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Seasonal activities of female barbel Barbus barbus (L.) in the River Ourthe (Southern Belgium), as revealed by radio tracking

Published online by Cambridge University Press:  15 October 1990

Etienne Baras  and
Benoît Cherry
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Abstract

Two female barbel Rarbus barbus (L.) were tagged with implantable radio transmitters and tracked in the Ourthe River (Southern Belgium) from April 12th to July 7th, 1989 to study their movements and activity rhythms during the spring-summer period. Both barbels defined a 1.6 km home range and occupied four residence areas. Greatest average daily movements within the home range limits occurred during the prespawning and spawning periods and were associated with variations of mean daily water temperature and level. Barbel 2 made a 9.6 km excursion from its spring home range and homed a week later in its residence area. Barbels displayed dusk and dawn activity patterns, character- ized by the occupation of riffle areas. The activity timing was found to be dependent on water temperature while the size of daily activity area was more influenced by river flow conditions.

Keywords

BarbusCyprinidaeradio trackingactivity rhythmsspawning periodhomingBarbusCyprinidaeradio-pistagerythmes d'activitéspériode de fraihoming
Type
Research Article
Information
Aquatic Living Resources , Volume 3 , Issue 4 , October 1990 , pp. 283 - 294
Copyright
© IFREMER-Gauthier-Villars, 1990

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