Article (Scientific journals)
Short-term responses of glass eels transported from UK to small Belgian streams
Ovidio, Michaël; Tarrago-Bes, Frédérique; Nzau Matondo, Billy
2015In Annales de Limnologie, 51 (3), p. 219-226
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Keywords :
Glass eels; restocking; growth; dispersion; habitat; Streams
Abstract :
[en] Restocking of inland waters with glass eels is one of the recovery options to prevent the decline of European eel Anguilla anguilla (L.) populations. We studied the growth, dispersion, density and habitat preferences in the imported glass eels from United-Kingdom and stocked in three typologically different small Belgian streams, using electrofishing surveys around the single release point, 1 year following stocking. Our results clearly support that the recaptured individuals stocked in our streams farther from the sea, survived, grew, dispersed upstream and downstream. Elvers exploited the complete transversal section of stream, with preference for the sheltered microhabitats near the banks with slower water velocity and low depth. Length-weight relationship was different between streams in terms of allometric coefficient (b). We assume that microhabitats and food availabilities lead to contrasted results in terms of growth and absolute occurrence. Restocking of glass eels in small middle-land streams was found to be an interesting and unconventional option that requires adequate stream and habitat selection.
Research Center/Unit :
AFFISH-RC - Applied and Fundamental FISH Research Center - ULiège
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
Ovidio, Michaël  ;  Université de Liège > Département de Biologie, Ecologie et Evolution > Laboratoire de Démographie des poissons et hydroécologie
Tarrago-Bes, Frédérique
Nzau Matondo, Billy  ;  Université de Liège > Département de Biologie, Ecologie et Evolution > Laboratoire de Démographie des poissons et hydroécologie
Language :
English
Title :
Short-term responses of glass eels transported from UK to small Belgian streams
Publication date :
August 2015
Journal title :
Annales de Limnologie
ISSN :
0003-4088
eISSN :
2100-000X
Publisher :
EDP Sciences, Les Ulis Cedex A, France
Volume :
51
Issue :
3
Pages :
219-226
Peer reviewed :
Peer Reviewed verified by ORBi
Funders :
FEAMP - Fonds Européen pour les Affaires Maritimes et la Pêche
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