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31 May 2019 Observations on the Growth, Condition, and Ecology of Lake Trout in Quabbin Reservoir, Massachusetts
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Abstract

I report observations on the ecology and trends in growth and relative condition of Salvelinus namaycush (Lake Trout) in Quabbin Reservoir garnered from over 60 y of almost continuous monitoring. Fish were captured using gillnets during the spawn in late October and early November in 10–15 m of water. Spawning began when waters reached 17 °C, but activity was most intense between 11 °C and 13 °C. Spawning fish were 4–24 y old, and catches were typically comprised of 89.5% males. Male Lake Trout generally reached 457 mm (18 in; legal harvest size) by age 5, and since 2010, average growth of mature males was 5.8 mm per year. Length-at-capture and density have declined over the period of record but rose and fell over shorter intervals, likely in response to forage abundance, mainly Osmerus mordax (Rainbow Smelt).

Jason T. Stolarski "Observations on the Growth, Condition, and Ecology of Lake Trout in Quabbin Reservoir, Massachusetts," Northeastern Naturalist 26(2), 362-378, (31 May 2019). https://doi.org/10.1656/045.026.0210
Published: 31 May 2019
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