A telemetry study on the diurnal distribution and activity of adult pikeperch, Sander lucioperca (L.), in a riverine environment |
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Authors: | Pavel Horky Ondej Slavík and Ludk Barto |
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Institution: | (1) T G M – Water Research Institute, Podbabská 30, 160 62 Prague 6, Czech Republic;(2) University of South Bohemia, Ceske Budejovice, Research Institute of Fish Culture and Hydrobiology, Vodnany, Czech Republic;(3) Institute of Animal Production, Ethology Group, 104 00 Prague 10 - Uhrineves, Czech Republic |
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Abstract: | The diurnal movements and spatial distribution of adult pikeperch, Sander lucioperca, in the Elbe River, Czech Republic was observed using radio telemetry. The hypothesis that light intensity, within four different
intervals (dawn, day, dusk, night), would determine the spatial distribution of pikeperch in a riverine environment were tested
across a time span of 12 months. During the day, fish were located in deep water of the main channel, moving towards shallower
waters during twilight and residing in the littoral zone, closest to the riverbanks, at night. Movement activity followed
the behavioural pattern in a drainage canal with maximum at twilight and minimum at night. This suggests that nocturnal positions
of adult pikeperch in the shallows were not associated with hunting but more likely with resting.
Handling editor: J. Cambray |
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Keywords: | Predator Behaviour Habitat shift Telemetry |
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