Growth and feeding dynamics of lake sturgeon, Acipenser fulvescens, in Oneida Lake, New York:: results from the first five years of a restoration program
Growth and feeding dynamics of lake sturgeon, Acipenser fulvescens, in Oneida Lake, New York:: results from the first five years of a restoration program
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DOI：
10.1046/j.1439-0426.2002.00394.x
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发表时间：
2002-12-01
影响因子：
0.9
通讯作者：
Rudstam, LG
中科院分区：
文献类型：
--
作者：
Jackson, JR;VanDeValk, AJ;Rudstam, LG
对纽约奥奈达湖鲟鱼恢复计划的评估表明，已建立了一个庞大、快速增长的幼鱼种群。自1996年以来，即恢复计划启动后的第二年，湖鲟的捕捞量显示，1-5岁的湖鲟正以每年145毫米的速度增长，明显快于其他有数据的种群。同样，以体重为基础的状况衡量标准表明，人口拥有丰富的食物资源。端足类是最常见的饮食项目，斑马贻贝成为重要的青少年湖鲟鱼大于700毫米的饮食。湖鲟鱼对异国情调的斑马贻贝的可能影响值得进一步研究。如果有合适的产卵栖息地，目前的数据表明奥奈达湖有可能支持湖鲟的自我维持人口。
Assessments of a lake sturgeon restoration program in Oneida Lake, New York, indicate the establishment of a large, fastgrowing population of juvenile fish. Catches of lake sturgeon since 1996, the year after the restoration program was initiated, have revealed that age 1-5 lake sturgeon are growing at a rate of 145 mm year(-1), significantly faster than other populations for which data are available. Similarly, weight-based measures of condition suggest a population with abundant food resources. Amphipods were the most common diet item, with zebra mussels becoming important in the diets of juvenile lake sturgeon larger than 700 mm. The possible impact of lake sturgeon on the exotic zebra mussel warrants further study. If suitable spawning habitat is available, current data indicate potential for Oneida Lake to support a self-sustaining population of lake sturgeon.