Fleischer S J, Harding C L, Blom P E, White J, Grehan J
Department of Entomology, Penn State University, University Park, PA 16802, USA.
J Econ Entomol. 2005 Feb;98(1):66-71. doi: 10.1603/0022-0493-98.1.66.
We confirmed that commercial three- or four-component Spodoptera frugiperda (J.E. Smith) pheromone lures had a high nontarget capture rate for Leucania phragmatidicola Guenée, which compromised monitoring efforts in the northeastern United States. We compiled taxonomic features to distinguish L. phragmatidicola from S. frugiperda, and we compared five new lures. S. frugiperda catch specificity was improved by removing (Z)-11-hexadecen-1-ol acetate (Z11-16:Ac), which attracted L. phragmatidicola. Four lures tracked late-season S. frugiperda immigration, but two of these lures also tracked a bivoltine L. phragmatidicola flight with a second generation coincident with S. frugiperda immigration, and one lure attracted the first, but not the second, generation of L. phragmatidicola. In both low- and high-moth flight conditions, two-component lures had low L. phragmatidicola captures (0.5-1.4%), and although lures with more pheromonal components captured more S. frugiperda, they also had a high percentage of capture of L. phragmatidicola (38-48%). We conclude that although two-component lures captured fewer S. frugiperda, their similar temporal pattern, along with the lower level of L. phragmatidicola, makes them useful for development for monitoring programs in the northeastern United States.
我们证实，市售的三组分或四组分草地贪夜蛾（J.E. 史密斯）性诱剂对白脉粘虫（Guenée）具有较高的非靶标捕获率，这影响了美国东北部的监测工作。我们整理了分类学特征以区分白脉粘虫和草地贪夜蛾，并比较了五种新型诱剂。通过去除吸引白脉粘虫的（Z）-11-十六碳烯-1-醇乙酸酯（Z11-16:Ac），提高了草地贪夜蛾的捕获特异性。四种诱剂追踪了草地贪夜蛾的季末迁飞，但其中两种诱剂也追踪到了白脉粘虫的双季飞行，其第二代与草地贪夜蛾迁飞同时发生，还有一种诱剂吸引了第一代但未吸引第二代白脉粘虫。在低蛾量和高蛾量飞行条件下，双组分诱剂对白脉粘虫的捕获量较低（0.5 - 1.4%），尽管具有更多信息素成分的诱剂捕获了更多草地贪夜蛾，但它们对白脉粘虫的捕获百分比也很高（38 - 48%）。我们得出结论，虽然双组分诱剂捕获的草地贪夜蛾较少，但其相似的时间模式以及较低的白脉粘虫捕获水平，使其对美国东北部监测项目的开发很有用。
