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1 <br />1 <br />1 <br /> <br />L <br />J <br /> <br />1 <br /> <br />1 <br /> <br /> <br /> <br />t <br /> <br />1 <br />1 <br /> <br />been targeted for specific sampling in most studies. It is difficult to sample dynamics <br />and make estimates of survivorship. A few notable mark-recapture studies have been <br />completed, but are very small in scope making extrapolation uncertain. We found little <br />information on sex ratios of the fish and virtually no data regarding the proportion of <br />adults that spawn each year. <br />As part of our initial model sensitivity analyses, we used the models to determine how <br />survivorship means and interannual variation could be changed to increase fish <br />populations to target values. Those values were provided by UDWR (Y. Converse, <br />pers. commun.). We reported a range of value changes that could be employed to <br />reach the various target populations and time frame over which those goals could be <br />met. Finally, based on input from a June, 1997 workshop in Salt Lake City, Utah, we <br />ran simulations to determine the numbers of adults that would be required to ensure <br />(with 95% certainty) that each subpopulation of each species would reach an effective <br />population size of at least 500 (see accompanying UDWR report). For those <br />simulations, target values of 1330 adult fish, based on a 3 female to 1 male sex ratio <br />and 50% spawner frequency, for each subpopulation were generated. Total adults <br />required to reach those population levels were generated and are reported in the <br />UDWR report. <br />xi <br />I~ J <br />