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J Fish Biol. 2012 May;80(6):2384-9. doi: 10.1111/j.1095-8649.2012.03284.x.

Visibility conditions and diel period affect small-scale spatio-temporal behaviour of pike Esox lucius in the absence of prey and conspecifics.

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1
National Institute of Aquatic Resources (DTU-Aqua), Technical University of Denmark, Vejlsøvej 39, DK-8600 Silkeborg, Denmark. anders.nilsson@biol.lu.se

Abstract

Pike Esox lucius in the absence of prey and conspecifics were shown to have the highest habitat-change activity during dusk and to decrease preference for complex habitats in turbid water. As the behaviours indicate routine responses in the absence of behavioural interactions, E. lucius spatio-temporal distributions should be directly affected and thereby more easily assessed and avoided by prey, with potential consequences for encounter rates.

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