[en] Adult roach Rutilus rutilus (L.) (N = 24; 19.9-36.1 cm FL) from three highly fragmented Belgian rivers were tagged with surgically implanted radio transmitters. Their seasonal movements were observed from March to August 2004 (circum reproduction period) in river stretches delimited by two physical barriers. In the three rivers, roach displayed similar patterns of movements which were mainly influenced by the date of observation (movements increased in late April-May) and water temperature (travel distances were more important when water temperature ranged between 10 degrees C and 14 degrees C). Roach sometimes cleared physical obstacles. The mean distances travelled in each river were relatively short (max. 2.5 km) and mainly influenced by the length of the study reach, which was delimited by physical barriers.
Disciplines :
Aquatic sciences & oceanology
Author, co-author :
Geeraerts, Caroline
Ovidio, Michaël ; Université de Liège - ULiège > Biologie du comportement - Ethologie et psychologie animale
Verbiest, Hilde
Buysse, David
Coeck, Johan
Belpaire, Claude
Philippart, Jean-Claude ; Université de Liège - ULiège > Département des sciences et gestion de l'environnement > Biologie du comportement - Ethologie et psychologie animale
Language :
English
Title :
Mobility of individual roach Rutilus rutilus (L.) in three weir-fragmented Belgian rivers
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