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dc.contributor.authorEbm, N
dc.contributor.authorGuo, F
dc.contributor.authorBrett, MT
dc.contributor.authorBunn, SE
dc.contributor.authorKainz, MJ
dc.date.accessioned2020-12-18T00:59:10Z
dc.date.available2020-12-18T00:59:10Z
dc.date.issued2020
dc.identifier.issn0018-8158
dc.identifier.doi10.1007/s10750-020-04445-1
dc.identifier.urihttp://hdl.handle.net/10072/400361
dc.description.abstractThe River Continuum Concept implies that consumers in headwater streams have greater dietary access to terrestrial basal resources, but recent studies have highlighted the dietary importance of high-quality algae. Algae provide consumers with physiologically important omega-3 (n-3) polyunsaturated fatty acids (PUFA), particularly eicosapentaenoic acid (EPA). However, terrestrial plants and most benthic stream algae lack the long-chain (LC) n-3 PUFA docosahexaenoic acid (DHA, 22:6n-3), which is essential for neural development in fish and other vertebrates. We sampled subalpine streams to investigate how the PUFA composition of neural (brain and eyes), muscle, and liver tissues of freshwater fish is related to their potential diets (macroinvertebrates, epilithon, fresh and conditioned terrestrial leaves). The PUFA composition of consumers was more similar to epilithon than to terrestrial leaves. Storage lipids of eyes most closely resembled dietary PUFA (aquatic invertebrates and algae). However, DHA and arachidonic acid (ARA, 20:4n-6) were not directly available in the diet but abundant in organs. This implies that algal PUFA were selectively retained or were produced internally via enzymatic PUFA conversion by aquatic consumers. This field study demonstrates the nutritional importance of algal PUFA for neural organs in aquatic consumers of headwater regions.
dc.description.peerreviewedYes
dc.languageEnglish
dc.language.isoeng
dc.publisherSpringer Science and Business Media LLC
dc.relation.ispartofpagefrom371
dc.relation.ispartofpageto383
dc.relation.ispartofjournalHydrobiologia
dc.relation.ispartofvolume848
dc.subject.fieldofresearchEarth Sciences
dc.subject.fieldofresearchEnvironmental Sciences
dc.subject.fieldofresearchBiological Sciences
dc.subject.fieldofresearchcode04
dc.subject.fieldofresearchcode05
dc.subject.fieldofresearchcode06
dc.titlePolyunsaturated fatty acids in fish tissues more closely resemble algal than terrestrial diet sources
dc.typeJournal article
dc.type.descriptionC1 - Articles
dcterms.bibliographicCitationEbm, N; Guo, F; Brett, MT; Bunn, SE; Kainz, MJ, Polyunsaturated fatty acids in fish tissues more closely resemble algal than terrestrial diet sources, Hydrobiologia, 2020, 848, pp. 371–383
dcterms.licensehttp://creativecommons.org/licenses/by/4.0/
dc.date.updated2020-12-18T00:55:11Z
dc.description.versionVersion of Record (VoR)
gro.rights.copyright© The Author(s) 2020. This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made.
gro.hasfulltextFull Text
gro.griffith.authorBunn, Stuart E.


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