Date of Degree
Graduate Thesis - Open Access
Wildlife and Fisheries Science
Master of Science
College of Forest Resources
Department of Wildlife and Fisheries
Two experiments were conducted to investigate the hypothesis that exotic macrophytes alter littoral zone habitat and impact fish that inhabit these areas. The pond experiment was conducted to explore impacts of exotic invasive plants on growth and condition of juvenile largemouth bass (Micropterus salmoides). The second experiment was conducted at a smaller scale in aquaria to simulate an invasion of hydrilla (Hydrilla verticillata) and its influence on juvenile bass foraging. Fish experienced slower growth in the hydrilla treatment than in the diverse, and the ability of bass to capture prey fish was impeded in hydrilla. Juvenile bass growth decreased in habitats containing hydrilla and is likely a result of increased difficulty in capturing quality prey items such as small fish. Results from the two experiments collectively supported my hypothesis that hydrilla growth altered the littoral zone habitat such that foraging was hindered and resulted in slower growth.
Perret, Alexander James, "A Multi-Scale Approach To Evaluate The Effect Of The Invasive Aquatic Plant Hydrilla (Hydrilla Verticillata) On Littoral Zone Habitat Of Juvenile Largemouth Bass (Micropterus Salmoides)" (2007). Theses and Dissertations MSU. 197.