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dc.contributor.authorTaipale, Sami J.
dc.contributor.authorKers, Erwin
dc.contributor.authorPeltomaa, Elina
dc.contributor.authorLoehr, John
dc.contributor.authorKainz, Martin J.
dc.date.accessioned2021-04-12T06:37:23Z
dc.date.available2021-04-12T06:37:23Z
dc.date.issued2021
dc.identifier.citationTaipale, S. J., Kers, E., Peltomaa, E., Loehr, J., & Kainz, M. J. (2021). Selective Fatty Acid Retention and Turnover in the Freshwater Amphipod Pallaseopsis quadrispinosa. <i>Biomolecules</i>, <i>11</i>(3), Article 478. <a href="https://doi.org/10.3390/biom11030478" target="_blank">https://doi.org/10.3390/biom11030478</a>
dc.identifier.otherCONVID_66350252
dc.identifier.urihttps://jyx.jyu.fi/handle/123456789/75014
dc.description.abstractGammarid amphipods are a crucial link connecting primary producers with secondary consumers, but little is known about their nutritional ecology. Here we asked how starvation and subsequent feeding on different nutritional quality algae influences fatty acid retention, compound-specific isotopic carbon fractionation, and biosynthesis of ω-3 and ω-6 polyunsaturated fatty acids (PUFA) in the relict gammarid amphipod Pallaseopsis quadrispinosa. The fatty acid profiles of P. quadrispinosa closely matched with those of the dietary green algae after only seven days of refeeding, whereas fatty acid patterns of P. quadrispinosa were less consistent with those of the diatom diet. This was mainly due to P. quadrispinosa suffering energy limitation in the diatom treatment which initiated the metabolization of 16:1ω7 and partly 18:1ω9 for energy, but retained high levels of eicosapentaenoic acid (EPA) and docosahexaenoic acid (DHA) similar to those found in wild-caught organisms. Moreover, α-linolenic acid (ALA) from green algae was mainly stored and not allocated to membranes at high levels nor biosynthesized to EPA. The arachidonic acid (ARA) content in membrane was much lower than EPA and P. quadrispinosa was able to biosynthesize long-chain ω-6 PUFA from linoleic acid (LA). Our experiment revealed that diet quality has a great impact on fatty acid biosynthesis, retention and turnover in this consumer.en
dc.format.mimetypeapplication/pdf
dc.languageeng
dc.language.isoeng
dc.publisherMDPI
dc.relation.ispartofseriesBiomolecules
dc.rightsCC BY 4.0
dc.subject.otherpolyunsaturated fatty acids
dc.subject.othernutritional ecology
dc.subject.otherfreshwater
dc.subject.otheramphipod
dc.titleSelective Fatty Acid Retention and Turnover in the Freshwater Amphipod Pallaseopsis quadrispinosa
dc.typearticle
dc.identifier.urnURN:NBN:fi:jyu-202104122326
dc.contributor.laitosBio- ja ympäristötieteiden laitosfi
dc.contributor.laitosDepartment of Biological and Environmental Scienceen
dc.contributor.oppiaineAkvaattiset tieteetfi
dc.contributor.oppiaineAquatic Sciencesen
dc.type.urihttp://purl.org/eprint/type/JournalArticle
dc.description.reviewstatuspeerReviewed
dc.relation.issn2218-273X
dc.relation.numberinseries3
dc.relation.volume11
dc.type.versionpublishedVersion
dc.rights.copyright© 2021 the Authors
dc.rights.accesslevelopenAccessfi
dc.subject.ysokatkat
dc.subject.ysovesiekosysteemit
dc.subject.ysorasvahapot
dc.subject.ysoravintoaineet
dc.subject.ysoäyriäiset
dc.subject.ysoravinnekierto
dc.subject.ysoomegarasvahapot
dc.format.contentfulltext
jyx.subject.urihttp://www.yso.fi/onto/yso/p15741
jyx.subject.urihttp://www.yso.fi/onto/yso/p11000
jyx.subject.urihttp://www.yso.fi/onto/yso/p4800
jyx.subject.urihttp://www.yso.fi/onto/yso/p3939
jyx.subject.urihttp://www.yso.fi/onto/yso/p5659
jyx.subject.urihttp://www.yso.fi/onto/yso/p22936
jyx.subject.urihttp://www.yso.fi/onto/yso/p23183
dc.rights.urlhttps://creativecommons.org/licenses/by/4.0/
dc.relation.doi10.3390/biom11030478
jyx.fundinginformationThis research was supported by Lammi Biological Station, University of Helsinki.


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