Tradeoff between assessment and control of aquatic invasive species: A case study of sea lamprey management in the St. Marys River

North American Journal of Fisheries Management
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Abstract

Allocating resources between the gathering of information to guide management actions and implementing those actions presents an inherent tradeoff. This tradeoff is evident for control of the Sea Lamprey Petromyzon marinus in the St. Marys River, connecting Lakes Huron and Superior and a major source of parasitic Sea Lampreys to Lake Huron and northern Lake Michigan. Larval Sea Lampreys in the St. Marys River are controlled through the application of Bayluscide, which is applied to areas of high larval density. Bayluscide applications are guided with an annual deepwater electrofishing survey to estimate larval Sea Lamprey density at relatively fine spatial scales. We took a resampling approach to describe the effect of sampling intensity on the success of the larval Sea Lamprey management program and explicitly incorporated the economic tradeoff between assessment and control efforts to maximize numbers of larvae killed in the St. Marys River. When no tradeoff between assessment and control was incorporated, increasing assessment always led to more larvae killed for the same treatment budget. When the tradeoff was incorporated, the sampling intensity that maximized the number of larvae killed depended on the overall budget available. Increased sampling intensities maximized effectiveness under medium to large budgets (US \$0.4 to \$2.0 million), and intermediate sampling intensities maximized effectiveness under low budgets. Sea Lamprey control actions based on assessment information outperformed those that were implemented with no assessment under all budget scenarios.

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Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Tradeoff between assessment and control of aquatic invasive species: A case study of sea lamprey management in the St. Marys River
Series title North American Journal of Fisheries Management
DOI 10.1080/02755947.2015.1103822
Volume 36
Issue 1
Year Published 2016
Language English
Publisher American Fisheries Society
Contributing office(s) Great Lakes Science Center
Description 10 p.
First page 11
Last page 20
Country United States
Other Geospatial St. Marys River
Online Only (Y/N) N
Additional Online Files (Y/N) N