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首页> 外文期刊>North American Journal of Fisheries Management >Contribution of Stocked Yearling Walleyes to the Fishery in Oneida Lake, New York
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Contribution of Stocked Yearling Walleyes to the Fishery in Oneida Lake, New York

机译：放养的一岁角膜白斑对纽约奥尼达湖渔业的贡献

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摘要

Absolute estimates of stocked fish contributions to fisheries are important in determining the utility of stocking programs. Accounts of stocked fish contribution to fisheries are rare; such studies require (1) stocked fish to be uniquely marked so that they are identifiable when the cohort recruits to the fishery and (2) absolute abundance estimates to be available both from stocked fish and fish produced from other sources. Our objective was to assess the absolute contribution of walleyes Sander vitreus stocked as yearlings to the age-4 population in Oneida Lake, New York. Stocked yearlings contributed 1,778 fish to the age-4 population, which was estimated at 127,000. Estimated survival from stocking (age 1) to age 4 was 1.7% (range = 0.2-3.2%) and was similar to reports of the absolute contribution of fingerling stocking programs. Our results support findings from other studies indicating that attempts to strengthen walleye year-classes by stocking have had limited success; however, our data are based on only one year-class. Documented variability in stocking success on other systems warrants further investigation.
机译：对鱼类放养对渔业的贡献的绝对估算对于确定放养计划的效用很重要。鱼类放养对渔业的贡献很少见;此类研究要求（1）对鱼类种群进行独特的标记，以便当该队列的新兵加入该渔业时可以对其进行识别，并且（2）可以从鱼类种群和其他来源生产的鱼类中获得绝对丰度估计。我们的目标是评估作为一岁幼龄饲养的角膜白斑对纽约奥尼达湖4岁人口的绝对贡献。放养的一岁仔鱼为4岁以下人口提供了1,778条鱼，估计为127,000。从放养（1岁）到4岁的估计生存率为1.7％（范围= 0.2-3.2％），与鱼种放养计划的绝对贡献的报告相似。我们的结果支持其他研究的结果，这些研究表明，通过放养来加强角膜白斑年级的尝试取得了有限的成功。但是，我们的数据仅基于一年级。记录在其他系统上的库存成功可变性值得进一步研究。

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