Journal
JOURNAL OF FISH BIOLOGY
Volume 76, Issue 7, Pages 1729-1741Publisher
WILEY-BLACKWELL
DOI: 10.1111/j.1095-8649.2010.02612.x
Keywords
eutrophication; functional response; recruitment; sedimentation
Categories
Funding
- Great Lakes Fishery Commission
- National Science Foundation [EAR-0552552]
- The Ohio State University South Centers
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Laboratory experiments were conducted to determine how larval and juvenile yellow perch Perca flavescens respond to changes in prey density when exposed to different levels and types of turbidity (phytoplanktonic or sedimentary). Across prey densities, consumption by P. flavescens tended to be less in phytoplanktonic turbidity compared with sedimentary turbidity. For larvae, this effect was dependent on turbidity level (consumption differed between turbidity types only at high turbidity), while for juveniles the difference with turbidity type was equal across turbidity levels. These results suggest that phytoplankton blooms are detrimental to the ability of late season age 0 year P. flavescens to forage and support the need to control factors leading to excessive phytoplankton growth in lakes. (C) 2010 The Authors Journal compilation (C) 2010 The Fisheries Society of the British Isles
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