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Essai d'acclimatation de Crassostrea virginica et performances biologiques comparées avec Crassostrea gigas (2ème partie) ArchiMer
Gerard, Andre; Naciri, Yamama; Peignon, Jean-marie; Ledu, Christophe; Phelipot, Pascal; Baud, Jean-pierre; Heurtebise, Serge; Nourry, Max; Renault, Tristan; Cochennec, Nathalie; Zanette, Yvan; Blachier, Philippe.
Deuxième volet du programme d'essai d'acclimatation de l'huître américaine Crassostrea virginica, ce rapport présente les actions et les résultats de l'année 1993 qui a été consacrée au suivi des performances comparées de croissance des populations de C. gigas et C. virginica produites en 1992, ceci en trois sites différents: • dans le bassin de Marennes-Oléron en claire et sur estran, à la station IFREMER de Bouin en élevage intensif, au CREAA sur l'Ile d'Oléron en marais extensif. Au terme de cette seconde année d'étude, il est d'ores et déjà possible d'affirmer que que la souche anglaise de C. virginica étudiée ne présente pas de caractéristiques de croissance susceptibles de la rendre compétitive par rapport au témoin Crassostrea gigas et cela d'autant...
Tipo: Text Palavras-chave: Mollusques; Acclimatation; Crassostrea virginica; Crassostrea gigas; Génétique; Pathologie.
Ano: 1994 URL: http://archimer.ifremer.fr/doc/00077/18846/16419.pdf
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Obtention de souches conchylicoles performantes par polyploïdisation (4ème partie) ArchiMer
Gerard, Andre; Naciri, Yamama; Peignon, Jean-marie; Ledu, Christophe; Phelipot, Pascal; Bodoy, Alain; Heurtebise, Serge; Garnier, Jacqueline; Baud, Jean-pierre; Nourry, Max; Haure, Joel; Martin, Anne-genevieve; Claude, Serge; Barret, Jean; Devauchelle, Nicole; Joly, Jean-pierre; Goulletquer, Philippe; Coatanea, Denis; Oheix, Jocelyne; Zanette, Yvan; Blachier, Philippe.
This fourth part of the polyploidisation program reports the experiments that were conducted in 1992 and that were devoted to : - the acquiring of a new method using an epifluroescent microscope - the development o a new technique for inducing polyploidy - the triploidy induction for the Europena clam Ruditapes decussatus - the settlement of performance controls conducted on diploid and triploid populations of Ostrea edulis - results of performance controls conducted on diploid and triploid populations of Crassostrea gigas and Ruditapes philippinarum
Tipo: Text Palavras-chave: Ruditapes decussatus; Ruditapes philippinarum; Ostrea edulis; Crassostra gigas; Cytongenetics; Polyploidy; Ruditapes decussatus; Ruditapes philippinarum; Ostrea edulis; Crassostrea gigas; Cytogénétique; Polyploïdie.
Ano: 1993 URL: http://archimer.ifremer.fr/doc/1993/rapport-3859.PDF
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Ostreid Herpesvirus 1 Infection among Pacific Oyster (Crassostrea gigas) Spat: Relevance of Water Temperature to Virus Replication and Circulation Prior to the Onset of Mortality ArchiMer
Renault, Tristan; Bouquet, Anne Lise; Maurice, Julien-thomas; Lupo, Coralie; Blachier, Philippe.
number of bivalve species worldwide, including the Pacific oyster, Crassostrea gigas, have been affected by mass mortality events associated with herpesviruses, resulting in significant losses. A particular herpesvirus was purified from naturally infected larval Pacific oysters, and its genome was completely sequenced. This virus has been classified as Ostreid herpesvirus 1 (OsHV-1) within the family Malacoherpesviridae. Since 2008, mass mortality outbreaks among C. gigas in Europe have been related to the detection of a variant of OsHV-1 called µVar. Additional data are necessary to better describe mortality events in relation to environmental-parameter fluctuations and OsHV-1 detection. For this purpose, a single batch of Pacific oyster spat was deployed...
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Ano: 2014 URL: http://archimer.ifremer.fr/doc/00207/31871/30320.pdf
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Pipetman et bottes en caoutchouc à la recherche d'hôte(s) de Marteilia refringens ArchiMer
Audemard, Corinne; Le Roux, Frédérique; Sauriau, Pierre-guy; Sautour, Benoît; Combes, C.; Coustau, C.; Blachier, Philippe; Berthe, Franck.
Over the last thirty years, the French production of flat oyster Ostrea edulis dropped from15,000 tons/year to 1,500 tons. Marteilia refringens, a parasite of the flat oyster's digestive gland, is partly responsible for this drop. The fight against this pathogen agent requires a better knowledge of its parasitic cycle. The main hypothesis is the existence of a heteroxenous cycle, that is to say a cycle involving more than one host. However, for thirty years this or these hosts have not been found, and the cycle of Marteilia refringens remains unknown.
Tipo: Text Palavras-chave: Claires ostréicoles; Parasite; Détection; Biologie moléculaire; Marteilia refringens.
Ano: 2001 URL: http://archimer.ifremer.fr/doc/2001/acte-3272.pdf
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