Effect of environmental and nutritive conditionings on defense mechanisms of oyster Crassostrea gigas during an annual cycle
In the frame of MOREST project, a common biological material, resulting of a mixture of different families produced in experimental hatchery, was reared in two different environmental fields : Normandy and Charente. Concomitantly, a pool was conditioned at the Ifremer Argenton hatchery with three di...
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National Shellfishery Association (NSA) 2003
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ftarchimer:oai:archimer.ifremer.fr:3500 2023-05-15T15:57:53+02:00 Effect of environmental and nutritive conditionings on defense mechanisms of oyster Crassostrea gigas during an annual cycle Delaporte, Maryse Moal, Jeanne Soudant, Philippe Lambert, Christophe Pouvreau, Stephane Enriquez, Martha Degremont, Lionel Soletchnik, Patrick Gagnaire, Beatrice Ropert, Michel 2003-04-13 application/pdf https://archimer.ifremer.fr/doc/2003/acte-3500.pdf https://archimer.ifremer.fr/doc/00000/3500/ eng eng National Shellfishery Association (NSA) 2003 https://archimer.ifremer.fr/doc/2003/acte-3500.pdf https://archimer.ifremer.fr/doc/00000/3500/ info:eu-repo/semantics/openAccess restricted use Defense mechanisms Nutrition Seasonal variations Physiology Crassostrea gigas Pacific oysters text Slideshow info:eu-repo/semantics/conferenceObject 2003 ftarchimer 2021-09-23T20:15:24Z In the frame of MOREST project, a common biological material, resulting of a mixture of different families produced in experimental hatchery, was reared in two different environmental fields : Normandy and Charente. Concomitantly, a pool was conditioned at the Ifremer Argenton hatchery with three different algae levels : 4%, 8% and 12% of algal dry weight per oyster dry weight. During the experiments, five immune parameters were studied in parallel with survival rate and reproductive status (stages and intensity). Site location, seasonal variations and experimental diet level clearly influenced oyster immune parameters. Haemocyte counts were higher for oysters reared in Normandy than those reared in Charente and in hatchery. Granulocyte percentage was drastically reduced in hatchery conditions compared to in situ conditions. Moreover, hemocyte activities were also affected by the in situ conditions and dietary treatments in relation to reproductive cycle and mortality events. In example, haemocyte adhesion capacities were more affected by the presence of bacteria during high mortality period. Conference Object Crassostrea gigas Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) Pacific |
institution |
Open Polar |
collection |
Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
op_collection_id |
ftarchimer |
language |
English |
topic |
Defense mechanisms Nutrition Seasonal variations Physiology Crassostrea gigas Pacific oysters |
spellingShingle |
Defense mechanisms Nutrition Seasonal variations Physiology Crassostrea gigas Pacific oysters Delaporte, Maryse Moal, Jeanne Soudant, Philippe Lambert, Christophe Pouvreau, Stephane Enriquez, Martha Degremont, Lionel Soletchnik, Patrick Gagnaire, Beatrice Ropert, Michel Effect of environmental and nutritive conditionings on defense mechanisms of oyster Crassostrea gigas during an annual cycle |
topic_facet |
Defense mechanisms Nutrition Seasonal variations Physiology Crassostrea gigas Pacific oysters |
description |
In the frame of MOREST project, a common biological material, resulting of a mixture of different families produced in experimental hatchery, was reared in two different environmental fields : Normandy and Charente. Concomitantly, a pool was conditioned at the Ifremer Argenton hatchery with three different algae levels : 4%, 8% and 12% of algal dry weight per oyster dry weight. During the experiments, five immune parameters were studied in parallel with survival rate and reproductive status (stages and intensity). Site location, seasonal variations and experimental diet level clearly influenced oyster immune parameters. Haemocyte counts were higher for oysters reared in Normandy than those reared in Charente and in hatchery. Granulocyte percentage was drastically reduced in hatchery conditions compared to in situ conditions. Moreover, hemocyte activities were also affected by the in situ conditions and dietary treatments in relation to reproductive cycle and mortality events. In example, haemocyte adhesion capacities were more affected by the presence of bacteria during high mortality period. |
format |
Conference Object |
author |
Delaporte, Maryse Moal, Jeanne Soudant, Philippe Lambert, Christophe Pouvreau, Stephane Enriquez, Martha Degremont, Lionel Soletchnik, Patrick Gagnaire, Beatrice Ropert, Michel |
author_facet |
Delaporte, Maryse Moal, Jeanne Soudant, Philippe Lambert, Christophe Pouvreau, Stephane Enriquez, Martha Degremont, Lionel Soletchnik, Patrick Gagnaire, Beatrice Ropert, Michel |
author_sort |
Delaporte, Maryse |
title |
Effect of environmental and nutritive conditionings on defense mechanisms of oyster Crassostrea gigas during an annual cycle |
title_short |
Effect of environmental and nutritive conditionings on defense mechanisms of oyster Crassostrea gigas during an annual cycle |
title_full |
Effect of environmental and nutritive conditionings on defense mechanisms of oyster Crassostrea gigas during an annual cycle |
title_fullStr |
Effect of environmental and nutritive conditionings on defense mechanisms of oyster Crassostrea gigas during an annual cycle |
title_full_unstemmed |
Effect of environmental and nutritive conditionings on defense mechanisms of oyster Crassostrea gigas during an annual cycle |
title_sort |
effect of environmental and nutritive conditionings on defense mechanisms of oyster crassostrea gigas during an annual cycle |
publisher |
National Shellfishery Association (NSA) 2003 |
publishDate |
2003 |
url |
https://archimer.ifremer.fr/doc/2003/acte-3500.pdf https://archimer.ifremer.fr/doc/00000/3500/ |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_relation |
https://archimer.ifremer.fr/doc/2003/acte-3500.pdf https://archimer.ifremer.fr/doc/00000/3500/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
_version_ |
1766393595909111808 |