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<br /> <br />.'1'1:00, <br />.\;21Y1 !i~._.~...._m.."....."m~................2l120 . <br /> <br />~1I2.J. <br /> <br />....... ........................ tj'f~~.. <br /> <br />Figure 2. Estimated time to achieve recovery of the razorback sucker and bony tail. <br /> <br />3.0 OVERVIEW OF STOCKING PLANS <br /> <br />3.1 State of Colorado <br /> <br />The building blocks for the State of Colorado's stocking plan (Nesler 2001) were: recovery goal <br />abundance plus 3(1l1o buffer, survivorship curves per species, abundance target c~mposed of first <br />three mature age groups, priorities by species and river reach sites, and maintenance of a target of <br />three adult age groups for 3 years. The 30% buffer for razorback sucker is intended to <br />compensate for mortality, i.e., stocking rates should reflect anticipated mortalities. A target of <br />three adult age groups for 3 years should be maintained to the point where reproduction of <br />stocked fish occurs. Counting stocked fish should begin at this point. Stocking plan objectives <br />are to restore populations to unoccupied reaches within Colorado, augment very small <br />populations, and establish at least three adult age groups at recovery goal population abundance <br />levels. The benefits and benchmarks of the plan are identification of limiting factors pertaining <br />to spawning, reproduction, survival, and recruitment where low to non-existent population <br />numbers exist and attempted spawning and reproduction of viable eggs and larvae constitute the <br />first step in acquisition of natural function and self-sustaining status. <br /> <br />Razorback sucker.-Razorback sucker is the highest priority species (Priority 1). River reaches <br />to stock razorback sucker in priority are: 1) Colorado River - Rifle to Debeque; 2) Gunnison <br />River - Hartland to Redlands; and 3) Colorado River - Palisade to Stateline. All razorback <br />sucker should be 300+ mm TL, i.e., age 2+. Stocking should occur each fall for 5,480 razorback <br />sucker per reach for 8 years. <br /> <br />5 <br />