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Powell between 1982 and 1985. U.S. Bureau of Reclamation and <br />Utah Division of Wildlife personnel captured, tagged, and <br />released 12 razorback suckers near the Piute Farms Marina boat <br />ramp in spring 1987 (Meyer and Moretti 1988, Roberts and Moretti <br />1989). Six of these fish were recaptured in that same season. <br />No additional specimens were captured in fall 1987 sampling <br />efforts. Spring 1988 collections produced four additional <br />razorback suckers and six recaptures from 1987. Recaptures in <br />both years suggested that the concentration was small and many <br />non-native predator species were found at this location (Meyer <br />and Moretti 1988, Roberts and Moretti 1989). Fourteen more <br />razorback sucker adults were captured in April 1990 in the San <br />Juan arm of Lake Powell (pers. comm., D. Knight, Utah Division of <br />Wildlife Resources). Eleven of these specimens were transported <br />to the Colorado River Fishes Propagation and Experiment Station <br />at Ouray, Utah, for brood stock, two fish died, and one escaped. <br />All of the males (n=10) were ripe (pers. comm., H. M. Tyus, U. S. <br />Fish and Wildlife Service). Many of the razorback suckers <br />collected in spring 1987 in the San Juan arm were also ripe <br />males, and this area may be used on an annual basis for <br />reproductive staging or spawning (Meyer and Moretti 1988, Roberts <br />and Moretti 1989). <br />Other San Juan River sub-basin records included seven <br />razorback suckers (including one recapture) collected in spring <br />1984 in the Dirty Devil arm of Lake Powell (U.S. Bureau of <br />Reclamation 1984). Four more were collected in spring 1990 in <br />17 <br />