Role of glass eel salinity preference in the control of habitat selection and growth plasticity in Anguilla anguilla
Eels colonize either marine, estuarine or freshwater habitats, with marine and estuarine eels tending to grow faster than freshwater eels. The reasons for these divergent migratory tactics and growth trajectories remain poorly understood. In order to investigate the role of salinity preferences of g...
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ftcemoa:oai:irsteadoc.irstea.fr:PUB00018091 2023-05-15T13:27:01+02:00 Role of glass eel salinity preference in the control of habitat selection and growth plasticity in Anguilla anguilla Edeline, E. Dufour, S. Elie, P. CEMAGREF BORDEAUX EPBX MUSEUM NATIONAL D'HISTOIRE NATURELLE PARIS 2005 application/pdf https://irsteadoc.irstea.fr/cemoa/PUB00018091 Anglais eng https://irsteadoc.irstea.fr/cemoa/PUB00018091 Date de dépôt: 2005-12-13 - 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). 15440 ANGUILLA ANGUILLA HABITAT CROISSANCE ANIMALE SALINITE COMPORTEMENT ANIMAL HABITATS SALINITY ANIMAL BEHAVIOUR Article de revue scientifique à comité de lecture 2005 ftcemoa 2021-06-29T08:41:31Z Eels colonize either marine, estuarine or freshwater habitats, with marine and estuarine eels tending to grow faster than freshwater eels. The reasons for these divergent migratory tactics and growth trajectories remain poorly understood. In order to investigate the role of salinity preferences of glass eels in the control of habitat selection and growth plasticity, we sorted different contingents of glass eels Anguilla anguilla through 2 consecutive salinity preference tests. This allowed us to study the link between salinity preference and locomotor activity (i.e. positive rheotaxis), and to distinguish contingents of glass eels that were either plastic or fixed in their preference for freshwater (FW) or saltwater (SW). Subsequently, we monitored somatic growth of the different contingents in controlled SW and FW rearing conditions. Preference for FW was linked to high locomotor activity, a behavioral pattern likely to promote colonization of FW habitats in the wild. Accordingly, FWC (FW contingent, i.e. glass eels that preferred FW twice) exhibited poor growth, similar to those observed in wild FW eel populations. In contrast, preference for SW was linked to low locomotor activity, and the SWC (SW contingent, i.e. glass eels that preferred SW twice) had high growth rates in SW, as observed in wild marine and estuarine populations. The PCC (plastic contingent, i.e. glass eels that swappped their salinity preference) had an intermediary growth status that could be related to the nomad' life style of eels migrating between different habitat types during their life. Growth was significantly higher in SW compared to FW in all contingents, indicating that habitat salinity may directly affect growth, irrespective of food availability. Our results demonstrated that glass eel salinity preference was linked to their locomotor activity and growth performance, and provided a comprehensive ecological mechanism for the control of habitat distribution and growth patterns observed in wild eel populations. Article in Journal/Newspaper Anguilla anguilla Irstea Publications et Bases documentaires (Irstea@doc/CemOA) |
institution |
Open Polar |
collection |
Irstea Publications et Bases documentaires (Irstea@doc/CemOA) |
op_collection_id |
ftcemoa |
language |
English |
topic |
ANGUILLA ANGUILLA HABITAT CROISSANCE ANIMALE SALINITE COMPORTEMENT ANIMAL HABITATS SALINITY ANIMAL BEHAVIOUR |
spellingShingle |
ANGUILLA ANGUILLA HABITAT CROISSANCE ANIMALE SALINITE COMPORTEMENT ANIMAL HABITATS SALINITY ANIMAL BEHAVIOUR Edeline, E. Dufour, S. Elie, P. Role of glass eel salinity preference in the control of habitat selection and growth plasticity in Anguilla anguilla |
topic_facet |
ANGUILLA ANGUILLA HABITAT CROISSANCE ANIMALE SALINITE COMPORTEMENT ANIMAL HABITATS SALINITY ANIMAL BEHAVIOUR |
description |
Eels colonize either marine, estuarine or freshwater habitats, with marine and estuarine eels tending to grow faster than freshwater eels. The reasons for these divergent migratory tactics and growth trajectories remain poorly understood. In order to investigate the role of salinity preferences of glass eels in the control of habitat selection and growth plasticity, we sorted different contingents of glass eels Anguilla anguilla through 2 consecutive salinity preference tests. This allowed us to study the link between salinity preference and locomotor activity (i.e. positive rheotaxis), and to distinguish contingents of glass eels that were either plastic or fixed in their preference for freshwater (FW) or saltwater (SW). Subsequently, we monitored somatic growth of the different contingents in controlled SW and FW rearing conditions. Preference for FW was linked to high locomotor activity, a behavioral pattern likely to promote colonization of FW habitats in the wild. Accordingly, FWC (FW contingent, i.e. glass eels that preferred FW twice) exhibited poor growth, similar to those observed in wild FW eel populations. In contrast, preference for SW was linked to low locomotor activity, and the SWC (SW contingent, i.e. glass eels that preferred SW twice) had high growth rates in SW, as observed in wild marine and estuarine populations. The PCC (plastic contingent, i.e. glass eels that swappped their salinity preference) had an intermediary growth status that could be related to the nomad' life style of eels migrating between different habitat types during their life. Growth was significantly higher in SW compared to FW in all contingents, indicating that habitat salinity may directly affect growth, irrespective of food availability. Our results demonstrated that glass eel salinity preference was linked to their locomotor activity and growth performance, and provided a comprehensive ecological mechanism for the control of habitat distribution and growth patterns observed in wild eel populations. |
author2 |
CEMAGREF BORDEAUX EPBX MUSEUM NATIONAL D'HISTOIRE NATURELLE PARIS |
format |
Article in Journal/Newspaper |
author |
Edeline, E. Dufour, S. Elie, P. |
author_facet |
Edeline, E. Dufour, S. Elie, P. |
author_sort |
Edeline, E. |
title |
Role of glass eel salinity preference in the control of habitat selection and growth plasticity in Anguilla anguilla |
title_short |
Role of glass eel salinity preference in the control of habitat selection and growth plasticity in Anguilla anguilla |
title_full |
Role of glass eel salinity preference in the control of habitat selection and growth plasticity in Anguilla anguilla |
title_fullStr |
Role of glass eel salinity preference in the control of habitat selection and growth plasticity in Anguilla anguilla |
title_full_unstemmed |
Role of glass eel salinity preference in the control of habitat selection and growth plasticity in Anguilla anguilla |
title_sort |
role of glass eel salinity preference in the control of habitat selection and growth plasticity in anguilla anguilla |
publishDate |
2005 |
url |
https://irsteadoc.irstea.fr/cemoa/PUB00018091 |
genre |
Anguilla anguilla |
genre_facet |
Anguilla anguilla |
op_source |
15440 |
op_relation |
https://irsteadoc.irstea.fr/cemoa/PUB00018091 |
op_rights |
Date de dépôt: 2005-12-13 - 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). |
_version_ |
1766395888197959680 |