A mechanism of predator-mediated induction of diel vertical migration in Daphnia hyalina
- 1 January 1991
- journal article
- Published by Oxford University Press (OUP) in Journal of Plankton Research
- Vol. 13 (1) , 83-89
- https://doi.org/10.1093/plankt/13.1.83
Abstract
Predator avoidance is generally thought to be the most important ultimate reason for diel vertical migration in zooplankton. Combining field observations and experimental results, it is shown, first, that a phototactic reaction to relative changes in light intensity is at the base of a diel vertical migration and, secondly, how this phototaxis is enhanced by a chemical mediated by juvenile perch.Keywords
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