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<br />00281.5 <br /> <br />Table 2. Number and sizes (total length [TL]) of captive-reared razorback <br />sucker to be stocked into the Middle Green River in October, 1996, 1/ <br /> <br />Year class Mean TL (mm) Est. mean TL (mm) Est. number surviving to end <br /> 10/95 10/96 of crowinc season <br /> 1996 1997 1998 1999 2000 2001 <br />1989,90,91 267 350 250 fJ 200 160 128 102 82 <br />1993 95 200 200 Jj 100 80 64 51 41 <br />1994 213 300 300 i/ ISO 120 96 77 61 <br />1996 125 250 'i/ 75 38 30 24 19 <br /> Total adult fish Q/ 160 224 253 203 <br /> <br />1/ Estlmated survlval rates and mean total length at the end of each growlng <br />season are summarized in Table I. <br /> <br />fJ A subsampl e of fi sh wi 11 be checked for rel atedness to adult razorhack <br />sucker used for brood stock development usi ng DNA fi ngerpri nt i ng. The <br />results will be reviewed by the Genetics Panel for a recommendation for the <br />Biology Committee members to consider in making a management decision. <br /> <br />1/ Between 154 and 196 fish from four family lots of the 1993 year class were <br />stocked into the Middle Green River in October, 1995. The fish stocked in <br />1996 would increase the number stocked from each family lot to approximately <br />200 fish to equalize the number stocked per family lot. <br /> <br />i/ Reducing the number of fish in one family lot of razorback sucker for <br />broodstock development will provide approximately 300 fish for augmentation <br />stocking in the Middle Green River. <br /> <br />'i/ Progeny from one pedigreed family lot of razorback suckers produced in 1996 <br />will be stocked into the Middle Green River in October of 1996. Progeny <br />from the potential of 5 additional family lots produced in 1996 will be <br />reared for two years and stocked in October, 1997 (see Table 3). <br /> <br />Q/ Razorback suckers generally mature when they are about 425 mm or 17 inches <br />in total length when they would be considered to be adults. <br />