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Welcome to the interactive web schedule for the 2019 Midwest Fish & Wildlife Conference! The schedule is subject to change (as of November 7, 2018). Please check back for updates. To return to the main Conference website, go to: www.midwestfw.org.

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Tuesday, January 29 • 11:20am - 11:40am
(SYMPOSIA-09) Movement and Survival of Bighead Carp Exposed to a Carbon Dioxide Deterrent Barrier

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AUTHORS: David L. Smith, Aaron Cupp, Christa Woodley, Aaron Urbanczyk – U.S. Army Engineer R&D Center

ABSTRACT: In the United States the Asian carps threaten the Great Lakes via the Illinois Waterway.  The United States Army Corps of Engineers and partners are investigating the use of carbon dioxide   based deterrence barrier.  Carbon dioxide acts as an anesthetic that leads to immobilization and death in fishes.  We have been developing carbon dioxide response rules for Bighead carp  (Hypophthalmichthys nobilis) in a laboratory.  We are applying those rules in a hydrochemodynamic numerical model representing a carbon dioxide barrier at Brandon Road Lock and Dam, a component of the Illinois Waterway.  We explore fish response to the carbon dioxide barrier using a fish movement model.  In the model we implemented rules driven by variable water velocities and carbon dioxide concentrations and produced a movement track.  We measured fish numbers that that would 1) leave the barrier in the downstream direction, 2) become immobilized, and 3) successfully pass the barrier.   The results suggest that a carbon dioxide barrier is another fish deterrence technology that has applicability in the management of invasive species.  However, additional research and development is required to better understand fish response to carbon dioxide gradients and cost of deploying an operational barrier. 

Tuesday January 29, 2019 11:20am - 11:40am