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Ashland NFWCO
 Midwest Region
 MTAN Logo
      *Dedicated To Tribal Aquaculture Programs*http://www.fws.gov/midwest/ashland/mtanhome.html
      Fish Jumping
          March 2006 ~ Volume 55**Coordinator:
  Frank G. Stone 
                  (715-682-6185) Ext.
                  202
                  U.S. Fish and
                  Wildlife Service
                  Email: [email protected]**
                **Edited
                  By:
                  Elizabeth W. Greiff 
                  (715-349-2195) Ext. 5141
                  St. Croix Tribal Nat. Res. Depart.
                  Email: ****[email protected]****** *Topics
  Of Interest:* *UW- Stevens Point Northern Aquaculture Demonstration Facility
  *Disinfection of Fish Eggs - A Practical Method
  *A Pond Manager Diagnostics Tool - AquaPlant  UW- 
    Stevens Point Northern Aquaculture Demonstration FacilityBy:  Gregory J. 
    Fischer, Facility Director
  The new UW- 
            Stevens Point Northern Aquaculture Demonstration Facility would like to 
            invite all the area Tribal Fish Hatcheries/Aquaculture programs to explore 
            how the facility may be able to assist their programs.
          The facility is 
            able to offer hands on training in old and new hatchery/aquaculture 
            practices and systems.  Please review the following summary of the 
            facility and feel free to contact us at 
            715-779-3461 or email [email protected].
  **UNIVERSITY  OF WISCONSIN-STEVENS POINT****NORTHERN AQUACULTURE DEMONSTRATION  FACILITY (NADF)**
  
  This  state-of-the-art aquaculture demonstration and research facility is located  near Red Cliff, Wisconsin.  The facility boasts an 8,500 sq. ft. aquatic  production barn, with wet lab, office, mechanical, storage, and aquatic  production areas.  The Northern Aquaculture Demenstration Facility (NADF) is capable of  raising warm, cool, and coldwater fish species demanding various needs.  The rearing facilities include a bell jar  incubation system, a heath tray incubation system, several 10,000-12,000 gallon  recirculation aquaculture systems (RAS) and a hydroponic plant rearing  area.  Cold, 46 degree F water is  supplied by two high capacity wells capable of up to 1600 gpm if needed.  A combination 1,600 sq. ft. tractor  shed/well/headtank building provides storage for equipment, one high capacity  well, water supply headtank with degassing system, hot water boiler and heat  exchanger systems, walk in freezer, rotary air blower, and dry storage area.  An additional 200 sq.  ft. well building houses the second high  capacity well.
  Outside, the facility has four one-acre drainable  rearing ponds complete with water supply, air line supply, drain funnel, and an  external screened, concrete, fish-collecting basin.  Additionally, the facility has two 3’x 60’  concrete raceways and two effluent settling basins.  The entire system is controlled by a SCADA  computerized system which monitors pumps, aquifer levels, water usage, and  security issues.
  **What 
  is the Facilities Mission?**The mission of the NADF is to  promote and advance the development of commercial aquaculture in a northern  climate by:
  Providing a site where production scale       aquaculture can be demonstrated
    Offering hands-on training and workshops in       modern aquaculture techniques and strategies
    Conducting applied research projects on promising       technologies and techniques in commercial aquaculture
    Providing educational outreach and information on       all aspects of the science and business of aquaculture**How 
  Can the NADF Assist Me?**The NADF will help with  technical  problems, provide training and  educational materials, demonstrate aquaculture technologies with a hands-on  emphasis, provide additional aquaculture contacts, and conduct applied research  based on actual needs.  The staff of the  facility will work with the aquaculture industry, tribal, state, federal  agencies and the general public to identify needs, conduct training/research,  and to disseminate pertinent aquaculture  information in a suitable fashion.
  **What is the Facility doing now?**
  In 2005, the NADF completed incubation and raising yellow perch in conjunction       with the Bad        River and Lac Du       Flambeau Natural Resources Departments.        This project was done to develop and practice perch rearing       strategies and to test incubation equipment at the facility.The NADF is working on several 
  projects that began in 2005.  They include:
  Incubating and rearing extended growth (6”)       walleye in outdoor rearing ponds for the LCO Tribal Conservation       Department. This demonstrates pond rearing practices for coolwater fish       species.
    Commercial rearing of yellow perch in an indoor       recirculating aquaculture system (RAS).        This research is funded by a grant from USDA and in conjunction       with the UW-Milwaukee Water Institute.
    Commercial rearing of several strains of brook       trout to compare growth and performance between strains and feed       types.
    Commercial rearing of baitfish utilizing RAS.  This research is in the       process of acquiring funding through the North Central Regional       Aquaculture Center (NCRAC) and will be started in 2006.  This project is in conjunction with       UW-Madison and Minnesota Sea Grant.
    Startup of an aquaculture education class at the       local Bayfield        High School in       cooperation with the school district and Department of Public Instruction.
    Participation in UW-Madison study of treatment       resistant bacterial populations in aquaculture facilities.
    Internships with local high school students and       college students.
    Hiring of full and limited term aquaculture       technicians for the facility.
    Conducting tours of facility to interested       personnel and groups, with over 200 people through the door this summer!
    Articles and updates in newspapers, magazines,       and on webpage.**To schedule a tour, or for more information, contact:**
    Gregory Fischer, Facility  Director
      Phone:  715-779-3461
    Email:[email protected]http://www.uwsp.edu/cls/aquaculture/ Disinfection 
    of Fish Eggs - A Practical MethodBy: Kenneth L. Riley, Fish Farming News
  Managing aquatic animal health is key to the success of any 
    aquaculture operation. In a hatchery facility, when a healthy environment is 
    maintained through proper diagnosis and treatment of diseases, a continuous 
    supply of fish eggs and larvae can support year-round production of fish.
  While biosecurity plans and best management practices help 
    prevent the spread of disease throughout production facilities, a few simple 
    steps can help prevent the vertical transmission of disease from broodstock to 
    eggs and larvae.  Whether the eggs are received from outside the hatchery 
    or produced on-site, they should be disinfected to prevent the spread of disease 
    in the hatchery facilities.
  A number of methods have been developed to disinfect fish eggs. 
    These methods include using solutions of formalin, hydrogen peroxide, iodine, 
    methylene blue, ozone, benzalkonium chloride (RoccaP) or sodium hypochlorite 
    (beach). Many of these solutions are highly effective against gram-positive and 
    gram-negative bacteria and fungi.
  Iodine and formalin are the most common solutions used. Formalin 
    is effective against grain-negative bacteria and fungi at concentrations to 100 
    mg/I but becomes toxic to eggs and developing embryos at the higher 
    concentrations required to kill gram-positive bacteria.
  To date, the use of iodine 
    or iodophores remains the most effective egg disinfectant for eliminating
    the 
    transfer of gram-positive and gram-negative bacteria, fungi and some viruses.
  The term iodophores refers to commercial forms of iodine. 
    Iodophores are organic compounds that release flee iodine and are generally 
    available in 1% (10,000 mg/I) solutions. It is important to be aware of the 
    concentration of the compound.  Commercially available iodophores are 
    Argentyne®. Betadine®. Ovadine® and Wescodyne®. These products are considered 
    highly effective bactericides and virucides.
  Caution should be used in disinfecting eggs that are near 
    hatching because the concentrations of iodine will be toxic to the emerging 
    larvae.  The research staff at Harbor Branch Oceanographic Institution’s 
    Aquaculture Division disinfect freshwater and marine fish eggs at neurula stage 
    with a 10-minute bath treatment at 100 mg/I of free iodine. The recommended volume of 
  eggs to disinfectant solution is 1:10.  A 100 mg/L iodine concentration is
  equivalent to a 1:100 dilution of solution (use 38 ml, or 1.28 fluidounces or 
  7.5 teaspoons per gallon of water). Sodium bicarbonate (baking soda) should be added as a buffer at 
    3.7 grams per gallon if water is low in alkalinity and hardness (less than 75 
    mg/ CaCO3).  Gently mix eggs and disinfectant to ensure that all 
    egg surfaces are treated.  Eggs should be treated for 10 minutes.  
    Thoroughly rinse the eggs with clean water to remove iodine residue before 
    putting them into incubators or hatching jars.  Throughout the disinfection 
    process, attention should be given to minimize temperature fluctuations and 
    prevent temperature shock to the eggs. Any dead or unfertilized eggs should be 
    removed to minimize growth of bacteria or fungi during incubation. A POND MANAGER DIAGNOSTICS 
    TOOL - AquaPlantBy: Texas Cooperative 
    Extension
  AquaPland LogoAquaPlant was designed to help pond owners and their advisors in the identification and 
    management of aquatic vegetation.  Aquatic vegetation management can be a 
    perplexing problem.  The first part of that problem is proper identification.  
    Management of most aquatic plant species depends on properly identifying the 
    desirable or nuisance plant.  If you already know the aquatic plant  that 
    needs management, then you want to proceed to Management Options. Components of this web 
  site include: Plant Identification: This section of 
          AQUAPLANT is designed to help you identify aquatic plants using photos, 
          drawings, and descriptions.  Using this section involves viewing photos and 
          drawings of aquatic plants until you identify the plant in question.  Aquatic plants are generally divided into four groups for 
          management purposes.  These groups are the Algae, Floating Plants, Submerged 
          Plants, and Emergent Plants.
        Many ponds have 
          more than one type of aquatic plant, and care must be taken to identify all 
          the aquatic plants inhabiting the pond.  Some pond plants may be beneficial 
          to local or migratory wildlife, and therefore, may want to be encouraged or 
          at least not eliminated.   Click on 
          whichever group of aquatic plants that you feel your specimen may belong to 
          and work through the examples until you find it.**Algae** are very primitive plants.  Some algae are microscopic (planktonic 
          algae), others are thin and stringy or hair-like (filamentous algae), 
          while still others are large and resemble higher plants but without true 
          roots (chara).
    True **Floating Plants** are not attached to the bottom.  Floating plants come 
          in sizes from very small (duckweed) to over a foot in diameter (water 
          hyacinth).  Most have roots that hang in the water from the floating green 
          portions.**Submerged Plants** are rooted plants with most of  their vegetative mass 
          below the water surface, although some portions may stick above the 
          water.  One discerning characteristic of submerged plants is their flaccid 
          or soft stems, which is why they do not usually rise above the water's 
          surface.
    **Emergent Plants** are rooted plants often along the shoreline that stand 
          above the surface of the  water (cattails).  The stems of emergent plants 
          are somewhat stiff or firm.**FAQ's**
      Will the herbicides referenced here kill my fish?
        Where can I purchase aquatically registered herbicides?
        What is a surfactant and when are surfactant(s) needed in aquatic herbicide   application?
    Why do fish often die after herbicide treatments?
        Does it matter what time-of-day or time-of-year these aquatic herbicides are   applied?Management Options: The 
          Management Options page assumes that you already know the identity of the 
          plant that you wish to manage.   Below is a comprehensive listing of 
          all plant species represented on this website. Click on the plant name and 
          it will take you to Management  Options for that specific aquatic plant. If you are unsure of the identity of the 
          plant that you wish to manage for, go to the Plant Identification page and begin your search.Alligator WeedBladderwortBull TongueCommon DuckweedCurly-Leafed PondwedFanwortGiant SalviniaLizard's TailNitellaSago PondweedSouthern NaiadsThree-SquareWaterleafWater PennywortWhite Water Lily
    American LotusBlue FlagCommon ReedEelgrassFilamentous AlgaeHorsetailMaidencaneParrotfeatherSedgesSouthern WatergrassTorpedograssWatermealWater PrimroseWidgeon Grass
    ArrowheadBrittle NaiadsButtonbushCommon SalviniaEgeriaFrog's-BitHydrillaMosquito FernPickerelweedSmartweedSpatterdockVariable-Leaf PondweedWater HyacinthWater ShieldWillow
    Banana LilyBulrushCattailCoontailEurasian WatermilfoilGiant DuckweedIllinois PondweedMuskgrassPlanktonic AlgaeSoft RushSpike RushVairable-Leaf WatermilfoilWater LettuceWater StargrassYellow Water Lily **Return
          to MTAN selection pageReturn to Ashland FRO home pageReturn to Region 3 U.S. Fish and Wildlife Service** Product and company
      names mentioned in this publication are for informational purposes only.
      It does not imply endorsement by the MTAN or the U.S. Government.
 
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