The toxic dinoflagellate Alexandrium minutum impairs the performance of oyster embryos and larvae
International audience The dinoflagellate genus Alexandrium comprises species that produce highly potent neurotoxins known as paralytic shellfish toxins (PST), and bioactive extracellular compounds (BEC) of unknown structure and ecological significance. The toxic bloom-forming species, Alexandrium m...
Published in: | Harmful Algae |
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Main Authors: | , , , , , , , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2020
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Online Access: | https://hal.science/hal-02879884 https://hal.science/hal-02879884/document https://hal.science/hal-02879884/file/Castrec_et%20al%202020%20HAL%20The%20toxic%20dinoflagellate%20Alexandrium%20minutum%20impairs%20the%20performance%20of%20oyster%20embryos%20and%20larvae.pdf https://doi.org/10.1016/j.hal.2020.101744 |
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Université de Bretagne Occidentale: HAL |
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ftunivbrest |
language |
English |
topic |
Harmful Algal Bloom (HAB) Bioactive Extracellular Compounds (BEC) Paralytic Shellfish Toxin (PST) Crassostrea gigas embryo larvae bivalve [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology [SDV.BA.MVSA]Life Sciences [q-bio]/Animal biology/Veterinary medicine and animal Health [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
spellingShingle |
Harmful Algal Bloom (HAB) Bioactive Extracellular Compounds (BEC) Paralytic Shellfish Toxin (PST) Crassostrea gigas embryo larvae bivalve [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology [SDV.BA.MVSA]Life Sciences [q-bio]/Animal biology/Veterinary medicine and animal Health [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography Castrec, Justine Hegaret, Helene Huber, Matthias Le Grand, Jacqueline Huvet, Arnaud Tallec, Kevin Boulais, Myrina Soudant, Philippe Fabioux, Caroline The toxic dinoflagellate Alexandrium minutum impairs the performance of oyster embryos and larvae |
topic_facet |
Harmful Algal Bloom (HAB) Bioactive Extracellular Compounds (BEC) Paralytic Shellfish Toxin (PST) Crassostrea gigas embryo larvae bivalve [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology [SDV.BA.MVSA]Life Sciences [q-bio]/Animal biology/Veterinary medicine and animal Health [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography |
description |
International audience The dinoflagellate genus Alexandrium comprises species that produce highly potent neurotoxins known as paralytic shellfish toxins (PST), and bioactive extracellular compounds (BEC) of unknown structure and ecological significance. The toxic bloom-forming species, Alexandrium minutum, is distributed worldwide and adversely affects many bivalves including the commercially and ecologically important Pacific oyster, Crassostrea gigas. In France, recurrent A. minutum blooms can co-occur with C. gigas spawning and larval development, and may endanger recruitment and population renewal. The present study explores how A. minutum affects early-oyster development by exposing embryos and larvae, under controlled laboratory conditions, to two strains of A. minutum, producing only BEC or both PST and BEC. Results highlight the major role of BEC in A. minutum toxicity upon oyster development. The BEC strain caused lysis of embryos, the most sensitive stage to A. minutum toxicity among planktonic life-stages. In addition, the non-PST-producing A. minutum strain inhibited hatching, disrupted larval swimming behavior, feeding, growth, and induced drastic decreases in survival and settlement of umbonate and eyed larvae (9 and 68 %, respectively). The findings indicated PST accumulation in oyster larvae (e.g. umbonate stages), possibly impairing development and settlement of larvae in response to the PST-producing strain. This work provides evidences that A. minutum blooms could hamper settlement of shellfish. |
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) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) ISBlue - Interdisciplinary Graduate School for the Blue planet (2017) ANR-17-EURE-0015,ISBlue,Interdisciplinary Graduate School for the Blue planet(2017) |
format |
Article in Journal/Newspaper |
author |
Castrec, Justine Hegaret, Helene Huber, Matthias Le Grand, Jacqueline Huvet, Arnaud Tallec, Kevin Boulais, Myrina Soudant, Philippe Fabioux, Caroline |
author_facet |
Castrec, Justine Hegaret, Helene Huber, Matthias Le Grand, Jacqueline Huvet, Arnaud Tallec, Kevin Boulais, Myrina Soudant, Philippe Fabioux, Caroline |
author_sort |
Castrec, Justine |
title |
The toxic dinoflagellate Alexandrium minutum impairs the performance of oyster embryos and larvae |
title_short |
The toxic dinoflagellate Alexandrium minutum impairs the performance of oyster embryos and larvae |
title_full |
The toxic dinoflagellate Alexandrium minutum impairs the performance of oyster embryos and larvae |
title_fullStr |
The toxic dinoflagellate Alexandrium minutum impairs the performance of oyster embryos and larvae |
title_full_unstemmed |
The toxic dinoflagellate Alexandrium minutum impairs the performance of oyster embryos and larvae |
title_sort |
toxic dinoflagellate alexandrium minutum impairs the performance of oyster embryos and larvae |
publisher |
HAL CCSD |
publishDate |
2020 |
url |
https://hal.science/hal-02879884 https://hal.science/hal-02879884/document https://hal.science/hal-02879884/file/Castrec_et%20al%202020%20HAL%20The%20toxic%20dinoflagellate%20Alexandrium%20minutum%20impairs%20the%20performance%20of%20oyster%20embryos%20and%20larvae.pdf https://doi.org/10.1016/j.hal.2020.101744 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_source |
ISSN: 1568-9883 Harmful Algae https://hal.science/hal-02879884 Harmful Algae, 2020, 92, pp.101744. ⟨10.1016/j.hal.2020.101744⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.hal.2020.101744 hal-02879884 https://hal.science/hal-02879884 https://hal.science/hal-02879884/document https://hal.science/hal-02879884/file/Castrec_et%20al%202020%20HAL%20The%20toxic%20dinoflagellate%20Alexandrium%20minutum%20impairs%20the%20performance%20of%20oyster%20embryos%20and%20larvae.pdf doi:10.1016/j.hal.2020.101744 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.hal.2020.101744 |
container_title |
Harmful Algae |
container_volume |
92 |
container_start_page |
101744 |
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1790599298015035392 |
spelling |
ftunivbrest:oai:HAL:hal-02879884v1 2024-02-11T10:03:08+01:00 The toxic dinoflagellate Alexandrium minutum impairs the performance of oyster embryos and larvae Castrec, Justine Hegaret, Helene Huber, Matthias Le Grand, Jacqueline Huvet, Arnaud Tallec, Kevin Boulais, Myrina Soudant, Philippe 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) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) ISBlue - Interdisciplinary Graduate School for the Blue planet (2017) ANR-17-EURE-0015,ISBlue,Interdisciplinary Graduate School for the Blue planet(2017) 2020 https://hal.science/hal-02879884 https://hal.science/hal-02879884/document https://hal.science/hal-02879884/file/Castrec_et%20al%202020%20HAL%20The%20toxic%20dinoflagellate%20Alexandrium%20minutum%20impairs%20the%20performance%20of%20oyster%20embryos%20and%20larvae.pdf https://doi.org/10.1016/j.hal.2020.101744 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.hal.2020.101744 hal-02879884 https://hal.science/hal-02879884 https://hal.science/hal-02879884/document https://hal.science/hal-02879884/file/Castrec_et%20al%202020%20HAL%20The%20toxic%20dinoflagellate%20Alexandrium%20minutum%20impairs%20the%20performance%20of%20oyster%20embryos%20and%20larvae.pdf doi:10.1016/j.hal.2020.101744 info:eu-repo/semantics/OpenAccess ISSN: 1568-9883 Harmful Algae https://hal.science/hal-02879884 Harmful Algae, 2020, 92, pp.101744. ⟨10.1016/j.hal.2020.101744⟩ Harmful Algal Bloom (HAB) Bioactive Extracellular Compounds (BEC) Paralytic Shellfish Toxin (PST) Crassostrea gigas embryo larvae bivalve [SDV.TOX.ECO]Life Sciences [q-bio]/Toxicology/Ecotoxicology [SDV.BA.MVSA]Life Sciences [q-bio]/Animal biology/Veterinary medicine and animal Health [SDU.STU.OC]Sciences of the Universe [physics]/Earth Sciences/Oceanography info:eu-repo/semantics/article Journal articles 2020 ftunivbrest https://doi.org/10.1016/j.hal.2020.101744 2024-01-23T23:39:43Z International audience The dinoflagellate genus Alexandrium comprises species that produce highly potent neurotoxins known as paralytic shellfish toxins (PST), and bioactive extracellular compounds (BEC) of unknown structure and ecological significance. The toxic bloom-forming species, Alexandrium minutum, is distributed worldwide and adversely affects many bivalves including the commercially and ecologically important Pacific oyster, Crassostrea gigas. In France, recurrent A. minutum blooms can co-occur with C. gigas spawning and larval development, and may endanger recruitment and population renewal. The present study explores how A. minutum affects early-oyster development by exposing embryos and larvae, under controlled laboratory conditions, to two strains of A. minutum, producing only BEC or both PST and BEC. Results highlight the major role of BEC in A. minutum toxicity upon oyster development. The BEC strain caused lysis of embryos, the most sensitive stage to A. minutum toxicity among planktonic life-stages. In addition, the non-PST-producing A. minutum strain inhibited hatching, disrupted larval swimming behavior, feeding, growth, and induced drastic decreases in survival and settlement of umbonate and eyed larvae (9 and 68 %, respectively). The findings indicated PST accumulation in oyster larvae (e.g. umbonate stages), possibly impairing development and settlement of larvae in response to the PST-producing strain. This work provides evidences that A. minutum blooms could hamper settlement of shellfish. Article in Journal/Newspaper Crassostrea gigas Pacific oyster Université de Bretagne Occidentale: HAL Pacific Harmful Algae 92 101744 |