Sources of paralytic shellfish toxin accumulation variability in the Pacific oyster Crassostrea gigas
International audience This study was designed to assess the contribution of feeding behavior to inter-individual variability of paralytic shellfish toxin (PST) accumulation in the Pacific oyster Crassostrea gigas. For this purpose 42 oysters were exposed for 2 days to non-toxic algae and then for 2...
Published in: | Toxicon |
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Main Authors: | , , , , |
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Format: | Article in Journal/Newspaper |
Language: | English |
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HAL CCSD
2018
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Online Access: | https://hal.science/hal-02324600 https://hal.science/hal-02324600/document https://hal.science/hal-02324600/file/Pousse_etal_Toxicon_2018.pdf https://doi.org/10.1016/j.toxicon.2017.12.050 |
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openpolar |
institution |
Open Polar |
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Université de Bretagne Occidentale: HAL |
op_collection_id |
ftunivbrest |
language |
English |
topic |
Alexandrium minutum Paralytic shellfish poisoning Accumulation Clearance rate Feeding behavior Pacific oyster ACL [SDE]Environmental Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV]Life Sciences [q-bio] [SDV.BA]Life Sciences [q-bio]/Animal biology |
spellingShingle |
Alexandrium minutum Paralytic shellfish poisoning Accumulation Clearance rate Feeding behavior Pacific oyster ACL [SDE]Environmental Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV]Life Sciences [q-bio] [SDV.BA]Life Sciences [q-bio]/Animal biology Pousse, Emilien Flye-Sainte-Marie, Jonathan Alunno-Bruscia, Marianne Hegaret, Helene Jean, Frédéric Sources of paralytic shellfish toxin accumulation variability in the Pacific oyster Crassostrea gigas |
topic_facet |
Alexandrium minutum Paralytic shellfish poisoning Accumulation Clearance rate Feeding behavior Pacific oyster ACL [SDE]Environmental Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV]Life Sciences [q-bio] [SDV.BA]Life Sciences [q-bio]/Animal biology |
description |
International audience This study was designed to assess the contribution of feeding behavior to inter-individual variability of paralytic shellfish toxin (PST) accumulation in the Pacific oyster Crassostrea gigas. For this purpose 42 oysters were exposed for 2 days to non-toxic algae and then for 2 other days to the PST producer Alexandrium minutum. Individual clearance rate (CR) of oysters was continuously monitored over the 4 days using an ecophysiological measurement system. Comparison of CR values when exposed to toxic and non toxic algae allowed to estimate a clearance rate inhibition index (CRII). Toxin concentration of oysters was quantified at the end of the experiment. These data allowed to estimate the toxin accumulation efficiency (TAE) as the ratio of toxin accumulated on toxin consumed. Changes of clearance rate during the experiment indicated that all individuals stopped feeding immediately after being exposed to A. minutum for at least 7 h. This fast response likely corresponded to a behavioral mechanism of avoidance rather to a toxin-induced response. Individuals also showed high inter-variability in their recovery of filtration after this period. Most of the inter-individual variability (78%) in PST accumulation in C. gigas could be explained by the consumption of A. minutum cells, thus emphasizing the importance of the feeding behavior in accumulation. Based on the toxin concentration in their tissues, oysters were clustered in 3 groups showing contrasted patterns of PST accumulation: the high accumulation group was characterized by high feeding rates both on non-toxic and toxic diet and subsequently a low CRII and high TAE. Inversely, the low accumulation group was characterized by low filtration rates, high CRII and low TAE. Both filtration capacity and sensitivity of oysters to toxins may account for the differences in their accumulation. The contribution of TAE in PST accumulation is discussed and might result from differences in assimilation and detoxification abilities among ... |
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) 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) ANR-10-LABX-0019,LabexMER,LabexMER Marine Excellence Research: a changing ocean(2010) |
format |
Article in Journal/Newspaper |
author |
Pousse, Emilien Flye-Sainte-Marie, Jonathan Alunno-Bruscia, Marianne Hegaret, Helene Jean, Frédéric |
author_facet |
Pousse, Emilien Flye-Sainte-Marie, Jonathan Alunno-Bruscia, Marianne Hegaret, Helene Jean, Frédéric |
author_sort |
Pousse, Emilien |
title |
Sources of paralytic shellfish toxin accumulation variability in the Pacific oyster Crassostrea gigas |
title_short |
Sources of paralytic shellfish toxin accumulation variability in the Pacific oyster Crassostrea gigas |
title_full |
Sources of paralytic shellfish toxin accumulation variability in the Pacific oyster Crassostrea gigas |
title_fullStr |
Sources of paralytic shellfish toxin accumulation variability in the Pacific oyster Crassostrea gigas |
title_full_unstemmed |
Sources of paralytic shellfish toxin accumulation variability in the Pacific oyster Crassostrea gigas |
title_sort |
sources of paralytic shellfish toxin accumulation variability in the pacific oyster crassostrea gigas |
publisher |
HAL CCSD |
publishDate |
2018 |
url |
https://hal.science/hal-02324600 https://hal.science/hal-02324600/document https://hal.science/hal-02324600/file/Pousse_etal_Toxicon_2018.pdf https://doi.org/10.1016/j.toxicon.2017.12.050 |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_source |
ISSN: 0041-0101 EISSN: 0041-0101 Toxicon https://hal.science/hal-02324600 Toxicon, 2018, 144, pp.14-22. ⟨10.1016/j.toxicon.2017.12.050⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.toxicon.2017.12.050 hal-02324600 https://hal.science/hal-02324600 https://hal.science/hal-02324600/document https://hal.science/hal-02324600/file/Pousse_etal_Toxicon_2018.pdf doi:10.1016/j.toxicon.2017.12.050 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.1016/j.toxicon.2017.12.050 |
container_title |
Toxicon |
container_volume |
144 |
container_start_page |
14 |
op_container_end_page |
22 |
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1790599354800668672 |
spelling |
ftunivbrest:oai:HAL:hal-02324600v1 2024-02-11T10:03:11+01:00 Sources of paralytic shellfish toxin accumulation variability in the Pacific oyster Crassostrea gigas Pousse, Emilien Flye-Sainte-Marie, Jonathan Alunno-Bruscia, Marianne Hegaret, Helene Jean, Frédéric 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) 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) ANR-10-LABX-0019,LabexMER,LabexMER Marine Excellence Research: a changing ocean(2010) 2018-03 https://hal.science/hal-02324600 https://hal.science/hal-02324600/document https://hal.science/hal-02324600/file/Pousse_etal_Toxicon_2018.pdf https://doi.org/10.1016/j.toxicon.2017.12.050 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.toxicon.2017.12.050 hal-02324600 https://hal.science/hal-02324600 https://hal.science/hal-02324600/document https://hal.science/hal-02324600/file/Pousse_etal_Toxicon_2018.pdf doi:10.1016/j.toxicon.2017.12.050 info:eu-repo/semantics/OpenAccess ISSN: 0041-0101 EISSN: 0041-0101 Toxicon https://hal.science/hal-02324600 Toxicon, 2018, 144, pp.14-22. ⟨10.1016/j.toxicon.2017.12.050⟩ Alexandrium minutum Paralytic shellfish poisoning Accumulation Clearance rate Feeding behavior Pacific oyster ACL [SDE]Environmental Sciences [SDE.BE]Environmental Sciences/Biodiversity and Ecology [SDV]Life Sciences [q-bio] [SDV.BA]Life Sciences [q-bio]/Animal biology info:eu-repo/semantics/article Journal articles 2018 ftunivbrest https://doi.org/10.1016/j.toxicon.2017.12.050 2024-01-23T23:39:56Z International audience This study was designed to assess the contribution of feeding behavior to inter-individual variability of paralytic shellfish toxin (PST) accumulation in the Pacific oyster Crassostrea gigas. For this purpose 42 oysters were exposed for 2 days to non-toxic algae and then for 2 other days to the PST producer Alexandrium minutum. Individual clearance rate (CR) of oysters was continuously monitored over the 4 days using an ecophysiological measurement system. Comparison of CR values when exposed to toxic and non toxic algae allowed to estimate a clearance rate inhibition index (CRII). Toxin concentration of oysters was quantified at the end of the experiment. These data allowed to estimate the toxin accumulation efficiency (TAE) as the ratio of toxin accumulated on toxin consumed. Changes of clearance rate during the experiment indicated that all individuals stopped feeding immediately after being exposed to A. minutum for at least 7 h. This fast response likely corresponded to a behavioral mechanism of avoidance rather to a toxin-induced response. Individuals also showed high inter-variability in their recovery of filtration after this period. Most of the inter-individual variability (78%) in PST accumulation in C. gigas could be explained by the consumption of A. minutum cells, thus emphasizing the importance of the feeding behavior in accumulation. Based on the toxin concentration in their tissues, oysters were clustered in 3 groups showing contrasted patterns of PST accumulation: the high accumulation group was characterized by high feeding rates both on non-toxic and toxic diet and subsequently a low CRII and high TAE. Inversely, the low accumulation group was characterized by low filtration rates, high CRII and low TAE. Both filtration capacity and sensitivity of oysters to toxins may account for the differences in their accumulation. The contribution of TAE in PST accumulation is discussed and might result from differences in assimilation and detoxification abilities among ... Article in Journal/Newspaper Crassostrea gigas Pacific oyster Université de Bretagne Occidentale: HAL Pacific Toxicon 144 14 22 |