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

YAN Meng-meng; ZHANG Lei; CHENG Yun-xia; Thomas W.SAPPINGTON; PAN Wei-dong; JIANG Xing-fu

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

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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 n T)compared to the local geomagnetic field(approximately 50μT).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.

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《农业科学学报（英文版）》 |2021年第5期|1336-1345|共10页
作者
YAN Meng-meng; ZHANG Lei; CHENG Yun-xia; Thomas W.SAPPINGTON; PAN Wei-dong; JIANG Xing-fu;
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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;

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;

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;

Corn Insects and Crop Genetics Research Unit USDA-ARS Ames IA 50011 USA;

Beijing Key Laboratory of Bioelectromagnetics Institute of Electrical Engineering Chinese Academy of Sciences Beijing 100190 P.R.China;

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;

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

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