This appeared on my phones newsfeed. I haven't read the full article yet but might shed some light on issues like early smolting? https://www-newscientist-com.cdn.ampproject.org/v/s/www.newscientist.com/article/2302512-breeding-with-farmed-fish-is-changing-the-life-cycle-of-wild-salmon/amp/?amp_js_v=a6&_gsa=1&usqp=mq331AQIKAGwASCAAgM%3D#aoh=16402666961348&csi=0&referrer=https%3A%2F%2Fwww.google.com&_tf=From%20%251%24s&share=https%3A%2F%2Fwww.newscientist.com%2Farticle%2F2302512-breeding-with-farmed-fish-is-changing-the-life-cycle-of-wild-salmon%2F
