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Daily and seasonal movements of radio-tagged trout (Salmo trutta) in the Belgian Ardennes: mobility versus residency
Ovidio, Michaël
1996Fifth European Conference on Wildlife Telemetry
 

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Keywords :
Mobility; Behavioural Ecology; Morphotype; Ecotype; Salmo trutta; Radio-tracking
Abstract :
[en] This study describes the mobility patterns of two trout (Salmo trutta L.) of different morphotypes (one typical brown trout and one intermediate between the sea and brown trout) telemetred during 172 consecutive days in the River Meuse Basin (Belgian Ardennes). The two trout behaved quite differently. The typical brown trout showed little mobility (home range < 1.1 km and longest net daily journey of 850 m) and a constant fidelity to a main area. The other trout was highly mobile (home range extending over 46 km, with net daily journeys as long as 14 km) with no apparent attachment to any particular residence. These results further question the colloquial belief that all freshwater trout are resident fish and support the idea that different ecotypes (i.e. stream and large river trout) would coexist in the same hydroecosystem. Due to small sample size, it is not permitted to affirm that these ecotypes would be associated to different morphotypes.
Disciplines :
Zoology
Author, co-author :
Ovidio, Michaël  ;  Université de Liège - ULiège > Laboratoire de Démographie des Poissons et d'Hydroécologie (LDPH)
Language :
English
Title :
Daily and seasonal movements of radio-tagged trout (Salmo trutta) in the Belgian Ardennes: mobility versus residency
Publication date :
August 1996
Event name :
Fifth European Conference on Wildlife Telemetry
Event place :
Strasbourg, France
Event date :
du 25 au 30 août 1996
Audience :
International
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since 15 April 2011

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