Intact phospholipid and fatty acid compositions in the digestive system of Antarctic krill, Euphausia superba, sampled in January, March and May


This dataset contains the seasonal composition of intact phospholipids as well as of free fatty acids from the digestive system of Antarctic krill, Euphausia superba. Krill was caught with a continuous krill pumping system in May of 2021 in the Bransfield Strait and in January and March of 2022 at the South Orkney Islands. The stomach, digestive gland and hind gut were dissected and analysed individually. Samples were extracted with an optimized Bligh&Dyer protocol. Intact phospholipids were measured with liquid chromatography - high-resolution mass spectrometry on an Orbitrap mass spectrometer. Identification of intact phospholipids was based on characteristic fragments of the head group in MS2 experiments in positive electrospray ionization mode, while the fatty acid composition of intact phospholipids were determined by characteristic fragments occurring during MS2 measurements with negative electrospray ionization. Free fatty acids from the total lipid extract were measured as methyl esters were via gas chromatography - mass spectrometry and identified with standards and based on their retention order.

Metadata Access
Creator Heyen, Simone ORCID logo; Schneider, Vivien; Hüppe, Lukas ORCID logo; Meyer, Bettina ORCID logo; Wilkes, Heinz
Publisher PANGAEA
Publication Year 2023
Funding Reference Bundesministerium für Bildung und Forschung, Bonn Crossref Funder ID 161B0871A BioProMare: KiGuMi; Bundesministerium für Bildung und Forschung, Bonn Crossref Funder ID 161B0871C BioProMare: KiGuMi - Biotechnologisches Potential des Darm-Mikrobioms des Antarktischen Krills, Teilprojekt
Rights Data access is restricted (moratorium, sensitive data, license constraints)
OpenAccess false
Language English
Resource Type Bundled Publication of Datasets; Collection
Format application/zip
Size 2 datasets
Discipline Earth System Research
Spatial Coverage (-57.440W, -62.581S, -46.145E, -60.101N)
Temporal Coverage Begin 2021-05-13T15:20:00Z
Temporal Coverage End 2022-03-06T15:15:00Z