Record Display for the EPA National Library Catalog


Main Title Equilibrium yield and management of cutthroat trout in Yellowstone Lake,
Author Benson, Norman Gustaf,
Other Authors
Author Title of a Work
Bulkley, Ross V.,
Publisher United States Fish and Wildlife Service,
Year Published 1963
OCLC Number 00000004
Subjects Cutthroat trout ; Fishery management--Wyoming ; Fishes--Wyoming--Yellowstone Lake
Internet Access
Description Access URL
HathiTrust Digital Library;view=1up;seq=5
Library Call Number Additional Info Location Last
ELBM  SH11.A3 1963 no.62 AWBERC Library/Cincinnati,OH 04/13/2020
Collation iv, 44 pages illustrations, map 26 cm
Includes bibliographical references (pages 37-38).
Contents Notes
Introduction -- Yellowstone Lake fishery -- Yellowstone River fishery -- Summary -- Literature cited -- Appendix A, Distribution of fishing -- Appendix B, Maturity of fish in catch -- Appendix C, Growth increments -- Appendix D, Year-class strength -- Appendix E, Catch curves. Equilibrium yield of the cutthroat trout, Salmo clarki lewisi Girard, in Yellowstone Lake, Wyo., is determined from data on catch and spawning runs from 1945 to 1961. Changes in growth rate, spawning runs, mortality rates, and year-class strength are related to differences in total catch. Three stages of exploitation of the stock are defined and the maximum safe catch or equilibrium yield is estimated at 325,000 trout. Management of the sport fishery according to equilibrium yield is discussed with reference to regulations, distribution of fishing pressure, planting, and interspecific competition. The Yellowstone River fishery is treated briefly.