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<br />timing of larval drift in the Upper Colorado River. It is not only the
<br />temperature at the time of hatching that appears critical, but also the
<br />temperature duri ng spawni ng, and egg development. A second pul se of
<br />drifting larvae at the Pal isade Site in 1984 suggests that the spawning
<br />event for that yeaf was split in two by a ShOft period of unfavorable water
<br />temperature.
<br />
<br />lITERATURE CITED
<br />
<br />Banks, J.L. 1964. Fish species distribution in Dinosaur National Monument
<br />during 1961-1962. M.S. Thesis, Colorado State University, Ft. Collins.
<br />96 pp.
<br />
<br />Gale, W. and H. Mohr Jr. 1978. Larval fish drift in a large river with
<br />comparison of sampling methods. Transactions of the Amefican Fisheries
<br />Society 112:280-285.
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<br />
<br />Geen, G., T. Northcote, G. Hartman, and C. Lindsey. 1966. Life histories of
<br />two species of Catostomid fishes in Sixteenmile lake, British Columbia,
<br />with particular reference to inlet stream spawning. Journal of
<br />Fisheries Research Board of Canada 23:1761-1788.
<br />
<br />Haynes, C.M., T.A. Lytle, LJ. Wick, and R.T. Muth. 1984. Larval Colorado
<br />squawfish (Ptychocheilus 1ucius Gifard) in the Upper Colorado River
<br />Basin, Colorado, 1979-1981. Southwestern Natural ist 29:21-34.
<br />
<br />Holden, P.B.
<br />squawfi sh.
<br />Co 1 orado.
<br />
<br />1977. Habitat requirements of juvenile Colorado River
<br />FWS/OBS-77/65, u.s. Fish and Wildlife Service, Denver,
<br />70 pp.
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<br />Radant, R.D., J.S. Cranney, R.G. Ruesink, and K. Rose. 1983. Colorado
<br />squawfish investigations, White River, Utah, Final Report. Utah
<br />Division of Wi ldlife Resources, Bureau of Land Management, Sal t lake
<br />City, Utah. 39 pp.
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<br />Snyder, D.E. 1981. Contributions to a guide to the cypriniform fish larvae
<br />of the Upper Colorado River System in Colorado. Department of Fishery
<br />and Wildlife Biology, Colorado State University, Ft. Collins; Bureau of
<br />Land Management Biological Sciences Series No.3. 81 pp.
<br />
<br />Tyus, H.M., C.W. McAda, and B.D. Burdick. 1982. Green River Fishery
<br />Investigations: 1979-1981, pp. 1-99 In W.H. Miller, D.L. Archer, and
<br />J.J. Valentine (eds.). Colorado River Fishery Project Final Report,
<br />Part 2: Field Investigations. U.S. Fish and Wildlife Service, Bureau
<br />of Reclamation, Salt Lake City, Utah.
<br />
<br />Vanicek, C.D. 1967. Ecological studies of native Green River fishes below
<br />Flaming Gorge Dam, 1964-1966. Ph.D. Dissertation, Utah State
<br />University, Logan. 124 pp.
<br />
<br />185
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