Effect of phytoplankton and temperature on the reproduction of the Pacific oyster Crassostrea gigas: investigation through DEB theory
International audience DEB theory can be used to obtain a detailed description of energy allocation in organisms and the control of this allocation by temperature and food concentration. In this study, we modified the model of Bourlès et al. (2009) developed for the Pacific oyster, Crassostrea gigas...
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Online Access: | https://hal.science/hal-04499092 https://hal.science/hal-04499092/document https://hal.science/hal-04499092/file/14606.pdf https://doi.org/10.1016/j.seares.2011.07.009 |
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ftunivbrest:oai:HAL:hal-04499092v1 2024-04-14T08:10:36+00:00 Effect of phytoplankton and temperature on the reproduction of the Pacific oyster Crassostrea gigas: investigation through DEB theory Effet du phytoplancton et de la température sur la reproduction de l'huitre creuse, Crassostrea gigas: Analyse au travers de la théorie DEB Bernard, Ismael de Kermoysan, Goulwen Pouvreau, Stephane 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-04499092 https://hal.science/hal-04499092/document https://hal.science/hal-04499092/file/14606.pdf https://doi.org/10.1016/j.seares.2011.07.009 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.seares.2011.07.009 hal-04499092 https://hal.science/hal-04499092 https://hal.science/hal-04499092/document https://hal.science/hal-04499092/file/14606.pdf doi:10.1016/j.seares.2011.07.009 info:eu-repo/semantics/OpenAccess ISSN: 1385-1101 EISSN: 1873-1414 Journal of Sea Research (JSR) https://hal.science/hal-04499092 Journal of Sea Research (JSR), 2011, 66 (4), pp.349-360. ⟨10.1016/j.seares.2011.07.009⟩ [SDV]Life Sciences [q-bio] info:eu-repo/semantics/article Journal articles 2011 ftunivbrest https://doi.org/10.1016/j.seares.2011.07.009 2024-03-21T16:21:06Z International audience DEB theory can be used to obtain a detailed description of energy allocation in organisms and the control of this allocation by temperature and food concentration. In this study, we modified the model of Bourlès et al. (2009) developed for the Pacific oyster, Crassostrea gigas, to improve the description of reproductive effort. The model was amended in two ways: a new set of parameters was incorporated and a full description of gonad construction in spring was added, with a new state variable. The application of this model to a dataset for oyster growth measured in four bays over two years showed that this model better described reproductive effort, without modifying overall growth dynamics. We then explored the reproductive responses of oysters to their environment in greater detail, by applying this new version of the model with the theoretical forcing variables of phytoplankton concentration and temperature. Spawning time was found to be driving principally by yearly mean temperature, and reproductive effort was found to depend mostly on the halfsaturation coefficient of the functional response. These results highlight the importance of the half-saturation coefficient and provide additional support for field research on the food preferences of oysters. Article in Journal/Newspaper Crassostrea gigas Pacific oyster Université de Bretagne Occidentale: HAL Pacific Journal of Sea Research 66 4 349 360 |
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Open Polar |
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Université de Bretagne Occidentale: HAL |
op_collection_id |
ftunivbrest |
language |
English |
topic |
[SDV]Life Sciences [q-bio] |
spellingShingle |
[SDV]Life Sciences [q-bio] Bernard, Ismael de Kermoysan, Goulwen Pouvreau, Stephane Effect of phytoplankton and temperature on the reproduction of the Pacific oyster Crassostrea gigas: investigation through DEB theory |
topic_facet |
[SDV]Life Sciences [q-bio] |
description |
International audience DEB theory can be used to obtain a detailed description of energy allocation in organisms and the control of this allocation by temperature and food concentration. In this study, we modified the model of Bourlès et al. (2009) developed for the Pacific oyster, Crassostrea gigas, to improve the description of reproductive effort. The model was amended in two ways: a new set of parameters was incorporated and a full description of gonad construction in spring was added, with a new state variable. The application of this model to a dataset for oyster growth measured in four bays over two years showed that this model better described reproductive effort, without modifying overall growth dynamics. We then explored the reproductive responses of oysters to their environment in greater detail, by applying this new version of the model with the theoretical forcing variables of phytoplankton concentration and temperature. Spawning time was found to be driving principally by yearly mean temperature, and reproductive effort was found to depend mostly on the halfsaturation coefficient of the functional response. These results highlight the importance of the half-saturation coefficient and provide additional support for field research on the food preferences of oysters. |
author2 |
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 |
Bernard, Ismael de Kermoysan, Goulwen Pouvreau, Stephane |
author_facet |
Bernard, Ismael de Kermoysan, Goulwen Pouvreau, Stephane |
author_sort |
Bernard, Ismael |
title |
Effect of phytoplankton and temperature on the reproduction of the Pacific oyster Crassostrea gigas: investigation through DEB theory |
title_short |
Effect of phytoplankton and temperature on the reproduction of the Pacific oyster Crassostrea gigas: investigation through DEB theory |
title_full |
Effect of phytoplankton and temperature on the reproduction of the Pacific oyster Crassostrea gigas: investigation through DEB theory |
title_fullStr |
Effect of phytoplankton and temperature on the reproduction of the Pacific oyster Crassostrea gigas: investigation through DEB theory |
title_full_unstemmed |
Effect of phytoplankton and temperature on the reproduction of the Pacific oyster Crassostrea gigas: investigation through DEB theory |
title_sort |
effect of phytoplankton and temperature on the reproduction of the pacific oyster crassostrea gigas: investigation through deb theory |
publisher |
HAL CCSD |
publishDate |
2011 |
url |
https://hal.science/hal-04499092 https://hal.science/hal-04499092/document https://hal.science/hal-04499092/file/14606.pdf https://doi.org/10.1016/j.seares.2011.07.009 |
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-04499092 Journal of Sea Research (JSR), 2011, 66 (4), pp.349-360. ⟨10.1016/j.seares.2011.07.009⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.seares.2011.07.009 hal-04499092 https://hal.science/hal-04499092 https://hal.science/hal-04499092/document https://hal.science/hal-04499092/file/14606.pdf doi:10.1016/j.seares.2011.07.009 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.seares.2011.07.009 |
container_title |
Journal of Sea Research |
container_volume |
66 |
container_issue |
4 |
container_start_page |
349 |
op_container_end_page |
360 |
_version_ |
1796308211269107712 |