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Khalil, Munawar; Stuhr, Marleen; Kunzmann, Andreas; Westphal, Hildegard: Fatty acid composition of the tropical-subtropical starfish Aquilonastra yairi under ocean acidification and warming in the laboratory [dataset]. PANGAEA, https://doi.pangaea.de/10.1594/PANGAEA.965902 (dataset in review)

Abstract:
Lipid-associated fatty acids (FAs) were determined in the tropical-subtropical starfish Aquilonastra yairi from the culture stock of the ZMT-MAREE laboratory in response to projected near-future global change. To investigate the physicochemical alteration of starfish induced by elevated seawater pCO2 and temperature, starfish of the species A. yairi (342 specimens, size 3-11 mm in diameter, culture stock) were reared in aquaria system under controlled experimental environment conditions at ZMT-MAREE. The starfish were acclimatized to two temperature levels (27 °C, 32 °C) crossed with three pCO2 concentrations (455 µatm, 1052 µatm, 2066 µatm). The fatty acids (FAs) of the starfish were determined as fatty acid methyl esters (FAMEs) in accordance with methods from Christie (1998). FA composition was unaffected by combined elevated temperature and pCO2, but at elevated temperature, there was an increase in saturated FAs (SFAs) and polyunsaturated FAs (PUFAs), and a decrease in monounsaturated FAs (MUFAs). Our results indicate that the lipid-associated biochemistry of A. yairi is resilient and capable of coping with near-future ocean acidification and warming.
Keyword(s):
fatty acids; global change; Laboratory experiment; monounsaturated fatty acids; polyunsaturated fatty acids; saturated fatty acids; starfish
References:
Christie, William W (1998): Gas chromatography‐mass spectrometry methods for structural analysis of fatty acids. Lipids, 33(4), 343-353, https://doi.org/10.1007/s11745-998-0214-x
Dickson, Andrew G; Sabine, Christopher L; Christian, J R (2007): Guide to Best Practices for Ocean CO2 Measurements. PICES Special Publication, 3, 191 pp, hdl:10013/epic.51789.d001
Pierrot, D E; Lewis, E; Wallace, D W R (2006): MS Excel Program Developed for CO2 System Calculations. Carbon Dioxide Information Analysis Center, Oak Ridge National Laboratory, U.S. Department of Energy, https://doi.org/10.3334/CDIAC/otg.CO2SYS_XLS_CDIAC105a
Parameter(s):
#NameShort NameUnitPrincipal InvestigatorMethod/DeviceComment
1Type of studyStudy typeKhalil, Munawar
2Species, unique identificationSpecies UIDKhalil, Munawar
3Species, unique identification (URI)Species UID (URI)Khalil, Munawar
4Species, unique identification (Semantic URI)Species UID (Semantic URI)Khalil, Munawar
5TreatmentTreatKhalil, Munawar
6Sampling date/time, experimentDate/time sampling expKhalil, Munawar
7Treatment: temperatureT:temp°CKhalil, MunawarMulti-parameter portable meter, Xylem Analytics, WTW MultiLine® 3630 IDS
8Treatment: partial pressure of carbon dioxideT:pCO2µatmKhalil, Munawarcalculated from carbonate chemistry using the CO2Sys Excel sheet (Pierrot, Lewis & Wallace, 2006)
9pHpHKhalil, MunawarSpectrophotometer; according to Dickson et al. (2007)
10pH, standard deviationpH std dev±Khalil, MunawarCalculated
11Sample IDSample IDKhalil, Munawar
12Tetradecanoic acid, per dry mass14:0/dmµg/mgKhalil, MunawarGas chromatography - Mass spectrometry (GC-MS)
13Hexadecanoic acid, per dry mass16:0/dmµg/mgKhalil, MunawarGas chromatography - Mass spectrometry (GC-MS)
14Octadecanoic acid, per dry mass18:0/dmµg/mgKhalil, MunawarGas chromatography - Mass spectrometry (GC-MS)
15Eicosanoic acid, per dry mass20:0/dmµg/mgKhalil, MunawarGas chromatography - Mass spectrometry (GC-MS)
16Docosanoic acid, per dry mass22:0/dmµg/mgKhalil, MunawarGas chromatography - Mass spectrometry (GC-MS)
17Tetracosanoic acid, per dry mass24:0/dmµg/mgKhalil, MunawarGas chromatography - Mass spectrometry (GC-MS)
18cis-9-Tetradecenoic acid, per dry mass14:1(n-5)/dmµg/mgKhalil, MunawarGas chromatography - Mass spectrometry (GC-MS)
19cis-7-Hexadecenoic acid, per dry mass16:1(n-9)/dmµg/mgKhalil, MunawarGas chromatography - Mass spectrometry (GC-MS)
20cis-9-Octadecenoic acid, per dry mass18:1(n-9)/dmµg/mgKhalil, MunawarGas chromatography - Mass spectrometry (GC-MS)
21cis-11-Octadecenoic acid, per dry mass18:1(n-7)/dmµg/mgKhalil, MunawarGas chromatography - Mass spectrometry (GC-MS)
22cis-11-Eicosenoic acid, per dry mass20:1(n-9)/dmµg/mgKhalil, MunawarGas chromatography - Mass spectrometry (GC-MS)
23cis-13-Docosenoic acid, per dry mass22:1(n-9)/dmµg/mgKhalil, MunawarGas chromatography - Mass spectrometry (GC-MS)
249,12-Octadecadienoic acid, per dry mass18:2(n-6)/dmµg/mgKhalil, MunawarGas chromatography - Mass spectrometry (GC-MS)
259,12,15-Octadecatrienoic acid, per dry mass18:3(n-3)/dmµg/mgKhalil, MunawarGas chromatography - Mass spectrometry (GC-MS)
2611,14-Eicosadienoic acid, per dry mass20:2(n-6)/dmµg/mgKhalil, MunawarGas chromatography - Mass spectrometry (GC-MS)
275,8,11,14-Eicosatetraenoic acid, per dry mass20:4(n-6)/dmµg/mgKhalil, MunawarGas chromatography - Mass spectrometry (GC-MS)
285,8,11,14,17-Eicosapentaenoic acid, per dry mass20:5(n-3)/dmµg/mgKhalil, MunawarGas chromatography - Mass spectrometry (GC-MS)
294,7,10,13,16,19-Docosahexaenoic acid, per dry mass22:6(n-3)/dmµg/mgKhalil, MunawarGas chromatography - Mass spectrometry (GC-MS)
License:
Creative Commons Attribution 4.0 International (CC-BY-4.0) (License comes into effect after moratorium ends)
Status:
Curation Level: Enhanced curation (CurationLevelC) * Processing Level: PANGAEA data processing level 3 (ProcLevel3)
Size:
1304 data points

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