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June 13, 2026Conservation PhysiologyOpen Access

Fatty acid profiles recorded in ocean prey and California salmonine eggs reveal maternal ocean diets linked to thiamine deficiency

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Authors

JLJarrod M LudwigNMNathan J. MantuaRJRachel C. Johnson

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Overview

Randomized trial links maternal diet composition to thiamine levels in anadromous salmon eggs, suggesting dietary impacts on nutritional health.

Key Points

  • The research aims to establish a connection between the dietary habits of anadromous salmon and the thiamine concentration in their eggs.
  • Collected unfertilized eggs from Chinook salmon, coho salmon, and steelhead from 2020 to 2022.
  • Analyzed fatty acid signatures in fish tissues and prey using gas chromatography/mass spectrometry.
  • Measured total thiamine concentrations using high-performance liquid chromatography.
  • Eggs rich in oleic acid had higher thiamine concentrations, linked to a diet of Pacific herring.
  • Eggs with high levels of eicosapentaenoic acid indicated a diet from northern anchovy or euphausiid krill and had lower thiamine concentrations.
  • A strong negative correlation exists between polyunsaturated fatty acid proportions and total thiamine concentration in eggs.

Cite This Study

Ludwig et al. (2026) studied this question.

synapsesocial.com/papers/6a2cf6d7faef96ed7f05882bhttps://doi.org/10.1093/conphys/coag037
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