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USGS · 1000557

Lake Superior revisited 1984

Wayne R. MacCallum·James H. Selgeby
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Abstract

The Lake Superior fish community has changed substantially since the early 1960s, when control of the sea lamprey ( Petromyzon marinus ) became effective. Self-reproducing stocks of lake trout ( Salvelinus namaycush ) have been reestablished in many inshore areas, although they have not yet reached pre-sea lamprey abundance; offshore lake trout are probably at or near pre-sea lamprey abundance. Stocks of lake whitefish ( Coregonus clupeaformis ) appear to have fully recovered; commercial catches are at or above historical levels. Lake herring ( Coregonus artedii ) are recovering rapidly in U.S. waters and are abundant in western Canadian waters. The population of rainbow smelt ( Osmerus mordax ), which declined in the 1970s, is recovering. Pacific salmon ( Oncorhynchus ) are becoming more abundant as a result of increased stocking in U.S. waters and are reproducing in most suitable tributaries; they have become significant in anglers' creels.

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Canadian Journal of Fisheries and Aquatic SciencesArticle

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Wayne R. MacCallum, James H. Selgeby. 1987. Lake Superior revisited 1984. https://doi.org/10.1139/f87-306

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