Lipids of Antarctic Ocean amphipods: food chain interactions and the occurrence of novel biomarkers
Antarctic hyperiid (Themisto gaudichaudi, Hyperia macrocephalus, and Primno macropa) and gammarid amphipods (Eusirus perdentatus and Orchomene rossi) were collected near Elephant Island, located in the South Shetland Islands, during January and February 1997 and 1998. Polar lipid (PL) was the major...
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Online Access: | https://doi.org/10.1016/S0304-4203(00)00072-4 http://ecite.utas.edu.au/21922 |
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ftunivtasecite:oai:ecite.utas.edu.au:21922 2023-05-15T13:59:07+02:00 Lipids of Antarctic Ocean amphipods: food chain interactions and the occurrence of novel biomarkers Nelson, MM Mooney, BD Nichols, PD Phleger, CF 2001 https://doi.org/10.1016/S0304-4203(00)00072-4 http://ecite.utas.edu.au/21922 en eng Elsevier Science BV http://dx.doi.org/10.1016/S0304-4203(00)00072-4 Nelson, MM and Mooney, BD and Nichols, PD and Phleger, CF, Lipids of Antarctic Ocean amphipods: food chain interactions and the occurrence of novel biomarkers, Marine Chemistry, 73, (1) pp. 53-64. ISSN 0304-4203 (2001) [Refereed Article] http://ecite.utas.edu.au/21922 Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Refereed Article PeerReviewed 2001 ftunivtasecite https://doi.org/10.1016/S0304-4203(00)00072-4 2019-12-13T21:03:55Z Antarctic hyperiid (Themisto gaudichaudi, Hyperia macrocephalus, and Primno macropa) and gammarid amphipods (Eusirus perdentatus and Orchomene rossi) were collected near Elephant Island, located in the South Shetland Islands, during January and February 1997 and 1998. Polar lipid (PL) was the major lipid class in all amphipods (58-88% of total lipid), except for T. gaudichaudi in which triacylglycerol (TAG) was dominant (62%). Cholesterol was the major sterol in the gammarid amphipods (89-91% of total sterols), and the hyperiid P. macropa (70%). The hyperiids T. gaudichaudi and H. macrocephalus had a more diverse sterol composition including trans-dehydrocholesterol, desmosterol, 24-nordehydrocholesterol, 24-methylcholest-5,22E-dien-3-ol, 24-methylenecholesterol, and stanols (mostly cholestanol). Eicosapentaenoic acid [EPA, 20:5(n - 3)] and docosahexaenoic acid [DHA, 22:6(n - 3)] were the major polyunsaturated fatty acids (PUFA) in all amphipods. The PUFA octadecapentaenoic acid [18:5(n - 3)] was not detected in 1997 samples, but comprised 0.3-1.2% in all 1998 samples. The PUFA 18:4(n - 3) comprised 0.2-4.2% in all samples from both years. Very long chain PUFA (VLC-PUFA) (C24 and C26) were not detected in the one 1997 sample but comprised 0.6-2.8% of total fatty acids in almost all 1998 amphipods. Monounsaturated fatty acids included 18:1(n - 9)c, 18:1(n - 7)c, and 16:1(n - 7)c. Principal saturated fatty acids in all amphipods were 16:0, 14:0, and 18:0. Examination of biomarker lipids has helped clarify trophic interactions for these Antarctic amphipods, and revealed annual differences in their food sources. 2001 Elsevier Science B.V. Article in Journal/Newspaper Antarc* Antarctic Antarctic Ocean Elephant Island South Shetland Islands eCite UTAS (University of Tasmania) Antarctic South Shetland Islands Antarctic Ocean Elephant Island ENVELOPE(-55.184,-55.184,-61.085,-61.085) Marine Chemistry 73 1 53 64 |
institution |
Open Polar |
collection |
eCite UTAS (University of Tasmania) |
op_collection_id |
ftunivtasecite |
language |
English |
topic |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) |
spellingShingle |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) Nelson, MM Mooney, BD Nichols, PD Phleger, CF Lipids of Antarctic Ocean amphipods: food chain interactions and the occurrence of novel biomarkers |
topic_facet |
Biological Sciences Ecology Marine and Estuarine Ecology (incl. Marine Ichthyology) |
description |
Antarctic hyperiid (Themisto gaudichaudi, Hyperia macrocephalus, and Primno macropa) and gammarid amphipods (Eusirus perdentatus and Orchomene rossi) were collected near Elephant Island, located in the South Shetland Islands, during January and February 1997 and 1998. Polar lipid (PL) was the major lipid class in all amphipods (58-88% of total lipid), except for T. gaudichaudi in which triacylglycerol (TAG) was dominant (62%). Cholesterol was the major sterol in the gammarid amphipods (89-91% of total sterols), and the hyperiid P. macropa (70%). The hyperiids T. gaudichaudi and H. macrocephalus had a more diverse sterol composition including trans-dehydrocholesterol, desmosterol, 24-nordehydrocholesterol, 24-methylcholest-5,22E-dien-3-ol, 24-methylenecholesterol, and stanols (mostly cholestanol). Eicosapentaenoic acid [EPA, 20:5(n - 3)] and docosahexaenoic acid [DHA, 22:6(n - 3)] were the major polyunsaturated fatty acids (PUFA) in all amphipods. The PUFA octadecapentaenoic acid [18:5(n - 3)] was not detected in 1997 samples, but comprised 0.3-1.2% in all 1998 samples. The PUFA 18:4(n - 3) comprised 0.2-4.2% in all samples from both years. Very long chain PUFA (VLC-PUFA) (C24 and C26) were not detected in the one 1997 sample but comprised 0.6-2.8% of total fatty acids in almost all 1998 amphipods. Monounsaturated fatty acids included 18:1(n - 9)c, 18:1(n - 7)c, and 16:1(n - 7)c. Principal saturated fatty acids in all amphipods were 16:0, 14:0, and 18:0. Examination of biomarker lipids has helped clarify trophic interactions for these Antarctic amphipods, and revealed annual differences in their food sources. 2001 Elsevier Science B.V. |
format |
Article in Journal/Newspaper |
author |
Nelson, MM Mooney, BD Nichols, PD Phleger, CF |
author_facet |
Nelson, MM Mooney, BD Nichols, PD Phleger, CF |
author_sort |
Nelson, MM |
title |
Lipids of Antarctic Ocean amphipods: food chain interactions and the occurrence of novel biomarkers |
title_short |
Lipids of Antarctic Ocean amphipods: food chain interactions and the occurrence of novel biomarkers |
title_full |
Lipids of Antarctic Ocean amphipods: food chain interactions and the occurrence of novel biomarkers |
title_fullStr |
Lipids of Antarctic Ocean amphipods: food chain interactions and the occurrence of novel biomarkers |
title_full_unstemmed |
Lipids of Antarctic Ocean amphipods: food chain interactions and the occurrence of novel biomarkers |
title_sort |
lipids of antarctic ocean amphipods: food chain interactions and the occurrence of novel biomarkers |
publisher |
Elsevier Science BV |
publishDate |
2001 |
url |
https://doi.org/10.1016/S0304-4203(00)00072-4 http://ecite.utas.edu.au/21922 |
long_lat |
ENVELOPE(-55.184,-55.184,-61.085,-61.085) |
geographic |
Antarctic South Shetland Islands Antarctic Ocean Elephant Island |
geographic_facet |
Antarctic South Shetland Islands Antarctic Ocean Elephant Island |
genre |
Antarc* Antarctic Antarctic Ocean Elephant Island South Shetland Islands |
genre_facet |
Antarc* Antarctic Antarctic Ocean Elephant Island South Shetland Islands |
op_relation |
http://dx.doi.org/10.1016/S0304-4203(00)00072-4 Nelson, MM and Mooney, BD and Nichols, PD and Phleger, CF, Lipids of Antarctic Ocean amphipods: food chain interactions and the occurrence of novel biomarkers, Marine Chemistry, 73, (1) pp. 53-64. ISSN 0304-4203 (2001) [Refereed Article] http://ecite.utas.edu.au/21922 |
op_doi |
https://doi.org/10.1016/S0304-4203(00)00072-4 |
container_title |
Marine Chemistry |
container_volume |
73 |
container_issue |
1 |
container_start_page |
53 |
op_container_end_page |
64 |
_version_ |
1766267510785572864 |