Swimming activity and behaviour of european Anguilla anguilla glass eels in response to photoperiod and flow reversal and the role of energy status
International audience To better understand migratory divergences among Anguilla anguilla glass eels, the behaviour of individuals caught at the time of their estuary entrance was studied through their response to a light:dark cycle and then to both water current reversal and light: dark cycle. In a...
Main Authors: | , , |
---|---|
Other Authors: | , , |
Format: | Article in Journal/Newspaper |
Language: | English |
Published: |
HAL CCSD
2009
|
Subjects: | |
Online Access: | https://hal.inrae.fr/hal-02592910 |
id |
ftccsdartic:oai:HAL:hal-02592910v1 |
---|---|
record_format |
openpolar |
spelling |
ftccsdartic:oai:HAL:hal-02592910v1 2023-05-15T13:26:57+02:00 Swimming activity and behaviour of european Anguilla anguilla glass eels in response to photoperiod and flow reversal and the role of energy status Bureau Du Colombier, Sarah Bolliet, Valérie Bardonnet, Agnes Ecosystèmes estuariens et poissons migrateurs amphihalins (UR EPBX) Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF) Institut National de la Recherche Agronomique (INRA) 2009 https://hal.inrae.fr/hal-02592910 en eng HAL CCSD Wiley hal-02592910 https://hal.inrae.fr/hal-02592910 IRSTEA: PUB00028257 ISSN: 0022-1112 EISSN: 1095-8649 Journal of Fish Biology https://hal.inrae.fr/hal-02592910 Journal of Fish Biology, Wiley, 2009, 74, pp.2002-2013 [SDE]Environmental Sciences info:eu-repo/semantics/article Journal articles 2009 ftccsdartic 2021-11-21T00:51:17Z International audience To better understand migratory divergences among Anguilla anguilla glass eels, the behaviour of individuals caught at the time of their estuary entrance was studied through their response to a light:dark cycle and then to both water current reversal and light: dark cycle. In a first experiment, fish moving with the flow in response to dusk (M+ fish) and fish that had not exhibited any movement (M− fish) were distinguished. Anguilla anguilla from these two groups were then individually marked and their response to water current reversal compared. M+ individuals mainly exhibited negative rheotaxis with a tidal periodicity, whereas positive rheotaxis was mainly exhibited by M− individuals. Thus, M+ A. anguilla glass eels showing negative rheotaxis appear to have the strongest propensity to migrate, the converse applies to M− ones showing positive rheotaxis. A small percentage of individuals (5%) were hyperactive, alternately swimming with and against the current with almost no resting phase. These fish lost c. 2 mg wet mass day−1, whereas individuals which were almost inactive lost c. 1 mgday−1. Wet and dry mass changes in relation to activity levels were compared with previous experiments and it was concluded that A. anguilla glass eel energy status might be involved in differences in migratory tendencies but other factors that might be important are discussed. It is proposed that any decrease in A. anguilla glass eel energy stores associated with global warming might lead to an increase in the proportion of sedentary individuals and thus be involved in the decrease in the recruitment to freshwater habitats. Article in Journal/Newspaper Anguilla anguilla Archive ouverte HAL (Hyper Article en Ligne, CCSD - Centre pour la Communication Scientifique Directe) |
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 |
[SDE]Environmental Sciences |
spellingShingle |
[SDE]Environmental Sciences Bureau Du Colombier, Sarah Bolliet, Valérie Bardonnet, Agnes Swimming activity and behaviour of european Anguilla anguilla glass eels in response to photoperiod and flow reversal and the role of energy status |
topic_facet |
[SDE]Environmental Sciences |
description |
International audience To better understand migratory divergences among Anguilla anguilla glass eels, the behaviour of individuals caught at the time of their estuary entrance was studied through their response to a light:dark cycle and then to both water current reversal and light: dark cycle. In a first experiment, fish moving with the flow in response to dusk (M+ fish) and fish that had not exhibited any movement (M− fish) were distinguished. Anguilla anguilla from these two groups were then individually marked and their response to water current reversal compared. M+ individuals mainly exhibited negative rheotaxis with a tidal periodicity, whereas positive rheotaxis was mainly exhibited by M− individuals. Thus, M+ A. anguilla glass eels showing negative rheotaxis appear to have the strongest propensity to migrate, the converse applies to M− ones showing positive rheotaxis. A small percentage of individuals (5%) were hyperactive, alternately swimming with and against the current with almost no resting phase. These fish lost c. 2 mg wet mass day−1, whereas individuals which were almost inactive lost c. 1 mgday−1. Wet and dry mass changes in relation to activity levels were compared with previous experiments and it was concluded that A. anguilla glass eel energy status might be involved in differences in migratory tendencies but other factors that might be important are discussed. It is proposed that any decrease in A. anguilla glass eel energy stores associated with global warming might lead to an increase in the proportion of sedentary individuals and thus be involved in the decrease in the recruitment to freshwater habitats. |
author2 |
Ecosystèmes estuariens et poissons migrateurs amphihalins (UR EPBX) Centre national du machinisme agricole, du génie rural, des eaux et forêts (CEMAGREF) Institut National de la Recherche Agronomique (INRA) |
format |
Article in Journal/Newspaper |
author |
Bureau Du Colombier, Sarah Bolliet, Valérie Bardonnet, Agnes |
author_facet |
Bureau Du Colombier, Sarah Bolliet, Valérie Bardonnet, Agnes |
author_sort |
Bureau Du Colombier, Sarah |
title |
Swimming activity and behaviour of european Anguilla anguilla glass eels in response to photoperiod and flow reversal and the role of energy status |
title_short |
Swimming activity and behaviour of european Anguilla anguilla glass eels in response to photoperiod and flow reversal and the role of energy status |
title_full |
Swimming activity and behaviour of european Anguilla anguilla glass eels in response to photoperiod and flow reversal and the role of energy status |
title_fullStr |
Swimming activity and behaviour of european Anguilla anguilla glass eels in response to photoperiod and flow reversal and the role of energy status |
title_full_unstemmed |
Swimming activity and behaviour of european Anguilla anguilla glass eels in response to photoperiod and flow reversal and the role of energy status |
title_sort |
swimming activity and behaviour of european anguilla anguilla glass eels in response to photoperiod and flow reversal and the role of energy status |
publisher |
HAL CCSD |
publishDate |
2009 |
url |
https://hal.inrae.fr/hal-02592910 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
ISSN: 0022-1112 EISSN: 1095-8649 Journal of Fish Biology https://hal.inrae.fr/hal-02592910 Journal of Fish Biology, Wiley, 2009, 74, pp.2002-2013 |
op_relation |
hal-02592910 https://hal.inrae.fr/hal-02592910 IRSTEA: PUB00028257 |
_version_ |
1766395540667367424 |