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Regional diet in Antarctic krill (Euphausia superba) as determined by lipid, fatty acid, and sterol composition

Hellessey, N, Ericson, JA, Nichols, PD, Kawaguchi, S, Nicol, S, Hoem, N and Virtue, P ORCID: 0000-0002-9870-1256 2022 , 'Regional diet in Antarctic krill (Euphausia superba) as determined by lipid, fatty acid, and sterol composition' , Polar Biology, vol. 45, no. 6 , pp. 1077-1092 , doi: 10.1007/s00300-022-03054-z.

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Abstract

Antarctic krill (Euphausia superba) are a circumpolar species with an omnivorous diet. Knowledge of krill diet within different regions will help predict how environmental change may impact local krill populations. Krill from the Atlantic, Indian, and Pacific sectors of the Southern Ocean were compared. The total lipid, lipid class, neutral lipid fraction fatty acid and sterol content and composition of whole krill, their digestive glands, and stomachs during the late-summer were examined. Indian sector krill had a distinctly different dietary lipid pattern to Atlantic and Pacific sector krill based on their fatty acid profiles (p

Item Type: Article
Authors/Creators:Hellessey, N and Ericson, JA and Nichols, PD and Kawaguchi, S and Nicol, S and Hoem, N and Virtue, P
Keywords: dietary analysis, ocean basins, carnivory, triacylglycerol, phospholipid, Southern ocean
Journal or Publication Title: Polar Biology
Publisher: Springer-Verlag
ISSN: 0722-4060
DOI / ID Number: 10.1007/s00300-022-03054-z
Copyright Information:

© The Author(s), under exclusive licence to Springer-Verlag GmbH Germany, part of Springer Nature 2022.

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