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<br />L` <br />1 <br />11 reclamation on 25 November was 296 individuals (298 total fish <br />9 1 <br />Production and Recruitment to Target Size <br />No reliable estimates are available for number of females involved <br />in spawning, number of ova produced, fertilization success, hatch, <br />or number of swim-up larvae produced in the Yuma Cove backwater. <br />Theoretical estimates could be derived on the basis of field and <br />hatchery data, but these could not realistically be extrapolated to <br />the situation at Yuma Cove. Further, estimates of juvenile <br />mortality rates also are unavailable (see below). However, samples <br />of razorback sucker were removed for genetic (mtDNA and allozyme) <br />analyses, which should provide a minimum estimate of the number of <br />females that produced the Yuma Cove fish. These last data will be <br />used to guide future propagation activities so that cove-reared <br />fish adequately reflect the genetic diversity of the adult <br />population in Lake Mohave. <br />Three independent, multiple census (Ricker 1975) estimates of <br />juvenile razorback sucker abundance were made using mark-recapture <br />data collected from 16 June to 29 July (Table 2). An "original <br />Schnable" estimate was 306 fish; a "modified Schnable" estimate was <br />276; and a "Schumacher-Eschmeyer" estimate was 329 fish (95% <br />confidence limits of 251-472 [t = 2.571, df = 5; Snedecor and <br />Cochran 1967] for the last estimate) . The total number of fish <br />removed to Davis Cove during sampling subsequent to 22 July and <br />'r <br /> <br /> <br /> <br />I <br /> <br /> <br /> <br /> <br /> <br />I <br />