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Cited by 74Marine and fisheries researchIsotope Analysis in EcologyAquaculture Nutrition and Growth

Spatial Patterns and Temperature Predictions of Tuna Fatty Acids: Tracing Essential Nutrients and Changes in Primary Producers

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Pethybridge, Heidi R., Parrish, Christopher C., Morrongiello, John, Young, Jock W., Farley, Jessica H., Gunasekera, Rasanthi M., Nichols, Peter D.·2015·PLOS ONE
DOI 10.1371/journal.pone.0131598PMC PMC4489677
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Abstract

Fatty acids are among the least understood nutrients in marine environments, despite their profile as key energy components of food webs and that they are essential to all life forms. Presented here is a novel approach to predict the spatial-temporal distributions of fatty acids in marine resources using generalized additive mixed models. Fatty acid tracers (FAT) of key primary producers, nutritional condition indices and concentrations of two essential long-chain (≥C20) omega-3 fatty acids (EFA) measured in muscle of albacore tuna, Thunnus alalunga, sampled in the south-west Pacific Ocean were response variables. Predictive variables were: location, time, sea surface temperature (SST) and chlorophyll-a (Chla), and phytoplankton biomass at time of catch and curved fork length. The best model fit for all fatty acid parameters included fish length and SST. The first oceanographic contour maps of EFA and FAT (FATscapes) were produced and demonstrated clear geographical gradients in the study region. Predicted changes in all fatty acid parameters reflected shifts in the size-structure of dominant primary producers. Model projections show that the supply and availability of EFA are likely to be negatively affected by increases in SST especially in temperate waters where a 12% reduction in both total fatty acid content and EFA proportions are predicted. Such changes will have large implications for the availability of energy and associated health benefits to high-order consumers. Results convey new concerns on impacts of projected climate change on fish-derived EFA in marine systems.

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  • Global warming could significantly reduce the concentration of fatty acids in tunas, which are beneficial for the consumer.

    “el calentamiento global podría reducir significativamente la concentración de ácidos grasos en túnidos, los cuales son beneficiosos para el consumidor (Pethybridge et al. 2015).”

    From Túnidos tropicales: calentamiento global y seguridad alimentaria, una visión global (2019) · cites this paper as Pethybridge et al. 2015

    The Results project lower total fatty acids and EPA and DHA concentrations in albacore tuna under a 1°C rise in sea surface temperature; the Discussion identifies EPA and DHA as beneficial to human nutrition. The claim extends this prediction to tunas generally, whereas the reported projections concern albacore, with the largest declines in temperate waters. (LLM, conf=0.85)

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Authors
Pethybridge, H. R., Parrish, C. C., Morrongiello, J., Young, J. W., Farley, J. H., Gunasekera, R. M., & Nichols, P. D.
Affiliations
  • CSIRO Oceans and Atmosphere (AU)
  • Memorial University of Newfoundland (CA)
Corresponding author
Pethybridge, Heidi R.
ORCID
Venue
PLOS ONE
Publisher
Public Library of Science (PLoS)
Published
2015-07-02
Volume
10
Issue
7
Pages
e0131598
ISSN
1932-6203 (ISSN-L)
DOI
10.1371/journal.pone.0131598
PMC
PMC4489677
OpenAlex
W1601223168
Cited by
74
References
0
Citations by year
2026: 1 · 2025: 6 · 2024: 7 · 2023: 7 · 2022: 7 · 2021: 6 · 2020: 7 · 2019: 7 · 2018: 14 · 2017: 6 · 2016: 6
FWCI
7.11
Type
journal article
Language
en
Open access
Licence
Locations
  • PLoS ONE (publishedVersion, cc-by)
  • Europe PMC (PubMed Central) (publishedVersion, cc-by)
  • PubMed Central (publishedVersion, cc-by)
  • PubMed (publishedVersion)
  • Minerva Access (University of Melbourne) (submittedVersion, cc-by)
  • eCite Digital Repository (University of Tasmania) (submittedVersion, cc-by)
  • DOAJ (DOAJ: Directory of Open Access Journals) (submittedVersion, cc-by-sa)
  • Figshare (submittedVersion, cc-by)
Funders
  • European Commission
  • Commonwealth Scientific and Industrial Research Organisation
Topics
  • Physical Sciences › Environmental Science › Global and Planetary Change › Marine and fisheries research
  • Physical Sciences › Environmental Science › Ecology › Isotope Analysis in Ecology
  • Life Sciences › Agricultural and Biological Sciences › Aquatic Science › Aquaculture Nutrition and Growth
Keywords
fatty acids, omega-3 fatty acids, albacore tuna, fatty acid tracers, essential fatty acids, sea surface temperature, chlorophyll a, phytoplankton biomass, primary producers, spatiotemporal variation, climate change impacts, generalized additive mixed models, fish muscle
MeSH terms
Chlorophyll A, Algorithms, Animals, Chlorophyll, Fatty Acids, Models, Biological, Muscles, Oceanography, Pacific Ocean, Phytoplankton, Temperature, Tuna, Fatty Acids, Omega-3, Seafood, Biomass, Food Chain, Climate Change, Spatio-Temporal Analysis

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