Theses and Dissertations


Title: Food habits, growth, predator-prey relationships, and length-weight relationships of young-of-the-year black crappie and largemouth bass in ponds

Name: Tucker, William Howard

Degree: MS

Chair: Dr. R. Oneal Smitherman

Resides: FAA Library

University: Auburn

Location: Auburn, Alabama

Date: 1971

Pages: 72

Keywords: Food Habits,Growth,Predator-Prey Relationships,Length-Weight Relationships,Young-of-the-Year,Black Crappie,Largemouth Bass.

Abstract:

Predator-prey relationships, food habits, growth, and length-weight relationships were studied in populations of young-of-the-year largemouth bass and black crappie in ponds. Time of spawning and degree of spawning appeared to be major factors influencing these factors. Stomachs of 220 bass and 186 crappie were examined. Crappie fed mainly on zooplankton, but during the period of this study,as crappie increased in size, consumption of aquatic insects increased. Bass fed on crappie if the crappie were small enough. In ponds where young crappie were too large to serve as food for bass, the latter fed on aquatic insects and competed with young crappie for food. When young bass fed on crappie, growth of bass was fast. When bass could not utilize crappie, bass growth was much slower. Growth of crappie was rapid when they were being reduced by bass predation. Length-weight relationships were calculated for 601 bass and 496 crappie. The condition index for bass fluctuated more than for crappie. The peak highs of bass condition were apparently associated with periods when bass were feeding on crappie.

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