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| Le Roux, Frédérique; Audemard, Corinne; Cochennec, Nathalie; Thebault, Anne; Berthe, Franck. |
| Responsible for massive epizootics, the Marteilia type parasites are very dangerous infectious agents for oysters. As a matter of fact, in France the spreading out of the parasitosis caused by Marteilia refringens disturbed dangerously the flat oyster, Ostrea edulis, production; destroying a large percentage of the farms on the Atlantic coast. The fight against marteiliose implies a good management of the contamination risk, that is to say the identification of the parasite(s), the characterization of the host(s), vector(s) or reservoir(s) and the understanding of the parasite's transmission mode. |
| Tipo: Text |
Palavras-chave: Bivalves; Biologie Moléculaire; Marteilia refringens; Epidémiologie. |
| Ano: 2001 |
URL: http://archimer.ifremer.fr/doc/2001/acte-3271.pdf |
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| Audemard, Corinne. |
| L'huître plate, Ostrea edulis a subit depuis les années 1970 deux graves épizooties provoquées par les parasites protozoaires, Bonamia ostreae et Marteilia refringens. Si, pour le premier de ces parasites, des huîtres plates tolérantes ont pu être sélectionnées, la marteiliose ne peut être contrôlée que par une gestion du risque de contamination. Dans ce cadre, la connaissance du cycle parasitaire de Marteilia refringens est primordiale. Les travaux réalisés à ce sujet ont permis de poser l'hypothèse d'un cycle hétéroxène. Au cours de notre étude la recherche du parasite a été effectuée sur des espèces du zooplancton, de la méiofaune et de la macrofaune prélevées au sein d'un biotope sélectif, les claires ostréicoles. Le parasite a été recherché par la... |
| Tipo: Text |
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| Ano: 1998 |
URL: http://archimer.ifremer.fr/doc/00426/53786/54686.pdf |
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| Audemard, Corinne; Le Roux, Frédérique; Barnaud, Antoine; Collins, Catherine; Sautour, B; Sauriau, Pierre-guy; De Montaudouin, X; Coustau, C; Combes, C; Berthe, Franck. |
| Marteilia refringens is a major pathogen of the European flat oyster, Ostrea edulis Linnaeus. Since its description, the lifecycle of this protozoan parasite has eluded discovery. Attempts to infect oysters experimentally have been unsuccessful and led to the hypothesis of a complex life-cycle involving several hosts. Knowledge of this life-cycle is of central importance in order to manage oyster disease. However, the exploration of M. refringens life-cycle has been previously limited by the detection tools available and the tremendous number of species to be screened in enzootic areas. In this study, these two restrictions were circumvented by the use of both molecular detection tools and a mesocosm with low biodiversity. Screening of the entire fauna of... |
| Tipo: Text |
Palavras-chave: Experimental transmission; In situ hybridization; PCR; Paracartia grani; Ostrea edulis; Marteilia refringens. |
| Ano: 2002 |
URL: http://archimer.ifremer.fr/doc/2002/publication-2778.pdf |
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| 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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