镉胁迫显著影响甜菜夜蛾成虫的飞行能力  

Cadmium stress significantly affects the flight performance of Spodoptera exigua( Lepidoptera: Noctuidae) adults

作　　者：邹金城[1] 孙宇 杨勇[1] 杨益众[1] 张子昕 王思雨 苏宏华[1] ZOU Jin-Cheng SUN Yu YANG Yong YANG Yi-Zhong ZHANG Zi-Xin WANG Si-Yu SU Hong- Hua(School of Horticulture and Plant Protection, Yangzhou University, Yangzhou, Jiangsu 225009, Chin)

机构地区：[1]扬州大学园艺与植物保护学院,江苏扬州225009

出　　处：《昆虫学报》2017年第9期1021-1030,共10页Acta Entomologica Sinica

基　　金：江苏省重点研发计划(现代农业)子项目蔬菜病虫害农药减量增效防控技术研究(BE2017379-3);转基因重大专项抗虫玉米节肢动物的种群监控技术(2016ZX08012004-010);上海市科技兴农重点攻关项目(沪农科攻字-2014-7-3-2号)

摘　　要：【目的】重金属污染是目前全球面临的重要环境问题。本研究旨在评价镉污染对迁飞性昆虫甜菜夜蛾Spodoptera exigua飞行能力的影响。【方法】利用昆虫飞行信息采集系统对不同浓度镉胁迫下(0,0.20,0.80,3.20和12.80 mg/kg)不同日龄(1,3,5和7日龄)和不同性别甜菜夜蛾成虫飞行能力进行了研究。【结果】不同浓度镉胁迫对不同日龄和不同性别甜菜夜蛾成虫飞行能力的影响存在显著差异。以0.20 mg/kg处理下3日龄雌成虫飞行能力最强,平均飞行距离最远,为36.96 km。在所测日龄中,0.20 mg/kg的低浓度镉处理与对照相比飞行能力差异不显著;随着镉浓度的升高,雌雄成虫飞行能力均显著下降;重金属镉胁迫对雄虫飞行能力的抑制作用比对雌虫更加明显。【结论】镉胁迫对不同日龄和不同性别甜菜夜蛾成虫飞行能力具有显著影响。[ Aim ] Heavy metal pollution has become one of important environmental issues globally. This study aims to evaluate the effects of cadmium exposure on the flight performance of the beet armyworm, Spodoptera exigua, a migratory insect. [ Methods] Insect flight information system was used to study the flight performance of female and male adults of S. exigua at different ages （ 1, 3, 5 and 7 day-old）, which were fed with the artificial diets containing different concentrations of cadmium （0, 0.20, 0.80, 3.20 and 12. 80 mg/kg）, respectively. [ Results ] There were significant differences in the flight performance of S. exigua adults exposed to different concentrations of cadmium. The 3 day-old female adults stressed by low concentration of cadmium （0.20 mg/kg） were the best fliers with the longest average flight distance （36.96 kin）. The flight performance of S. exigua adults exposed to 0.20 mg/kg cadmium was not significantly different from that of the control. With the increase of cadmium concentration, the flight performance of both male and female adults decreased significantly. The negative effects of heavy metal cadmium stress on the performance of male adults were more obvious than on that of female adults. [ Conclusion ] Different concentrations of cadmium stress have significant effects on the flight performance of S. exigua adults of different ages and different sexes.

关 键 词：甜菜夜蛾 重金属污染 镉 日龄 性别 飞行能力 

分 类 号：Q968[生物学—昆虫学]