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Biology, population structure, and estimated forage requirements of lake trout in Lake Michigan

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Biology, population structure, and estimated forage requirements of lake trout in Lake Michigan; 1983; Federal Government Series; TP; 111; Eck, Gary W.; Wells, LaRue

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Data collected during successive years (1971-79) of sampling lake trout (Salvelinus namaycush) in Lake Michigan were used to develop statistics on lake trout growth, maturity, and mortality, and to quantify seasonal lake trout food and food availability. These statistics were then combined with data on lake trout year-class strengths and age-specific food conversion efficiencies to compute production and forage fish consumption by lake trout in Lake Michigan during the 1979 growing season (i.e., 15 May-1 December). An estimated standing stock of 1,486 metric tons (t) at the beginning of the growing season produced an estimated 1,129 t of fish flesh during the period. The lake trout consumed an estimated 3,037 t of forage fish, to which [...]

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Type Scheme Key
local-index unknown tp111
local-pk unknown 37575
series unknown Technical Paper

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journalTechnical Paper
languageEnglish

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