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Table 7. Numbers and percent composition by biomass of nonnative fish species <br />collected in each experimental enclosure in the Baeser floodplain wetland, <br />Green River (RM 273): 2004. <br />Enclosure Carp Fathead <br />minnows Green sunfish Shiners <br /> # % # % # % # % <br />lA 5392 96.4 14 0.3 184 3.3 4 0.1 <br />1B 4712 67.9 156 2.3 2069 29.8 0 0 <br />ZA 6138 91.6 96 1.4 458 6.8 9 0.1 <br />2B 7895 80.8 373 3.8 1494 15.3 6 0.1 <br />3A 10348 90.3 1024 8.9 82 0.7 0 0 <br />3B 8654 78.5 2345 21.3 10 0.1 8 0.1 <br />4A 5922 71.0 2081 23.0 328 3.9 6 0.1 <br />4B 3916 55.7 2599 36.9 285 4.1 202 2.9 <br />SA 8575 48.1 1840 10.3 7410 41.5 15 0.1 <br />SB 4255 30.5 5731 41.0 3894 27.9 92 0.7 <br />6A 6672 70.9 2710 28.8 17 0.2 8 0.1 <br />6B 6391 73.2 1856 21.3 488 5.6 1 0.01 <br />Average 71.24 16.61 11.6 0.36 <br />Total 78870 20825 16719 351 <br />Razorback Sucker Survival and Growth <br />In 2004, larval razorback sucker survival was confirmed in all twelve enclosures <br />(Table 8 and Figure 1). Depletion of razorback sucker and bonytail was achieved <br />through multiple sampling of each enclosure. All enclosures, with the exception of the <br />two high density enclosures stocked at a density of 40,000 larvae/acre, showed sufficient <br />depletion to allow an abundance estimate using linear regression (Table 8). Survival <br />ranged from 58% in an enclosure where larvae were stocked at a density of 800 <br />larvae/acre to 2% in the highest density enclosure where larvae were introduced at a <br />density of 40,000 larvae/acre. <br />The survival estimate of 58% for the enclosure where larvae were introduced at a <br />density of 8001arvae/acre is significantly higher (Student's t, P < 0.01) than the survival <br />estimates of the other enclosures. There was no statistically significant difference in the <br />15 <br />