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

Metadata Updated: July 6, 2024

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.

Access & Use Information

Public: This dataset is intended for public access and use. License: No license information was provided. If this work was prepared by an officer or employee of the United States government as part of that person's official duties it is considered a U.S. Government Work.

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Dates

Metadata Created Date April 2, 2024
Metadata Updated Date July 6, 2024

Metadata Source

Harvested from DOI EDI

Additional Metadata

Resource Type Dataset
Metadata Created Date April 2, 2024
Metadata Updated Date July 6, 2024
Publisher U.S. Geological Survey
Maintainer
@Id http://datainventory.doi.gov/id/dataset/2e67b573f9e652d4a518b68162de852c
Identifier USGS:646f87a6d34e4e58932cfe25
Data Last Modified 20240201
Category geospatial
Public Access Level public
Bureau Code 010:12
Metadata Context https://project-open-data.cio.gov/v1.1/schema/catalog.jsonld
Metadata Catalog ID https://datainventory.doi.gov/data.json
Schema Version https://project-open-data.cio.gov/v1.1/schema
Catalog Describedby https://project-open-data.cio.gov/v1.1/schema/catalog.json
Harvest Object Id e1368435-c45f-4bb8-87e6-dbc487aac944
Harvest Source Id 52bfcc16-6e15-478f-809a-b1bc76f1aeda
Harvest Source Title DOI EDI
Metadata Type geospatial
Old Spatial -83.5757,41.3665,-82.543,41.9717
Publisher Hierarchy White House > U.S. Department of the Interior > U.S. Geological Survey
Source Datajson Identifier True
Source Hash 8973e5b4a416bdba3f7d18e596c54ae733732a48afbca249f8b1ed4ae3096ae8
Source Schema Version 1.1
Spatial {"type": "Polygon", "coordinates": -83.5757, 41.3665, -83.5757, 41.9717, -82.543, 41.9717, -82.543, 41.3665, -83.5757, 41.3665}

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