A virus that flourishes in fish farms is now threatening wild populations.

Wild salmon in British Columbia are in trouble. According to one estimate, some populations have dropped by as much as 93 percent since the early 1990s. Lately, the situation has grown dire.,, Last year, the number of sockeye returning to spawn in the Fraser River crashed to a record low. It’s hard to say exactly why this is happening, though logging, climate change, and overfishing all seem to play a role. Among the most controversial potential factors, however, is the virus Piscine orthoreovirus, or PRV. The virus isn’t necessarily fatal, but infected fish may be weakened and unable to swim as fast, making them more likely to be eaten by predators or fail to migrate upriver in order to spawn,,, Not everyone agrees. Among the dissenters is Fisheries and Oceans Canada-DFO,,, >click to read<  Killing Sea Lions to Save the Salmon, February 1,1925, Dorothy G. Bell, >click to read< 19:39

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