral gene; Interaction host-virus; Transcriptome; Susceptibility; Real-time PCR.
Ano: 2014 URL: http://archimer.ifremer.fr/doc/00252/36297/34826.pdf
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