Influence of gametogenesis pattern and sex on paralytic shellfish toxin levels in triploid Pacific oyster Crassostrea gigas exposed to a natural bloom of Alexandrium minutum
This study investigated the effect of gametogenesis pattern and sex on levels of paralytic shellfish toxins (PST) accumulated by triploid oysters Crassostrea gigas exposed to a natural bloom of the toxic dinoflagellate Alexandrium minutum in the Bay of Brest (Western Brittany, France), over the summ...
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Online Access: | https://doi.org/10.1016/j.aquaculture.2016.01.001 https://archimer.ifremer.fr/doc/00307/41801/41010.pdf https://archimer.ifremer.fr/doc/00307/41801/ |
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fttriple:oai:gotriple.eu:10670/1.7lbv4t 2023-05-15T15:58:29+02:00 Influence of gametogenesis pattern and sex on paralytic shellfish toxin levels in triploid Pacific oyster Crassostrea gigas exposed to a natural bloom of Alexandrium minutum Hermabessiere, Ludovic Fabioux, C. Lassudrie, Malwenn Boullot, F. Long, Marc Lambert, Christophe Le Goic, N. Gouriou, Jeremie Le Gac, Mickael Chapelle, Annie Soudant, P. Hegaret, Helene https://doi.org/10.1016/j.aquaculture.2016.01.001 https://archimer.ifremer.fr/doc/00307/41801/41010.pdf https://archimer.ifremer.fr/doc/00307/41801/ en eng Elsevier Science Bv doi:10.1016/j.aquaculture.2016.01.001 10670/1.7lbv4t https://archimer.ifremer.fr/doc/00307/41801/41010.pdf https://archimer.ifremer.fr/doc/00307/41801/ other Archimer, archive institutionnelle de l'Ifremer Aquaculture (0044-8486) (Elsevier Science Bv), 2016-03 , Vol. 455 , P. 118-124 hist envir Text https://vocabularies.coar-repositories.org/resource_types/c_18cf/ fttriple https://doi.org/10.1016/j.aquaculture.2016.01.001 2023-01-22T18:52:56Z This study investigated the effect of gametogenesis pattern and sex on levels of paralytic shellfish toxins (PST) accumulated by triploid oysters Crassostrea gigas exposed to a natural bloom of the toxic dinoflagellate Alexandrium minutum in the Bay of Brest (Western Brittany, France), over the summer 2014. Toxin accumulation in oysters was proposed to be influenced by the proportion of energy allocated to reproduction versus other metabolisms, as proposed by Haberkorn et al. (2010). Thus, we hypothesized that triploid oysters with different gametogenesis patterns (α or β, producing respectively numerous gametes or rare gametes) could result in differences in toxin accumulation. Toxin level could also be different according to the gender of the oysters. To test these hypotheses, PST levels were measured in the digestive gland of oysters using an ELISA method. Sex, gametogenesis stage and pattern (α or β) of the triploid oysters were determined by histology. Males (24%), females (38%) and hermaphrodites (38%), including synchronous or successive hermaphrodites were represented among the sampled oysters. All of them were at mature stage (III) of gametogenesis. Both α (46%) and β (54%) patterns were represented in the sample set. In these oysters, PST levels appeared independent from sex and gametogenesis pattern. These results suggest that, in triploid oysters, PST accumulation is not influenced by energy allocated to reproduction. Statement of relevance This study appears to be the first to investigate toxin levels depending on gametogenesis pattern in triploid oysters. This study highlighted that triploid oysters were divided into two classes, α (triploid oysters that maturate with unlocked germ cells and have a consequent number of gametes) and β (triploid oysters that display strongly reduced number of gametes and locked gonial mitosis), with the latter class subdivided into two categories: β1, which presents no germinal cell lineage, and β2, which presents germinal cell lineage. This study showed that toxin ... Text Crassostrea gigas Pacific oyster Unknown Pacific Aquaculture 455 118 124 |
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hist envir Hermabessiere, Ludovic Fabioux, C. Lassudrie, Malwenn Boullot, F. Long, Marc Lambert, Christophe Le Goic, N. Gouriou, Jeremie Le Gac, Mickael Chapelle, Annie Soudant, P. Hegaret, Helene Influence of gametogenesis pattern and sex on paralytic shellfish toxin levels in triploid Pacific oyster Crassostrea gigas exposed to a natural bloom of Alexandrium minutum |
topic_facet |
hist envir |
description |
This study investigated the effect of gametogenesis pattern and sex on levels of paralytic shellfish toxins (PST) accumulated by triploid oysters Crassostrea gigas exposed to a natural bloom of the toxic dinoflagellate Alexandrium minutum in the Bay of Brest (Western Brittany, France), over the summer 2014. Toxin accumulation in oysters was proposed to be influenced by the proportion of energy allocated to reproduction versus other metabolisms, as proposed by Haberkorn et al. (2010). Thus, we hypothesized that triploid oysters with different gametogenesis patterns (α or β, producing respectively numerous gametes or rare gametes) could result in differences in toxin accumulation. Toxin level could also be different according to the gender of the oysters. To test these hypotheses, PST levels were measured in the digestive gland of oysters using an ELISA method. Sex, gametogenesis stage and pattern (α or β) of the triploid oysters were determined by histology. Males (24%), females (38%) and hermaphrodites (38%), including synchronous or successive hermaphrodites were represented among the sampled oysters. All of them were at mature stage (III) of gametogenesis. Both α (46%) and β (54%) patterns were represented in the sample set. In these oysters, PST levels appeared independent from sex and gametogenesis pattern. These results suggest that, in triploid oysters, PST accumulation is not influenced by energy allocated to reproduction. Statement of relevance This study appears to be the first to investigate toxin levels depending on gametogenesis pattern in triploid oysters. This study highlighted that triploid oysters were divided into two classes, α (triploid oysters that maturate with unlocked germ cells and have a consequent number of gametes) and β (triploid oysters that display strongly reduced number of gametes and locked gonial mitosis), with the latter class subdivided into two categories: β1, which presents no germinal cell lineage, and β2, which presents germinal cell lineage. This study showed that toxin ... |
format |
Text |
author |
Hermabessiere, Ludovic Fabioux, C. Lassudrie, Malwenn Boullot, F. Long, Marc Lambert, Christophe Le Goic, N. Gouriou, Jeremie Le Gac, Mickael Chapelle, Annie Soudant, P. Hegaret, Helene |
author_facet |
Hermabessiere, Ludovic Fabioux, C. Lassudrie, Malwenn Boullot, F. Long, Marc Lambert, Christophe Le Goic, N. Gouriou, Jeremie Le Gac, Mickael Chapelle, Annie Soudant, P. Hegaret, Helene |
author_sort |
Hermabessiere, Ludovic |
title |
Influence of gametogenesis pattern and sex on paralytic shellfish toxin levels in triploid Pacific oyster Crassostrea gigas exposed to a natural bloom of Alexandrium minutum |
title_short |
Influence of gametogenesis pattern and sex on paralytic shellfish toxin levels in triploid Pacific oyster Crassostrea gigas exposed to a natural bloom of Alexandrium minutum |
title_full |
Influence of gametogenesis pattern and sex on paralytic shellfish toxin levels in triploid Pacific oyster Crassostrea gigas exposed to a natural bloom of Alexandrium minutum |
title_fullStr |
Influence of gametogenesis pattern and sex on paralytic shellfish toxin levels in triploid Pacific oyster Crassostrea gigas exposed to a natural bloom of Alexandrium minutum |
title_full_unstemmed |
Influence of gametogenesis pattern and sex on paralytic shellfish toxin levels in triploid Pacific oyster Crassostrea gigas exposed to a natural bloom of Alexandrium minutum |
title_sort |
influence of gametogenesis pattern and sex on paralytic shellfish toxin levels in triploid pacific oyster crassostrea gigas exposed to a natural bloom of alexandrium minutum |
publisher |
Elsevier Science Bv |
url |
https://doi.org/10.1016/j.aquaculture.2016.01.001 https://archimer.ifremer.fr/doc/00307/41801/41010.pdf https://archimer.ifremer.fr/doc/00307/41801/ |
geographic |
Pacific |
geographic_facet |
Pacific |
genre |
Crassostrea gigas Pacific oyster |
genre_facet |
Crassostrea gigas Pacific oyster |
op_source |
Archimer, archive institutionnelle de l'Ifremer Aquaculture (0044-8486) (Elsevier Science Bv), 2016-03 , Vol. 455 , P. 118-124 |
op_relation |
doi:10.1016/j.aquaculture.2016.01.001 10670/1.7lbv4t https://archimer.ifremer.fr/doc/00307/41801/41010.pdf https://archimer.ifremer.fr/doc/00307/41801/ |
op_rights |
other |
op_doi |
https://doi.org/10.1016/j.aquaculture.2016.01.001 |
container_title |
Aquaculture |
container_volume |
455 |
container_start_page |
118 |
op_container_end_page |
124 |
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1766394227707609088 |