Bioactive extracellular compounds produced by the dinoflagellate Alexandrium minutum are highly detrimental for oysters
International audience Blooms of the dinoflagellate Alexandrium spp., known as producers of paralytic shellfish toxins (PSTs), are regularly detected on the French coastline. PSTs accumulate into harvested shellfish species, such as the Pacific oyster Crassostrea gigas, and can cause strong disorder...
Published in: | Aquatic Toxicology |
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Main Authors: | , , , , , , , , , , , , |
Other Authors: | , , , , , , , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2018
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Subjects: | |
Online Access: | https://hal.science/hal-02324608 https://hal.science/hal-02324608/document https://hal.science/hal-02324608/file/Castrec_etal_AT_2018.pdf https://doi.org/10.1016/j.aquatox.2018.03.034 |
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ftunivnantes:oai:HAL:hal-02324608v1 |
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openpolar |
institution |
Open Polar |
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Université de Nantes: HAL-UNIV-NANTES |
op_collection_id |
ftunivnantes |
language |
English |
topic |
Harmful algal bloom (HAB) Crassostrea gigas Paralytic shellfish toxins (PST) Bioactive extracellular compounds (BEC) Histology Behavior ACL [SDV.TOX]Life Sciences [q-bio]/Toxicology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
Harmful algal bloom (HAB) Crassostrea gigas Paralytic shellfish toxins (PST) Bioactive extracellular compounds (BEC) Histology Behavior ACL [SDV.TOX]Life Sciences [q-bio]/Toxicology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Castrec, Justine Soudant, Philippe Payton, Laura Tran, Damien Miner, Philippe Lambert, Christophe Le Goïc, Nelly Huvet, Arnaud Quillien, Virgile Boullot, Floriane Amzil, Zouher Hegaret, Helene Fabioux, Caroline Bioactive extracellular compounds produced by the dinoflagellate Alexandrium minutum are highly detrimental for oysters |
topic_facet |
Harmful algal bloom (HAB) Crassostrea gigas Paralytic shellfish toxins (PST) Bioactive extracellular compounds (BEC) Histology Behavior ACL [SDV.TOX]Life Sciences [q-bio]/Toxicology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience Blooms of the dinoflagellate Alexandrium spp., known as producers of paralytic shellfish toxins (PSTs), are regularly detected on the French coastline. PSTs accumulate into harvested shellfish species, such as the Pacific oyster Crassostrea gigas, and can cause strong disorders to consumers at high doses. The impacts of Alexandrium minutum on C. gigas have often been attributed to its production of PSTs without testing separately the effects of the bioactive extracellular compounds (BECs) with allelopathic, hemolytic, cytotoxic or ichthyotoxic properties, which can also be produced by these algae. The BECs, still uncharacterized, are excreted within the environment thereby impacting not only phytoplankton, zooplankton but also marine invertebrates and fishes, without implicating any PST. The aim of this work was to compare the effects of three strains of A. minutum producing either only PSTs, only BECs, or both PSTs and BECs, on the oyster C. gigas. Behavioral and physiological responses of oysters exposed during 4 days were monitored and showed contrasted behavioral and physiological responses in oysters supposedly depending on produced bioactive substances. The non-PST extracellular-compound-producing strain primarily strongly modified valve-activity behavior of C. gigas and induced hemocyte mobilization within the gills, whereas the PST-producing strain caused inflammatory responses within the digestive gland and disrupted the daily biological rhythm of valve activity behavior. BECs may therefore have a significant harmful effect on the gills, which is one of the first organ in contact with the extracellular substances released in the water by A. minutum. Conversely, the PSTs impact the digestive gland, where they are released and mainly accumulated, after degradation of algal cells during digestion process of bivalves. This study provides a better understanding of the toxicity of A. minutum on oyster and highlights the significant role of BECs in this toxicity calling for further ... |
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) UMR 5805 Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) ANR-13-CESA-0019,ACCUTOX,De la caractérisation des déterminants de l'accumulation des toxines paralysantes (PST) chez l'huître (Crassostrea gigas) au risque sanitaire pour l'homme dans son contexte sociétal(2013) |
format |
Article in Journal/Newspaper |
author |
Castrec, Justine Soudant, Philippe Payton, Laura Tran, Damien Miner, Philippe Lambert, Christophe Le Goïc, Nelly Huvet, Arnaud Quillien, Virgile Boullot, Floriane Amzil, Zouher Hegaret, Helene Fabioux, Caroline |
author_facet |
Castrec, Justine Soudant, Philippe Payton, Laura Tran, Damien Miner, Philippe Lambert, Christophe Le Goïc, Nelly Huvet, Arnaud Quillien, Virgile Boullot, Floriane Amzil, Zouher Hegaret, Helene Fabioux, Caroline |
author_sort |
Castrec, Justine |
title |
Bioactive extracellular compounds produced by the dinoflagellate Alexandrium minutum are highly detrimental for oysters |
title_short |
Bioactive extracellular compounds produced by the dinoflagellate Alexandrium minutum are highly detrimental for oysters |
title_full |
Bioactive extracellular compounds produced by the dinoflagellate Alexandrium minutum are highly detrimental for oysters |
title_fullStr |
Bioactive extracellular compounds produced by the dinoflagellate Alexandrium minutum are highly detrimental for oysters |
title_full_unstemmed |
Bioactive extracellular compounds produced by the dinoflagellate Alexandrium minutum are highly detrimental for oysters |
title_sort |
bioactive extracellular compounds produced by the dinoflagellate alexandrium minutum are highly detrimental for oysters |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.science/hal-02324608 https://hal.science/hal-02324608/document https://hal.science/hal-02324608/file/Castrec_etal_AT_2018.pdf https://doi.org/10.1016/j.aquatox.2018.03.034 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_source |
ISSN: 0166-445X Aquatic Toxicology https://hal.science/hal-02324608 Aquatic Toxicology, 2018, 199, pp.188-198. ⟨10.1016/j.aquatox.2018.03.034⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.aquatox.2018.03.034 hal-02324608 https://hal.science/hal-02324608 https://hal.science/hal-02324608/document https://hal.science/hal-02324608/file/Castrec_etal_AT_2018.pdf doi:10.1016/j.aquatox.2018.03.034 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.aquatox.2018.03.034 |
container_title |
Aquatic Toxicology |
container_volume |
199 |
container_start_page |
188 |
op_container_end_page |
198 |
_version_ |
1766394271088246784 |
spelling |
ftunivnantes:oai:HAL:hal-02324608v1 2023-05-15T15:58:31+02:00 Bioactive extracellular compounds produced by the dinoflagellate Alexandrium minutum are highly detrimental for oysters Castrec, Justine Soudant, Philippe Payton, Laura Tran, Damien Miner, Philippe Lambert, Christophe Le Goïc, Nelly Huvet, Arnaud Quillien, Virgile Boullot, Floriane Amzil, Zouher Hegaret, Helene Fabioux, Caroline 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) UMR 5805 Environnements et Paléoenvironnements Océaniques et Continentaux (EPOC) Observatoire aquitain des sciences de l'univers (OASU) Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-Université Sciences et Technologies - Bordeaux 1 (UB)-Institut national des sciences de l'Univers (INSU - CNRS)-Centre National de la Recherche Scientifique (CNRS)-École pratique des hautes études (EPHE) Université Paris sciences et lettres (PSL)-Université Paris sciences et lettres (PSL)-Centre National de la Recherche Scientifique (CNRS) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) ANR-13-CESA-0019,ACCUTOX,De la caractérisation des déterminants de l'accumulation des toxines paralysantes (PST) chez l'huître (Crassostrea gigas) au risque sanitaire pour l'homme dans son contexte sociétal(2013) 2018 https://hal.science/hal-02324608 https://hal.science/hal-02324608/document https://hal.science/hal-02324608/file/Castrec_etal_AT_2018.pdf https://doi.org/10.1016/j.aquatox.2018.03.034 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.aquatox.2018.03.034 hal-02324608 https://hal.science/hal-02324608 https://hal.science/hal-02324608/document https://hal.science/hal-02324608/file/Castrec_etal_AT_2018.pdf doi:10.1016/j.aquatox.2018.03.034 info:eu-repo/semantics/OpenAccess ISSN: 0166-445X Aquatic Toxicology https://hal.science/hal-02324608 Aquatic Toxicology, 2018, 199, pp.188-198. ⟨10.1016/j.aquatox.2018.03.034⟩ Harmful algal bloom (HAB) Crassostrea gigas Paralytic shellfish toxins (PST) Bioactive extracellular compounds (BEC) Histology Behavior ACL [SDV.TOX]Life Sciences [q-bio]/Toxicology [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2018 ftunivnantes https://doi.org/10.1016/j.aquatox.2018.03.034 2023-02-08T06:46:36Z International audience Blooms of the dinoflagellate Alexandrium spp., known as producers of paralytic shellfish toxins (PSTs), are regularly detected on the French coastline. PSTs accumulate into harvested shellfish species, such as the Pacific oyster Crassostrea gigas, and can cause strong disorders to consumers at high doses. The impacts of Alexandrium minutum on C. gigas have often been attributed to its production of PSTs without testing separately the effects of the bioactive extracellular compounds (BECs) with allelopathic, hemolytic, cytotoxic or ichthyotoxic properties, which can also be produced by these algae. The BECs, still uncharacterized, are excreted within the environment thereby impacting not only phytoplankton, zooplankton but also marine invertebrates and fishes, without implicating any PST. The aim of this work was to compare the effects of three strains of A. minutum producing either only PSTs, only BECs, or both PSTs and BECs, on the oyster C. gigas. Behavioral and physiological responses of oysters exposed during 4 days were monitored and showed contrasted behavioral and physiological responses in oysters supposedly depending on produced bioactive substances. The non-PST extracellular-compound-producing strain primarily strongly modified valve-activity behavior of C. gigas and induced hemocyte mobilization within the gills, whereas the PST-producing strain caused inflammatory responses within the digestive gland and disrupted the daily biological rhythm of valve activity behavior. BECs may therefore have a significant harmful effect on the gills, which is one of the first organ in contact with the extracellular substances released in the water by A. minutum. Conversely, the PSTs impact the digestive gland, where they are released and mainly accumulated, after degradation of algal cells during digestion process of bivalves. This study provides a better understanding of the toxicity of A. minutum on oyster and highlights the significant role of BECs in this toxicity calling for further ... Article in Journal/Newspaper Crassostrea gigas Pacific oyster Université de Nantes: HAL-UNIV-NANTES Pacific Aquatic Toxicology 199 188 198 |