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The role of hatcheries in the decline of Lake Ontario Atlantic salmon
Canadian Journal of Fisheries and Aquatic Sciences ( IF 1.9 ) Pub Date : 2021-11-05 , DOI: 10.1139/cjfas-2021-0253
Brian P Morrison 1 , Kathryn Peiman 2
Affiliation  

Canadian Journal of Fisheries and Aquatic Sciences, Ahead of Print.
Lake Ontario Atlantic salmon (Salmo salar) were one of the first species of fish to be cultured in Canada. Their story goes from abundance in the 1700s to protective legislation in 1807, then hatchery culture in 1866 and finally ends in extirpation in 1898. The standard narrative is that Samuel Wilmot’s hatchery efforts briefly staved off their loss from the Lake Ontario basin. However, that story is replete with inaccurate assumptions, unfounded faith in technological solutions, and a belief that numbers of fish released was an accurate measure of success. We challenge the narrative around the perceived benefits of these hatchery efforts and suggest instead that they contributed to the decline of Atlantic salmon in Lake Ontario through the mining of wild gametes, transferring eggs out of basin, mixing locally adapted populations across streams, and the negative genetic effects of releasing hatchery fish.


中文翻译:

孵化场在安大略湖大西洋鲑鱼数量减少中的作用

加拿大渔业和水生科学杂志,印刷前。
安大略湖大西洋鲑鱼(Salmo salar)是加拿大最早养殖的鱼类之一。他们的故事从 1700 年代的丰富到 1807 年的保护性立法,然后是 1866 年的孵化养殖,最后在 1898 年灭绝。标准的叙述是塞缪尔·威尔莫特的孵化工作短暂地避免了他们从安大略湖盆地的损失。然而,这个故事充满了不准确的假设、对技术解决方案的毫无根据的信念,以及认为放鱼数量是衡量成功的准确标准的信念。我们质疑围绕这些孵化场工作的感知利益的叙述,并建议相反,它们通过开采野生配子、将卵转移出盆地、在溪流中混合当地适应的种群,导致安大略湖大西洋鲑鱼的减少,
更新日期:2021-11-05
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