Lipids at the plant–animal interface: a stable isotope labelling method to evaluate the assimilation of essential fatty acids in the marine copepod Calanus finmarchicus
Abstract Linking production, transfer and subsequent bioavailability of nutritionally significant matter from phytoplankton to higher trophic levels is a fundamental aspect in understanding marine food webs. The plant–animal interface is of interest because of the highly variable transfer between pr...
Published in: | Journal of Plankton Research |
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Format: | Article in Journal/Newspaper |
Language: | English |
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Oxford University Press (OUP)
2019
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Online Access: | http://dx.doi.org/10.1093/plankt/fbz062 http://academic.oup.com/plankt/article-pdf/41/6/909/31804804/fbz062.pdf |
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croxfordunivpr:10.1093/plankt/fbz062 2024-09-09T19:34:57+00:00 Lipids at the plant–animal interface: a stable isotope labelling method to evaluate the assimilation of essential fatty acids in the marine copepod Calanus finmarchicus Helenius, Laura Budge, Suzanne Duerksen, Steven Devred, Emmanuel Johnson, Catherine L Weston Seeding Food Innovation 2019 http://dx.doi.org/10.1093/plankt/fbz062 http://academic.oup.com/plankt/article-pdf/41/6/909/31804804/fbz062.pdf en eng Oxford University Press (OUP) https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model Journal of Plankton Research volume 41, issue 6, page 909-924 ISSN 0142-7873 1464-3774 journal-article 2019 croxfordunivpr https://doi.org/10.1093/plankt/fbz062 2024-06-24T04:25:19Z Abstract Linking production, transfer and subsequent bioavailability of nutritionally significant matter from phytoplankton to higher trophic levels is a fundamental aspect in understanding marine food webs. The plant–animal interface is of interest because of the highly variable transfer between producers and consumers, and the myriad of factors that influence it. Essential fatty acids (EFAs) are dietary nutrients that are necessary for normal function in all consumers, yet it remains unclear how efficiently they are transferred through marine food webs. We introduced a 13C-labelled carbon source to the cryptophyte Rhodomonas salina to quantify primary production of two omega-3 long-chain polyunsaturated fatty acids (PUFAs), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). We investigated transfer and assimilation efficiencies of these EFAs from phytoplankton to the calanoid copepod Calanus finmarchicus in an 8-day feeding experiment. We found low production of both EFAs in R. salina. Assimilation efficiencies of both EFAs ranged from 5 to 15% throughout the experiment, remaining slightly higher on average for DHA. This was mirrored in more efficient trophic transfer of DHA (up to 28%, compared to 13% for EPA). These results add to previously scarce experiments empirically quantifying the assimilation and transfer efficiency of EFAs in a basic marine planktonic food chain. Article in Journal/Newspaper Calanus finmarchicus Oxford University Press Journal of Plankton Research 41 6 909 924 |
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Open Polar |
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Oxford University Press |
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croxfordunivpr |
language |
English |
description |
Abstract Linking production, transfer and subsequent bioavailability of nutritionally significant matter from phytoplankton to higher trophic levels is a fundamental aspect in understanding marine food webs. The plant–animal interface is of interest because of the highly variable transfer between producers and consumers, and the myriad of factors that influence it. Essential fatty acids (EFAs) are dietary nutrients that are necessary for normal function in all consumers, yet it remains unclear how efficiently they are transferred through marine food webs. We introduced a 13C-labelled carbon source to the cryptophyte Rhodomonas salina to quantify primary production of two omega-3 long-chain polyunsaturated fatty acids (PUFAs), eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA). We investigated transfer and assimilation efficiencies of these EFAs from phytoplankton to the calanoid copepod Calanus finmarchicus in an 8-day feeding experiment. We found low production of both EFAs in R. salina. Assimilation efficiencies of both EFAs ranged from 5 to 15% throughout the experiment, remaining slightly higher on average for DHA. This was mirrored in more efficient trophic transfer of DHA (up to 28%, compared to 13% for EPA). These results add to previously scarce experiments empirically quantifying the assimilation and transfer efficiency of EFAs in a basic marine planktonic food chain. |
author2 |
Weston Seeding Food Innovation |
format |
Article in Journal/Newspaper |
author |
Helenius, Laura Budge, Suzanne Duerksen, Steven Devred, Emmanuel Johnson, Catherine L |
spellingShingle |
Helenius, Laura Budge, Suzanne Duerksen, Steven Devred, Emmanuel Johnson, Catherine L Lipids at the plant–animal interface: a stable isotope labelling method to evaluate the assimilation of essential fatty acids in the marine copepod Calanus finmarchicus |
author_facet |
Helenius, Laura Budge, Suzanne Duerksen, Steven Devred, Emmanuel Johnson, Catherine L |
author_sort |
Helenius, Laura |
title |
Lipids at the plant–animal interface: a stable isotope labelling method to evaluate the assimilation of essential fatty acids in the marine copepod Calanus finmarchicus |
title_short |
Lipids at the plant–animal interface: a stable isotope labelling method to evaluate the assimilation of essential fatty acids in the marine copepod Calanus finmarchicus |
title_full |
Lipids at the plant–animal interface: a stable isotope labelling method to evaluate the assimilation of essential fatty acids in the marine copepod Calanus finmarchicus |
title_fullStr |
Lipids at the plant–animal interface: a stable isotope labelling method to evaluate the assimilation of essential fatty acids in the marine copepod Calanus finmarchicus |
title_full_unstemmed |
Lipids at the plant–animal interface: a stable isotope labelling method to evaluate the assimilation of essential fatty acids in the marine copepod Calanus finmarchicus |
title_sort |
lipids at the plant–animal interface: a stable isotope labelling method to evaluate the assimilation of essential fatty acids in the marine copepod calanus finmarchicus |
publisher |
Oxford University Press (OUP) |
publishDate |
2019 |
url |
http://dx.doi.org/10.1093/plankt/fbz062 http://academic.oup.com/plankt/article-pdf/41/6/909/31804804/fbz062.pdf |
genre |
Calanus finmarchicus |
genre_facet |
Calanus finmarchicus |
op_source |
Journal of Plankton Research volume 41, issue 6, page 909-924 ISSN 0142-7873 1464-3774 |
op_rights |
https://academic.oup.com/journals/pages/open_access/funder_policies/chorus/standard_publication_model |
op_doi |
https://doi.org/10.1093/plankt/fbz062 |
container_title |
Journal of Plankton Research |
container_volume |
41 |
container_issue |
6 |
container_start_page |
909 |
op_container_end_page |
924 |
_version_ |
1809904373612937216 |