ARDF Tanks

Proceedings of NodaVirus Workshop

Aquaculture Research and Development Facility
Ocena Sciences Centre, Memorial University of Newfoundland

Viral encephalopathy and retinopathy (VER), or viral nervous necrosis (VNN) is caused by nodavirus infection and has been reported as a serious disease of larval and juvenile marine fish. Nodavirus are found in both cold and warm seawater and VER is documented in more than 30 marine fish species worldwide. In Norway, incidences of high mortality in culture facilities for Atlantic halibut due to nodavirus have been reported since 1995. Although no significant mortalities due to nodavirus infecting halibut in Atlantic Canada have been described to date, nodavirus was isolated and characterized as the causative agent of a disease outbreak among cod and haddock at various institutions and hatcheries throughout North America since 1999. Facilities that have been affected by nodavirus have certainly come out of the experience with an increased awareness of biosecurity measures. From quarantining and screening of new broodstock into the hatchery, to having dedicated equipment for each rearing tank, the facility must learn to control the quality of all inputs to the fish growing system. Clearly, further advances in technology are needed for routine and non-lethal screening of production fish for nodavirus so that we may better understand the mode of transmission of this virus and causes of outbreaks. Until then, production management will be the key factor for reducing the risk of future nodavirus-related mass mortalities in the hatchery.

Overview of workshop:

NodaVirus Workshop

Wednesday, November 27, 2002 - 9:00 am -5:00 pm

Marine Institute-Hampton Hall, St. John's, NL

This workshop will focus on noda-virus and its relevance in marine finfish aquaculture. It will focus on fish health, testing methods and importance of biosecurity.


  • Session One - Introduction to Noda Virus
    • Case Studies –NL, Canada, New Hampshire, USA
  • Session Two - Noda Virus related issues
    • Noda Virus and Atlantic Cod related issues
    • Experimental infections of Atlantic Cod, Haddock and Halibut
    • Potential carriers of Noda Virus among wild fish
  • Session Three - Fish health, Diagnostics and Bio-Security
  • Session Four- Discussion and Wrap-up


  • Date:Wednesday, November 27, 2002
  • Time: 09:00am - 05:00 pm
  • Location: Hampton Hall, Marine Institute of Memorial University, Ridge Road, St. John's, NL.
  • Registration Fee: $100.00 CAD per person on site (includes coffee breaks, lunch, copy of workshop proceedings)

All information is on the OSC's website at and AquaNet's website

Moderator-Dr. Joseph A. Brown-Memorial University of Newfoundland, NL, Canada


  • Dr. Daryl Whelan - Department of Fisheries and Aquaculture, St. John's, NL.,Canada
  • Dr. Stewart Johnson - National Research Council of Canada, Halifax, NS, Canada
  • Dr. Roland Cusak - Department of Agriculture and Fisheries, Truro, NS, Canada
  • Dr. Duane Barker - Marine Institute of Memorial University (C-ASD), St. John's, NL.,Canada
  • Mr. Nick King - Great Bay Aquaculture, LLC, Portsmouth, NH, USA
  • Ms. Lori Thorne - Memorial University of Newfoundland, St. John's, NL, Canada
  • David Groman, MSc., PhD. - Aquatic Diagnostic Services, Atlantic Veterinary College, UPEI

the Network of Centres of Excellence for Aquaculture,

Newfoundland Aquaculture Industry Association,

Government of Newfoundland and Labrador Department of Fisheries and Aquaculture,

Northern Cod Ventures Limited,

Marine Institute of Memorial University (C-ASD),

Ocean Sciences Centre and the Aquaculture Research and Development Facility.

For further information on this workshop, please contact the workshop organisers, Danny Boyce Aquaculture Research and Development Facility, Ocean Science Centre, Memorial University of Newfoundland (709) 864-8691 ( or Melissa Struthers ( AquaNet.


Ocean Sciences

230 Elizabeth Ave, St. John's, NL, CANADA, A1B 3X9

Postal Address: P.O. Box 4200, St. John's, NL, CANADA, A1C 5S7

Tel: (709) 864-8000