BROOKLIN, Canada, Oct 2 (IPS) - Canada's open-ocean salmon farms are killing enormous numbers of wild salmon, threatening the species, a new study shows. Research published Monday found that sea lice -- a fish parasite -- from salmon farms along the British Columbia coast kill up to 95 percent of the wild juvenile salmon as they head out to sea.
"It is a startling conclusion," said Alexandra Morton, a biologist with the Raincoast Research Society and co-author of the study published in the Proceedings of the National Academy of Sciences. "We are not going to have any wild salmon at this rate," Morton told IPS. The study says there is little doubt that the source of the sea lice infestation is British Columbia's (BC) booming aquaculture industry, where tens of millions of Atlantic salmon are raised in open-ocean net pens along the coast. "The debate is over," said Morton.
The impact of more than 100 large salmon aquaculture operations along the BC coastline has been bitterly disputed for the last decade. British Columbia is the world's fourth largest farmed salmon producer, netting more than 300 million dollars in annual sales, mainly to the United States.
The farmed fish are non-native Atlantic salmon, which are prone to infestations of sea lice -- small parasites that feed on the skin and mucous membranes -- which are not generally found in high numbers, except at fish farms where a million fish can be impounded.
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