| Registro completo |
| Provedor de dados: |
ArchiMer
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| País: |
France
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| Título: |
Muscle bioenergetics of two emblematic Mediterranean fish species: Sardina pilchardus and Sparus aurata
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| Autores: |
Teulier, Loïc
Thoral, Elisa
Queiros, Quentin
Mckenzie, David
Roussel, Damien
Dutto, Gilbert
Gasset, Eric
Bourjea, Jerome
Saraux, Claire
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| Data: |
2019-09
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| Ano: |
2019
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| Palavras-chave: |
Red muscle
Bioenergetics
Marine fishes
Lipids
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| Resumo: |
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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| Tipo: |
Text
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| Idioma: |
Inglês
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| Identificador: |
https://archimer.ifremer.fr/doc/00502/61390/65054.pdf
DOI:10.1016/j.cbpa.2019.06.008
https://archimer.ifremer.fr/doc/00502/61390/
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| Editor: |
Elsevier BV
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| Formato: |
application/pdf
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| Fonte: |
Comparative Biochemistry And Physiology A-molecular & Integrative Physiology (1095-6433) (Elsevier BV), 2019-09 , Vol. 235 , P. 174-179
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| Direitos: |
info:eu-repo/semantics/openAccess
restricted use
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