Analysis of Fish Age Structure and Growth in the Illinois River

Abstract

Otoliths and other calcified structures have been used to age and determine growth rates of fish from a variety of habitats. Sagittal otoliths were removed from fishes representing five species from La Grange Pool of the Illinois River for age determination. Species collected included largemouth bass (Micropterus salmoldes), black crappie (Pomoxis nigromaculatus), bluegill (Lepomis macrochirus), white bass (Morone chrysops), and freshwater drum (Aplodinotus grunniens). Common univariate techniques were used to analyze the significance of spatial and temporal variation in growth and back-calculated mean length-at-age for all five species.

Open PDF

Document Details

Document Type
Technical Report
Publication Date
Jun 01, 2007
Accession Number
ADA470414

Entities

People

  • Kevin S. Irons
  • Mark A. Pegg
  • Michael A. Smith

Tags

DTIC Thesaurus Topics

  • Ecology
  • Environmental Management
  • Eutrophication
  • Fish
  • Fisheries
  • Geological Surveys
  • Habitats
  • Illinois
  • Mississippi River
  • Plastic Explosives
  • Regression Analysis
  • Statistical Analysis
  • Surveys
  • United States
  • Wildlife

Fields of Study

  • Environmental science

Readers

  • Aquatic Ecology
  • Riverine Ecology