稻飞虱生理发育与迁飞行为的磁响应机制研究

项目名称： 稻飞虱生理发育与迁飞行为的磁响应机制研究

项目编号： No.31470454

项目类型： 面上项目

立项/批准年度： 2015

项目学科： 生物科学

项目作者： 陈法军

作者单位： 南京农业大学

项目金额： 88万元

中文摘要： 地磁场除可避免地球生命受宇宙射线辐射影响外，还对地球生物生存与定向行为有重要作用。长期以来，农业迁飞性害虫远距离迁飞定向研究一直是昆虫行为学和害虫预测预报研究的重点。明确磁场变化对迁飞性害虫生长发育与繁殖及其迁飞行为影响的生物学效应，阐明其生理发育与迁飞行为的磁响应机制，有助于完善昆虫磁发育生物学与迁飞行为学，并为害虫预测预报服务。本研究以水稻重大迁飞性害虫褐飞虱、白背飞虱和灰飞虱为研究对象，开展零磁场、偏转磁场和梯度磁场对稻飞虱生长发育与繁殖的影响及其发育与繁殖调控的分子生物学机理研究；其次，开展磁场变化对稻飞虱迁飞行为的影响及其行为调控的分子生物学机理研究，并开展偏转磁场下稻飞虱迁飞种群地磁定向行为验证以及光诱导的稻飞虱种群迁飞行为节律研究，以明确稻飞虱迁飞行为的磁响应机制。最终，完善稻飞虱磁发育生物学和迁飞行为学研究，并服务于生产中稻飞虱迁飞种群预测预报及其稻田防控。

中文关键词： 稻飞虱；生理发育；迁飞行为；磁响应机理；磁生物学效应

英文摘要： The geomagnetic field can avoid life on earth from the effects of cosmic rays' radiation; simultaneously, it also has an important role on the survival, growth and development of livings and their orientation behavior. In general, orientation behavior of agricultural migratory pests during the long-distance migration is one of the research focuses of insect behavior and pest forecast. And the magnetic developmental biology and migratory behavior of insect pests can be further studied and improved through to study the effects of magnetic fields (MFs) on the growth, development, reproduction and migratory behavior, and to clarify the mechanisms of magnetic response in physiologic development and migratory behavior of migratory insects, which is in turn to service for the prediction and forecast of the occurrences of agricultural migratory pests. In this study, the key insect pests of rice planthoppers, brown planthopper (BPH) Nilaparvata lugens, white backed planthopper (WBPH) Sogatella furcifera and small brown planthopper (SBPH) Laodelphgax striatellus, which are typically night migratory insect pests, are used and three types of magnetic fields are controlled, that is, near-zero magnetic field (NZMF), deflecting magnetic fields (DMF) and gradient magnetic fields (GMF) with the earth magnetic field (EMF) as the control treatment. The objectives of this study are following as: Firstly, the effects of magnetic fields on growth, development and reproduction of N. lugens, S. furcifera and L. striatellus, and the molecular biological mechanisms regulated development physiology and reproduction are studied to improve and perfect the developmental biology of rice planthopper affected by magnetic fields. Secondly, the impacts of magnetic fields on the migratory behavior (including migrating ability, geomagnetic orientation and photoinduced migration rhythms etc.) and the molecular biological mechanisms regulated migration behavior are also researched to make clear the mechanisms of magnetic response in migration behavior of rice planthopper; and the geomagnetic orientation of rice planthopper is tested under DMF in contrast to EMF, and the photoinduced migration rhythms of rice planthopper are also studied using flight mills under MFs and hourly automatic light trap in field netting. Finally, it is clear that this project carrying out can improve and perfect the developmental biology and migration behavior of rice planthopper, and service for the prediction and forecast of the occurrences of N. lugens, S. furcifera and L. striatellus.

英文关键词： Rice Planthopper;Physiological Development;Migratory Behavior;Mechanisms of Magnetic Response;Magnetic Bio-effects