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Publication . Other literature type . Article . 2019

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

Loïc Teulier; Elisa Thoral; Quentin Queiros; David J. McKenzie; Damien Roussel; Gilbert Dutto; Eric Gasset; +2 Authors
Open Access
Published: 01 Sep 2019
Publisher: HAL CCSD
Country: France

International audience; 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 pe- lagic, 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 un- derlying the different lifestyles of these highly-prized species.

Subjects by Vocabulary

Microsoft Academic Graph classification: Bioenergetics Mediterranean climate Muscle fibre Sardina pilchardus Zoology Respirometer Fish species Sardine Pelagic zone Biology


Red muscle Bioenergetics Marine fishes Lipids, [SDE.BE]Environmental Sciences/Biodiversity and Ecology, Molecular Biology, Physiology, Biochemistry, Red muscle, Bioenergetics, Marine fishes, Lipids