Evidence for the presence of biogenic magnetic particles in the nocturnal migratory brown planthopper, Nilaparvata lugens.
Evidence for the presence of biogenic magnetic particles in the nocturnal migratory brown planthopper, Nilaparvata lugens.
复制标题
夜间迁徙褐飞虱 Nilaparvata lugens 中存在生物磁性颗粒的证据。
DOI：
10.1038/srep18771
复制
发表时间：
2016-01-05
影响因子：
4.6
通讯作者：
Chen F
中科院分区：
文献类型：
--
作者：
Pan W;Wan G;Xu J;Li X;Liu Y;Qi L;Chen F
在一些迁徙昆虫中发现了生物磁性颗粒，这暗示了定位和导航的磁感应机制的基础。本文采用SQUID磁测法对褐飞虱(BPH)褐飞虱体内的生物磁性颗粒进行了定性测量，并通过普鲁士蓝染色、电子显微镜和能谱分析进一步确定了它们的特性。结果表明，3~5龄若虫腹部有明显的磁性物质，头、胸无明显磁性物质，长翅型和短翅型雌雄成虫均有明显的磁性物质。磁性颗粒的大小显示在50-450 nm之间，所有被测试的BPHS的形状因子估计在0.81.0之间。此外，磁性颗粒的数量与发育阶段(3-5龄)、翅型(长翅目与短翅目)和性别有关。长翅型雌成虫的磁性颗粒数量最多。尽管BPH腹部磁性颗粒的存在为磁定向的假设提供了可靠的基础，但还需要进一步的行为学研究和补充的物理特性实验来确定BPH的定向行为是否与本研究中检测到的磁性颗粒有关。
Biogenic magnetic particles have been detected in some migratory insects, which implies the basis of magnetoreception mechanism for orientation and navigation. Here, the biogenic magnetic particles in the migratory brown planthopper (BPH), Nilaparvata lugens were qualitatively measured by SQUID magnetometry, and their characteristics were further determined by Prussian Blue staining, electron microscopy and energy dispersive x-ray spectroscopy. The results indicate that there were remarkable magnetic materials in the abdomens and not in the head or thorax of the 3rd–5th instar nymphs, and in macropterous and brachypterous female and male adults of BPH. The size of magnetic particles was shown to be between 50–450 nm with a shape factor estimate of between 0.8–1.0 for all the tested BPHs. Moreover, the amount of magnetic particles was associated with the developmental stage (the 3rd–5th instar), wing form (macropterous vs. brachypterous) and sex. The macropterous female adults had the largest amount of magnetic particles. Although the existence of magnetic particles in the abdomens of BPH provides sound basis for the assumption of magnetic orientation, further behavioral studies and complementary physical characterization experiments should be conducted to determine whether the orientation behavior of BPH is associated with the magnetic particles detected in this study.