Comparative Analysis of the Fatty Acid Profiles of Antarctic Krill ( Euphausia superba Dana, 1850) in the Atlantic Sector of the Southern Ocean: Certain Fatty Acids Reflect the Oceanographic and Trophic Conditions of the Habitat
The present study is the attempt to combine oceanologic measurements and biochemical analysis, which is as possible to implement on board as in a laboratory with chosen certain statistics to reveal trophic conditions and the environment state in which Antarctic krill live in season in real time on s...
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MDPI AG
2023
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Online Access: | https://doi.org/10.3390/jmse11101912 https://doaj.org/article/59878965380144eba0f739397d1c63e6 |
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ftdoajarticles:oai:doaj.org/article:59878965380144eba0f739397d1c63e6 2023-11-12T04:08:42+01:00 Comparative Analysis of the Fatty Acid Profiles of Antarctic Krill ( Euphausia superba Dana, 1850) in the Atlantic Sector of the Southern Ocean: Certain Fatty Acids Reflect the Oceanographic and Trophic Conditions of the Habitat Svetlana A. Murzina Viktor P. Voronin Dmitry G. Bitiutskii Aleksej V. Mishin Svetlana N. Khurtina Dmitry I. Frey Alexei M. Orlov 2023-10-01T00:00:00Z https://doi.org/10.3390/jmse11101912 https://doaj.org/article/59878965380144eba0f739397d1c63e6 EN eng MDPI AG https://www.mdpi.com/2077-1312/11/10/1912 https://doaj.org/toc/2077-1312 doi:10.3390/jmse11101912 2077-1312 https://doaj.org/article/59878965380144eba0f739397d1c63e6 Journal of Marine Science and Engineering, Vol 11, Iss 1912, p 1912 (2023) Antarctic krill fatty acids trophic biomarkers ontogeny biochemical adaptations Antarctic Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 article 2023 ftdoajarticles https://doi.org/10.3390/jmse11101912 2023-10-29T00:36:17Z The present study is the attempt to combine oceanologic measurements and biochemical analysis, which is as possible to implement on board as in a laboratory with chosen certain statistics to reveal trophic conditions and the environment state in which Antarctic krill live in season in real time on site. The fatty acid constituents of total lipids in juvenile and mature Antarctic krill sampled from the Bransfield Strait (BS), the Antarctic Sound (AS), and waters at the eastern tip of the Antarctic Peninsula (AP) collected during the 87th cruise of the R/V Akademik Mstislav Keldysh in January–February 2022 were analyzed. The fatty acid (FA) profile in juvenile and mature Antarctic krill was studied by gas chromatography with a mass selective detector to identify the qualitative composition and a flame ionization detector to quantify the studied FAs. Using NMDS analysis (quantitative panel), great difference was found between krill from the BS compared to krill collected in the AS and the AP. The differences are reliable owing to the following 16 FAs, most of them trophic biomarkers of microphytoplankton, and suggest regional differences, mainly in abundance and ability of forage objects. CTD measurements discuss the abiotic factors (potential temperature, salinity, and chlorophyll “a”). Compensatory modifications of the composition of FA components in Antarctic krill inhabiting different water areas are a way of maintaining the species’ viability under certain and variable habitat conditions. Article in Journal/Newspaper Antarc* Antarctic Antarctic Krill Antarctic Peninsula Bransfield Strait Euphausia superba Southern Ocean Directory of Open Access Journals: DOAJ Articles Journal of Marine Science and Engineering 11 10 1912 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
Antarctic krill fatty acids trophic biomarkers ontogeny biochemical adaptations Antarctic Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 |
spellingShingle |
Antarctic krill fatty acids trophic biomarkers ontogeny biochemical adaptations Antarctic Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 Svetlana A. Murzina Viktor P. Voronin Dmitry G. Bitiutskii Aleksej V. Mishin Svetlana N. Khurtina Dmitry I. Frey Alexei M. Orlov Comparative Analysis of the Fatty Acid Profiles of Antarctic Krill ( Euphausia superba Dana, 1850) in the Atlantic Sector of the Southern Ocean: Certain Fatty Acids Reflect the Oceanographic and Trophic Conditions of the Habitat |
topic_facet |
Antarctic krill fatty acids trophic biomarkers ontogeny biochemical adaptations Antarctic Naval architecture. Shipbuilding. Marine engineering VM1-989 Oceanography GC1-1581 |
description |
The present study is the attempt to combine oceanologic measurements and biochemical analysis, which is as possible to implement on board as in a laboratory with chosen certain statistics to reveal trophic conditions and the environment state in which Antarctic krill live in season in real time on site. The fatty acid constituents of total lipids in juvenile and mature Antarctic krill sampled from the Bransfield Strait (BS), the Antarctic Sound (AS), and waters at the eastern tip of the Antarctic Peninsula (AP) collected during the 87th cruise of the R/V Akademik Mstislav Keldysh in January–February 2022 were analyzed. The fatty acid (FA) profile in juvenile and mature Antarctic krill was studied by gas chromatography with a mass selective detector to identify the qualitative composition and a flame ionization detector to quantify the studied FAs. Using NMDS analysis (quantitative panel), great difference was found between krill from the BS compared to krill collected in the AS and the AP. The differences are reliable owing to the following 16 FAs, most of them trophic biomarkers of microphytoplankton, and suggest regional differences, mainly in abundance and ability of forage objects. CTD measurements discuss the abiotic factors (potential temperature, salinity, and chlorophyll “a”). Compensatory modifications of the composition of FA components in Antarctic krill inhabiting different water areas are a way of maintaining the species’ viability under certain and variable habitat conditions. |
format |
Article in Journal/Newspaper |
author |
Svetlana A. Murzina Viktor P. Voronin Dmitry G. Bitiutskii Aleksej V. Mishin Svetlana N. Khurtina Dmitry I. Frey Alexei M. Orlov |
author_facet |
Svetlana A. Murzina Viktor P. Voronin Dmitry G. Bitiutskii Aleksej V. Mishin Svetlana N. Khurtina Dmitry I. Frey Alexei M. Orlov |
author_sort |
Svetlana A. Murzina |
title |
Comparative Analysis of the Fatty Acid Profiles of Antarctic Krill ( Euphausia superba Dana, 1850) in the Atlantic Sector of the Southern Ocean: Certain Fatty Acids Reflect the Oceanographic and Trophic Conditions of the Habitat |
title_short |
Comparative Analysis of the Fatty Acid Profiles of Antarctic Krill ( Euphausia superba Dana, 1850) in the Atlantic Sector of the Southern Ocean: Certain Fatty Acids Reflect the Oceanographic and Trophic Conditions of the Habitat |
title_full |
Comparative Analysis of the Fatty Acid Profiles of Antarctic Krill ( Euphausia superba Dana, 1850) in the Atlantic Sector of the Southern Ocean: Certain Fatty Acids Reflect the Oceanographic and Trophic Conditions of the Habitat |
title_fullStr |
Comparative Analysis of the Fatty Acid Profiles of Antarctic Krill ( Euphausia superba Dana, 1850) in the Atlantic Sector of the Southern Ocean: Certain Fatty Acids Reflect the Oceanographic and Trophic Conditions of the Habitat |
title_full_unstemmed |
Comparative Analysis of the Fatty Acid Profiles of Antarctic Krill ( Euphausia superba Dana, 1850) in the Atlantic Sector of the Southern Ocean: Certain Fatty Acids Reflect the Oceanographic and Trophic Conditions of the Habitat |
title_sort |
comparative analysis of the fatty acid profiles of antarctic krill ( euphausia superba dana, 1850) in the atlantic sector of the southern ocean: certain fatty acids reflect the oceanographic and trophic conditions of the habitat |
publisher |
MDPI AG |
publishDate |
2023 |
url |
https://doi.org/10.3390/jmse11101912 https://doaj.org/article/59878965380144eba0f739397d1c63e6 |
genre |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Bransfield Strait Euphausia superba Southern Ocean |
genre_facet |
Antarc* Antarctic Antarctic Krill Antarctic Peninsula Bransfield Strait Euphausia superba Southern Ocean |
op_source |
Journal of Marine Science and Engineering, Vol 11, Iss 1912, p 1912 (2023) |
op_relation |
https://www.mdpi.com/2077-1312/11/10/1912 https://doaj.org/toc/2077-1312 doi:10.3390/jmse11101912 2077-1312 https://doaj.org/article/59878965380144eba0f739397d1c63e6 |
op_doi |
https://doi.org/10.3390/jmse11101912 |
container_title |
Journal of Marine Science and Engineering |
container_volume |
11 |
container_issue |
10 |
container_start_page |
1912 |
_version_ |
1782328929675116544 |