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

Type Article
Date 2019-09
Language English
Author(s) Teulier Loïc1, Thoral Elisa1, Queiros Quentin2, 6, McKenzie David3, Roussel Damien1, Dutto Gilbert4, Gasset EricORCID5, Bourjea JeromeORCID2, Saraux Claire2
Affiliation(s) 1 : Université de Lyon, UMR 5023, Écologie des Hydrosystèmes Naturels et Anthropisés, Université Lyon 1, ENTPE, CNRS, F - 69622 Villeurbanne, France
2 : MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, Avenue Jean Monnet, 34203 Sète Cedex, France
3 : MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, Place Eugène Bataillon, 34095 Montpellier, France
4 : Ifremer (Institut Français de Recherche pour l'Exploitation de la MER), Laboratoire SEA, Chemin de Maguelonne, 34250 Palavas-les-Flots, France
5 : MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, Chemin de Maguelonne, 34250 Palavas-les-Flots, France
6 : MARBEC, Université de Montpellier, CNRS, Ifremer, IRD, Avenue Jean Monnet, 34203 Sète Cedex, France
Source Comparative Biochemistry And Physiology A-molecular & Integrative Physiology (1095-6433) (Elsevier BV), 2019-09 , Vol. 235 , P. 174-179
DOI 10.1016/j.cbpa.2019.06.008
WOS© Times Cited 1
Keyword(s) Red muscle, Bioenergetics, Marine fishes, Lipids
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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Teulier Loïc, Thoral Elisa, Queiros Quentin, McKenzie David, Roussel Damien, Dutto Gilbert, Gasset Eric, Bourjea Jerome, Saraux Claire (2019). Muscle bioenergetics of two emblematic Mediterranean fish species: Sardina pilchardus and Sparus aurata. Comparative Biochemistry And Physiology A-molecular & Integrative Physiology, 235, 174-179. Publisher's official version : https://doi.org/10.1016/j.cbpa.2019.06.008 , Open Access version : https://archimer.ifremer.fr/doc/00502/61390/