Prevention and control of viral diseases of salmonids

Journal of the Fisheries Research Board of Canada
By:

Links

Abstract

Three viral diseases of salmonids are of worldwide concern: infectious pancreatic necrosis (IPN) viral hemorrhagic septicemia (VHS), and infectious hematopoietic necrosis (IHN). Six principal approaches are being used to prevent or control these diseases: 1) preventing contact o the pathogen with the host, 2) environmental manipulation, 3) immunization, 4) chemotherapy, 5 selective breeding for disease resistance, and 6) reducing stress conditions which augment disease conditions. Preventing the introduction of a pathogen into a new stock of fish has been accomplished mainly by implementing stringent laws to prevent transport of infected fish into uninfected areas. Stocks of fish already infected are sometimes destroyed, and the hatchery is disinfected and restocked with fish free of specific pathogens. Environmental manipulation (elevated water temperature) has been successfully used to control IHN. Chemotherapeutics such as povidone-iodine for IPN and benzipyrene for IHN show promise of controlling mortalities; however, the practicality of using these drugs to eliminate the carrier fish has not been evaluated. Salmonids are capable of developing immune responses to viruses; however, development of effective vaccines, selective breeding for disease resistance, and identification of stress conditions which augment disease are still in the experimental phase.

Additional publication details

Publication type Article
Publication Subtype Journal Article
Title Prevention and control of viral diseases of salmonids
Series title Journal of the Fisheries Research Board of Canada
DOI 10.1139/f76-134
Volume 33
Issue 4
Year Published 1976
Language English
Publisher NRC Research Press
Contributing office(s) Western Fisheries Research Center
Description 8 p.
First page 1059
Last page 1066
Online Only (Y/N) N
Additional Online Files (Y/N) N