Food of anadromous brown trout at sea

By J. Knutsen, H. Knutsen, J. Gjøsæter, B. Jonsson. 2001

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The marine temperature and depth preferences of Arctic charr (Salvelinus alpinus) and sea trout (Salmo trutta), as recorded by data storage tags (2007, background): “In general, sea trout feed proportionally more on marine fish than on crustaceans and surface insects compared with Arctic charr (Pemberton, 1976; Grønvik and Klemetsen, 1987; Rikardsen et al., 2000, 2003, 2006; Knutsen et al., 2001; Rikardsen and Amundsen, 2005).”
Trophic relationships of exotic anadromous salmonids in the southern Patagonian Shelf as inferred from stable isotopes (2008, background): “In the North Atlantic Ocean, sea trout, which stay near estuaries, feed primarily on fish (Sprattus sprattus and Clupea harengus; Knutsen et al. 2001, 2004) a feeding behavior similar to that of coastal chinook populations in the North Pacific Ocean, whose diet in coastal waters from British…”
Migration speeds and orientation of Atlantic salmon and sea trout post-smolts in a Norwegian fjord system (2004, background): “In contrast, sea trout seem to remain in the inner fjord systems (e.g. Jonsson 1985, Knutsen et al. 2001), which may be the reason why we recorded what seemed to be a slower and less directed migration closer to shore for the sea trout than for the Atlantic salmon.”
Marine life of the sea trout (2016, background): “In southern Norway, sea trout fed most intensively in spring and early summer, but feeding declined from a high in May–June to a low in July (Knutsen et al. 2001).”