粘虫飞行定向行为与不同磁场环境的关系  

Effect of magnetic fields on the orientation behavior of the oriental armyworm Mythimna separata(Walker)

作　　者：王伟弘 张蕾[2] 程云霞[2] 潘卫东[1] 江幸福[2] WANG Wei-Hong;ZHANG Lei;CHENG Yun-Xia;PAN WeiDong;JIANG Xing-Fu(Beijing Key Laboratory of Bioelectromagnetics,Institute of Electrical Engineering,Chinese Academy of Sciences,Baoding 100190,China;State Key Laboratory for Biology of Plant Diseases and Insect Pests,Institute of Plant Protection,Chinese Academy of Agricultural Sciences,Beijing 100193,China;University of Chinese Academy of Sciences,Beijing 100049,China)

机构地区：[1]中国科学院电工研究所,生物电磁学北京市重点实验室,北京100190 [2]中国农业科学院植物保护研究所,植物病虫害生物学国家重点实验室,北京100193 [3]中国科学院大学,北京100049

出　　处：《应用昆虫学报》2018年第5期794-801,共8页Chinese Journal of Applied Entomology

基　　金：国家公益性行业(农业)科研专项(201403031);国家自然科学基金(31672019,31871951,31870367);国家重点研发计划(2017YFD0201701,2017YFD0201802);国家绿肥产业技术体系(CARS-22);北京市自然科学基金(6172030)

摘　　要：【目的】研究正常地磁场和近零磁场条件下饲养的粘虫Mythimna separata(Walker)夜间飞行定向行为与磁场的关系,为明确迁飞性昆虫远距离迁飞的地磁定向机制提供依据。【方法】分别在正常地磁场和近零磁场条件饲养粘虫,羽化后的粘虫蛾在人工模拟不同的磁场条件下进行夜间飞行定向行为测试,比较粘虫蛾飞行定向行为的差异。【结果】粘虫蛾在正常地磁场条件下均具有显著的群体共同定向行为,夏季测试的粘虫群体共同定向方向为偏北;在近零磁场以及垂直平面分量倒转的地磁场条件下,粘虫蛾群体共同定向行为均消失。同时,不同磁场的生长环境对粘虫飞行定向行为的影响不明显,而飞行测试时的磁场环境对其定向行为有显著影响。【结论】磁场可能是粘虫定向的重要参考依据之一,粘虫对地磁场磁倾角的变化有反应,推测其可能利用了磁倾角进行一定程度上的辅助定向。[Objectives] To clarify the effect of magnetic fields on the nocturnal orientation behavior of Mythimna separata(Walker) and investigate the magnetic orientation mechanisms of aerial migratory insects. [Methods] Oriental armyworms were raised in geomagnetic and near-zero magnetic fields, and experiments on the orientation behavior of oriental armyworm moths were carried out in an artificial simulated magnetic field. [Results] M. separata exhibited significant group orientation with respect to geomagnetic field, which in summer was northward. This common group orientation disappeared under near-zero magnetic field conditions and the vertical variable of geomagnetic field reversal. The growth environment under different magnetic fields had little effect on orientation behavior, but the magnetic field environment had a notable influence on flight direction. [Conclusion] The orientation of M. separata is clearly affected by magnetic field and nocturnal aerial migratory insects may use magnetic fields for navigation.

关 键 词：粘虫 近零磁场 垂直平面分量倒转地磁场 飞行定向行为 磁倾角 

分 类 号：S433.4[农业科学—农业昆虫与害虫防治]