Does a 5500-km swim trial stimulate early sexual maturation in the European eel (Anguilla anguilla L.)?
International audience The catadromous European eel (Anguilla anguilla L.) undertakes a 6000-km spawning migration from its freshwater habitats to the Sargasso Sea. In large Blazka swim tunnels of 127 l, the physiological effect of such a prolonged swimming performance on sexual maturation in adult...
Published in: | Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology |
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Online Access: | https://hal.archives-ouvertes.fr/hal-00181006 https://doi.org/10.1016/j.cbpa.2007.03.021 |
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ftccsdartic:oai:HAL:hal-00181006v1 2023-05-15T13:26:54+02:00 Does a 5500-km swim trial stimulate early sexual maturation in the European eel (Anguilla anguilla L.)? Van Ginneken, V. Dufour, S. Sbaihi, M. Balm, P. Noorlander, K. De Bakker, M. Doornbos, J. Palstra, A. Antonissen, E. Mayer, I. Van Den Thillart, G. Biologie des organismes marins et écosystèmes (BOME) Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN) 2007 https://hal.archives-ouvertes.fr/hal-00181006 https://doi.org/10.1016/j.cbpa.2007.03.021 en eng HAL CCSD Elsevier info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cbpa.2007.03.021 info:eu-repo/semantics/altIdentifier/pmid/17451986 hal-00181006 https://hal.archives-ouvertes.fr/hal-00181006 doi:10.1016/j.cbpa.2007.03.021 PUBMED: 17451986 ISSN: 1095-6433 Comparative Biochemistry and Physiology - Part A: Molecular and Integrative Physiology https://hal.archives-ouvertes.fr/hal-00181006 Comparative Biochemistry and Physiology - Part A: Molecular and Integrative Physiology, Elsevier, 2007, 147 (4), pp.1095-1103. ⟨10.1016/j.cbpa.2007.03.021⟩ Animals Eels Endocrine System Female Ovary Sexual Maturation Swimming Anguilla anguilla [SDV.BDD]Life Sciences [q-bio]/Development Biology info:eu-repo/semantics/article Journal articles 2007 ftccsdartic https://doi.org/10.1016/j.cbpa.2007.03.021 2020-12-26T16:59:21Z International audience The catadromous European eel (Anguilla anguilla L.) undertakes a 6000-km spawning migration from its freshwater habitats to the Sargasso Sea. In large Blazka swim tunnels of 127 l, the physiological effect of such a prolonged swimming performance on sexual maturation in adult female eels was investigated. Two groups of eels were placed in swim tunnels for 173 days, one group was able to swim at 0.5 body lengths/second (Swim group) covering a distance of c. 5500-km over the experimental period, and one group kept in static (End Control group). A control group was sampled at the start of the experiment in order to determine the initial stage of reproductive development (Initial Control group). At the end of the swim trial, the maturation parameters 11-ketotestosterone, pituitary levels of LH and plasma levels of estradiol were higher (although not significantly) in the Swim compared to the End Control group. In addition, no significant differences were observed in most measured morphometric and reproductive parameters, including eye-index, gonadosomatic index, hepatosomatic index, and plasma levels of vitellogenin, cortisol and melanophore-stimulating hormone (MSH). Also, pituitary levels of both MSH, and adrenocorticotropic hormone (ACTH) were unaffected. In contrast, the oocyte diameter was found to be significantly higher in the Swim compared to the End Control group. Based on these observations we conclude that a period of prolonged swimming might be a physiological stimulus necessary for the onset of maturation in the European eel. 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 147 4 1095 1103 |
institution |
Open Polar |
collection |
Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
op_collection_id |
ftccsdartic |
language |
English |
topic |
Animals Eels Endocrine System Female Ovary Sexual Maturation Swimming Anguilla anguilla [SDV.BDD]Life Sciences [q-bio]/Development Biology |
spellingShingle |
Animals Eels Endocrine System Female Ovary Sexual Maturation Swimming Anguilla anguilla [SDV.BDD]Life Sciences [q-bio]/Development Biology Van Ginneken, V. Dufour, S. Sbaihi, M. Balm, P. Noorlander, K. De Bakker, M. Doornbos, J. Palstra, A. Antonissen, E. Mayer, I. Van Den Thillart, G. Does a 5500-km swim trial stimulate early sexual maturation in the European eel (Anguilla anguilla L.)? |
topic_facet |
Animals Eels Endocrine System Female Ovary Sexual Maturation Swimming Anguilla anguilla [SDV.BDD]Life Sciences [q-bio]/Development Biology |
description |
International audience The catadromous European eel (Anguilla anguilla L.) undertakes a 6000-km spawning migration from its freshwater habitats to the Sargasso Sea. In large Blazka swim tunnels of 127 l, the physiological effect of such a prolonged swimming performance on sexual maturation in adult female eels was investigated. Two groups of eels were placed in swim tunnels for 173 days, one group was able to swim at 0.5 body lengths/second (Swim group) covering a distance of c. 5500-km over the experimental period, and one group kept in static (End Control group). A control group was sampled at the start of the experiment in order to determine the initial stage of reproductive development (Initial Control group). At the end of the swim trial, the maturation parameters 11-ketotestosterone, pituitary levels of LH and plasma levels of estradiol were higher (although not significantly) in the Swim compared to the End Control group. In addition, no significant differences were observed in most measured morphometric and reproductive parameters, including eye-index, gonadosomatic index, hepatosomatic index, and plasma levels of vitellogenin, cortisol and melanophore-stimulating hormone (MSH). Also, pituitary levels of both MSH, and adrenocorticotropic hormone (ACTH) were unaffected. In contrast, the oocyte diameter was found to be significantly higher in the Swim compared to the End Control group. Based on these observations we conclude that a period of prolonged swimming might be a physiological stimulus necessary for the onset of maturation in the European eel. |
author2 |
Biologie des organismes marins et écosystèmes (BOME) Centre National de la Recherche Scientifique (CNRS)-Université Pierre et Marie Curie - Paris 6 (UPMC)-Muséum national d'Histoire naturelle (MNHN) |
format |
Article in Journal/Newspaper |
author |
Van Ginneken, V. Dufour, S. Sbaihi, M. Balm, P. Noorlander, K. De Bakker, M. Doornbos, J. Palstra, A. Antonissen, E. Mayer, I. Van Den Thillart, G. |
author_facet |
Van Ginneken, V. Dufour, S. Sbaihi, M. Balm, P. Noorlander, K. De Bakker, M. Doornbos, J. Palstra, A. Antonissen, E. Mayer, I. Van Den Thillart, G. |
author_sort |
Van Ginneken, V. |
title |
Does a 5500-km swim trial stimulate early sexual maturation in the European eel (Anguilla anguilla L.)? |
title_short |
Does a 5500-km swim trial stimulate early sexual maturation in the European eel (Anguilla anguilla L.)? |
title_full |
Does a 5500-km swim trial stimulate early sexual maturation in the European eel (Anguilla anguilla L.)? |
title_fullStr |
Does a 5500-km swim trial stimulate early sexual maturation in the European eel (Anguilla anguilla L.)? |
title_full_unstemmed |
Does a 5500-km swim trial stimulate early sexual maturation in the European eel (Anguilla anguilla L.)? |
title_sort |
does a 5500-km swim trial stimulate early sexual maturation in the european eel (anguilla anguilla l.)? |
publisher |
HAL CCSD |
publishDate |
2007 |
url |
https://hal.archives-ouvertes.fr/hal-00181006 https://doi.org/10.1016/j.cbpa.2007.03.021 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
ISSN: 1095-6433 Comparative Biochemistry and Physiology - Part A: Molecular and Integrative Physiology https://hal.archives-ouvertes.fr/hal-00181006 Comparative Biochemistry and Physiology - Part A: Molecular and Integrative Physiology, Elsevier, 2007, 147 (4), pp.1095-1103. ⟨10.1016/j.cbpa.2007.03.021⟩ |
op_relation |
info:eu-repo/semantics/altIdentifier/doi/10.1016/j.cbpa.2007.03.021 info:eu-repo/semantics/altIdentifier/pmid/17451986 hal-00181006 https://hal.archives-ouvertes.fr/hal-00181006 doi:10.1016/j.cbpa.2007.03.021 PUBMED: 17451986 |
op_doi |
https://doi.org/10.1016/j.cbpa.2007.03.021 |
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Comparative Biochemistry and Physiology Part A: Molecular & Integrative Physiology |
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147 |
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4 |
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