Muscle bioenergetics of two emblematic Mediterranean fish species: Sardina pilchardus and Sparus aurata.

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ID: 2565
2019
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Ranked #2 of 32 articles by views in comparative biochemistry and physiology part a, molecular & integrative physiology

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Abstract
We investigated links between swimming behavior and muscle bioenergetics in two emblematic Mediterranean fish species that have very different ecologies and activity levels. European sardines Sardina pilchardus are pelagic, they swim aerobically, school constantly and have high muscle fat content. Gilthead seabream Sparus aurata are bentho-pelagic, they show discontinuous spontaneous swimming patterns and store less fat in their muscle. Estimating the proportion of red and white muscle phenotypes, sardine exhibited a larger proportion of red muscle (~10% of the body mass) compared to gilthead seabream (~5% of the body mass). We firstly studied red and white muscle fiber bioenergetics, using high-resolution respirometers, showing a 4-fold higher oxidation capacity for red compared to white muscle. Secondly, we aimed to compare the red muscle ability to oxidize either lipids or carbohydrates. Sardine red muscle had a 3-fold higher oxidative capacity than gilthead seabream and a greater capacity to oxidize lipids. This study provides novel insights into physiological mechanisms underlying the different lifestyles of these highly-prized species.
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teulier2019musclecomparative Use this key to autocite in the manuscript while using SciMatic Manuscript Manager or Thesis Manager
Authors Teulier, Loïc;Thoral, Elisa;Queiros, Quentin;McKenzie, David J;Roussel, Damien;Dutto, Gilbert;Gasset, Eric;Bourjea, Jérôme;Saraux, Claire;
Journal comparative biochemistry and physiology part a, molecular & integrative physiology
Year 2019
DOI
S1095-6433(19)30146-1
URL
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