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<br />migratory requirements and its capacity to adapt
<br />to fish passageways and modified habitats.
<br />
<br />ACKNOWLEDGEMENTS
<br />
<br />The information provided was obtained as a
<br />result of studies accomplished by the Colorado
<br />River Fishery Project, U.S. Fish and Wildlife
<br />Service. This project was supported by the U.S.
<br />Bureau of Reclamation, U.S. Fish and Wildlife Ser-
<br />vice, U.S. Bureau of Land Management and the U.S.
<br />National Park Service, working in cooperation
<br />with the states of Colorado and Utah. Special
<br />appreciation is given to Bob D. Burdick who draft-
<br />ed the illustrations and provided comments to the
<br />manuscri pt.
<br />
<br />LITERATURE CITED
<br />
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<br />Colorado River Fishes Recovery Team. 1978. Colo-
<br />rado Squawfish Recovery Plan. U.S. Fish and
<br />Wildl. Serv., Washington, D. C.
<br />Eicher, G. J. 1970. Fish Passage. P163-171 IN:
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<br />North America. Spec. publ. No.7 Amer. Fish.
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<br />Holden, P. B., and C. L. Stalnaker. 1975. Distri-
<br />bution and abundance of mainstem fishes of
<br />the middle and upper Colorado River basin,
<br />1967-1973. Trans. Amer. Fish. Soc. 104(2):
<br />217 -231.
<br />Iorns, W. V., C. H. Hembree, and G. L. Oakland.
<br />1965. Water resources of the upper Colorado
<br />River Basin. U.S. Geolog. Surv., Prof.
<br />pap. 441.
<br />Joseph, T. W., J. A. Sinning, R. J. Behnke, and
<br />P. B. Holden, 1977. An evaluation of the
<br />status, life history, and habitat require-
<br />ments of endangered and threatened fishes of
<br />the upper Colorado River System. U.S. Fish
<br />and Wildl. Servo Publ. FWS/OBS-77/62.
<br />McDonald, D. B., and P. A. Dotson. 1960. Fishery
<br />investigations of the Glen Canyon and Flaming
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<br />Miller, W. H., H. M. Tyus, and C. W. McAda. 1983a.
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<br />White and Yampa Rivers, Colorado and Utah.
<br />U.S. Fish and Wildl. Serv., Salt Lake City,
<br />Utah. '
<br />Miller, W. H., H. M. Tyus, and L. R. Kaeding.
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<br />Fish and Game Dept., Sacramento, California
<br />
<br />e
<br />
<br />Nikolsky, G. V. 1961. Special ichtho10gy. 2nd
<br />Edition. Israeli prog. for scien. trans.
<br />Jerusalem. (Trans1antedfrom Russian).
<br />Radant, R. D., J. S. Cranney, R. G. Ruesink, and
<br />K. Rose, 1982. Colorado squawfish investiga-
<br />tions - White River, Utah. Utah Nat. Resour.,
<br />Salt Lake City, Utah.
<br />Seethaler, K. 1978. Life history and ecology of
<br />the Colorado squawfish (Ptychochei1us Iucius)
<br />in the upper Colorado River Basin. M. S.
<br />Thesis. Utah State University, Logan, Utah
<br />Sigler, W. F., and R. R. Miller. 1963. Fishes of
<br />Utah. Utah Depart. Fish and Game, Salt Lake
<br />City, Utah
<br />Tyus, H. M., B. D. Burdick, R. A. Valdez, C. M.
<br />Hayes, T. A. Lytle, and C. R. Berry. 1982a.
<br />Fishes of the upper Colorado River Basin:
<br />Distribution, Abundance and Status. pp 12-70,
<br />in Miller, W. H., H. M. Tyus, and C. A. Carlson
<br />-reds). Fishes of the upper Colorado River
<br />System: Present and Future. Western Div. Amer.
<br />Fish. Soc., Bethesda, Maryland.
<br />Tyus, H. M., E. J. Wick, and D. L. Skates, 1982b.
<br />A spawning migration of Colorado squawfish
<br />(Ptychochei1us 1ucius) in the Yampa and Green
<br />Rivers, Colorado aRd Utah, 1981. Proc. Desert
<br />Fisnes Council Vol. XIII. IN PRESS.
<br />Tyus, H. M., C. W. McAda, and B. D. Burdick. 1982c.
<br />Green River Fishery Investigations: 1979-1981,
<br />Pages 1-99 in U.S. Fish and Wi1d1. Servo and
<br />Bur. of RecTam., Part 2, Colo. River Fish.
<br />Proj., Final Report. Salt Lake City, Utah
<br />United States Fish and Wildlife Service. 1974.
<br />Colorado squawfish: Determination as an en-
<br />dangered species. Fed. Reg. 39(3):1175.
<br />
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