Glycolytic fluxes in European silver eel, Anguilla anguilla: sex differences and temperature sensitivity.
International audience European silver eels migrate 6000 km to their supposed spawning area in the Sargasso sea. As the eel is fasting, this intense swimming activity is realised only with fat stores, involving mainly red muscle i.e. aerobic metabolism. However, eel migration is performed at depth a...
Published in: | Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology |
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Online Access: | https://hal.univ-brest.fr/hal-00750447 https://doi.org/10.1016/j.cbpa.2008.08.016 |
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ftccsdartic:oai:HAL:hal-00750447v1 2023-05-15T13:27:57+02:00 Glycolytic fluxes in European silver eel, Anguilla anguilla: sex differences and temperature sensitivity. Scaion, Delphine Sébert, Philippe 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) 2008-12 https://hal.univ-brest.fr/hal-00750447 https://doi.org/10.1016/j.cbpa.2008.08.016 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cbpa.2008.08.016 info:eu-repo/semantics/altIdentifier/pmid/18789394 hal-00750447 https://hal.univ-brest.fr/hal-00750447 doi:10.1016/j.cbpa.2008.08.016 PUBMED: 18789394 ISSN: 1095-6433 Comparative Biochemistry and Physiology - Part A: Molecular and Integrative Physiology https://hal.univ-brest.fr/hal-00750447 Comparative Biochemistry and Physiology - Part A: Molecular and Integrative Physiology, Elsevier, 2008, 151 (4), pp.687-90. ⟨10.1016/j.cbpa.2008.08.016⟩ MESH: Aerobiosis MESH: Anaerobiosis MESH: Temperature MESH: Anguilla MESH: Animal Migration MESH: Animals MESH: Energy Metabolism MESH: Female MESH: Glycolysis MESH: Male MESH: Sex Characteristics [SDV.MHEP.PHY]Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO] info:eu-repo/semantics/article Journal articles 2008 ftccsdartic https://doi.org/10.1016/j.cbpa.2008.08.016 2021-10-17T01:44:59Z International audience European silver eels migrate 6000 km to their supposed spawning area in the Sargasso sea. As the eel is fasting, this intense swimming activity is realised only with fat stores, involving mainly red muscle i.e. aerobic metabolism. However, eel migration is performed at depth and thus in cold water, both being known to induce changes in muscle energy metabolism. During migration, white and red muscles can operate together or separately in order to counteract the eventual effects of low temperatures and/or high pressures. We have studied the temperature sensitivity (5, 15, and 25 degrees C) of aerobic and anaerobic metabolism in both sexes. At the same temperature, migrating eels have a higher basal glycolytic flux. Moreover, there are temperature and sex effects: anaerobic glycolysis (JB) is more sensitive to cold water whereas aerobic (JA) is more affected by warm. Males, which are less sensitive to cold water, also have higher aerobic fluxes than females. As depth corresponds to low temperature, the possibility that males migrate more deeply than females is discussed. In an ecophysiological context, it is interesting to suppose that males and female eels migrate at different depths in order to optimize their energy utilization by aerobic and / or anaerobic pathways. Article in Journal/Newspaper Anguilla anguilla Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology 151 4 687 690 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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ftccsdartic |
language |
English |
topic |
MESH: Aerobiosis MESH: Anaerobiosis MESH: Temperature MESH: Anguilla MESH: Animal Migration MESH: Animals MESH: Energy Metabolism MESH: Female MESH: Glycolysis MESH: Male MESH: Sex Characteristics [SDV.MHEP.PHY]Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO] |
spellingShingle |
MESH: Aerobiosis MESH: Anaerobiosis MESH: Temperature MESH: Anguilla MESH: Animal Migration MESH: Animals MESH: Energy Metabolism MESH: Female MESH: Glycolysis MESH: Male MESH: Sex Characteristics [SDV.MHEP.PHY]Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO] Scaion, Delphine Sébert, Philippe Glycolytic fluxes in European silver eel, Anguilla anguilla: sex differences and temperature sensitivity. |
topic_facet |
MESH: Aerobiosis MESH: Anaerobiosis MESH: Temperature MESH: Anguilla MESH: Animal Migration MESH: Animals MESH: Energy Metabolism MESH: Female MESH: Glycolysis MESH: Male MESH: Sex Characteristics [SDV.MHEP.PHY]Life Sciences [q-bio]/Human health and pathology/Tissues and Organs [q-bio.TO] |
description |
International audience European silver eels migrate 6000 km to their supposed spawning area in the Sargasso sea. As the eel is fasting, this intense swimming activity is realised only with fat stores, involving mainly red muscle i.e. aerobic metabolism. However, eel migration is performed at depth and thus in cold water, both being known to induce changes in muscle energy metabolism. During migration, white and red muscles can operate together or separately in order to counteract the eventual effects of low temperatures and/or high pressures. We have studied the temperature sensitivity (5, 15, and 25 degrees C) of aerobic and anaerobic metabolism in both sexes. At the same temperature, migrating eels have a higher basal glycolytic flux. Moreover, there are temperature and sex effects: anaerobic glycolysis (JB) is more sensitive to cold water whereas aerobic (JA) is more affected by warm. Males, which are less sensitive to cold water, also have higher aerobic fluxes than females. As depth corresponds to low temperature, the possibility that males migrate more deeply than females is discussed. In an ecophysiological context, it is interesting to suppose that males and female eels migrate at different depths in order to optimize their energy utilization by aerobic and / or anaerobic pathways. |
author2 |
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 |
author |
Scaion, Delphine Sébert, Philippe |
author_facet |
Scaion, Delphine Sébert, Philippe |
author_sort |
Scaion, Delphine |
title |
Glycolytic fluxes in European silver eel, Anguilla anguilla: sex differences and temperature sensitivity. |
title_short |
Glycolytic fluxes in European silver eel, Anguilla anguilla: sex differences and temperature sensitivity. |
title_full |
Glycolytic fluxes in European silver eel, Anguilla anguilla: sex differences and temperature sensitivity. |
title_fullStr |
Glycolytic fluxes in European silver eel, Anguilla anguilla: sex differences and temperature sensitivity. |
title_full_unstemmed |
Glycolytic fluxes in European silver eel, Anguilla anguilla: sex differences and temperature sensitivity. |
title_sort |
glycolytic fluxes in european silver eel, anguilla anguilla: sex differences and temperature sensitivity. |
publisher |
HAL CCSD |
publishDate |
2008 |
url |
https://hal.univ-brest.fr/hal-00750447 https://doi.org/10.1016/j.cbpa.2008.08.016 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
ISSN: 1095-6433 Comparative Biochemistry and Physiology - Part A: Molecular and Integrative Physiology https://hal.univ-brest.fr/hal-00750447 Comparative Biochemistry and Physiology - Part A: Molecular and Integrative Physiology, Elsevier, 2008, 151 (4), pp.687-90. ⟨10.1016/j.cbpa.2008.08.016⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cbpa.2008.08.016 info:eu-repo/semantics/altIdentifier/pmid/18789394 hal-00750447 https://hal.univ-brest.fr/hal-00750447 doi:10.1016/j.cbpa.2008.08.016 PUBMED: 18789394 |
op_doi |
https://doi.org/10.1016/j.cbpa.2008.08.016 |
container_title |
Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology |
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151 |
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