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Food of white perch, rock bass and yellow perch in eastern Lake Ontario

New York Fish and Game Journal

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Abstract

The contents of stomachs from 1,485 white perch, 218 rock bass and 1,399 yellow perch collected in eastern Lake Ontario from May to October in 1972 and in May 1973 were examined. All three species fed primarily on amphipods, but they also ate chironomids and trichopterans regularly. Rock bass ate more trichopterans than chironomids, whereas white perch and yellow perch ate more chironomids. Snails and crayfish were significant items in the diet of rock bass, but occurred infrequently in stomachs of white perch and yellow perch. White perch and yellow perch frequently ate fish eggs during early summer, but rock bass seldom ate fish eggs. Fish were important in the diets of white perch longer than 300 millimeters and rock bass and yellow perch longer than 200 millimeters. Similarities in the diets of fish 1 year old or older suggest that the potential for competition between white perch and yellow perch is greater than that between rock bass and either white perch or yellow perch.

Additional Publication Details

Publication type:
Article
Publication Subtype:
Journal Article
Title:
Food of white perch, rock bass and yellow perch in eastern Lake Ontario
Series title:
New York Fish and Game Journal
Volume
28
Issue:
2
Year Published:
1981
Language:
English
Contributing office(s):
Great Lakes Science Center
Description:
p. 191-201
Larger Work Type:
Article
Larger Work Subtype:
Journal Article
Larger Work Title:
New York Fish and Game Journal
First page:
191
Last page:
201
Number of Pages:
10