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Threinen 1952; Scidmore and Woods 1961). Over 3 years, Huish <br />(1959) removed 162,364 kg of fish by.seining in Lake Reedy, <br />Florida, but had no effect,on catch of sport fishes by anglers. <br />Rawson and Elsey (1950) removed 27,597 longnose sucker with gill <br />nets and wire-mesh traps from Pyramid Lake, Alberta. Although <br />the age structure of longnose sucker was altered, the fishery for <br />rainbow trout Oncorhynchus mykiss did not improve. Scidmore <br />(1960) did not observe an increase in average size of bluegill <br />after removal of undesirable fishes by seining and trap-netting <br />in two Minnesota lakes. <br />Commercial and recreational fishing has been used to <br />selectively reduce fish populations. Donald and Alger '(1989) <br />reported that fish in a population of stunted brook trout <br />increased in maximum weight from 68 g to 158 g after the <br />population was exploited at an annual rate of 20% fishing <br />mortality for 3 years. In Lake Traverse, Minnesota and South <br />Dakota, weight of common carp per seine haul decreased from <br />11,757 kg to 231 kg after 13 years of commercial fishing for the <br />species with hoopnets and seines (Moyle and Clothier 1959). In <br />an Ohio lake, fishing regulations were liberalized to reduce <br />undesirable fish and improve the size structure of populations of <br />bluegill and largemouth bass (Pelton 1948). <br />Mechanical removal attempts have met with varying success <br />because only a portion of the population is typically removed. A <br />large percentage of fish in the target population must be removed <br />to achieve partial/temporary control. In a northeastern <br />27