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1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />1 <br />r <br />i <br />r <br />Fig re Description Pa g! <br />26. Length-weight relationships for channel catfish in the Yampa <br />River by year and by river reach. 87 <br />27. Length-weight regression coefficients with 95 % confidence <br />intervals for channel catfish in the Yampa River by year and by <br />river reach. 89 <br />28. Average lengths and condition factors for channel catfish in <br />the Yampa River by year and river reach. 91 <br />29. Relative weight indices (Wr) for channel catfish by year and <br />river reach. 94 <br />30. Food habits of channel catfish in the Yampa River by major <br />food groups and decreasing order of abundance within the <br />"Other" group. 96 <br />31. Colorado squawfish and roundtail chub vulnerability to <br />predation by channel catfish based on gape and body area <br />comparisons. 100 <br />32. Bluehead sucker and flannelmouth sucker vulnerability to <br />predation by channel catfish based on gape and body area <br />comparisons. 102 <br />33. White sucker and common carp vulnerability to predation by <br />channel catfish based on gape and body area comparisons. 104 <br />34. Relative vulnerability of potential fish prey species to channel <br />catfish predation based on percentage of predator population with <br />adequate gape area to ingest prey species individuals with <br />smallest, median, and largest cross-sectional body areas. 106 <br />35. Changes in numbers of each fish species caught during <br />multiple sampling of the tributary backwater at Morgan <br />Gulch (RM 103.4). 121 <br />36. Changes in numbers of each fish species caught during <br />multiple sampling of the tributary backwater at Lay Creek <br />(RM 88.2). 124 <br />ix