Public Release: 

Climate and feeding behavior in lake trout

Proceedings of the National Academy of Sciences

An 11-year study of lake trout (Salvelinus namaycush), a cold-water fish, conducted at the Canadian International Institute for Sustainable Development Experimental Lakes Area found that during warmer years lake trout had reduced access to shallow water habitats, leading to a diet of relatively smaller prey and reduced growth, compared with cooler years, suggesting a link between climate change and top predators' feeding behavior and energy acquisition.


Article #17-02584: "Behavioral responses to annual temperature variation alter the dominant energy pathway, growth, and condition of a cold-water predator," by Matthew M. Guzzo, Paul Blanchfield, and Michael Rennie.

MEDIA CONTACT: Matthew M. Guzzo, University of Manitoba, Winnipeg, CANADA; tel: 204-951-2221; e-mail: <>

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