Bioenergetics of Euphausia superba and Euphausia crystallorophias in the Ross Sea
Krill species are key organisms in the Antarctic food web. Biochemical composition in terms of lipids, proteins, carbohydrates, and fatty acids and its implications for spatial distribution were investigated in specimens of Euphausia superba and Euphausia crystallorophias collected in the Ross Sea a...
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ftmdpi:oai:mdpi.com:/1424-2818/15/4/480/ 2023-08-20T04:02:28+02:00 Bioenergetics of Euphausia superba and Euphausia crystallorophias in the Ross Sea Andrea De Felice Elena Manini Ilaria Biagiotti Iole Leonori agris 2023-03-24 application/pdf https://doi.org/10.3390/d15040480 EN eng Multidisciplinary Digital Publishing Institute Marine Diversity https://dx.doi.org/10.3390/d15040480 https://creativecommons.org/licenses/by/4.0/ Diversity; Volume 15; Issue 4; Pages: 480 bioenergetics Euphausia superba Euphausia crystallorophias biochemical composition fatty acids Ross Sea Text 2023 ftmdpi https://doi.org/10.3390/d15040480 2023-08-01T09:25:26Z Krill species are key organisms in the Antarctic food web. Biochemical composition in terms of lipids, proteins, carbohydrates, and fatty acids and its implications for spatial distribution were investigated in specimens of Euphausia superba and Euphausia crystallorophias collected in the Ross Sea and the adjacent Pacific region during an acoustic survey carried out within the framework of the 19th Italian National Program for Research in Antarctica (PNRA) Expedition, to gain insights into their trophic relationships and bioenergetic strategies. In both species, the body biochemical composition (wet) showed a predominance of proteins (62–86%), followed by lipids and carbohydrates, and, among identified lipid classes, the two species did not seem to differ much in fatty acid composition. Results showed the highest dissimilarity in biochemical composition between species relative to differences in latitude (24%) and to inshore/offshore haul (22%). Fatty acid analysis, and particularly PUFA/SFA and 18PUFA/16PUFA ratios, allowed identification of a more pronounced omnivorous kind of diet in E. crystallorophias relative to E. superba. Text Antarc* Antarctic Antarctica Euphausia superba Ross Sea MDPI Open Access Publishing Antarctic Pacific Ross Sea The Antarctic Diversity 15 4 480 |
institution |
Open Polar |
collection |
MDPI Open Access Publishing |
op_collection_id |
ftmdpi |
language |
English |
topic |
bioenergetics Euphausia superba Euphausia crystallorophias biochemical composition fatty acids Ross Sea |
spellingShingle |
bioenergetics Euphausia superba Euphausia crystallorophias biochemical composition fatty acids Ross Sea Andrea De Felice Elena Manini Ilaria Biagiotti Iole Leonori Bioenergetics of Euphausia superba and Euphausia crystallorophias in the Ross Sea |
topic_facet |
bioenergetics Euphausia superba Euphausia crystallorophias biochemical composition fatty acids Ross Sea |
description |
Krill species are key organisms in the Antarctic food web. Biochemical composition in terms of lipids, proteins, carbohydrates, and fatty acids and its implications for spatial distribution were investigated in specimens of Euphausia superba and Euphausia crystallorophias collected in the Ross Sea and the adjacent Pacific region during an acoustic survey carried out within the framework of the 19th Italian National Program for Research in Antarctica (PNRA) Expedition, to gain insights into their trophic relationships and bioenergetic strategies. In both species, the body biochemical composition (wet) showed a predominance of proteins (62–86%), followed by lipids and carbohydrates, and, among identified lipid classes, the two species did not seem to differ much in fatty acid composition. Results showed the highest dissimilarity in biochemical composition between species relative to differences in latitude (24%) and to inshore/offshore haul (22%). Fatty acid analysis, and particularly PUFA/SFA and 18PUFA/16PUFA ratios, allowed identification of a more pronounced omnivorous kind of diet in E. crystallorophias relative to E. superba. |
format |
Text |
author |
Andrea De Felice Elena Manini Ilaria Biagiotti Iole Leonori |
author_facet |
Andrea De Felice Elena Manini Ilaria Biagiotti Iole Leonori |
author_sort |
Andrea De Felice |
title |
Bioenergetics of Euphausia superba and Euphausia crystallorophias in the Ross Sea |
title_short |
Bioenergetics of Euphausia superba and Euphausia crystallorophias in the Ross Sea |
title_full |
Bioenergetics of Euphausia superba and Euphausia crystallorophias in the Ross Sea |
title_fullStr |
Bioenergetics of Euphausia superba and Euphausia crystallorophias in the Ross Sea |
title_full_unstemmed |
Bioenergetics of Euphausia superba and Euphausia crystallorophias in the Ross Sea |
title_sort |
bioenergetics of euphausia superba and euphausia crystallorophias in the ross sea |
publisher |
Multidisciplinary Digital Publishing Institute |
publishDate |
2023 |
url |
https://doi.org/10.3390/d15040480 |
op_coverage |
agris |
geographic |
Antarctic Pacific Ross Sea The Antarctic |
geographic_facet |
Antarctic Pacific Ross Sea The Antarctic |
genre |
Antarc* Antarctic Antarctica Euphausia superba Ross Sea |
genre_facet |
Antarc* Antarctic Antarctica Euphausia superba Ross Sea |
op_source |
Diversity; Volume 15; Issue 4; Pages: 480 |
op_relation |
Marine Diversity https://dx.doi.org/10.3390/d15040480 |
op_rights |
https://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.3390/d15040480 |
container_title |
Diversity |
container_volume |
15 |
container_issue |
4 |
container_start_page |
480 |
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1774712920070946816 |