Why we need to talk about salmon, and soon
KAMLOOPS — It happened during the eclipse that more than 300,000 Atlantic salmon escaped from a U.S. fish farm in the San Juan Islands. They are now found in the coastal waters of southern British Columbia, and no, they are not just another fish happily swimming alongside native species.
Fish farming is a sore topic in our province, especially on the coast; it has been for a long time. As with most controversial topics, opinions vary, and though science is available to back up findings, it is often pushed out of sight because of conflicting interests.
A recent study published in the Canadian Journal of Fisheries and Aquatics revealed something that should have us all worried. Fisheries and Oceans Canada cannot verify the status, whether healthy or threatened, of more than half of the province’s wild salmon populations.
This is worrying because it comes at a time when the wild salmon are facing serious threats: warm waters due to climate change, which allows for different predators and a shifting in the type of zooplankton they feed on, two types of deadly viruses that are found in farmed Atlantic salmon along the coast, as well as lots of sea lice. That’s on top of a whole lot of waste and antibiotic residue, which trickle into the coastal waters on a regular basis. In the interior, they are facing warm rivers and depleted watersheds. That ought to affect the native salmon. It does.