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Journal of Plankton Research Vol.25 no.5 pp.565-571, 2003
© Oxford University Press 2003
SHORT COMMUNICATION |
Proximate causes for anti-predatory feeding suppression by zooplankton during the day: reduction of contrast or motioningestion or clearance?
University Of Oslo, Department Of Biology, Po Box 1064, Blindern, N-0316 Oslo, Norway
* Corresponding Author: thomas.torgersen{at}ifm.uib.no
1 Present Address: University Of Bergen, Department Of Fisheries And Marine Biology, Po Box 7800, N-5020 Bergen, Norway
A literature survey suggests that contrary to other groups, large, oceanic zooplankton display no diurnal reduction in feeding effort at low food concentrations. I explain this with their visual predators indifference to prey motion for encounter and perception.