Assessing fatty acid remodelling during embryogenesis in Greenland halibut (Reinhardtius hippoglossoides) exposed to hypoxia
Eggs of Greenland halibut (Reinhardtius hippoglossoides) are subjected to hypoxic conditions in the deep waters of the Estuary and Gulf of St. Lawrence during their development. The aim of this study was to determine whether there was potential remodelling of fatty acids (FA) during embryogenesis in...
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2017
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Online Access: | https://semaphore.uqar.ca/id/eprint/1370/ https://semaphore.uqar.ca/id/eprint/1370/1/Sahar_Mejri_et_al_janvier2017.pdf https://doi.org/10.1007/s00227-016-3037-1 |
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ftunivquebecar:oai:semaphore.uqar.ca:1370 2023-11-05T03:42:17+01:00 Assessing fatty acid remodelling during embryogenesis in Greenland halibut (Reinhardtius hippoglossoides) exposed to hypoxia Mejri, Sahar Tremblay, Réjean Lambert, Yvan Audet, Céline 2017-01 application/pdf https://semaphore.uqar.ca/id/eprint/1370/ https://semaphore.uqar.ca/id/eprint/1370/1/Sahar_Mejri_et_al_janvier2017.pdf https://doi.org/10.1007/s00227-016-3037-1 fr fre https://semaphore.uqar.ca/id/eprint/1370/1/Sahar_Mejri_et_al_janvier2017.pdf Mejri, Sahar, Tremblay, Réjean orcid:0000-0003-2590-8915 , Lambert, Yvan et Audet, Céline orcid:0000-0003-3366-210X (2017). Assessing fatty acid remodelling during embryogenesis in Greenland halibut (Reinhardtius hippoglossoides) exposed to hypoxia. Marine Biology, 164 (1). pp. 1-9. Fletan Groenland Reinhardtius Hippoglossoides Œuf Embryogenese Eclosion Acide Gras Hypoxie Oxygene Dissous Article Évalué par les pairs 2017 ftunivquebecar https://doi.org/10.1007/s00227-016-3037-1 2023-10-07T23:10:37Z Eggs of Greenland halibut (Reinhardtius hippoglossoides) are subjected to hypoxic conditions in the deep waters of the Estuary and Gulf of St. Lawrence during their development. The aim of this study was to determine whether there was potential remodelling of fatty acids (FA) during embryogenesis in eggs exposed to several levels of dissolved oxygen (DO). Fertilized eggs from three females were exposed to four DO levels: severely hypoxic (10 and 20% sat [percent saturation]), moderately hypoxic (35% sat), and normoxic (100% sat). No FA remodelling was observed in eggs submitted to the different DO levels. The most abundant FA in the polar lipid fraction were docosahexaenoic (DHA, 22:6n-3) and eicosapentaenoic (EPA, 20:5n-3) acids (26 and 22%, respectively), the latter being positively correlated with hatching success. Batches with low hatching success were characterized by eggs with decreased levels of polar EPA and DHA at the end of embryogenesis. Whatever the hatching success, the proportion of FA in the neutral lipid fraction was always significantly lower compared to the polar lipid fraction. Oleic acid (18:1n-9; 17%) was the main FA found in this fraction; together with gondoic acid (20:1n-9), they explained most of the variation in hatching success. --Keywords : Dissolve Oxygen Polar Lipid Hatching Success Polar Fraction Neutral Lipid Fraction. Article in Journal/Newspaper Greenland Groenland Université du Québec à Rimouski (UQAR): Sémaphore Marine Biology 164 1 |
institution |
Open Polar |
collection |
Université du Québec à Rimouski (UQAR): Sémaphore |
op_collection_id |
ftunivquebecar |
language |
French |
topic |
Fletan Groenland Reinhardtius Hippoglossoides Œuf Embryogenese Eclosion Acide Gras Hypoxie Oxygene Dissous |
spellingShingle |
Fletan Groenland Reinhardtius Hippoglossoides Œuf Embryogenese Eclosion Acide Gras Hypoxie Oxygene Dissous Mejri, Sahar Tremblay, Réjean Lambert, Yvan Audet, Céline Assessing fatty acid remodelling during embryogenesis in Greenland halibut (Reinhardtius hippoglossoides) exposed to hypoxia |
topic_facet |
Fletan Groenland Reinhardtius Hippoglossoides Œuf Embryogenese Eclosion Acide Gras Hypoxie Oxygene Dissous |
description |
Eggs of Greenland halibut (Reinhardtius hippoglossoides) are subjected to hypoxic conditions in the deep waters of the Estuary and Gulf of St. Lawrence during their development. The aim of this study was to determine whether there was potential remodelling of fatty acids (FA) during embryogenesis in eggs exposed to several levels of dissolved oxygen (DO). Fertilized eggs from three females were exposed to four DO levels: severely hypoxic (10 and 20% sat [percent saturation]), moderately hypoxic (35% sat), and normoxic (100% sat). No FA remodelling was observed in eggs submitted to the different DO levels. The most abundant FA in the polar lipid fraction were docosahexaenoic (DHA, 22:6n-3) and eicosapentaenoic (EPA, 20:5n-3) acids (26 and 22%, respectively), the latter being positively correlated with hatching success. Batches with low hatching success were characterized by eggs with decreased levels of polar EPA and DHA at the end of embryogenesis. Whatever the hatching success, the proportion of FA in the neutral lipid fraction was always significantly lower compared to the polar lipid fraction. Oleic acid (18:1n-9; 17%) was the main FA found in this fraction; together with gondoic acid (20:1n-9), they explained most of the variation in hatching success. --Keywords : Dissolve Oxygen Polar Lipid Hatching Success Polar Fraction Neutral Lipid Fraction. |
format |
Article in Journal/Newspaper |
author |
Mejri, Sahar Tremblay, Réjean Lambert, Yvan Audet, Céline |
author_facet |
Mejri, Sahar Tremblay, Réjean Lambert, Yvan Audet, Céline |
author_sort |
Mejri, Sahar |
title |
Assessing fatty acid remodelling during embryogenesis in Greenland halibut (Reinhardtius hippoglossoides) exposed to hypoxia |
title_short |
Assessing fatty acid remodelling during embryogenesis in Greenland halibut (Reinhardtius hippoglossoides) exposed to hypoxia |
title_full |
Assessing fatty acid remodelling during embryogenesis in Greenland halibut (Reinhardtius hippoglossoides) exposed to hypoxia |
title_fullStr |
Assessing fatty acid remodelling during embryogenesis in Greenland halibut (Reinhardtius hippoglossoides) exposed to hypoxia |
title_full_unstemmed |
Assessing fatty acid remodelling during embryogenesis in Greenland halibut (Reinhardtius hippoglossoides) exposed to hypoxia |
title_sort |
assessing fatty acid remodelling during embryogenesis in greenland halibut (reinhardtius hippoglossoides) exposed to hypoxia |
publishDate |
2017 |
url |
https://semaphore.uqar.ca/id/eprint/1370/ https://semaphore.uqar.ca/id/eprint/1370/1/Sahar_Mejri_et_al_janvier2017.pdf https://doi.org/10.1007/s00227-016-3037-1 |
genre |
Greenland Groenland |
genre_facet |
Greenland Groenland |
op_relation |
https://semaphore.uqar.ca/id/eprint/1370/1/Sahar_Mejri_et_al_janvier2017.pdf Mejri, Sahar, Tremblay, Réjean orcid:0000-0003-2590-8915 , Lambert, Yvan et Audet, Céline orcid:0000-0003-3366-210X (2017). Assessing fatty acid remodelling during embryogenesis in Greenland halibut (Reinhardtius hippoglossoides) exposed to hypoxia. Marine Biology, 164 (1). pp. 1-9. |
op_doi |
https://doi.org/10.1007/s00227-016-3037-1 |
container_title |
Marine Biology |
container_volume |
164 |
container_issue |
1 |
_version_ |
1781699293472620544 |