Article (Scientific journals)
European silver eel (Anguilla anguilla L.) migration behaviour in a highly regulated shipping canal
Verhelst, Pieterjan; Bayens, Raf; Reubens, Jan et al.
2018In Fisheries Research, 206, p. 176-184
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Keywords :
Diadromous; Canal; Migration; Water regulation; shipping locks
Abstract :
[en] Among the many man-made structures that facilitate shipping, navigable canals take an important position. These canals may offer energetically favourable migration routes for diadromous fish, but they may also obstruct fish migration, for instance at shipping locks. Because the use of shipping canals by, and their effects on, mi- grating fish remain unknown, we assessed whether these canals can play a significant role in the migration of the critically endangered European eel. Only one third of 70 acoustically tagged silver eels completed migration through a shipping canal, and did so at a very low pace (average < 0.06 m s−1) due to delays at shipping locks and most likely also due to the disruption of water flow. These delays may come at an energetic cost, hampering the chances of successful migration. Knowledge on the impact of shipping canals on diadromous fish is crucial for proper management regulations. For instance, the observation that eels mostly migrated at night and during spring and autumn can support water managers to define adequate measures to improve eel migration in shipping canals.
Research Center/Unit :
FOCUS - Freshwater and OCeanic science Unit of reSearch - ULiège
AFFISH-RC - Applied and Fundamental FISH Research Center - ULiège
Disciplines :
Environmental sciences & ecology
Author, co-author :
Verhelst, Pieterjan
Bayens, Raf;  Research Institute for Nature and Forest (INBO)
Reubens, Jan;  Flanders Marine Institute
Benitez, Jean-Philippe  ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Laboratoire de Démographie des poissons et hydroécologie
Coeck, Johan;  Research Institute for Nature and Forest (INBO)
Goethals, Peter;  Ghent University
Ovidio, Michaël  ;  Université de Liège - ULiège > Département de Biologie, Ecologie et Evolution > Laboratoire de Démographie des poissons et hydroécologie
Vergeynst, Jenna;  Ghent University
Moens, Tom;  Ghent University
Mouton, Ans;  Research Institute for Nature and Forest (INBO)
Language :
English
Title :
European silver eel (Anguilla anguilla L.) migration behaviour in a highly regulated shipping canal
Publication date :
October 2018
Journal title :
Fisheries Research
ISSN :
0165-7836
Publisher :
Elsevier, Netherlands
Volume :
206
Pages :
176-184
Peer reviewed :
Peer Reviewed verified by ORBi
Available on ORBi :
since 28 May 2018

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