Growth of the Pacific oyster (Crassostrea gigas) in a high-turbidity environment: Comparison of model simulations based on scope for growth and dynamic energy budgets
International audience We compared growth simulations by dynamic energy budget (DEB) and scope for growth (SFG) models of the Pacific oyster Crassostrea gigas, cultivated in Bourgneuf Bay on the French Atlantic coast. This bay is located at a latitude in the middle of the European range of the speci...
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ftunivbrest:oai:HAL:hal-04499013v1 2024-04-14T08:10:41+00:00 Growth of the Pacific oyster (Crassostrea gigas) in a high-turbidity environment: Comparison of model simulations based on scope for growth and dynamic energy budgets Barille, Laurent Lerouxel, Astrid Dutertre, Mickael Haure, Joel Barille, Anne-Laure Pouvreau, Stephane Alunno-Bruscia, Marianne Unité Amélioration génétique, Santé animale et Environnement (AGSAE) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) 2011-11 https://hal.science/hal-04499013 https://hal.science/hal-04499013/document https://hal.science/hal-04499013/file/12783.pdf https://doi.org/10.1016/j.seares.2011.07.004 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.seares.2011.07.004 hal-04499013 https://hal.science/hal-04499013 https://hal.science/hal-04499013/document https://hal.science/hal-04499013/file/12783.pdf doi:10.1016/j.seares.2011.07.004 info:eu-repo/semantics/OpenAccess ISSN: 1385-1101 EISSN: 1873-1414 Journal of Sea Research (JSR) https://hal.science/hal-04499013 Journal of Sea Research (JSR), 2011, 66 (4), pp.392-402. ⟨10.1016/j.seares.2011.07.004⟩ [SDV]Life Sciences [q-bio] info:eu-repo/semantics/article Journal articles 2011 ftunivbrest https://doi.org/10.1016/j.seares.2011.07.004 2024-03-21T16:21:06Z International audience We compared growth simulations by dynamic energy budget (DEB) and scope for growth (SFG) models of the Pacific oyster Crassostrea gigas, cultivated in Bourgneuf Bay on the French Atlantic coast. This bay is located at a latitude in the middle of the European range of the species, and is characterized by high concentrations of suspended particulate matter (SPM) and a marked gradient between high-turbidity sites in the north (daily SPM > 500 mg L-1) and intermediate-turbidity sites in the south. The models use two forcing variables: seawater temperature and food density. We tested two indices of food availability: chlorophyll a and microalgal concentrations. In the SFG model, food intake is simulated by a type-II Holling functional response, as in the DEB formulation, and the effect of turbidity in both models is therefore taken into account principally through the half-saturation coefficient for this functional response. Chlorophyll a concentrations were three to four times higher at the high-turbidity site, but oyster growth rates were significantly lower at this site than at the intermediate-turbidity site. A comparison of observed and simulated values showed that the DEB model performed better than the SFG model if microalgal concentration was used as an index of food availability, with the SFG model underestimating oyster growth in summer and autumn. However, the SFG model was much more efficient if chlorophyll a concentrations were used, with the DEB model systematically overestimating summer and autumn growth. This comparison suggests that both SFG and DEB simulations could be improved, to give a more accurate description of oyster growth in a turbid environment, and that the pre-ingestive selection mechanisms used by suspension feeders in turbid environments should probably be included in the formulation of feeding processes. Article in Journal/Newspaper Crassostrea gigas Pacific oyster Université de Bretagne Occidentale: HAL Pacific Journal of Sea Research 66 4 392 402 |
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collection |
Université de Bretagne Occidentale: HAL |
op_collection_id |
ftunivbrest |
language |
English |
topic |
[SDV]Life Sciences [q-bio] |
spellingShingle |
[SDV]Life Sciences [q-bio] Barille, Laurent Lerouxel, Astrid Dutertre, Mickael Haure, Joel Barille, Anne-Laure Pouvreau, Stephane Alunno-Bruscia, Marianne Growth of the Pacific oyster (Crassostrea gigas) in a high-turbidity environment: Comparison of model simulations based on scope for growth and dynamic energy budgets |
topic_facet |
[SDV]Life Sciences [q-bio] |
description |
International audience We compared growth simulations by dynamic energy budget (DEB) and scope for growth (SFG) models of the Pacific oyster Crassostrea gigas, cultivated in Bourgneuf Bay on the French Atlantic coast. This bay is located at a latitude in the middle of the European range of the species, and is characterized by high concentrations of suspended particulate matter (SPM) and a marked gradient between high-turbidity sites in the north (daily SPM > 500 mg L-1) and intermediate-turbidity sites in the south. The models use two forcing variables: seawater temperature and food density. We tested two indices of food availability: chlorophyll a and microalgal concentrations. In the SFG model, food intake is simulated by a type-II Holling functional response, as in the DEB formulation, and the effect of turbidity in both models is therefore taken into account principally through the half-saturation coefficient for this functional response. Chlorophyll a concentrations were three to four times higher at the high-turbidity site, but oyster growth rates were significantly lower at this site than at the intermediate-turbidity site. A comparison of observed and simulated values showed that the DEB model performed better than the SFG model if microalgal concentration was used as an index of food availability, with the SFG model underestimating oyster growth in summer and autumn. However, the SFG model was much more efficient if chlorophyll a concentrations were used, with the DEB model systematically overestimating summer and autumn growth. This comparison suggests that both SFG and DEB simulations could be improved, to give a more accurate description of oyster growth in a turbid environment, and that the pre-ingestive selection mechanisms used by suspension feeders in turbid environments should probably be included in the formulation of feeding processes. |
author2 |
Unité Amélioration génétique, Santé animale et Environnement (AGSAE) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) Laboratoire des Sciences de l'Environnement Marin (LEMAR) (LEMAR) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Brest (UBO)-Institut Universitaire Européen de la Mer (IUEM) Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Institut de Recherche pour le Développement (IRD)-Institut national des sciences de l'Univers (INSU - CNRS)-Université de Brest (UBO)-Centre National de la Recherche Scientifique (CNRS)-Centre National de la Recherche Scientifique (CNRS) |
format |
Article in Journal/Newspaper |
author |
Barille, Laurent Lerouxel, Astrid Dutertre, Mickael Haure, Joel Barille, Anne-Laure Pouvreau, Stephane Alunno-Bruscia, Marianne |
author_facet |
Barille, Laurent Lerouxel, Astrid Dutertre, Mickael Haure, Joel Barille, Anne-Laure Pouvreau, Stephane Alunno-Bruscia, Marianne |
author_sort |
Barille, Laurent |
title |
Growth of the Pacific oyster (Crassostrea gigas) in a high-turbidity environment: Comparison of model simulations based on scope for growth and dynamic energy budgets |
title_short |
Growth of the Pacific oyster (Crassostrea gigas) in a high-turbidity environment: Comparison of model simulations based on scope for growth and dynamic energy budgets |
title_full |
Growth of the Pacific oyster (Crassostrea gigas) in a high-turbidity environment: Comparison of model simulations based on scope for growth and dynamic energy budgets |
title_fullStr |
Growth of the Pacific oyster (Crassostrea gigas) in a high-turbidity environment: Comparison of model simulations based on scope for growth and dynamic energy budgets |
title_full_unstemmed |
Growth of the Pacific oyster (Crassostrea gigas) in a high-turbidity environment: Comparison of model simulations based on scope for growth and dynamic energy budgets |
title_sort |
growth of the pacific oyster (crassostrea gigas) in a high-turbidity environment: comparison of model simulations based on scope for growth and dynamic energy budgets |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-04499013 https://hal.science/hal-04499013/document https://hal.science/hal-04499013/file/12783.pdf https://doi.org/10.1016/j.seares.2011.07.004 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_source |
ISSN: 1385-1101 EISSN: 1873-1414 Journal of Sea Research (JSR) https://hal.science/hal-04499013 Journal of Sea Research (JSR), 2011, 66 (4), pp.392-402. ⟨10.1016/j.seares.2011.07.004⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.seares.2011.07.004 hal-04499013 https://hal.science/hal-04499013 https://hal.science/hal-04499013/document https://hal.science/hal-04499013/file/12783.pdf doi:10.1016/j.seares.2011.07.004 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.seares.2011.07.004 |
container_title |
Journal of Sea Research |
container_volume |
66 |
container_issue |
4 |
container_start_page |
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op_container_end_page |
402 |
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