Abstract Barriers and pesticides have been used in streams to control sea lamprey in the Laurentian Great Lakes for nearly 70 years. Considerable effort has been spent to develop additional control measures, but much less effort has gone toward identifying how or where additional control measures might be cost-effectively integrated into the sea lamprey control program. We use a management strategy evaluation model in Lake Michigan to identify the stream types that would be most suitable for deploying traps to remove adults prior to spawning and estimate the likely impact on adult sea lamprey abundance in subsequent years under several trapping scenarios relative to status quo abundance. The greatest reduction in lake-wide adult sea lamprey abundance predicted by the model resulted when removing adult sea lampreys from streams that are difficult for control program personnel to treat with lampricide because lampricide applications would be required less frequently. Additionally, targeting streams which experience regular sea lamprey recruitment and streams with low adult sea lamprey density should result in reduced lake-wide abundance if trapping costs are relatively low or removal is high. Our results provide direction on where to trap and why, and indicate that trapping may be a valuable part of an integrated sea lamprey control approach advancing the goals of the Great Lakes Fishery Commission.

中文翻译：

---

捕获地点很重要：对综合海七鳃鳗管理的影响

摘要 近 70 年来，人们一直在溪流中使用屏障和杀虫剂来控制劳伦斯大湖的海七鳃鳗。已经花费了相当大的努力来制定额外的控制措施，但在确定如何或在何处以具有成本效益的方式将额外的控制措施整合到海七鳃鳗控制计划中的努力要少得多。我们使用密歇根湖的管理策略评估模型来确定最适合部署陷阱以在产卵前移除成鱼的溪流类型，并估计在与现状相关的几种诱捕情景下，随后几年对成鱼数量的可能影响丰富。模型预测的全湖成年海七鳃鳗丰度的最大减少是从控制计划人员难以用杀灭灯剂处理的溪流中去除成年海七鳃鳗时导致的，因为使用杀灭灯剂的频率较低。此外，如果诱捕成本相对较低或清除率较高，则针对定期招募海七鳃鳗的溪流和成年海七鳃鳗密度低的溪流应会导致全湖丰度减少。我们的结果为诱捕的地点和原因提供了方向，并表明诱捕可能是推进大湖渔业委员会目标的综合海七鳃鳗控制方法的重要组成部分。如果诱捕成本相对较低或清除率较高，则将经常招募海七鳃鳗的溪流和成年海七鳃鳗密度低的溪流作为目标，应该会导致全湖丰度减少。我们的结果为诱捕的地点和原因提供了方向，并表明诱捕可能是推进大湖渔业委员会目标的综合海七鳃鳗控制方法的重要组成部分。如果诱捕成本相对较低或清除率较高，则将经常招募海七鳃鳗的溪流和成年海七鳃鳗密度低的溪流作为目标，应该会导致全湖丰度减少。我们的结果为诱捕的地点和原因提供了方向，并表明诱捕可能是推进大湖渔业委员会目标的综合海七鳃鳗控制方法的重要组成部分。