Retention of essential fatty acids in fish differs by species, habitat use and nutritional quality of prey

Bandara, Tharindu; Brügel, Sonia; Andersson, Agneta; Lau, Danny C. P.

doi:10.1002/ece3.10158

Cited by 6 publications

(1 citation statement)

References 71 publications

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“…That said, fish consumers do have abilities to biosynthesize saturated fatty acids and desaturate them to form some unsaturated fatty acids [ 24 ]. In addition, fish will preferentially retain certain fatty acids obtained through diet (e.g., [ 25 , 26 ]). Thus, FA composition of consumers is not expected to be proportional to FA composition of their prey.…”

Section: Introductionmentioning

confidence: 99%

Stable isotope and fatty acid variation of a planktivorous fish among and within large lakes

Höök,

Kalejs,

Axenrot

et al. 2024

PLoS ONE

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Aquatic food webs are spatially complex, potentially contributing to intraspecific variability in production pathway reliance of intermediate trophic level consumers. Variation in trophic reliance may be described by well-established trophic indicators, like stable isotope ratios (δ13C, δ15N), along with emerging trophic indicators, such as fatty acid composition. We evaluated stable isotope ratios and fatty acid profiles of European smelt (Osmerus eperlanus) among and within distinct regions of three large Swedish lakes (Hjälmaren, Mälaren, Vättern) which differed in trophic status. We expected that smelts in more oligotrophic lakes and regions would be characterized by distinct stable isotope signatures and fatty acid profiles, with particularly high polyunsaturated fatty acid (PUFA) relative levels. However, we acknowledge that frequent movement of smelts among regions may serve to spatially integrate their diet and lead to limited within-lake variation in stable isotope ratios and fatty acid composition. As expected, in comparison with more productive lakes (i.e., Hjälmaren and Mälaren), smelts from ultra-oligotrophic Vättern were characterized by low δ15N, high δ13C and high percent of a dominant PUFA, docosahexaenoic acid (DHA). Smelts from different regions of the morphometrically complex Mälaren displayed differential stable isotope ratios and fatty acid relative concentrations, which were consistent with within-lake differences in productivity and water residence times, suggesting that smelts in this lake forage locally within distinct regions. Finally, at the individual smelt level there were particularly strong and consistent associations between a well-established trophic indicator (δ13C) and percent DHA, suggesting that the relative concentration of this fatty acid may be a useful additional trophic indicator for smelt.

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Section: Introductionmentioning

confidence: 99%

Stable isotope and fatty acid variation of a planktivorous fish among and within large lakes

Höök,

Kalejs,

Axenrot

et al. 2024

PLoS ONE

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The Implications of Atlantic Salmon (Salmo salar L.) Fatty Acid Profiles for Their Thiamine Status

Todisco,

Hauber,

Brett

et al. 2024

Ecology and Evolution

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Thiamine deficiency is an ongoing issue across the Northern Hemisphere, causing reproductive failure in multiple salmonid populations. In the Baltic Sea, a large brackish water system in northern Europe, previous research has suggested that this deficiency is associated with lipid‐rich diets with a high proportion of docosahexaenoic acid (DHA, 22:6n‐3). The mechanism proposed is that a diet abundant in highly unsaturated fatty acids, such as DHA, depletes thiamine as an antioxidant defense in adult salmonids, rather than allocating thiamine to the offspring. In light of this existing hypothesis, we here explore the relationship between diet history and the related fatty acid (FA), profiles, and thiamine status of Atlantic salmon (Salmo salar L.) in three systems: the Baltic Sea, the North Atlantic Ocean, and Lake Vänern. Atlantic salmon inhabiting each system is known to have unique feeding histories and thiamine status. Our results showed that despite extensive sampling effort and distinct FA profiles, indicative of their diverse diets, there were no correlations between any FAs, including DHA, and the thiamine status of these populations. This finding does not support the above‐mentioned hypothesis that diets rich in easily oxidized FAs would lead to lower thiamine concentrations in salmon tissues. Additionally, we found that changes in the salmon FA profiles throughout their life cycle are consistent for both low‐thiamine populations from the Baltic Sea and medium‐thiamine populations from North Atlantic Ocean, suggesting that these changes might not be involved in thiamine deficiency development.

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Replacement of fish oil by palm oil in diet for juvenile greenfin horse-faced filefish (Thamnaconus septentrionalis): Effects on growth performance, fatty acid composition, antioxidant capacity and inflammatory responses

Li,

Zhang,

Wang

et al. 2025

Aquaculture

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Retention of essential fatty acids in fish differs by species, habitat use and nutritional quality of prey

Abstract: This is an open access article under the terms of the Creative Commons Attribution License, which permits use, distribution and reproduction in any medium, provided the original work is properly cited.

Cited by 6 publications

References 71 publications

Stable isotope and fatty acid variation of a planktivorous fish among and within large lakes

Stable isotope and fatty acid variation of a planktivorous fish among and within large lakes

The Implications of Atlantic Salmon (Salmo salar L.) Fatty Acid Profiles for Their Thiamine Status

Replacement of fish oil by palm oil in diet for juvenile greenfin horse-faced filefish (Thamnaconus septentrionalis): Effects on growth performance, fatty acid composition, antioxidant capacity and inflammatory responses

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