Files in this item

FilesDescriptionFormat

application/pdf

application/pdfINHS2008_19.pdf (250kB)
(no description provided)PDF

Description

Title:Yellow Perch Population Assessment in Southwestern Lake Michigan, Including Evaluation of Sampling Techniques and Identification of the Factors that Determine Yellow Perch Year-Class Strength April 1, 2007 – March 31, 2008
Author(s):Redman, Rebecca A.; Czesny, Sergiusz J.; Dettmers, John M.; Zapf, Daniel H.
Subject(s):yellow perch
Lake Michigan
recruitment
year-class strength
recreational fishery
zooplankton abundance
early life history
diet
INHS Division of Ecology and Conservation Science
Division of Fisheries, Illinois Department of Natural Resources
Science in support of ecosystem management and conservation
Science in support of environmental regulation
Science in support of state fish, wildlife and outdoor recreational programs
Science in support of understanding biodiversity and organismal ecology and life histories
Abstract:The objectives of this study are to expand the Illinois Department of Natural Resources (IDNR) annual yellow perch (Percaflavescens) stock assessment data, monitor densities of age-0yellow perch cohort, and identify some of the factors likely to have limited yellow perch recruitment since 1989. We sampled adult yellow perch during the spring to assess the reproductive potential and age and size structure of the spawning population. Anal spines were collected from yellow perch at two known angling sites and analyzed to determine the angler-caught age distribution in 2007. Age-0 yellow perch were sampled at multiple depths and distances from shore with neuston nets, a mid-water Tucker trawl, gill nets, and a bottom trawl. We compared the use of gill nets and bottom trawling for sampling demersal age-0 yellow perch. We also monitored yellow perch egg skein densities, post-larval yellow perch abundance, age-0 yellow perch diets, and continued to evaluate factors that might regulate yellow perch year-class strength. The results of this project will enable fish managers to develop effective management strategies for this important native sport fish. Larval yellow perch sampling will expand our understanding of the early life history of yellow perch in terms of larval fish movements, feeding behavior, and survival. Early life history data will eventually lead to an understanding of factors that affect juvenile survival and future year-class strength. We highlight below some of the important results from 2007 sampling associated with our study objectives.
Issue Date:2008-06-15
Publisher:Division of Ecology and Conservation Science
Series/Report:Yellow Perch Population Assessment in Southwestern Lake Michigan
Technical Report INHS 2008 (19)
Federal Aid Project F-123-R-14
Genre:Technical Report
Type:Text
Language:English
Description:Division of Fisheries, Illinois Department of Natural Resources Grant/Contract No: F-123 R-14
URI:http://hdl.handle.net/2142/18126
Sponsor:INHS Technical Report Prepared for Division of Fisheries, Illinois Department of Natural Resources
Rights Information:This document is a product of the Illinois Natural History Survey, and has been selected and made available by the Illinois Natural History Survey and the University Library, University of Illinois at Urbana-Champaign. It is intended solely for noncommercial research and educational use, and proper attribution is requested.
Date Available in IDEALS:2011-01-07


This item appears in the following Collection(s)

Item Statistics