Exposure to the paralytic shellfish toxin producer Alexandrium catenella increases the susceptibility of the oyster Crassostrea gigas to pathogenic vibrios.
International audience The multifactorial etiology of massive Crassostrea gigas summer mortalities results from complex interactions between oysters, opportunistic pathogens and environmental factors. In a field survey conducted in 2014 in the Mediterranean Thau Lagoon (France), we evidenced that th...
Published in: | Toxins |
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ftunivperpignan:oai:HAL:hal-01311082v1 2024-04-28T08:16:24+00:00 Exposure to the paralytic shellfish toxin producer Alexandrium catenella increases the susceptibility of the oyster Crassostrea gigas to pathogenic vibrios. Abi-Khalil, Célina Lopez-Joven, Carmen Abadie, Eric Savar, Véronique Amzil, Zouher Laabir, Mohamed Rolland, Jean-Luc Interactions Hôtes-Pathogènes-Environnements (IHPE) Université de Perpignan Via Domitia (UPVD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM) MARine Biodiversity Exploitation and Conservation (UMR MARBEC) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS) Laboratoire Phycotoxines (PHYC) Unité Dynamiques des Écosystèmes Côtiers (DYNECO) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) 2016 https://sde.hal.science/hal-01311082 https://sde.hal.science/hal-01311082/document https://sde.hal.science/hal-01311082/file/Abi-Khalil-2016-Toxin-Exposure.pdf https://doi.org/10.3390/toxins8010024 en eng HAL CCSD MDPI info:eu-repo/semantics/altIdentifier/doi/10.3390/toxins8010024 hal-01311082 https://sde.hal.science/hal-01311082 https://sde.hal.science/hal-01311082/document https://sde.hal.science/hal-01311082/file/Abi-Khalil-2016-Toxin-Exposure.pdf doi:10.3390/toxins8010024 info:eu-repo/semantics/OpenAccess EISSN: 2072-6651 Toxins https://sde.hal.science/hal-01311082 Toxins, 2016, 8 (1), pp.24. ⟨10.3390/toxins8010024⟩ http://www.mdpi.com/2072-6651/8/1/24 defense environment harmful algae interaction paralytic shellfish toxin pathogens [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2016 ftunivperpignan https://doi.org/10.3390/toxins8010024 2024-04-04T16:59:01Z International audience The multifactorial etiology of massive Crassostrea gigas summer mortalities results from complex interactions between oysters, opportunistic pathogens and environmental factors. In a field survey conducted in 2014 in the Mediterranean Thau Lagoon (France), we evidenced that the development of the toxic dinoflagellate Alexandrium catenella, which produces paralytic shellfish toxins (PSTs), was concomitant with the accumulation of PSTs in oyster flesh and the occurrence of C. gigas mortalities. In order to investigate the possible role of toxic algae in this complex disease, we experimentally infected C. gigas oyster juveniles with Vibrio tasmaniensis strain LGP32, a strain associated with oyster summer mortalities, after oysters were exposed to Alexandrium catenella. Exposure of oysters to A. catenella significantly increased the susceptibility of oysters to V. tasmaniensis LGP32. On the contrary, exposure to the non-toxic dinoflagellate Alexandrium tamarense or to the haptophyte Tisochrysis lutea used as a foraging alga did not increase susceptibility to V. tasmaniensis LGP32. This study shows for the first time that A. catenella increases the susceptibility of Crassostrea gigas to pathogenic vibrios. Therefore, in addition to complex environmental factors explaining the mass mortalities of bivalve mollusks, feeding on neurotoxic dinoflagellates should now be considered as an environmental factor that potentially increases the severity of oyster mortality events. Article in Journal/Newspaper Crassostrea gigas Université de Perpignan: HAL Toxins 8 1 24 |
institution |
Open Polar |
collection |
Université de Perpignan: HAL |
op_collection_id |
ftunivperpignan |
language |
English |
topic |
defense environment harmful algae interaction paralytic shellfish toxin pathogens [SDE]Environmental Sciences |
spellingShingle |
defense environment harmful algae interaction paralytic shellfish toxin pathogens [SDE]Environmental Sciences Abi-Khalil, Célina Lopez-Joven, Carmen Abadie, Eric Savar, Véronique Amzil, Zouher Laabir, Mohamed Rolland, Jean-Luc Exposure to the paralytic shellfish toxin producer Alexandrium catenella increases the susceptibility of the oyster Crassostrea gigas to pathogenic vibrios. |
topic_facet |
defense environment harmful algae interaction paralytic shellfish toxin pathogens [SDE]Environmental Sciences |
description |
International audience The multifactorial etiology of massive Crassostrea gigas summer mortalities results from complex interactions between oysters, opportunistic pathogens and environmental factors. In a field survey conducted in 2014 in the Mediterranean Thau Lagoon (France), we evidenced that the development of the toxic dinoflagellate Alexandrium catenella, which produces paralytic shellfish toxins (PSTs), was concomitant with the accumulation of PSTs in oyster flesh and the occurrence of C. gigas mortalities. In order to investigate the possible role of toxic algae in this complex disease, we experimentally infected C. gigas oyster juveniles with Vibrio tasmaniensis strain LGP32, a strain associated with oyster summer mortalities, after oysters were exposed to Alexandrium catenella. Exposure of oysters to A. catenella significantly increased the susceptibility of oysters to V. tasmaniensis LGP32. On the contrary, exposure to the non-toxic dinoflagellate Alexandrium tamarense or to the haptophyte Tisochrysis lutea used as a foraging alga did not increase susceptibility to V. tasmaniensis LGP32. This study shows for the first time that A. catenella increases the susceptibility of Crassostrea gigas to pathogenic vibrios. Therefore, in addition to complex environmental factors explaining the mass mortalities of bivalve mollusks, feeding on neurotoxic dinoflagellates should now be considered as an environmental factor that potentially increases the severity of oyster mortality events. |
author2 |
Interactions Hôtes-Pathogènes-Environnements (IHPE) Université de Perpignan Via Domitia (UPVD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Centre National de la Recherche Scientifique (CNRS)-Université de Montpellier (UM) MARine Biodiversity Exploitation and Conservation (UMR MARBEC) Institut de Recherche pour le Développement (IRD)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Université de Montpellier (UM)-Centre National de la Recherche Scientifique (CNRS) Laboratoire Phycotoxines (PHYC) Unité Dynamiques des Écosystèmes Côtiers (DYNECO) Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER)-Institut Français de Recherche pour l'Exploitation de la Mer (IFREMER) |
format |
Article in Journal/Newspaper |
author |
Abi-Khalil, Célina Lopez-Joven, Carmen Abadie, Eric Savar, Véronique Amzil, Zouher Laabir, Mohamed Rolland, Jean-Luc |
author_facet |
Abi-Khalil, Célina Lopez-Joven, Carmen Abadie, Eric Savar, Véronique Amzil, Zouher Laabir, Mohamed Rolland, Jean-Luc |
author_sort |
Abi-Khalil, Célina |
title |
Exposure to the paralytic shellfish toxin producer Alexandrium catenella increases the susceptibility of the oyster Crassostrea gigas to pathogenic vibrios. |
title_short |
Exposure to the paralytic shellfish toxin producer Alexandrium catenella increases the susceptibility of the oyster Crassostrea gigas to pathogenic vibrios. |
title_full |
Exposure to the paralytic shellfish toxin producer Alexandrium catenella increases the susceptibility of the oyster Crassostrea gigas to pathogenic vibrios. |
title_fullStr |
Exposure to the paralytic shellfish toxin producer Alexandrium catenella increases the susceptibility of the oyster Crassostrea gigas to pathogenic vibrios. |
title_full_unstemmed |
Exposure to the paralytic shellfish toxin producer Alexandrium catenella increases the susceptibility of the oyster Crassostrea gigas to pathogenic vibrios. |
title_sort |
exposure to the paralytic shellfish toxin producer alexandrium catenella increases the susceptibility of the oyster crassostrea gigas to pathogenic vibrios. |
publisher |
HAL CCSD |
publishDate |
2016 |
url |
https://sde.hal.science/hal-01311082 https://sde.hal.science/hal-01311082/document https://sde.hal.science/hal-01311082/file/Abi-Khalil-2016-Toxin-Exposure.pdf https://doi.org/10.3390/toxins8010024 |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_source |
EISSN: 2072-6651 Toxins https://sde.hal.science/hal-01311082 Toxins, 2016, 8 (1), pp.24. ⟨10.3390/toxins8010024⟩ http://www.mdpi.com/2072-6651/8/1/24 |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.3390/toxins8010024 hal-01311082 https://sde.hal.science/hal-01311082 https://sde.hal.science/hal-01311082/document https://sde.hal.science/hal-01311082/file/Abi-Khalil-2016-Toxin-Exposure.pdf doi:10.3390/toxins8010024 |
op_rights |
info:eu-repo/semantics/OpenAccess |
op_doi |
https://doi.org/10.3390/toxins8010024 |
container_title |
Toxins |
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24 |
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