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<br />Table 7. Adult Colorado pikeminnow 1998-2010 simulated length-frequency data (age-class structure negative response <br />scenario) <br /> <br />Age-class 1 Total Length Numbers of fish (n) in each totallenQth ranoe bv year <br />(vears) Ranoe (mm) 1998 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 <br /> 100-150 <br /> 150.200 <br /> 200-250 <br /> 250-300 <br /> 300-350 1 2 <br />5 350-400 2 1 1 <br />6 400-450 3 3 2 2 <br />7.8 450-500 2 2 2 1 1 <br />9-10 500-550 4 3 2 2 3 2 <br /> 550-600 5 4 3 1 2 3 3 <br /> 600-650 6 5 3 2 2 3 3 3 <br /> 650-700 3 4 4 3 2 2 2 2 2 <br /> 700-750 2 3 5 4 3 1 2 3 3 1 2 1 <br /> 750-800 1 2 3 4 3 2 3 3 2 2 2 2 <br /> 800-850 1 1 1 5 4 3 3 2 2 2 2 2 <br /> 850-900 1 1 2 3 2 3 2 3 2 2 2 <br /> 900-950 1 1 1 1 4 3 3 2 1 <br /> 950-1000 1 1 1 2 1 2 2 4 3 2 <br />Sample Size (N = Sum of n)= 29 29 26 22 25 23 19 19 18 13 15 12 9 <br />Number of 'Age'.classes (S)= 10 11 11 12 10 10 8 8 7 6 6 6 5 <br />Mean Total Lenoth2 (Ll= 563 577 635 684 717 734 743 775 828 867 872 871 869 <br /> <br />1 Age-classes are based on average length of fish of this age. Individual variability in growth rates may blur age-class boundaries (see text). <br />2 Mean total length was calculated by taking the sum of the products of the mid-point of each length range time the number of fish (n) in' each length <br />range, then dividing that sum by the total number of fish (N), <br /> <br />. <br /> <br />. <br /> <br />>-' <br />-l'> <br />