Experts are debating the study, published in Science magazine. The Canadian government and some American experts say no direct link has been found between sea lice and salmon deaths.

• 专家们质疑这项发表在科学杂志上的研究。加拿大政府和一些美国专家认为海洋寄生物和大麻哈鱼死亡之间没有之间联系。