Mobility of individual roach Rutilus rutilus (L.) in three weir-fragmented Belgian rivers

Caroline Geeraerts, M Ovidio, Hilde Verbiest, David Buysse, Johan Coeck, Claude Belpaire, J. C Philippart

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    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°C and 14°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.
    Original languageEnglish
    Issue number1
    Pages (from-to)143-153
    Number of pages11
    Publication statusPublished - 2007

    Thematic list

    • Water management

    EWI Biomedical sciences

    • B280-animal-ecology

    Taxonomic list

    • fishes (Pisces)


    • aquatic management
    • fisheries policy

    Geographic list

    • Flanders


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