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Prey selection for the exotic cladoceran Bythotrephes cederstroemi by selected Lake Erie fishes

Journal of Great Lakes Research

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Abstract

The importance of zooplankton in the diet of yellow perch (Perca flavescens), white perch (Morone americana), walleyes (Stizostedion vitreum vitreum), and white bass (M. chrysops) was assessed in the central basin of Lake Erie in 1985-1988. Zooplankton were collected by vertical hauls in 1987-1988 and fish with a rock-hopper trawl. Although copepods (calanoid and cyclopoid) were the major zooplankton in the plankton samples, they were not well represented in the fish diet. From 1985 through 1988, Cladocera became an increasingly important food - particularly a recent invader from Europe, Bythotrephes cederstroemi. It was a major component in the diet of yellow perch from June to October in both 1987 and 1988. The zooplankton consumption by white perch was more diverse until September, when B. cederstroemi became the major food item.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Prey selection for the exotic cladoceran Bythotrephes cederstroemi by selected Lake Erie fishes
Series title:
Journal of Great Lakes Research
Volume
17
Issue:
1
Year Published:
1991
Language:
English
Contributing office(s):
Great Lakes Science Center
Description:
p. 85-93
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
Journal of Great Lakes Research
First page:
85
Last page:
93
Number of Pages:
8