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rivers of the basin (e.g. the Yampa, Green, Gila, and Colorado riv-
<br />ers) . May (1970`)rep'bited several small Colorado squawfish (100
<br />to 200 mm total length) in the White River near the mouth of
<br />Piceance Creek. Adults have been reported at the mouths of the
<br />White, Uinta, and Duchesne rivers (Seethaler 1978). We do not
<br />know whether the small Colorado squawfish was spawned in the
<br />San Rafael River or moved upstream from the Green River.
<br />We thank Al $eggen of the Utah Division of Wildlife Resources for his
<br />coordination efforts during the course of the study; Richard Wydoski, Utah
<br />Cooperative Fishery Research Unit, who helped organize the study; and Paul
<br />Holden, Bio/West Inc., who confirmed our identification of the Colorado squaw-
<br />fish.
<br />LITERATURE QTED
<br />CROSS, J. N. 1976. Status of the native fish fauna of the Moapa River (Clark
<br />County, Nevada). Trans. Am. Fish. Soc. 105:503--508.
<br />DEACON, J. E., and W. G. BRADLEY. 1972. Ecological distribution of fishes
<br />of Moapa (Muddy) River in Clark County, Nevada. Trans. Am. Fish. Soc. 101:
<br />408-419.
<br />DEACON, J. E., and W. L. HINCKLEY. 1974. Desert Fishes. Pp. 385-488, in
<br />Desert Biology, Vol. II (G. W. Brown, Jr., ed.), Academic Press, New York.
<br />DEACON, J. E., C. HUBBS, and B. J. Zahuranec. 1964. Some effects of in-
<br />troduced fishes on the native fish fauna of southern Nevada. Copeia 1964:384-
<br />388.
<br />GUNNING, G. E., and T. M. BERRA. 1969. Fish repopulation of experi-
<br />mentally decimated segments in the headwaters of two streams. Trans. Am.
<br />Fish. Soc. 98:305-308.
<br />HOLDEN, P. B., and C. B. STALNAKER. 1975. Distribution and abundance
<br />of mainstream fishes of the middle and upper Colorado River basin, 1967-1973.
<br />Trans. Am. Fish. Soc. 104:217-231.
<br />KRUMHOLZ, L. A., and W. L. HINCKLEY. 1964. Changes in the fish
<br />population in the upper Ohio River following temporary pollution abatement.
<br />Trans. Am. Fish. Soc. 93:1-5.
<br />LARIMORE, R. W., W. F. CHILDERS, and C. HECKROTTE. 1959. Destruc-
<br />tion and re-establishment of stream fish and invertebrates affected by drought.
<br />Trans. Am. Fish. Soc. 88:261-285.
<br />MAY, B. E. 1970. Biota and chemistry of Piceance Creek. Unpubl. M.S. thesis,
<br />Colorado State Univ., Fort Collinsi, 152 pp.
<br />HINCKLEY, W. L. 1973. Fishes of Arizona. Ariz. Game Fish Dept., Fhoenix,
<br />293 pp.
<br />NATIONAL OCEANIC and ATMOSPHERIC ADMINISTRATION. 1977.
<br />Climatological data, annual summary: Utah. U.S. Dept. Commerce, Nat. Oceanic
<br />Atmos. Admin., Environ. Data Serv. 79:1-16.
<br />OLMSTEAD, L. L., end D. G. CLOUTMAN. 1974. Aepopulation after a nsn
<br />kill in Mud Creek, Washington County(, Arkansas, following pesticide pollution.
<br />Trans. Am. Fish. Soc. 103:79-87. ~
<br />PHINNEY, D. E., 1975 Repopulation of an eradicated stream section by brook
<br />trout. Trans. Am. Fish. Soc. 104:685-687.
<br />SEETHALER, K. H. 1978. Life history and ecology of the Colorado squawfish
<br />(Ptychocheilus Lucius) in the upper Colorado River basin. Unpubl. M.S. thesis,
<br />Utah State Univ., Logan, 156 pp. '
<br />U.S. DEPARTMENT OF THE INTERIOR. 1973. Threatened wildlife of the
<br />United States. U.S. Fish and Wildl. Serv., Res. Publ. 114, 289 pp.
<br />U.S. GEOLOGICAL SURVEY 1971-1975. Water resources data for Utah, Part
<br />1. Surface water records of Utah. U.S. Geol. Surv., Water Resour. Div., Salt
<br />Lake City, various pagination.
<br />UTAH STATE ENGINEER. ND. Normal annual precipitation map, 1931-60:
<br />State of Utah, 1 p.
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