From the 1999 Southern Division of the American Fisheries Society Midyear Meeting held in Chattanooga, Tennessee.

A Review of the Relations between Largemouth Bass and Aquatic Plants

Michael Maceina, Department of Fisheries and Allied Aquacultures, Auburn University, Alabama

Keywords: largemouth bass, aquatic plants, recruitment, growth, fishing


Conflicts are increasing between management of aquatic plants and largemouth bass Micropterus salmoides. Largemouth bass anglers prefer to fish near or in aquatic vegetation and usually demonstrate the greatest opposition to controlling aquatic plants. The invasion and spread of exotic plants particularly hydrilla Hydrilla verticillata and Eurasian milfoil Myriophyllum spicatum has in some instances created excellent largemouth bass fisheries. Generally, the two rationale support maintaining some plants for managing largemouth bass fisheries and include; 1) that largemouth bass reproduction and early survival is enhance in vegetated habitats that will subsequently produce more adults, and 2) angler catachability of fish is greater in habitats that contain plants. However, excessive levels of aquatic plants can be detrimental to largemouth bass fisheries. Typically, production of young largemouth bass increases with plant coverage, but high densities and competition for food can reduce growth and survival. When plant coverage exceeds 30-40% coverage, growth rates of fish are reduced, body condition declines, and the population is skewed towards greater abundance of smaller individuals. Usually, catch rates by anglers increase with plants, but the size of fish caught declines. The "best science" indicates that 10 to 40% areal coverage of submersed plants may be ideal for largemouth bass fisheries in larger water bodies.


Back to Abstract
Index
Back to Black
Bass Ecology Index