Cutthroat Trout: Evolutionary Biology and Taxonomy


SKU: 51036P Category:


Edited by Patrick Trotter, Peter Bisson, Luke Shultz, and Brett Roper.

362 pp, paper, index
Special Publication 36
ISBN-13: 978-1-934874-50-9
Published September 2018


List price: $79
AFS member price: $55

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The Cutthroat Trout is an important western North American fish species whose numbers are seriously depressed.  Recently, data from new molecular taxonomy methods have revealed greater differentiation and diversity in Cutthroat Trout than previously detected.  In 2015, the Western Division of the American Fisheries Society convened a special workshop to consider the different viewpoints, reconcile differing interpretations of the evidence, and, if deemed necessary, offer a revised classification of Cutthroat Trout.

The book brings together the latest available evidence for Cutthroat Trout evolutionary history and current levels of genetic diversity.  It confirms the need for a revised classification of Cutthroat Trout, and proposes a revised phylogeny with four deep evolutionary divergences. It presents arguments (pro and con) for classifying the four major lineages themselves as full species, and for delineating each of the 25 modern subunits.

This work will be of value to anyone with interest in the fields of taxonomy, systematics, evolutionary biology and genetics, phylogenetics, molecular biology and genetics, and to fisheries biologists and managers at all levels from student to longtime professionals.


A Special Workshop on the Taxonomy and Evolutionary Biology of Cutthroat Trout (Patrick Trotter, Peter Bison, Brett Roper, Luke Schultz, Carl Ferraris, Gerald R. Smith, and Ralph F. Stearley)

Species Conceptualization and Delimitation: A Framework for the Taxonomic Revision of Cutthroat Trout (Sierra M. Love Stowell, Jessica L. Metcalf, Douglas F. Markle, and Andrew P. Martin)

Geologic Constraints on Snake–Columbia River Drainage Changes and the Associated Evolutionary Diversification of Cutthroat Trout over the Past 17 Million Years (Paul K. Link and Ernest R. Keeley)

The Fossil Record of Cutthroat Trout: Implications for Evolution and Conservation (Gerald R. Smith and Ralph F. Stearley)

Historical Studies on Cutthroat Trout Taxonomy Based on Morphological-Meristic Characters, Allozymes, and Chromosomes (Gary H. Thorgaard, Kevin R. Bestgen, Patrick Trotter, Eric J. Loudenslager, and Paul A. Wheeler)

Geographic Variation, Isolation, and Evolution of Cutthroat Trout with Comments on Future Directions for Management and Research (Dennis K. Shiozawa, R. Paul Evans, Derek D. Houston, and Peter J. Unmack)

Y Chromosome Marker Evolution in Cutthroat Trout (Gary H. Thorgaard, Joseph P. Brunelli, Nolan R. Smith, and Bobbi M. Johnson)

An Interim Classification of the Cutthroat Trout Complex, Oncorhynchus clarkii Sensu Lato, with Comments on Nomenclature (Douglas F. Markle)

Diversity of Coastal Cutthroat Trout across Their Distributional Range (Thomas H. Williams, Kitty E. Griswold, Ernest R. Keeley, Kenneth P. Currens, and Gordon H. Reeves)

The Lahontan Basin Evolutionary Lineage of Cutthroat Trout (Mary M. Peacock, Helen M. Neville, and Amanda J. Finger)

The Phylogeography of Westslope Cutthroat Trout (Michael K. Young, Kevin S. McKelvey, Tara Jennings, Katie Carter, Richard Cronn, Ernest R. Keeley, Janet L. Loxterman, Kristine L. Pilgrim, and Michael K. Schwartz)

Describing and Preserving the Diversity of Cutthroat Trout in the Yellowstone River, Snake River, and Bonneville Basin (Matthew R. Campbell, Ernest R. Keeley, Christine C. Kozfkay, Janet L. Loxterman, Paul R. Evans, and Dennis K. Shiozawa)

Cutthroat Trout Diversity in the Southern Rocky Mountains (Kevin B. Rogers, Kevin R. Bestgen, Sierra M. Love Stowell, and Andrew P. Martin)

Where the Rubber Meets the Road: Further Research Needs and Implications for Cutthroat Trout Management (Luke Schultz, Neil F. Thompson, C. Nathan Cathcart, and Thomas H. Williams)