Food of young-of-the-year walleyes in Lake Erie
Fishery Bulletin
Out-of-print
By: David R. Wolfert
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Abstract
Stomach contents were examined for 794 young-of-the-year (0-group) walleyes (Stizostedion vitreum vitreum) captured by trawls at 17 locations in western Lake Erie in June-November 1962. Food organisms were found in 92.5 percent of the stomachs. Food varied with geographic location and season of capture, but within areas and seasons, selection for certain species and sizes of prey was strong. Walleyes from the extreme western end of Lake Erie fed primarily on gizzard shad and alewives during the summer and shifted to emerald shiners during the fall. The stomach contents of walleyes from the Island region changed from mainly yellow perch during the summer to emerald shiners by the end of the year. Walleyes collected east of the Islands had consumed only smelt and yellow perch. The numbers of forage species caught with walleyes in trawls showed little correlation with the representation of these species in walleye stomachs. Walleyes fed on the smallest individuals of each species regardless of species preferences.
| Publication type | Article |
|---|---|
| Publication Subtype | Journal Article |
| Title | Food of young-of-the-year walleyes in Lake Erie |
| Series title | Fishery Bulletin |
| Volume | 65 |
| Issue | 2 |
| Year Published | 1966 |
| Language | English |
| Publisher | U.S. Fish and Wildlife Service |
| Contributing office(s) | Great Lakes Science Center |
| Description | p. 489-494 |
| Larger Work Type | Article |
| Larger Work Subtype | Journal Article |
| Larger Work Title | Fishery Bulletin |
| First page | 489 |
| Last page | 494 |
| Google Analytic Metrics | Metrics page |