在池塘饲养的孵化场生产的海喉鳟鱼与标准或挡板跑道的回报率

The Progressive Fish-culturist Pub Date : 1998-03-01 DOI:10.1577/1548-8640(1998)060<0109:RROHPS>2.0.CO;2

J. Tipping

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引用次数: 18

摘要

摘要:在华盛顿州考利茨鳟鱼孵化场的一个池塘里，饲养海喉鳟鱼Oncorhynchus clarki，并将其从一个砾石-泥土底部、一个标准的混凝土跑道和一个带有挡板的跑道中释放出来。两个放生年的成鱼收益率表明，饲养池的成鱼成活率(3.2%)显著高于标准沟道(2.0%)，标准沟道的成鱼收益率显著高于挡板沟道(1.7%)。

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Return Rates of Hatchery-Produced Sea-Run Cutthroat Trout Reared in a Pond versus a Standard or Baffled Raceway

Abstract Sea-run cutthroat trout Oncorhynchus clarki were reared in and released from a pond with a gravel–earth bottom, a standard concrete raceway, and a raceway with baffles at the Cowlitz Trout Hatchery, Washington. Adult returns from two release years showed that significantly more fish from the rearing pond survived (3.2%) than fish reared in standard raceways (2.0%) and that significantly more fish returned from the standard raceway than from the baffled raceway (1.7%).

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The Progressive Fish-culturist

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