Tom Quinn’s group works on the behavior, ecology, evolution, and conservation of fishes.  Most of their work is conducted on salmon, trout and char, investigating such topics as migratory behavior and homing, habitat requirements, factors affecting reproductive success, evolution of populations, straying and population expansion, and trophic ecology.  Their research blends a variety of field techniques including tagging, telemetry, direct observations, and a variety of sampling techniques with laboratory experiments and analysis of long-term datasets.



A completely revised edition of 2005 book, “The Behavior and Ecology of Pacific Salmon and Trout” will be published in fall 2018. The new edition will feature many new, outstanding photographs, updated and information, and enhanced coverage of trout and char as well as Pacific salmon. There have been many interesting and important discoveries since the first edition, and the new edition presents them.

Click to view a gallery of selected images from the new edition book


The Behavior and Ecology of Pacific Salmon and Trout should be on the shelf of anyone with a professional or personal interest in Pacific salmon and trout. Written in a technically accurate but engaging style, it appeals to a wide range of readers, including students, anglers, biologists, conservationists, legislators, and armchair naturalists.

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Select Publications

Cunningham, C.J., G.T. Ruggerone, and T.P. Quinn. 2013. Size selectivity of predation by brown bears depends on the density of their sockeye salmon prey. The American Naturalist. 181(5): 663-673. pdf

Bond, M.H., J.A. Miller, and T.P. Quinn. 2015. Beyond dichotomous life histories in partially migrating populations: cessation of anadromy in a long-lived fish. Ecology 96(7): 1899-1910. pdf

Goetz, F.A., E. Jeanes, M.E. Moore, T.P. Quinn. 2015. Comparative migratory behavior and survival of wild and hatchery steelhead (Oncorhynchus mykiss) smolts in riverine, estuarine, and marine habitats of Puget Sound, Washington. Environmental Biology of Fishes. 98: 357-375. pdf

Berdahl, A., P. A. H. Westley, and T. P. Quinn. 2017. Social interactions shape the timing of spawning migrations in an anadromous fish. Animal Behaviour 126: 221-229. pdf

Hovel, R. A., S. M. Carlson and T. P. Quinn. 2017. Climate change alters the reproductive phenology and investment of a lacustrine fish, the threespine stickleback. Global Change Biology 23: 2308-2320. pdf

Quinn, T. P., C. J. Cunningham, and A. J. Wirsing. 2017. Diverse foraging opportunities drive the functional response of local and landscape-scale bear predation on Pacific salmon. Oecologia 183: 415-429. pdf

Tillotson, M. and T. P. Quinn. 2018. Selection on the timing of migration and breeding: A neglected aspect of fishing-induced evolution and trait change. Fish and Fisheries 19: 170-181. pdf