Farmed fish are also prone to parasites, one of which, Gyrodactylus salaris, has infected about 10% of Norway’s rivers, wiping out the wild salmon.

养殖场也易遭寄生虫的侵害，三代虫病是其中之一，挪威的河流大约10％被其感染，灭绝了野生鲑鱼。

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Farmed fish are also prone to parasites, one of which, Gyrodactylus salaris, has infected about 10% of Norway’s rivers, wiping out the wild salmon.

养殖场也易遭寄生虫的侵害，三代虫病是其中之一，挪威的河流大约10％被其感染，灭绝了野生鲑鱼。

youdao