Loading…
Welcome to the interactive web schedule for the 2018 Midwest Fish & Wildlife Conference! For tips on how to navigate this site, visit the "Helpful Info" section. To return to the main Conference website, go to: www.midwestfw.org.
Back To Schedule
Tuesday, January 30 • 6:00pm - 9:00pm
Poster Display. Immobilization Thresholds of Small Asian Carp Relative to Different Electrofishing Settings

Sign up or log in to save this to your schedule, view media, leave feedback and see who's attending!

AUTHORS: Ryan Long, U.S. Fish & Wildlife Service, Columbia Fish & Wildlife Conservation Office; Jeremiah Smith, U.S. Fish & Wildlife Service, Columbia Fish & Wildlife Conservation Office; Jahn Kallis, U.S. Fish & Wildlife Service, Columbia Fish & Wildlife Conservation Office; Emily Pherigo, U.S. Fish & Wildlife Service, Columbia Fish & Wildlife Conservation Office; Jason Goeckler, U.S. Fish & Wildlife Service, Columbia Fish & Wildlife Conservation Office; Wyatt Doyle, U.S. Fish & Wildlife Service, Columbia Fish & Wildlife Conservation Office; Jan Dean, Dean Electrofishing, L.L.C., Jeremy Hammen, U.S. Fish & Wildlife Service, Columbia Fish & Wildlife Conservation Office

ABSTRACT: Invasive Asian carp populations, which negatively impact native species, have increased throughout the Mississippi River basin.  A common sampling technique used to control and manage these invading species is to utilize electricity.  To properly capture these species with electricity, it is important to understand what amount of energy is needed to immobilize the species.  We designed a laboratory study to determine 1) what frequency and duty cycle of the four we used is most effective in immobilizing Silver Carp and 2) how many volts per centimeter is needed to immobilize small Silver Carp (170 – 206 mm) using pulsed direct current.  Four electrical settings were considered, including 30-15, 60-20, 60-25, and 80 Hz-40 duty cycle. We found that mean immobilization thresholds were highest using 15% duty cycle with 30Hz at .316V/cm and relatively low using the other settings .234-.268 V/cm. Information gained from this study will help determine what settings to use when sampling for Asian carp. To further advance our knowledge to effectively manage and control these species. 

Tuesday January 30, 2018 6:00pm - 9:00pm CST
Ballroom C & Foyer

Attendees (2)