OK In Health - Science Corner

Wild Salmon Virus in BC - January 2012

Virus is another sign of failure to protect wild salmon

By David Suzuki, Vancouver, BC

In 2007 and 2008, a virus wiped out millions of salmon on fish farms in Chile, slamming the country’s aquaculture industry with $2 billion in losses, farm and processing-plant closures, and layoffs of 2,000 workers. Now that same virus, infectious salmon anemia, has been found in wild salmon from B.C.’s Rivers Inlet.

The virus normally affects Atlantic salmon, which is what most salmon farms on B.C.’s coast raise, but it can spread and mutate quickly. Scientists confirm that the virus found in the sockeye salmon from River’s Inlet was the European strain, which means it almost certainly came from a fish farm. We don’t yet know what its effect on Pacific sockeye salmon will be, but it could be catastrophic, especially considering all the other threats B.C.’s wild salmon are facing. There is no vaccine or treatment for infectious salmon anemia (which does not affect humans).

Salmon are more than just a commodity; they are an integral part of West Coast ecosystems and culture. They provide food for marine predators and bears, eagles, and other animals along the rivers and lakes where they spawn. The nitrogen and other nutrients they bring from the ocean are spread to the coastal forests by animals that feed on the fish. Salmon also provide a healthy source of nutrition for people and have been an important element of First Nations cultures for many generations. Losing them would be devastating to local economies and would have a profound impact on coastal ecosystems.

Infectious salmon anemia is just the latest in a list of threats identified during the Cohen Commission of Inquiry into the Decline of Sockeye Salmon in the Fraser River. It’s also one of several that have been linked to open net-pen fish farms. The problem of declining salmon populations is obviously bigger than the sum of its threats. Overfishing, habitat destruction, pollution, and fish farms are all issues that can only be dealt with by addressing the larger structural challenges that plague fisheries management in Canada.

The Cohen Commission is wrapping up its hearings and will report to government at the end of June 2012. The David Suzuki Foundation, as part of the Conservation Coalition represented by Ecojustice, submitted recommendations on October 17. One of the coalition’s main conclusions was that we can’t protect wild salmon until we change the way government and Fisheries and Oceans Canada operate. To begin, Fisheries and Oceans is charged with promoting the fish-farming industry, which is absurd. It should focus on its primary mandate of using strong science and monitoring and enforcement to conserve fish.

Canada has a strong conservation tool with its Wild Salmon Policy. But even though it was released in 2005, it has yet to be implemented. Without the policy, and with conflicting mandates and budget cutbacks, the DFO has not been able to do its job properly. The government should restore the independence and transparency of science by re-establishing an independent fisheries research board. Instead of cutting budgets, it should provide money and resources to monitor and enforce regulations to protect fish and habitat. It could start by putting money now used to promote industry into science and conservation.

The government should also address major threats to wild salmon by getting open net-cage salmon farms off wild salmon migration routes and making sure endangered stocks are not overfished. But that’s just a start. We need to move from open net-pen fish farming to closed-containment systems that eliminate interaction between farmed and wild salmon. The government should also do more to confront climate change, which will have an impact on salmon and all marine species.

The problems may seem overwhelming, but with strong policies and regulations, adequate resources, and a Fisheries and Oceans department focused on protecting fish, we can start to address them. Justice Bruce Cohen has heard from many people and groups, and we’re confident that his report will be thorough. Of course, we hope and expect that he will include the recommendations of the Conservation Coalition as well as other environmental groups, First Nations, and all stakeholders who care about the survival of wild Pacific salmon. It will then be up to the government to act quickly on the recommendations. The salmon depend on it. And we depend on the salmon.




David SuzukiDavid's Bio: Dr. David Suzuki is a scientist, broadcaster, author, and chair of the David Suzuki Foundation. He is Companion to the Order of Canada and a recipient of UNESCO's Kalinga Prize for science, the United Nations Environment Program medal, the 2009 Right Livelihood Award, and Global 500. Dr. Suzuki is Professor Emeritus at the University of British Columbia in Vancouver and holds 24 honorary degrees from universities around the world. He is familiar to television audiences as host of the long-running CBC television program The Nature of Things, and to radio audiences as the original host of CBC Radio's Quirks and Quarks, as well as the acclaimed series It's a Matter of Survival and From Naked Ape to Superspecies. His written work includes more than 47 books. Dr. Suzuki lives with his wife, Dr. Tara Cullis, and family in Vancouver, B.C. - David Suzuki Website


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Recipe
Toasted Pumpkin Seeds
Category: Snacks
Description: Pumpkin seeds, also known as pepitas, are flat, dark green seeds.

Subtly sweet and nutty with a malleable, chewy texture, the roasted seeds from inside your Halloween pumpkin are one of the most nutritious and flavorful seeds around. While pumpkin seeds are available year round, they are the freshest in the fall when pumpkins are in season.

Pumpkin Seeds May Promote Prostate Health

Benign prostatic hypertrophy, or BPH, is a condition that commonly affects men 50 years and older. BPH involves enlargement of the prostate gland. One of the factors that contributes to BPH is overstimulation of the prostate cells by testosterone and its conversion product, DHT (dihydrotestosterone). Components in pumpkin seed oil appear able to interrupt this triggering of prostate cell multiplication by testosterone and DHT, although the exact mechanism for this effect is still a matter of discussion. Equally open for discussion is the relationship between pumpkin seed oil extracts (which could be purchased in the form of a dietary supplement) and pumpkin seeds themselves.

Either way, they are a great healthy snack.
Full Recipe