The predation of lake sturgeon, Acipenser fulvescens, by spotted bass, Micropterus punctulatus, and channel catfish, Ictalurus punctatus, was investigated under artificial conditions. Experiments were conducted in a 27,600-liter tank at the Southeast Aquatic Research Institute. Spotted bass were provided bluegill, Lepomis macrochirus, as a potential food source during the first four days of each experiment, and lake sturgeon were provided as a potential food source during the latter four days of each experiment. Channel catfish were given either chow or lake sturgeon separately or chow and lake sturgeon concurrently as food sources. Spotted bass consumed 85 bluegill (x = 6.87 cm) but consumed no large sturgeon (x = 11.8 cm) or small sturgeon (x = 7.01 cm), and channel catfish consumed 13 small sturgeon and 5 large sturgeon but consumed no bluegill. It was determined that channel catfish, but not spotted bass, were predators of juvenile lake sturgeon.
Sandoval, Mark, "Predation of Juvenile Acipenser fulvescens by Micropterus punctulatus and Ictalurus punctatus" (2000). Senior Research Projects. 68.