Journal of Integrative Agriculture ›› 2021, Vol. 20 ›› Issue (5): 1336-1345.DOI: 10.1016/S2095-3119(20)63287-7

所属专题: 昆虫合辑Plant Protection—Entomolgy

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  • 出版日期:2021-05-01 发布日期:2021-04-12

Effect of a near-zero magnetic field on development and flight of oriental armyworm (Mythimna separata)

YAN Meng-meng1, ZHANG Lei1, CHENG Yun-xia1, Thomas W. SAPPINGTON2, PAN Wei-dong3, JIANG Xing-fu1
  

  1. 1 State Key Laboratory for Biology of Plant Disease and Insect Pests, Institute of Plant Protection, Chinese Academy of Agricultural Sciences, Beijing 100193, P.R.China
    2 Corn Insects and Crop Genetics Research Unit, USDA-ARS, Ames, IA 50011, USA
    3 Beijing Key Laboratory of Bioelectromagnetics, Institute of Electrical Engineering, Chinese Academy of Sciences, Beijing 100190, P.R.China
  • Online:2021-05-01 Published:2021-04-12
  • Contact: Correspondence JIANG Xing-fu, Tel: +86-10-62816073, E-mail: xfjiang@ippcaas.cn
  • About author:YAN Meng-meng, Mobile: +86-13121300528, E-mail: 912692093@qq.com;
  • Supported by:
    This work was found by the earmarked fund for China Agriculture Research System (CARS-22), the National Key Research and Development Program of China (2017YFD0201802 and 2017YFD0201701), the National Natural Science Foundation of China (31672019, 31870367 and 31871951), and the Beijing Municipal Natural Science Foundation, China (6172030).

摘要:

地球磁场影响着地球上所有的生物。本研究以正常地磁场(约50 μT)为对照条件,在近零磁场(<500 nT)下饲养粘虫,观察近零磁场对粘虫的行为效应。近零磁场由亥姆霍兹线圈系统产生。结果表明:近零磁场显著延长了粘虫幼虫和蛹的发育历期,增加了雄蛾的寿命,减少了蛹重,雌性产卵量和卵黄蛋白原蛋白基因(Vg)的表达水平;而且,近零磁场对粘虫成虫交配率产生负面影响。此外,近零磁场下粘虫在黑夜的自主飞行活动减少,表明近零磁场可能影响粘虫的飞行节律。磁场强度的降低可能对粘虫的生长发育、繁殖和飞行等活动产生负面影响,进而影响粘虫的迁飞活动。


Abstract:

The geomagnetic field affects all living organisms on the Earth.  In this study we investigated the developmental and behavioral effects of rearing Mythimna separata in a near-zero magnetic field (<500 nT) compared to the local geomagnetic field (approximately 50 μT).  The near-zero magnetic field produced by a Helmholtz coil system significantly lengthened larval and pupal development durations, increased male longevity, and reduced pupal weight, female reproduction, and the relative expression level of the vitellogenin (Vg) gene in newly emerged females.  Moreover, the near-zero magnetic field had a considerable negative effect on the mating ratio of M. separata adults.  In addition, the moths in the near-zero magnetic field displayed less flight activity late in the night than those in the Earth’s normal geomagnetic field, indicating that the flight rhythm of M. separata may be affected by the near-zero magnetic field.  Reduction in magnetic field intensity may have negative effects on the development and flight of oriental armyworm, with consequent additional effects on its migration.

Key words: development ,  flight activity ,  geomagnetic field ,  Mythimna separata ,  near-zero magnetic field