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United States Department of
Agriculture
Forest Service
Rocky Mountain Research Station
General Technical Report
RMRS-GTR-88WWW
Version 1.0 -- January 2002
Citation
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Recovery History of Greenback
Cutthroat Trout: Population Characteristics, Hatchery Involvement,
and Bibliography
Michael K. Young
Amy L. Harig
Bruce Rosenlund
Chris Kennedy
Abstract
The greenback cutthroat trout (Oncorhynchus clarki stomias)
is native to the mountain and foothill waters of the South Platte
and Arkansas river basins in Colorado. This taxon declined rapidly
beginning near the turn of the century and was listed under the
Endangered Species Act in 1973. We assembled all available information
from a variety of sources to document recovery efforts from 1957
to 1999. For each greenback cutthroat trout population, we noted
(1) the characteristics of recovery waters and dates of population
discovery or introduction; (2) fish abundance estimates; (3)
analyses of genetic purity; (4) salmonid fauna, removal efforts,
and reinvasions; and (5) dates, sources, and numbers of fish
used to establish populations. For each hatchery used to assist
recovery, we noted (1) sources and numbers of fish delivered
to them; (2) sources, sex ratios, and production of fish used
to create particular year classes; and (3) dates, numbers, and
sizes of hatchery fish shipped to establish wild populations
or supplement other hatchery stocks.
Keywords: threatened species, greenback cutthroat trout, Oncorhynchus
clarki stomias, recovery
The Authors
Michael K. Young is with the Rocky Mountain Research
Station in Laramie, Wyoming. Amy L. Harig is with Trout
Unlimited in Boulder, Colorado. Bruce Rosenlund and Chris
Kennedy are with the Colorado Fish and Wildlife Assistance
Office of the U.S. Fish and Wildlife Service in Lakewood, Colorado.
Acknowledgments
We thank the following individuals for providing data or for
other contributions to this report: Robert Behnke, Kevin Bestgen,
Mindy Clark, Stephanie Comfort, Karl Cordova, Steven Culver,
Pat Dwyer, Kurt Fausch, Pete Gallagher, Paula Guenther-Gloss,
Larry Harris, Ken Kehmeier, Doug Krieger, Bill Krise, Jim Melby,
Tom Nesler, Greg Policky, Nick Schmal, Phil Schler, Ed Stege,
Harry Vermillion, Mary Kay Watry, and David Winters.
Introduction
Methods
Results
and Discussion
References
Tables
About RMRS
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Title: RMRS-GTR-88WWW:
Recovery History of Greenback Cutthroat Trout: Population Characteristics,
Hatchery Involvement, and Bibliography
Electronic Publish Date: January 22, 2002
Last Update: August
18, 2008
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