A deep dive into fat: Investigating blubber lipidomic fingerprint of killer whales and humpback whales in northern Norway
Abstract In cetaceans, blubber is the primary and largest lipid body reservoir. Our current understanding about lipid stores and uses in cetaceans is still limited, and most studies only focused on a single narrow snapshot of the lipidome. We documented an extended lipidomic fingerprint in two cetac...
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Online Access: | http://dx.doi.org/10.1002/ece3.7523 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.7523 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.7523 |
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crwiley:10.1002/ece3.7523 2024-09-15T18:16:44+00:00 A deep dive into fat: Investigating blubber lipidomic fingerprint of killer whales and humpback whales in northern Norway Bories, Pierre Rikardsen, Audun H. Leonards, Pim Fisk, Aaron T. Tartu, Sabrina Vogel, Emma F. Bytingsvik, Jenny Blévin, Pierre 2021 http://dx.doi.org/10.1002/ece3.7523 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.7523 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.7523 en eng Wiley http://creativecommons.org/licenses/by/4.0/ Ecology and Evolution volume 11, issue 11, page 6716-6729 ISSN 2045-7758 2045-7758 journal-article 2021 crwiley https://doi.org/10.1002/ece3.7523 2024-08-22T04:17:20Z Abstract In cetaceans, blubber is the primary and largest lipid body reservoir. Our current understanding about lipid stores and uses in cetaceans is still limited, and most studies only focused on a single narrow snapshot of the lipidome. We documented an extended lipidomic fingerprint in two cetacean species present in northern Norway during wintertime. We were able to detect 817 molecular lipid species in blubber of killer whales ( Orcinus orca ) and humpback whales ( Megaptera novaeangliae ). The profiles were largely dominated by triradylglycerols in both species and, to a lesser extent, by other constituents including glycerophosphocholines, phosphosphingolipids, glycerophosphoethanolamines, and diradylglycerols. Through a unique combination of traditional statistical approaches, together with a novel bioinformatic tool (LION/web), we showed contrasting fingerprint composition between species. The higher content of triradylglycerols in humpback whales is necessary to fuel their upcoming half a year fasting and energy‐demanding migration between feeding and breeding grounds. In adipocytes, we assume that the intense feeding rate of humpback whales prior to migration translates into an important accumulation of triacylglycerol content in lipid droplets. Upstream, the endoplasmic reticulum is operating at full capacity to supply acute lipid storage, consistent with the reported enrichment of glycerophosphocholines in humpback whales, major components of the endoplasmic reticulum. There was also an enrichment of membrane components, which translates into higher sphingolipid content in the lipidome of killer whales, potentially as a structural adaptation for their higher hydrodynamic performance. Finally, the presence of both lipid‐enriched and lipid‐depleted individuals within the killer whale population in Norway suggests dietary specialization, consistent with significant differences in δ 15 N and δ 13 C isotopic ratios in skin between the two groups, with higher values and a wider niche for the ... Article in Journal/Newspaper Killer Whale Megaptera novaeangliae Northern Norway Orca Orcinus orca Killer whale Wiley Online Library Ecology and Evolution 11 11 6716 6729 |
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Wiley Online Library |
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language |
English |
description |
Abstract In cetaceans, blubber is the primary and largest lipid body reservoir. Our current understanding about lipid stores and uses in cetaceans is still limited, and most studies only focused on a single narrow snapshot of the lipidome. We documented an extended lipidomic fingerprint in two cetacean species present in northern Norway during wintertime. We were able to detect 817 molecular lipid species in blubber of killer whales ( Orcinus orca ) and humpback whales ( Megaptera novaeangliae ). The profiles were largely dominated by triradylglycerols in both species and, to a lesser extent, by other constituents including glycerophosphocholines, phosphosphingolipids, glycerophosphoethanolamines, and diradylglycerols. Through a unique combination of traditional statistical approaches, together with a novel bioinformatic tool (LION/web), we showed contrasting fingerprint composition between species. The higher content of triradylglycerols in humpback whales is necessary to fuel their upcoming half a year fasting and energy‐demanding migration between feeding and breeding grounds. In adipocytes, we assume that the intense feeding rate of humpback whales prior to migration translates into an important accumulation of triacylglycerol content in lipid droplets. Upstream, the endoplasmic reticulum is operating at full capacity to supply acute lipid storage, consistent with the reported enrichment of glycerophosphocholines in humpback whales, major components of the endoplasmic reticulum. There was also an enrichment of membrane components, which translates into higher sphingolipid content in the lipidome of killer whales, potentially as a structural adaptation for their higher hydrodynamic performance. Finally, the presence of both lipid‐enriched and lipid‐depleted individuals within the killer whale population in Norway suggests dietary specialization, consistent with significant differences in δ 15 N and δ 13 C isotopic ratios in skin between the two groups, with higher values and a wider niche for the ... |
format |
Article in Journal/Newspaper |
author |
Bories, Pierre Rikardsen, Audun H. Leonards, Pim Fisk, Aaron T. Tartu, Sabrina Vogel, Emma F. Bytingsvik, Jenny Blévin, Pierre |
spellingShingle |
Bories, Pierre Rikardsen, Audun H. Leonards, Pim Fisk, Aaron T. Tartu, Sabrina Vogel, Emma F. Bytingsvik, Jenny Blévin, Pierre A deep dive into fat: Investigating blubber lipidomic fingerprint of killer whales and humpback whales in northern Norway |
author_facet |
Bories, Pierre Rikardsen, Audun H. Leonards, Pim Fisk, Aaron T. Tartu, Sabrina Vogel, Emma F. Bytingsvik, Jenny Blévin, Pierre |
author_sort |
Bories, Pierre |
title |
A deep dive into fat: Investigating blubber lipidomic fingerprint of killer whales and humpback whales in northern Norway |
title_short |
A deep dive into fat: Investigating blubber lipidomic fingerprint of killer whales and humpback whales in northern Norway |
title_full |
A deep dive into fat: Investigating blubber lipidomic fingerprint of killer whales and humpback whales in northern Norway |
title_fullStr |
A deep dive into fat: Investigating blubber lipidomic fingerprint of killer whales and humpback whales in northern Norway |
title_full_unstemmed |
A deep dive into fat: Investigating blubber lipidomic fingerprint of killer whales and humpback whales in northern Norway |
title_sort |
deep dive into fat: investigating blubber lipidomic fingerprint of killer whales and humpback whales in northern norway |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1002/ece3.7523 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ece3.7523 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ece3.7523 |
genre |
Killer Whale Megaptera novaeangliae Northern Norway Orca Orcinus orca Killer whale |
genre_facet |
Killer Whale Megaptera novaeangliae Northern Norway Orca Orcinus orca Killer whale |
op_source |
Ecology and Evolution volume 11, issue 11, page 6716-6729 ISSN 2045-7758 2045-7758 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1002/ece3.7523 |
container_title |
Ecology and Evolution |
container_volume |
11 |
container_issue |
11 |
container_start_page |
6716 |
op_container_end_page |
6729 |
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1810454746193985536 |