Abstract
Abstract We assessed selected aspects of the population dynamics of smallmouth bass Micropterus dolomieu and channel catfish Ictalurus punctatus in a tailwater stream at a relatively high elevation (> 1,286 m above mean sea level) where these species were introduced to enhance sport fishing. Water temperatures in the stream exceeded 16°C for 102–135 d (range for three stations) and 20°C for 16–38 d during 1992. Smallmouth bass exhibited low proportional stock density (PSD), moderate relative weight (Wr ), very slow growth, and successful reproduction. Channel catfish had high PSD, moderately high Wr , and rapid growth, but spawned late in the year and the young were too small to survive their first winter. Stocked channel catfish were larger and able to recruit to age 1. The high PSD of channel catfish was attributable to survival and growth of' stocked fingerlings. Maintenance of a channel catfish fishery will require routine stocking. The slow growth of smallmouth bass will provide a limited fishery, ev...
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