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
                                            Straus, David

                                                         - *Dave*item
                                            Mitchell, Andrewitem
                                            Carter, Rayitem
                                            STEEBY, JAMES - Mississippi State University
  Submitted to: Aquaculture Research
                                    Publication Type: Peer Reviewed Journal
                                    Publication Acceptance Date: 12/3/2010
                                    Publication  Date: 12/14/2011
                                    Citation: Straus, D.L., Mitchell, A.J., Carter, R.R., Steeby, J.A. 2011. Hatch rate of channel catfish Ictalurus punctatus (Rafinesque 1818) eggs treated with 100 mg L-1 copper sulphate pentahydrate.  Aquaculture Research. 43:14-18.Interpretive Summary: Catfish hatcheries use copper sulfate to prevent fungus from growing on eggs during their short incubation period.  Nothing has been published about how safe it is to fish eggs.  In previous studies we showed how effective it is at controlling fungus when treating eggs daily with 10 parts per million of copper sulfate.  This rate is very low and copper is flushed out of the troughs within a few hours.  The current research found that ten times this concentration is also very safe for eggs.  This research is important to the catfish industry and will help the FDA in approving this low-cost, safe and effective compound for use in aquaculture.  Current approved treatments for fungus control on catfish eggs are expensive and have human health issues.  Based on current prices (August 2010) and using the lowest concentration, a typical 100 gallon hatching trough would cost $0.01 per treatment with CuSO4, but $0.45 and $0.72 per treatment with hydrogen peroxide and formalin, respectively.
                                Technical Abstract: Catfish hatcheries use copper sulfate (CuSO4) as an economical control for saprolegniasis on eggs.  This study determines hatch rate of channel catfish eggs in hatching troughs containing 23.8°C flow-through well water when treated with 100 mg/L CuSO4 (ten times the proposed therapeutic dose).  Eggs were treated daily until the embryos reached the eyed stage.  Fry survival in the control and 100 mg/L CuSO4 treatments were significantly different (15 and 71%, respectively).  This study demonstrates that there is a considerable margin of safety in using CuSO4 as a catfish egg treatment to control saprolegniasis.


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