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首页> 美国政府科技报告 >Smallmouth Bass in Streams: Strategies for High Quality Management. Job 3: Angling Survey of Trophy Smallmouth Bass Study Areas on Jacks Fork and Gasconade Rivers. Job 4: Strategies for Developing a Trophy Smallmouth Bass Fishery in Ozark Streams
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Smallmouth Bass in Streams: Strategies for High Quality Management. Job 3: Angling Survey of Trophy Smallmouth Bass Study Areas on Jacks Fork and Gasconade Rivers. Job 4: Strategies for Developing a Trophy Smallmouth Bass Fishery in Ozark Streams

机译：stremouth中的smallmouth Bass：高质量管理策略。工作3：Jacks Fork和Gasconade Rivers上Trophy smallmouth Bass研究区的钓鱼调查。工作4：在欧扎克溪流中开发战略小嘴巴斯渔业的策略

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An 18-inch minimum length limit and a one-fish daily creel limit were implemented for smallmouth bass on sections of the Jacks Fork and Gasconade rivers, January 1, 1995. Smallmouth bass populations were monitored during the period 1990 through 2001 with annual electrofishing samples and angler surveys. In the Gasconade River, population density of smallmouth bass increased and size structure improved after the 18-inch limit was established. In the Jacks Fork River, densities of smallmouth bass increased in the regulation area and one of the reference areas, but size structures remained similar throughout the study in all areas. Densities and size structures of rock bass populations in regulation areas of both rivers did not change during the study period. In both rivers, smallmouth bass growth rates did not change during the study. Anglers returned tags from 8 to 45 percent of the 11.5-inch and larger bass tagged each year, but voluntarily released 51 to 100 percent of them. Angler effort declined in the regulation area of the Jacks Fork River, but was variable in the Gasconade River. Catch and harvest of smallmouth bass declined in the regulation area of the Jacks Fork River, but increased in the last three years of the study in the Gasconade River regulation area.

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