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Diet and prey size spectrum of pikeperch in lakes in central Finland

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The stomach content of pikeperch Sander lucioperca was studied in 24 lakes in central Finland. The most important prey species was smelt Osmerus eperlanus then perch Perca fluviatilis. The proportion of cyprinids as prey increased with pikeperch total length (LT) and lake phosphorus content. Prey LT and pikeperch LT correlated positively, but the prey‐to‐predator size ratio correlated negatively with pikeperch LT.

Keywords: diet; phosphorus; pikeperch; prey length

Document Type: Research Article


Affiliations: Department of Biological and Environmental Science, University of Jyväskylä, P. O. Box 35, FI-40351 Jyväskylä, Finland

Publication date: 2004-10-01

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