Guiding out-migrating juvenile sea lamprey (Petromyzon marinus) with pulsed direct current

River Research and Applications
Scott Miehls
By:  and 



Non-physical stimuli can deter or guide fish without affecting water flow or navigation and therefore have been investigated to improve fish passage at anthropogenic barriers and to control movement of invasive fish. Upstream fish migration can be blocked or guided without physical structure by electrifying the water, but directional downstream fish guidance with electricity has received little attention. We tested two non-uniform pulsed direct current electric systems, each having different electrode orientations (vertical versus horizontal), to determine their ability to guide out-migrating juvenile sea lamprey (Petromyzon marinus) and rainbow trout (Oncorhynchus mykiss). Both systems guided significantly more juvenile sea lamprey to a specific location in our experimental raceway when activated than when deactivated, but guidance efficiency decreased at the highest water velocities tested. At the electric field setting that effectively guided sea lamprey, rainbow trout were guided by the vertical electrode system, but most were blocked by the horizontal electrode system. Additional research should characterize the response of other species to non-uniform fields of pulsed DC and develop electrode configurations that guide fish over a range of water velocity.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Guiding out-migrating juvenile sea lamprey (Petromyzon marinus) with pulsed direct current
Series title River Research and Applications
Volume 30
Issue 9
Year Published 2014
Language English
Publisher John Wiley & Sons
Publisher location Chichester, England
Contributing office(s) Great Lakes Science Center
Description 11 p.
First page 1146
Last page 1156
Online Only (Y/N) N
Additional Online Files (Y/N) N