In vitro aerobic and anaerobic muscle capacities in the European eel, Anguilla anguilla: effects of a swimming session.

• Published in: Respiratory Physiology & Neurobiology
• Main Authors: Sébert, Philippe, Mortelette, Hélène, Nicolas, Jonathan, Amérand, Aline, Belhomme, Marc, Moisan, Christine
• Other Authors: Optimisation des régulations physiologiques (ORPHY (EA 4324)), Institut Brestois Santé Agro Matière (IBSAM), Université de Brest (UBO)-Université de Brest (UBO)-Université de Brest (UBO)-Centre Hospitalier Régional Universitaire de Brest (CHRU Brest)
• Format: Article in Journal/Newspaper
• Language: English
• Published: HAL CCSD 2011
• Subjects: MESH: Anguilla; MESH: Animals; MESH: Eels; MESH: Muscle; Skeletal; MESH: Oxygen Consumption; MESH: Physical Conditioning; Animal; MESH: Swimming; [SDV.MHEP.PHY]Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO]; Anguilla anguilla
• Online Access: https://hal.univ-brest.fr/hal-00750442; https://doi.org/10.1016/j.resp.2011.02.003

International audience In order to have a general view of metabolic requirements during swimming, in vitro aerobic and anaerobic fluxes were measured in red and white muscles from silver eels and yellow eels which differ in activity levels and nutritional states. These measurements were performed in control eels and after a 4 day swimming session (70% U(crit) in yellow eels, 80% U(crit) in silver eels). A swimming session significantly increases U(crit) from 12% to 18%, depending on the stage, with a significantly higher in vitro energy cost during the yellow stage at the muscle level. In vitro, the swimming session brings about a gain in anaerobic capacities rather than in aerobic ones. Some in vivo hypotheses are proposed.