磁场对棉铃虫生长发育及繁殖的影响  

Effects of magnetic field on the development and reproduction of cotton bollworm Helicoverpa armigera Hubner (Lepidoptera: Noctuidae)

作　　者：董兆克[1] 戈峰[1] 

机构地区：[1]中国科学院动物研究所农业虫害鼠害综合治理研究国家重点实验室,北京100101

出　　处：《生态学杂志》2013年第5期1265-1268,共4页Chinese Journal of Ecology

基　　金：国家科技支撑计划项目(2012BAD19B05);国家自然科学基金重点项目(31030012)资助

摘　　要：棉铃虫是华北地区重要的农业害虫,磁场可能对该害虫的生长发育存在显著影响。本试验设置不同磁场强度(零磁场、高磁场和自然磁场),观察棉铃虫幼虫生长发育以及成虫繁殖情况。结果表明:零磁场能明显延长幼虫历期,平均延迟0.4～1.7d;高磁场对幼虫历期没有明显影响;幼虫存活率、蛹重、羽化率、成虫产卵量及卵孵化率等指标受磁场影响并不显著;表明零磁场延缓幼虫发育,但对其繁殖没有明显影响;由于试验中高磁场强度仅有4Gs,是否更高磁场有影响还需进一步验证。Cotton bollworm （ Helicoverpa armigera Hubner） is one of the most serious agricultural pests in Northern China, while magnetic field may have significant effects on the growth and de- velopment of H. armigera. In this paper, three intensities of magnetic field （ zero magnetic field, high magnetic field, and natural magnetic field） were installed to observe the development and reproduction of H. armigera. Zero magnetic field increased the duration of larvae markedly, with a range of 0.4-1.7 d, while high magnetic field had minor effects. The larval survival rate, pu- pal weight, eclosion rate, egg laying amount, and egg hatching rate were less affected by magnet- ic field. It was suggested that zero magnetic field could delay the development of H. armigera larvae, but have minor effects on the reproduction of the pest. Since the intensity of high magnet- ic field in this study was only 4 Gs, whether the more high intensity magnetic field could affect H. armigera needs to be further studied.

关 键 词：零磁场 高磁场 历期 存活 幼虫 蛹 

分 类 号：S435.622.3[农业科学—农业昆虫与害虫防治]