Skip to Main Content
Diet Overlap and Predation between Smallmouth Bass and Walleye in a North Temperate LakeAuthor(s): Aaron P. Frey; Michael A. Bozek; Clayton J. Edwards; Steve P. Newman
Source: Journal of Freshwater Ecology 18(1):43-54
Publication Series: Scientific Journal (JRNL)
Station: North Central Research Station
PDF: Download Publication (1.34 MB)
DescriptionWalleye (Stizostedion vitreum vitreum) and smallmouth bass (Micropterus dolomieu) diets from Big Crooked Lake, Wisconsin were examined to assess the degree of diet overlap and predation occurring between these species in an attempt to deternine whether walleye influence smallmouth bass recruitment, which is consistently low compared to proximal lakes that do not have walleye. Of 389 adult walleye stomachs examined from June 1999 through March 2000, a total of 879 prey fish was found, but only one was identified as a smallmouth bass. In 303 smallmouth bass stomachs examined, 55 prey fish were found and no cannibalism was evident, nor were walleye preyed upon. Dietary overlap using the Schoener resource overlap index was 0.416, 0.293 and 0.205 for the months June, July and August 1999, respectively, indicating that there was not a significant dietary overlap during summer months. Because neither diet overlap nor predation appeared substantial in Big Crooked Lake, additional research on interactions among younger age classes of walleye, interactions at other times of the year, and interactions with other species are needed to elucidate limitations to smallmouth bass recruiment in this system.
- Check the Northern Research Station web site to request a printed copy of this publication.
- Our on-line publications are scanned and captured using Adobe Acrobat.
- During the capture process some typographical errors may occur.
- Please contact Sharon Hobrla, firstname.lastname@example.org if you notice any errors which make this publication unusable.
- We recommend that you also print this page and attach it to the printout of the article, to retain the full citation information.
- This article was written and prepared by U.S. Government employees on official time, and is therefore in the public domain.
CitationFrey, Aaron P.; Bozek, Michael A.; Edwards, Clayton J.; Newman, Steve P. 2003. Diet Overlap and Predation between Smallmouth Bass and Walleye in a North Temperate Lake. Journal of Freshwater Ecology 18(1):43-54
- Habitat Selection of Nesting Smallmouth Bass Micropterus dolomieu in Two North Temperate Lakes
- Habitat Features Affecting Smallmouth Bass Micropterus dolomieu Nesting Success in Four Northern Wisconsin Lakes
- Environmental DNA assays for the sister taxa aauger (Sander canadensis) and walleye (Sander vitreus)
XML: View XML