Carbon dioxide as a tool to deter the movement of invasive bigheaded carps

Transactions of the American Fisheries Society
By: , and 

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Abstract

Nonnative bigheaded carps are established in the Mississippi River and there is substantial concern about their potential entry into the interconnected Laurentian Great Lakes. While electrical barriers currently exist as a preventative measure, there is need for additional control mechanisms to promote barrier security through redundancy. We tested the effectiveness of infused carbon dioxide gas (CO2) as a tool to influence the movement and behavior invasive bigheaded carps, namely Bighead Carp Hypophthalmichthys nobilis and Silver Carp H. molitrix, as well as native Bigmouth Buffalo Ictiobus cyprinellus, Channel Catfish Ictalurus punctatus, Paddlefish Polyodon spathula, and Yellow Perch Perca flavescens in an experimental pond. Individuals were monitored with acoustic telemetry before, during, and after CO2 addition to the pond. We noted distinct changes in fish behavior following CO2 addition. Each species except Paddlefish maintained farther distances from the CO2 infusion manifold relative to controls. Both bigheaded carp species had slower persistence velocities (persistence of a movement in a given direction) following CO2 infusion and Bighead Carp used a smaller area of the pond immediately after CO2 addition. Pond pH progressively decreased up to 1.5 units following CO2 infusion. This work provides evidence that could inform future research to enhance existing control measures used to deter high-risk invasive fishes, such as bigheaded carps.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Carbon dioxide as a tool to deter the movement of invasive bigheaded carps
Series title Transactions of the American Fisheries Society
DOI 10.1080/00028487.2016.1143397
Volume 145
Issue 3
Year Published 2016
Language English
Publisher American Fisheries Society
Publisher location Bethesda, MD
Contributing office(s) Upper Midwest Environmental Sciences Center
Description 14 p.
First page 657
Last page 670
Online Only (Y/N) N
Additional Online Files (Y/N) N