Experimental studies on thermal behaviour and diurnal activity rhythms of juvenile European sturgeon (Acipenser sturio)
Identifieur interne : 001697 ( Main/Exploration ); précédent : 001696; suivant : 001698Experimental studies on thermal behaviour and diurnal activity rhythms of juvenile European sturgeon (Acipenser sturio)
Auteurs : G. Staaks [Allemagne] ; F. Kirschbaum [Allemagne] ; Patrick Williot [France]Source :
- Journal of Applied Ichthyology [ 0175-8659 ] ; 1999-09.
Abstract
Experiments were performed to determine the temperature preference of juvenile sturgeons. The biorhythms of activity and the location of fish in a thermal gradient of an electronic shuttlebox were registered. The fish showed dominant 24 h activity rhythms with its maximum at the nighttime. A temperature preference range or an active thermoregulatory behavior could not be demonstrated by our experiments. The behavior of sturgeons was influenced by temperature: activity and swimming speed were positively correlated to rising temperatures. There are indications that the fish could have been attracted by low light intensities at night.
Url:
DOI: 10.1111/j.1439-0426.1999.tb00243.x
Affiliations:
- Allemagne, France
- Aquitaine, Berlin, Nouvelle-Aquitaine
- Berlin, Bordeaux, Cestas
- Cemagref - centre de Bordeaux, Centre national du machinisme agricole, du génie rural, des eaux et des forêts, Institut national de recherche en sciences et technologies pour l'environnement et l'agriculture
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The biorhythms of activity and the location of fish in a thermal gradient of an electronic shuttlebox were registered. The fish showed dominant 24 h activity rhythms with its maximum at the nighttime. A temperature preference range or an active thermoregulatory behavior could not be demonstrated by our experiments. The behavior of sturgeons was influenced by temperature: activity and swimming speed were positively correlated to rising temperatures. 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Kirschbaum</name></country><country name="France"><region name="Nouvelle-Aquitaine"><name sortKey="Williot, P" sort="Williot, P" uniqKey="Williot P" first="P." last="Williot">Patrick Williot</name></region></country></tree></affiliations></record>Pour manipuler ce document sous Unix (Dilib)
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