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The Delayed Appearance of Infectious Hematopoietic Necrosis Virus (IHNV) in Steelhead Trout (Salmo gairdneri)

  • S. E. LaPatra
  • W. J. Groberg
  • J. S. Rohovec
  • J. L. Fryer
Conference paper

Abstract

Infectious hematopoietic necrosis (IHN) is a nontreatable viral disease of certain species of salmonid fish (Pilcher and Fryer, 1980). The disease, once confined to limited geographical areas, has in the past decade become widely disseminated. The virus has been responsible for important economic losses of cultured and wild fish in the Pacific Northwest of the USA (Groberg and Fryer, 1983), Disease caused by IHNV has increased significantly and control has become important to the successful culture of salmonids. Because there are no vaccines or drugs available, control depends on preventing horizontal and vertical transmission of the virus. This is done by egg incubation and rearing in virus-free water and propagation of eggs from virus-free parents (Groberg and Fryer, 1983). The efficacy of these methods of control is equivocal and often difficult to assess.

Keywords

Bovine Leukemia Virus Sockeye Salmon Virus Concentration Indirect Fluorescent Antibody Test Viral Hemorrhagic Septicemia Virus 
These keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.

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Copyright information

© Springer-Verlag Berlin Heidelberg 1989

Authors and Affiliations

  • S. E. LaPatra
    • 1
  • W. J. Groberg
    • 1
  • J. S. Rohovec
    • 1
  • J. L. Fryer
    • 1
  1. 1.Department of MicrobiologyOregon State UniversityCorvallisUSA

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