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approximately 21 data sources that included sufficient data for some parameter <br />estimates. We also identified 7 data sources that allowed us to make estimates of total <br />or subpopulation estimates for three of the four fish species (obviously, no data exist <br />for Upper Basin Bonytail chub). Parameter estimates and their sources are detailed in <br />Tables 8, 9 and 11 in this report. <br />While we could find reliable data regarding adult survivorship and fecundity estimates <br />for most species, we were much less successful in generating reliable estimates for <br />survivorship for larval, YOY or 1-,2 and 3-yr old fish. Two and three year old fish have <br />not been targeted for specific sampling in most studies. While numerous studies exist <br />to sample larval and YOY dynamics, the study designs are inadequate to allow for <br />robust, reliable estimates of survivorship. A few notable mark-recapture studies have <br />been completed, but are very small in scope making extrapolation very uncertain. <br />Additionally, we could find very little information regarding sex ra#ios of the fish and <br />could find virtually no data regarding the proportion of 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 interannuaf variation could be changed to increase fish <br />populations to target values. Those values were provided by UDWR (Y. Converse, <br />personal communication). We report a range of value changes that could be employed <br />to reach-the various target populations and time frame over which those goals could be <br />met. Finally, based on input from a workshop held at Satt Lake City, Utah in June, <br />x <br />