迁飞性害虫褐飞虱对地磁强度变化的种群适合度响应

doi:10.16380/j.kcxb.2018.08.009

摘要/Abstract

摘要： 【目的】地球生物时刻处于地磁场(geomagnetic field, GMF)环境影响下，迁飞昆虫也不例外。迁飞昆虫多可进行跨纬度长距离迁飞，其迁出与迁入地间必然存在地磁强度差异，进而影响迁飞昆虫的种群适合度。本研究旨在明确迁飞性昆虫的磁生物学效应及其地磁环境适应性，服务于迁飞害虫发生的预测预报。【方法】利用直流电型亥姆霍兹线圈模拟迁飞害虫褐飞虱Nilaparvata lugens春季迁出地(广州： GMF 45 μT)与迁入地(南京： GMF 50 μT)地磁场环境，调查了迁出地和迁入地地磁场强度变化对其生长发育与繁殖的影响。【结果】结果显示，与迁出地GMF 45 μT下相比，迁入地GMF 50 μT下褐飞虱卵历期略有缩短(0.50%)，卵孵化率显著提高(6.11%)，雌、雄若虫历期分别延长5.26%和2.37%，初羽化雌、雄成虫体重分别提高0.66%和9.56%，雌、雄成虫寿命分别缩短了35.34%和26.16%，雌成虫产卵量显著提高(30.13%)，卵黄原蛋白基因Vg相对表达量显著提高(259.25%)；此外，迁入地GMF 50 μT还显著缩短了褐飞虱F₁代卵历期(2.52%)，并显著提高了F₁代卵的孵化率(10.83%)。【结论】结果说明，每年春季北迁过程中褐飞虱所处的地磁场强度增加有利于其种群适合度提高，进而对其迁飞种群发生有利，并加重其暴发危害风险。

关键词: 褐飞虱, 地磁场强度, 迁飞昆虫, 迁出, 迁入, 磁生物学效应

Abstract: 【Aim】 Organisms (including migratory insects) on the earth are constantly affected by the geomagnetic field (GMF). The migratory insects can have a long distance migration, and there is a perceptible difference in the GMF intensity between the emigration and immigration regions, which affects the population fitness of migratory insects. This study was carried out to clarify the magnetobiological effect on migratory insect populations so to help predict the occurrence of migratory insect pests. 【Methods】 The GMF intensities of the spring emigration (Guangzhou city, GMF 45 μT) and immigration (Nanjing city, GMF 50 μT) regions of the brown planthopper, Nilaparvata lugens, a migratory pest, were simulated by the DC-type helmholtz coils, respectively, and the changes in the growth, development and reproduction of N. lugens in response to the GMF intensity change between the emigration and immigration regions were investigated. 【Results】 The results showed that in the immigration region (GMF 50 μT), the egg duration of N. lugens was slightly shortened (0.50%), the egg hatching rate was significantly enhanced (6.11%), the developmental duration of female and male nymphs was lengthened by 5.26% and 2.37%, respectively, the body weight of the newly emerged female and male adults was increased by 0.66% and 9.56%, respectively, and the developmental duration of female and male adults was shortened by 35.34% and 26.15%, respectively, as compared with those in the emigration region (GMF 45 μT). Moreover, the fecundity of female adults was significantly enhanced (30.13%) and the relative transcription level of Vg was significantly enhanced (259.25%). Furthermore, compared with the GMF intensity 45 μT, the GMF intensity 50 μT significantly decreased the egg duration (2.52%) and significantly increased the egg hatching rate (10.83%) of the F₁generation of N. lugens. 【Conclusion】 The results suggest that the GMF intensity of the region where N. lugens is located after northward migration in spring is positive for its migration to enhance the population fitness, further advantageous for the population occurrence and increasing the risk of population outbreak and damage in the immigration regions in spring.

Key words: Nilaparvata lugens; geomagnetic field intensity, migratory insect, emigration, immigration, magnetobiological effect

刘瑞莹, 肖子衿, 贺静澜, 万贵钧, 潘卫东, 陈法军. 迁飞性害虫褐飞虱对地磁强度变化的种群适合度响应[J]. , 2018, 61(8): 957-967.

LIU Rui-Ying, XIAO Zi-Jin, HE Jing-Lan, WAN Gui-Jun, PAN Wei-Dong, CHEN Fa-Jun. Population fitness of the migratory brown planthopper, Nilaparvata lugens (Hemiptera: Delphacidae) in response to the change of geomagnetic field intensity[J]. , 2018, 61(8): 957-967.

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链接本文: http://www.insect.org.cn/CN/10.16380/j.kcxb.2018.08.009

http://www.insect.org.cn/CN/Y2018/V61/I8/957

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迁飞性害虫褐飞虱对地磁强度变化的种群适合度响应

Population fitness of the migratory brown planthopper, Nilaparvata lugens (Hemiptera: Delphacidae) in response to the change of geomagnetic field intensity

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