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Larval and Young of Year Walleye Diets in Western Lake Erie during 2014 and 2019

Lake Erie walleye (Stizostedion vitreum) recruitment fluctuates annually and depends partially on their diet and growth during their first year of life. To determine how age-0 walleye have responded to changes in prey species and abundance, larval and young of year walleye were collected from western Lake Erie in 2019 and 2014. Larval and young of year fish stomachs were extracted and dissected, with prey contents removed for later identification. All prey contents were identified to the lowest possible taxonomic level using a dissecting microscope and counted, with up to 20 prey items from each taxa per fish measured (0.01 mm) using a digital computer image analysis system. Zooplankton prey items were identified to order, family, or genus and measured for body length, excluding the spine. Invertebrate prey items were identified to order, family, or genus and measured for body length and/or head capsule width. Fish prey items were measured for total length, standard length, backbone length, or otolith length depending on their degree of digestion.

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Author(s) Touhue Yang, Robin L DeBruyne orcid, Edward Roseman orcid, Dana Castle orcid
Publication Date 2024-02-01
Beginning Date of Data 2014-07-14
Ending Date of Data 2019-10-08
Data Contact
DOI https://doi.org/10.5066/P9A4NK3J
Citation Yang, T., DeBruyne, R.L., Roseman, E., and Castle, D., 2024, Larval and Young of Year Walleye Diets in Western Lake Erie during 2014 and 2019: U.S. Geological Survey data release, https://doi.org/10.5066/P9A4NK3J.
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Metadata Date 2024-02-01
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Harvest Source: ScienceBase
Harvest Date: 2024-07-24T04:01:55.917Z