Is feeding behaviour related to glass eel propensity to migrate?
Several studies showed that eel diadromy is facultative and that migratory divergences appear during glass eel estuarine migration. Origin of the differences in migratory behaviour among glass eels remains unclear but first evidence support the role of individual energetic and thyroidal status. Even...
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Language: | English |
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2008
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ftcemoa:oai:irsteadoc.irstea.fr:PUB00025335 2023-05-15T13:27:49+02:00 Is feeding behaviour related to glass eel propensity to migrate? Bureau Du Colombier, S. Lambert, P. Bardonnet, A. CEMAGREF BORDEAUX EPBX INRA SAINT PEE SUR NIVELLE 2008 application/pdf https://irsteadoc.irstea.fr/cemoa/PUB00025335 Anglais eng http://dx.doi.org/10.1016/j.ecss.2008.08.015 https://irsteadoc.irstea.fr/cemoa/PUB00025335 Date de dépôt: 2009-01-07 - Tous les documents et informations contenus dans la base CemOA Publications sont protégés en vertu du droit de propriété intellectuelle, en particulier par le droit d'auteur. La personne consultant la base CemOA Publications peut visualiser, reproduire, ou stocker des copies des publications, à condition que l'information soit seulement pour son usage personnel et non commercial. L'utilisation des travaux universitaires est soumise à autorisation préalable de leurs auteurs. Toute information relative au signalement d'une publication contenue dans CemOA Publications doit inclure la citation bibliographique usuelle : Nom du ou des auteurs, titre et source du document, date et URL de la notice (dc_identifier). 21091 ANGUILLA ANGUILLA ALIMENTATION COMPORTEMENT ANIMAL PHYSIOLOGIE DYNAMIQUE DE POPULATION CIVELLE MIGRATION ANADROME ENERGIE EXPERIMENTATION FEEDING ANIMAL BEHAVIOUR PHYSIOLOGY EELS ENERGY POPULATION DYNAMICS Article de revue scientifique à comité de lecture 2008 ftcemoa https://doi.org/10.1016/j.ecss.2008.08.015 2021-06-29T09:11:53Z Several studies showed that eel diadromy is facultative and that migratory divergences appear during glass eel estuarine migration. Origin of the differences in migratory behaviour among glass eels remains unclear but first evidence support the role of individual energetic and thyroidal status. Even if starvation usually is associated to glass eel migration, feeding seems to occur in certain glass eels. The aim of the present study was to investigate feeding behaviour and glass eel growth in relation to propensity to migrate. Feeding rate and weight gain were higher in M+ fish (fish having a high propensity to migrate) than in M- fish (fish having a low propensity to migrate) in fed glass eels, whereas no clear difference in the variation in body weight was observed among unfed fish (controls). M- fish had initially lower percent dry weight than M+ fish, which suggests a link between feeding motivation, propensity to migrate, and energy content. We hypothesise that differences in feeding behaviour in glass eels are linked to hormonal control which would also influence differences in energy content observed in individuals showing migratory divergences. Better understanding of migratory divergences in eels might help to properly evaluate and manage eel stocks. Article in Journal/Newspaper Anguilla anguilla Irstea Publications et Bases documentaires (Irstea@doc/CemOA) Estuarine, Coastal and Shelf Science 80 3 323 329 |
institution |
Open Polar |
collection |
Irstea Publications et Bases documentaires (Irstea@doc/CemOA) |
op_collection_id |
ftcemoa |
language |
English |
topic |
ANGUILLA ANGUILLA ALIMENTATION COMPORTEMENT ANIMAL PHYSIOLOGIE DYNAMIQUE DE POPULATION CIVELLE MIGRATION ANADROME ENERGIE EXPERIMENTATION FEEDING ANIMAL BEHAVIOUR PHYSIOLOGY EELS ENERGY POPULATION DYNAMICS |
spellingShingle |
ANGUILLA ANGUILLA ALIMENTATION COMPORTEMENT ANIMAL PHYSIOLOGIE DYNAMIQUE DE POPULATION CIVELLE MIGRATION ANADROME ENERGIE EXPERIMENTATION FEEDING ANIMAL BEHAVIOUR PHYSIOLOGY EELS ENERGY POPULATION DYNAMICS Bureau Du Colombier, S. Lambert, P. Bardonnet, A. Is feeding behaviour related to glass eel propensity to migrate? |
topic_facet |
ANGUILLA ANGUILLA ALIMENTATION COMPORTEMENT ANIMAL PHYSIOLOGIE DYNAMIQUE DE POPULATION CIVELLE MIGRATION ANADROME ENERGIE EXPERIMENTATION FEEDING ANIMAL BEHAVIOUR PHYSIOLOGY EELS ENERGY POPULATION DYNAMICS |
description |
Several studies showed that eel diadromy is facultative and that migratory divergences appear during glass eel estuarine migration. Origin of the differences in migratory behaviour among glass eels remains unclear but first evidence support the role of individual energetic and thyroidal status. Even if starvation usually is associated to glass eel migration, feeding seems to occur in certain glass eels. The aim of the present study was to investigate feeding behaviour and glass eel growth in relation to propensity to migrate. Feeding rate and weight gain were higher in M+ fish (fish having a high propensity to migrate) than in M- fish (fish having a low propensity to migrate) in fed glass eels, whereas no clear difference in the variation in body weight was observed among unfed fish (controls). M- fish had initially lower percent dry weight than M+ fish, which suggests a link between feeding motivation, propensity to migrate, and energy content. We hypothesise that differences in feeding behaviour in glass eels are linked to hormonal control which would also influence differences in energy content observed in individuals showing migratory divergences. Better understanding of migratory divergences in eels might help to properly evaluate and manage eel stocks. |
author2 |
CEMAGREF BORDEAUX EPBX INRA SAINT PEE SUR NIVELLE |
format |
Article in Journal/Newspaper |
author |
Bureau Du Colombier, S. Lambert, P. Bardonnet, A. |
author_facet |
Bureau Du Colombier, S. Lambert, P. Bardonnet, A. |
author_sort |
Bureau Du Colombier, S. |
title |
Is feeding behaviour related to glass eel propensity to migrate? |
title_short |
Is feeding behaviour related to glass eel propensity to migrate? |
title_full |
Is feeding behaviour related to glass eel propensity to migrate? |
title_fullStr |
Is feeding behaviour related to glass eel propensity to migrate? |
title_full_unstemmed |
Is feeding behaviour related to glass eel propensity to migrate? |
title_sort |
is feeding behaviour related to glass eel propensity to migrate? |
publishDate |
2008 |
url |
https://irsteadoc.irstea.fr/cemoa/PUB00025335 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
21091 |
op_relation |
http://dx.doi.org/10.1016/j.ecss.2008.08.015 https://irsteadoc.irstea.fr/cemoa/PUB00025335 |
op_rights |
Date de dépôt: 2009-01-07 - Tous les documents et informations contenus dans la base CemOA Publications sont protégés en vertu du droit de propriété intellectuelle, en particulier par le droit d'auteur. La personne consultant la base CemOA Publications peut visualiser, reproduire, ou stocker des copies des publications, à condition que l'information soit seulement pour son usage personnel et non commercial. L'utilisation des travaux universitaires est soumise à autorisation préalable de leurs auteurs. Toute information relative au signalement d'une publication contenue dans CemOA Publications doit inclure la citation bibliographique usuelle : Nom du ou des auteurs, titre et source du document, date et URL de la notice (dc_identifier). |
op_doi |
https://doi.org/10.1016/j.ecss.2008.08.015 |
container_title |
Estuarine, Coastal and Shelf Science |
container_volume |
80 |
container_issue |
3 |
container_start_page |
323 |
op_container_end_page |
329 |
_version_ |
1766400561300635648 |