MANAGEMENT STRATEGY EVALUATION OF PHEROMONE‐BAITED TRAPPING TECHNIQUES TO IMPROVE MANAGEMENT OF INVASIVE SEA LAMPREY |
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Authors: | HEATHER A. DAWSON MICHAEL L. JONES BRIAN J. IRWIN NICHOLAS S. JOHNSON MICHAEL C. WAGNER MELISSA D. SZYMANSKI |
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Affiliation: | 1. Department of Biology, University of Michigan‐Flint, Flint, MI;2. Quantitative Fisheries Center, Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI;3. U.S. Geological Survey, Georgia Cooperative Fish & Wildlife Research Unit, Warnell School of Forestry and Natural Resources, University of Georgia, Athens, GA;4. U.S. Geological Survey, Great Lakes Science Center, Hammond Bay Biological Station, Millersburg, MI;5. Department of Fisheries and Wildlife, Michigan State University, East Lansing, MI |
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Abstract: | We applied a management strategy evaluation (MSE) model to examine the potential cost‐effectiveness of using pheromone‐baited trapping along with conventional lampricide treatment to manage invasive sea lamprey. Four pheromone‐baited trapping strategies were modeled: (1) stream activation wherein pheromone was applied to existing traps to achieve 10?12 mol/L in‐stream concentration, (2) stream activation plus two additional traps downstream with pheromone applied at 2.5 mg/hr (reverse‐intercept approach), (3) trap activation wherein pheromone was applied at 10 mg/hr to existing traps, and (4) trap activation and reverse‐intercept approach. Each new strategy was applied, with remaining funds applied to conventional lampricide control. Simulating deployment of these hybrid strategies on fourteen Lake Michigan streams resulted in increases of 17 and 11% (strategies 1 and 2) and decreases of 4 and 7% (strategies 3 and 4) of the lakewide mean abundance of adult sea lamprey relative to status quo. MSE revealed performance targets for trap efficacy to guide additional research because results indicate that combining lampricides and high efficacy trapping technologies can reduce sea lamprey abundance on average without increasing control costs. |
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Keywords: | Management strategy evaluation integrated pest management Laurentian Great Lakes pest control recruitment dynamics structured decision making |
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