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Last modified
7/14/2009 5:02:30 PM
Creation date
5/22/2009 7:27:25 PM
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UCREFRP
UCREFRP Catalog Number
7406
Author
Bestgen, K. R.
Title
Status Review of the Razorback Sucker,
USFW Year
1990.
Copyright Material
NO
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Lake Powell just downstream of the Dirty Devil River and Colorado <br />River confluence and were taken to the Colorado River Fishes <br />Propagation and Experiment Station at Ouray, Utah (pers. comm., <br />R. D. Williams, U. S. Bureau of Reclamation). Sixteen razorback <br />suckers were collected in the Colorado River arm of Lake Powell <br />in 1981-82 (Persons and Bulkley 1982). <br />Colorado River Sub-basin--In the Colorado River sub-basin <br />(the mainstream Colorado River and its major tributaries, the <br />Dolores and Gunnison rivers), razorback suckers historically <br />occurred from present-day Lake Powell upstream to near Rifle, <br />Colorado. Razorback suckers were also found in the Gunnison <br />River upstream to at least the confluence with the Uncompahgre <br />River near Delta, Colorado (Hobbs and Miller 1953, Wiltzius 1978, <br />Holden 1980). No records exist for razorback suckers in the <br />Dolores River (Holden and Stalnaker 1975b). <br />Historic accounts noted that the razorback sucker was <br />moderately abundant in the Colorado River sub-basin prior to <br />about 1950 and Jordan (1891) suggested they were common in larger <br />mainstream sections. Razorback and flannelmouth suckers were <br />marketed for food in Grand Junction, Colorado (Ellis 1914), and a <br />local fisherman stated that from 1930 to 1950, his small <br />commercial fishery on the Gunnison River near Delta, Colorado, <br />supplied fish for mink food and caught "50 squawfish and large <br />numbers of razorback suckers in one of the better years" (Kidd <br />1977, Wiltzius 1978). Other accounts in the 1940's suggest that <br />thousands of razorback suckers could be seen in the spring, <br />18 <br />
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