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Diet and prey size spectrum of pikeperch in lakes in central Finland
Author(s) -
Keskinen T.,
Marjomäki T. J.
Publication year - 2004
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/j.0022-1112.2004.00500.x
Subject(s) - perch , predation , biology , smelt , predator , fishery , fish <actinopterygii> , ecology , zoology
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 ( L T ) and lake phosphorus content. Prey L T and pikeperch L T correlated positively, but the prey‐to‐predator size ratio correlated negatively with pikeperch L T .