Boujard T
Laboratoire de Nutrition des poissons, Unité mixte INRA-IFREMER, INRA, Saint-Pée-Sur-Nivelle, France.
Physiol Behav. 1995 Oct;58(4):641-5. doi: 10.1016/0031-9384(95)00109-v.
The diel rhythms of feeding activity of S. glanis held singly or in groups, and with free or time-restricted access to self-feeders is described. It was found that this this species has a strongly nocturnal feeding activity. European catfish can be trained to feed itself by day, but in such case its voluntary feed intake is reduced. When trained to feed by day, they resume their nocturnal behavior in less than 24 h when they have again free access to feed. It is also clearly evidenced that this fish species does not behave the same way when it is isolated from its congeneres rather than when it is maintained in groups, with a tendency to become arhythmic.
描述了单独或成群饲养的六须鲶的摄食活动的昼夜节律，以及自由或限时使用自动喂食器的情况。发现该物种具有强烈的夜间摄食活动。欧洲鲶鱼可以被训练在白天自行进食，但在这种情况下其自愿摄食量会减少。当被训练在白天进食时，当它们再次可以自由进食时，它们会在不到24小时内恢复夜间行为。还清楚地证明，这种鱼类在与同类隔离时的行为与成群饲养时不同，有变得无节律的趋势。
