Modeling Japanese oyster physiological processes under natural tidal variation in suspended particulate matter
Feeding and growth of the Japanese oyster Crassostrea gigas is simulated by a deterministic model. However, physiological processes, estimated by statistical relationships, have not been tested under extreme environmental conditions such as high level of suspended particulate matter. Ecophysiologica...
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ftarchimer:oai:archimer.ifremer.fr:3827 2023-05-15T15:58:43+02:00 Modeling Japanese oyster physiological processes under natural tidal variation in suspended particulate matter Barille, Laurent Prou, Jean 1993-10 application/pdf https://archimer.ifremer.fr/doc/1993/acte-3827.PDF https://archimer.ifremer.fr/doc/00000/3827/ eng eng Counc. Meet. of the Int. Counc. for the Exploration of the Sea, [Dublin (Eire)], [23 Sep - 1 Oct 1993] https://archimer.ifremer.fr/doc/1993/acte-3827.PDF https://archimer.ifremer.fr/doc/00000/3827/ info:eu-repo/semantics/openAccess restricted use Tidal cycles Oysters culture Growth Feeding Energy budget Ecophysiology text Conference article info:eu-repo/semantics/conferenceObject 1993 ftarchimer 2021-09-23T20:15:38Z Feeding and growth of the Japanese oyster Crassostrea gigas is simulated by a deterministic model. However, physiological processes, estimated by statistical relationships, have not been tested under extreme environmental conditions such as high level of suspended particulate matter. Ecophysiological experiments were therefore conducted in situ in the Bay of Marennes-Oléron during a spring and neap tide cycle in May 1991, to get a better representation of 2 important components of the energy budget of the Japanese oyster: clearance rate and selection efficiency. The relationships previously established by Raillard et al. (1993) are re-evaluated by integrating the action of high seston load, typical of tidal effect within estuaries, on the physiological processes. For the clearance rate, the re-evaluated parameterization includes: - a negative effect of turbidity. - a clogging threshold set to 192 mg/l. Selection efficiency parameterizations are modified by incorporating : - a constant inorganic ingestion for increasing seston load, set to 17 % of the inorganic filtered ration. - an upper selection threshold for the particulate organic matter caused by an overload of particulate material. This threshold was set to 160 mg/l. The oyster growth model should be enhanced by integrating theses new equations built-up on realistic field conditions, where food availability is regulated by tidal variation. Conference Object Crassostrea gigas Archimer (Archive Institutionnelle de l'Ifremer - Institut français de recherche pour l'exploitation de la mer) |
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 |
Tidal cycles Oysters culture Growth Feeding Energy budget Ecophysiology |
spellingShingle |
Tidal cycles Oysters culture Growth Feeding Energy budget Ecophysiology Barille, Laurent Prou, Jean Modeling Japanese oyster physiological processes under natural tidal variation in suspended particulate matter |
topic_facet |
Tidal cycles Oysters culture Growth Feeding Energy budget Ecophysiology |
description |
Feeding and growth of the Japanese oyster Crassostrea gigas is simulated by a deterministic model. However, physiological processes, estimated by statistical relationships, have not been tested under extreme environmental conditions such as high level of suspended particulate matter. Ecophysiological experiments were therefore conducted in situ in the Bay of Marennes-Oléron during a spring and neap tide cycle in May 1991, to get a better representation of 2 important components of the energy budget of the Japanese oyster: clearance rate and selection efficiency. The relationships previously established by Raillard et al. (1993) are re-evaluated by integrating the action of high seston load, typical of tidal effect within estuaries, on the physiological processes. For the clearance rate, the re-evaluated parameterization includes: - a negative effect of turbidity. - a clogging threshold set to 192 mg/l. Selection efficiency parameterizations are modified by incorporating : - a constant inorganic ingestion for increasing seston load, set to 17 % of the inorganic filtered ration. - an upper selection threshold for the particulate organic matter caused by an overload of particulate material. This threshold was set to 160 mg/l. The oyster growth model should be enhanced by integrating theses new equations built-up on realistic field conditions, where food availability is regulated by tidal variation. |
format |
Conference Object |
author |
Barille, Laurent Prou, Jean |
author_facet |
Barille, Laurent Prou, Jean |
author_sort |
Barille, Laurent |
title |
Modeling Japanese oyster physiological processes under natural tidal variation in suspended particulate matter |
title_short |
Modeling Japanese oyster physiological processes under natural tidal variation in suspended particulate matter |
title_full |
Modeling Japanese oyster physiological processes under natural tidal variation in suspended particulate matter |
title_fullStr |
Modeling Japanese oyster physiological processes under natural tidal variation in suspended particulate matter |
title_full_unstemmed |
Modeling Japanese oyster physiological processes under natural tidal variation in suspended particulate matter |
title_sort |
modeling japanese oyster physiological processes under natural tidal variation in suspended particulate matter |
publisher |
Counc. Meet. of the Int. Counc. for the Exploration of the Sea, [Dublin (Eire)], [23 Sep - 1 Oct 1993] |
publishDate |
1993 |
url |
https://archimer.ifremer.fr/doc/1993/acte-3827.PDF https://archimer.ifremer.fr/doc/00000/3827/ |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_relation |
https://archimer.ifremer.fr/doc/1993/acte-3827.PDF https://archimer.ifremer.fr/doc/00000/3827/ |
op_rights |
info:eu-repo/semantics/openAccess restricted use |
_version_ |
1766394480580100096 |