You are here: Home Food & Kitchen Food Industry Infectious Salmon Anemia Spreads to Wild Salmon Infectious Salmon Anemia Spreads to Wild Salmon by Heather Carr October 28, 2011, 9:41 am 2 Comments The virus that devastated Chile’s fish farms just a few years ago has been found in wild salmon in British Columbia. Infectious salmon anemia was first detected in a salmon farm in Norway in 1984. Since then, it has spread around the Atlantic to many farms. Once the virus that causes infectious salmon anemia is established in a location, it is impossible to eradicate. The virus can be spread in the water, from fish to fish, and by employees of the fish farm and through equipment, such as nets. Crowded conditions cause it to move through a fish population quickly. In the wild, a sick fish will usually be picked off by a predator, slowing the spread of a disease. But in the crowded conditions of a fish farm, a dying fish will remain in close contact with other fish as it dies and sloughs off the virus into the water. That the virus has been found in a wild population is worrisome. It might be a fluke – only two fish out of 48 tested has the virus. It may also mean that the virus can survive longer in open water. Several vaccines exist to prevent infection with the virus, but researchers say they are not entirely effective and are impractical to administer. That’s within a fish farm, where the fish are close together and penned in. In the wild, it would be nearly impossible. This has serious implications for wild salmon fisheries. Image by USFWS Pacific Southwest Region, used with Creative Commons license. See more Previous article New Survey: Locavores Out, Local In Next article Map Shows Who Gets Screwed by Climate Change, Who Doesn’t One Comment Leave a Reply Go to fishfarmnews.blogspot.com to see a table of where Norwegian derivative fish farms have taken ISA. Reply One Ping Pingback:Another Pacific Salmon Found with Infectious Salmon Anemia Leave a Reply Cancel reply Your email address will not be published. Required fields are marked *Comment Name * Email * Website Save my name, email, and website in this browser for the next time I comment.