Going Viral

Gazing out from the village of Tofino towards the rainforest-covered mountains of Clayoquot Sound, the view is spectacular. But who would imagine that just out of sight of town, 20 fish farms are tucked away up the emerald inlets, quietly polluting the pristine waters?

One of the challenges of rearing animals in close quarters is that disease can quickly spread through the population, wreaking havoc. We’ve all heard of avian flu outbreaks. Parents who send their kids to school understand this dynamic all too well.

There is a harmful, highly-contagious disease plaguing salmon farms here in BC. It comes from Norway, where open-net pen salmon farming first began decades ago. British Columbia is lagging behind Norway, but we are beginning to experience the same unsolvable problems they do. Norway has nearly destroyed their own wild salmon runs; but the Pacific Northwest still has marvellous wild salmon runs, unrivalled anywhere else in the world.

Creative Chinook sick

In 2011, the Cohen Commission convened special hearings on disease in salmon farms, forcing fish farm companies and the provincial and federal governments to make their disease data public. When Dr. Kristi Miller took the stand, she revealed that Tofino-based Creative Salmon had for seven years been dealing with an undiagnosed disease which was causing jaundice in their fish. They had asked her to investigate. Her study revealed that Creative’s Chinook salmon had Piscine reovirus (PRV).

Wild juvenile Chum salmon loaded with salmon lice

Clayoquot salmon lice outbreak devastating

A massive outbreak of salmon lice in the Clayoquot Sound UNESCO Biosphere Reserve is threatening to wipe out this year’s salmon runs. Cermaq’s documentation on salmon lice for April show that the numbers of salmon lice on seven of their fourteen Clayoquot farm sites are up to ten times higher than the threshold which requires treatment. The regulatory threshold is three motile salmon lice per farm fish.

There are 20 open net-pen salmon farms in Clayoquot Sound, all located on wild salmon migration routes. The salmon lice outbreak is occurring as wild salmon smolts are leaving Clayoquot’s rivers to begin their life at sea.