Lipid Classes and Fatty Acids in Ophryotrocha cyclops, a Dorvilleid from Newfoundland Aquaculture Sites.
A new opportunistic annelid (Ophryotrocha cyclops) discovered on benthic substrates underneath finfish aquaculture sites in Newfoundland (NL) may be involved in the remediation of organic wastes. At those aquaculture sites, bacterial mats and O. cyclops often coexist and are used as indicators of or...
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ftdoajarticles:oai:doaj.org/article:6f1b2825511f46718ec0f08041f8e3c1 2023-05-15T17:22:04+02:00 Lipid Classes and Fatty Acids in Ophryotrocha cyclops, a Dorvilleid from Newfoundland Aquaculture Sites. Flora Salvo Suzanne C Dufour Dounia Hamoutene Christopher C Parrish 2015-01-01T00:00:00Z https://doi.org/10.1371/journal.pone.0136772 https://doaj.org/article/6f1b2825511f46718ec0f08041f8e3c1 EN eng Public Library of Science (PLoS) http://europepmc.org/articles/PMC4550312?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0136772 https://doaj.org/article/6f1b2825511f46718ec0f08041f8e3c1 PLoS ONE, Vol 10, Iss 8, p e0136772 (2015) Medicine R Science Q article 2015 ftdoajarticles https://doi.org/10.1371/journal.pone.0136772 2022-12-31T02:44:20Z A new opportunistic annelid (Ophryotrocha cyclops) discovered on benthic substrates underneath finfish aquaculture sites in Newfoundland (NL) may be involved in the remediation of organic wastes. At those aquaculture sites, bacterial mats and O. cyclops often coexist and are used as indicators of organic enrichment. Little is known on the trophic strategies used by these annelids, including whether they might consume bacteria or other aquaculture-derived wastes. We studied the lipid and fatty acid composition of the annelids and their potential food sources (degraded flocculent organic matter, fresh fish pellets and bacterial mats) to investigate feeding relationships in these habitats and compared the lipid and fatty acid composition of annelids before and after starvation. Fish pellets were rich in lipids, mainly terrestrially derived C18 fatty acids (18:1ω9, 18:2ω6, 18:3ω3), while bacterial samples were mainly composed of ω7 fatty acids, and flocculent matter appeared to be a mixture of fresh and degrading fish pellets, feces and bacteria. Ophryotrocha cyclops did not appear to store excessive amounts of lipids (13%) but showed a high concentration of ω3 and ω6 fatty acids, as well as a high proportion of the main fatty acids contained in fresh fish pellets and bacterial mats. The dorvilleids and all potential food sources differed significantly in their lipid and fatty acid composition. Interestingly, while all food sources contained low proportions of 20:5ω3 and 20:2ω6, the annelids showed high concentrations of these two fatty acids, along with 20:4ω6. A starvation period of 13 days did not result in a major decrease in total lipid content; however, microscopic observations revealed that very few visible lipid droplets remained in the gut epithelium after three months of starvation. Ophryotrocha cyclops appears well adapted to extreme environments and may rely on lipid-rich organic matter for survival and dispersal in cold environments. Article in Journal/Newspaper Newfoundland Directory of Open Access Journals: DOAJ Articles PLOS ONE 10 8 e0136772 |
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topic |
Medicine R Science Q |
spellingShingle |
Medicine R Science Q Flora Salvo Suzanne C Dufour Dounia Hamoutene Christopher C Parrish Lipid Classes and Fatty Acids in Ophryotrocha cyclops, a Dorvilleid from Newfoundland Aquaculture Sites. |
topic_facet |
Medicine R Science Q |
description |
A new opportunistic annelid (Ophryotrocha cyclops) discovered on benthic substrates underneath finfish aquaculture sites in Newfoundland (NL) may be involved in the remediation of organic wastes. At those aquaculture sites, bacterial mats and O. cyclops often coexist and are used as indicators of organic enrichment. Little is known on the trophic strategies used by these annelids, including whether they might consume bacteria or other aquaculture-derived wastes. We studied the lipid and fatty acid composition of the annelids and their potential food sources (degraded flocculent organic matter, fresh fish pellets and bacterial mats) to investigate feeding relationships in these habitats and compared the lipid and fatty acid composition of annelids before and after starvation. Fish pellets were rich in lipids, mainly terrestrially derived C18 fatty acids (18:1ω9, 18:2ω6, 18:3ω3), while bacterial samples were mainly composed of ω7 fatty acids, and flocculent matter appeared to be a mixture of fresh and degrading fish pellets, feces and bacteria. Ophryotrocha cyclops did not appear to store excessive amounts of lipids (13%) but showed a high concentration of ω3 and ω6 fatty acids, as well as a high proportion of the main fatty acids contained in fresh fish pellets and bacterial mats. The dorvilleids and all potential food sources differed significantly in their lipid and fatty acid composition. Interestingly, while all food sources contained low proportions of 20:5ω3 and 20:2ω6, the annelids showed high concentrations of these two fatty acids, along with 20:4ω6. A starvation period of 13 days did not result in a major decrease in total lipid content; however, microscopic observations revealed that very few visible lipid droplets remained in the gut epithelium after three months of starvation. Ophryotrocha cyclops appears well adapted to extreme environments and may rely on lipid-rich organic matter for survival and dispersal in cold environments. |
format |
Article in Journal/Newspaper |
author |
Flora Salvo Suzanne C Dufour Dounia Hamoutene Christopher C Parrish |
author_facet |
Flora Salvo Suzanne C Dufour Dounia Hamoutene Christopher C Parrish |
author_sort |
Flora Salvo |
title |
Lipid Classes and Fatty Acids in Ophryotrocha cyclops, a Dorvilleid from Newfoundland Aquaculture Sites. |
title_short |
Lipid Classes and Fatty Acids in Ophryotrocha cyclops, a Dorvilleid from Newfoundland Aquaculture Sites. |
title_full |
Lipid Classes and Fatty Acids in Ophryotrocha cyclops, a Dorvilleid from Newfoundland Aquaculture Sites. |
title_fullStr |
Lipid Classes and Fatty Acids in Ophryotrocha cyclops, a Dorvilleid from Newfoundland Aquaculture Sites. |
title_full_unstemmed |
Lipid Classes and Fatty Acids in Ophryotrocha cyclops, a Dorvilleid from Newfoundland Aquaculture Sites. |
title_sort |
lipid classes and fatty acids in ophryotrocha cyclops, a dorvilleid from newfoundland aquaculture sites. |
publisher |
Public Library of Science (PLoS) |
publishDate |
2015 |
url |
https://doi.org/10.1371/journal.pone.0136772 https://doaj.org/article/6f1b2825511f46718ec0f08041f8e3c1 |
genre |
Newfoundland |
genre_facet |
Newfoundland |
op_source |
PLoS ONE, Vol 10, Iss 8, p e0136772 (2015) |
op_relation |
http://europepmc.org/articles/PMC4550312?pdf=render https://doaj.org/toc/1932-6203 1932-6203 doi:10.1371/journal.pone.0136772 https://doaj.org/article/6f1b2825511f46718ec0f08041f8e3c1 |
op_doi |
https://doi.org/10.1371/journal.pone.0136772 |
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PLOS ONE |
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10 |
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8 |
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e0136772 |
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