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b <br />0 <br />0 <br />C <br />0 <br />populations is fundamental to any program where production of fish is <br />intended. Genetic studies are underway that will provide the information <br />necessary to determine genetic status. Demographic and life history data for <br />all population groups will complete the formal status assessment. <br />300 <br />250 <br />206 <br />200 <br />Ir <br />w <br />CO <br />150 <br />Z <br />100 <br />50 <br />0 <br />24 17 19 30 07 <br />Z Z O 2 3 2 0 0 0 <br />74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 <br />YEAR <br />Figure 2. Razorback sucker captures from the upper Colorado River in the <br />Grand Valley between Loma and Palisade, Colorado (River Mile 152.8 <br />to 185.1), 1974-1991. Note: effort among years was not constant. <br />See Appendix; Table 2 for actual number of fish captured by <br />location and by year (figure courtesy of D. B. Osmundson). <br />7 <br />