Evidence map›Paper›PMID 33343020›Full record

ArticleHydrobiologia2021

Polyunsaturated fatty acids in fish tissues more closely resemble algal than terrestrial diet sources.

Nadine Ebm, Fen Guo, Michael T Brett, Stuart E Bunn, Martin J Kainz

Open access · hybridAbstract read
In one paragraph

Article in Hydrobiologia, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 13 papers.

0numbers the graph read from it
0cells of the map it votes in
13citing papers in PubMed
7.9field-weighted citation impact, top 2% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

13 citing papers in PubMed, 62 citations in OpenAlex.

  1. Article
  2. Review
  3. Review
  4. Article
  5. Article
  6. Article
  7. Article
  8. The Effect of Feeding with Chironomid andAquaculture nutrition · 2024
    Article
  9. Article
  10. Article
  11. Microalgal polyunsaturated fatty acids: Hotspots and production techniques.Frontiers in bioengineering and biotechnology · 2023
    Review
  12. Assessment of Compound-Specific Fatty Acid δEnvironmental science & technology · 2022
    Article
  13. Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 5 institutions in 4 countries.

Nadine EbmWasserCluster Lunz - Inter-university Center for Aquatic Ecosystem Studies, 3293 Lunz Am See, Austria.ORCID 0000-0002-7111-6698
Fen GuoSimon F.S. Li Marine Science Laboratory, School of Life Sciences, The Chinese University of Hong Kong, Hong Kong, China.ORCID 0000-0002-4976-5456
Michael T BrettDepartment of Civil and Environmental Engineering, University of Washington, Seattle, WA 98195 USA.ORCID https://orcid.org/0000-0001-5065-2144
Stuart E BunnAustralian Rivers Institute, Griffith University, Nathan, QLD 4111 Australia.ORCID 0000-0002-6540-3586
Martin J KainzWasserCluster Lunz - Inter-university Center for Aquatic Ecosystem Studies, 3293 Lunz Am See, Austria.ORCID 0000-0002-2388-1504
Chinese University of Hong Kong · HKGriffith University · AUUniversität für Weiterbildung Krems · ATUniversity of Vienna · ATUniversity of Washington · US

Funding

Austrian Science Fund FWF P 28902
6 · The paper itself

Abstract

The 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.

Indexed as

Docosahexaenoic acidFish brainFish eyesFood qualityHeadwatersStream food webs

Identifiers

PMID33343020
PMCPMC7738338
OpenAlexW3099673788

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.