Enhancement of the phototactic reaction in Daphnia hyalina by a chemical mediated by juvenile perch (Perca fluviatilis)
- 1 January 1991
- journal article
- research article
- Published by Oxford University Press (OUP) in Journal of Plankton Research
- Vol. 13 (1) , 17-25
- https://doi.org/10.1093/plankt/13.1.17
Abstract
Experiments with Daphnia hyalina demonstrated that the phototactic reaction to changes in light intensity is strongly enhanced in the presence of a chemical substance mediated by juvenile perch. In constant light intensity, the daphnids were found close to the bottom of the experimental aquarium. The phenomenon may result in a diel vertical migration. This would decrease predation pressure near the surface.Keywords
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