Exposure to the Paralytic Shellfish Toxin Producer Alexandrium catenella Increases the Susceptibility of the Oyster Crassostrea gigas to Pathogenic Vibrios
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 to...
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ftmdpi:oai:mdpi.com:/2072-6651/8/1/24/ 2023-08-20T04:06:01+02:00 Exposure to the Paralytic Shellfish Toxin Producer Alexandrium catenella Increases the Susceptibility of the Oyster Crassostrea gigas to Pathogenic Vibrios Celina Abi-Khalil Carmen Lopez-Joven Eric Abadie Veronique Savar Zouher Amzil Mohamed Laabir Jean-Luc Rolland agris 2016-01-15 application/pdf https://doi.org/10.3390/toxins8010024 EN eng Multidisciplinary Digital Publishing Institute Marine and Freshwater Toxins https://dx.doi.org/10.3390/toxins8010024 https://creativecommons.org/licenses/by/4.0/ Toxins; Volume 8; Issue 1; Pages: 24 harmful algae environment interaction pathogens defense paralytic shellfish toxin Text 2016 ftmdpi https://doi.org/10.3390/toxins8010024 2023-07-31T20:49:35Z 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. Text Crassostrea gigas MDPI Open Access Publishing Toxins 8 1 24 |
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MDPI Open Access Publishing |
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ftmdpi |
language |
English |
topic |
harmful algae environment interaction pathogens defense paralytic shellfish toxin |
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harmful algae environment interaction pathogens defense paralytic shellfish toxin Celina Abi-Khalil Carmen Lopez-Joven Eric Abadie Veronique Savar Zouher Amzil Mohamed Laabir Jean-Luc Rolland Exposure to the Paralytic Shellfish Toxin Producer Alexandrium catenella Increases the Susceptibility of the Oyster Crassostrea gigas to Pathogenic Vibrios |
topic_facet |
harmful algae environment interaction pathogens defense paralytic shellfish toxin |
description |
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. |
format |
Text |
author |
Celina Abi-Khalil Carmen Lopez-Joven Eric Abadie Veronique Savar Zouher Amzil Mohamed Laabir Jean-Luc Rolland |
author_facet |
Celina Abi-Khalil Carmen Lopez-Joven Eric Abadie Veronique Savar Zouher Amzil Mohamed Laabir Jean-Luc Rolland |
author_sort |
Celina Abi-Khalil |
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 |
Multidisciplinary Digital Publishing Institute |
publishDate |
2016 |
url |
https://doi.org/10.3390/toxins8010024 |
op_coverage |
agris |
genre |
Crassostrea gigas |
genre_facet |
Crassostrea gigas |
op_source |
Toxins; Volume 8; Issue 1; Pages: 24 |
op_relation |
Marine and Freshwater Toxins https://dx.doi.org/10.3390/toxins8010024 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/toxins8010024 |
container_title |
Toxins |
container_volume |
8 |
container_issue |
1 |
container_start_page |
24 |
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1774716921764118528 |