U.S. flagAn official website of the United States government
                    Here's how you know **Official websites use .gov**
                            
                            A **.gov** website belongs to an official government organization in the United States.
 **Secure .gov websites use HTTPS**
                            
                            A **lock** (                            
                              A locked padlock                                                      
                            
                            ) or **https://** means you’ve safely connected to the .gov website. Share sensitive information only on official, secure websites.


Menu Agricultural Research Service
						
                    U.S. DEPARTMENT OF AGRICULTURE
 Harry K. Dupree Stuttgart National Aquaculture Research Cntr: Stuttgart, AR
 close



    Research

                    Research Projects
                                    Publications
                                    Collaborations
                                    News
                People

                    Staff Listing
                                    CareersSearch small
                    Search
            
            ARS Home
                                About ARS
                                Contact Us




ARS Home Southeast Area Stuttgart, Arkansas Harry K. Dupree Stuttgart National Aquaculture Research Cntr Research Publications at this Location





- ARS National Programs
- Search for a scientific manuscript
- Search for a research project
- ARS Software
- Programs and Projects
- Collaborations
- Subjects of Investigation
- Publications
- IACUC Summary

Title:   Author  item
                                            RYAN, ADAM - Hydroqualitem
                                            Straus, David

                                                         - *Dave*item
                                            TOMASSO, JOSEPH - Texas State University
  Submitted to: Society of Environmental Toxicology and Chemistry (SETAC)
                                    Publication Type: Abstract Only
                                    Publication Acceptance Date: 9/20/2011
                                    Publication  Date: 11/13/2011
                                    Citation: Ryan, A., Straus, D.L., Tomasso, J. 2011. Effects of water chemistry on the toxicity of Cu to the fish parasite Ichthyophthirius multifiliis: Development of a BLM for therapeutic application [abstract]. Society of Environmental Toxicology and Chemistry North America 32nd Annual Meeting, Navigating Environmental Challanges: Historical Lessons Guiding Future Directions, November 13-17, 2011, Boston, Massachusetts. p.391.Interpretive Summary:
                                Technical Abstract: Ichthyophthirius multifiliis (Ich) is a common ectoparasite that invades the skin and gills of freshwater fish.  Copper sulfate (CuSO4) is often used to control infestations of Ich in pond aquaculture in the United States.  In this study, we determined the acute toxicity of CuSO4 to the free-swimming theronts of Ich in reconstituted waters.  Water chemistry characteristics, including calcium, magnesium, and pH were varied independently and spanned relevant ranges.  The objective of these experiments was to provide data that would serve as the basis for development of a biotic ligand model (BLM) that could be used to derive therapeutic doses of copper sulfate in aquaculture operations.  A BLM for such purposes would be ideal because it could define effective bioavailability-based doses for controlling Ich outbreaks while simultaneously evaluating if copper doses would be safe for fish.  Preliminary data analysis suggested that solution chemistry influenced the toxicity of CuSO4 to Ich, and that Ich strain or batch contributed to the variability in the observed effect concentrations.  Development of a BLM for Ich may have to be strain-specific, which for aquaculture purposes suggests that the least sensitive Ich strain should be used for BLM development.


Return to top


Connect with ARS Sign up


ARS Home
                            USDA.gov
                            Plain Writing
                            Policies & Links
                            Civil Rights Statements
                            FOIA
                            Accessibility Statement
                            Privacy Policy
                            Non-Discrimination Statement
                            Quality of Information
                            USA.gov
                            WhiteHouse.gov