摘要
用视网膜电位图 (electroretinogram ,ERG)技术研究了棉铃虫Helicoverpaarmigera蛾暗适应过程中对单色光和白光刺激的光感受性变化。结果显示 :(1)依ERG振幅大小 (峰 峰值 ) ,在 34 0～ 6 0 5nm波谱内有 3个大小不等的峰———主峰位于绿 黄光区 5 6 2nm ,次峰在蓝光区 483nm ,第 3个峰在近紫外区 40 0nm ,显示其至少有 3种感受器 ;(2 )性别、日龄及暗适应时间长短对其光谱敏感性有影响 ,低龄时雄蛾对单色光刺激较雌蛾敏感 ,高日龄时相反 ;1～ 5日龄内 ,3日龄蛾的视网膜电位 (ERP)值最高 ;随暗适应时间延长 ,其复眼对近紫外区 40 0nm敏感性明显增加 ;(3)一定光强度范围内 ,随单色光和白光光强度增强该蛾复眼的ERP值增大 ,初期增加较缓 ,中期较快 ,呈近似S型曲线 ,显示其复眼具有较强的光强度自调节和适应机制。
The photosensitivity and spectral responsiveness of cotton bollworm (CBW) moth, Helicoverpa armigera (Hübner) were determined by an electroretinogram (ERG) recording method. The results indicated: (1) different monochromatic light within U. V. and most of visible light region across the spectrum ranging from 340 nm to 605 nm may induce ERG reactions of CBWs compound-eye with different amplitudes. According to the size of ERG amplitude (peak-peak value), there were three peaks in their spectral sensitivity curves, the major one appeared at 562 nm (Green), the second 483 nm (Blue) and the third 400 nm, suggesting at least three types receptors in the compound eye of CBW moth. (2) Sex, day-age, and dark-adapted time affected its spectral sensitivity. Young male moth was more sensitive than young female, while old moth in opposite; the size of ERG amplitude of 3-day-old moth was highest in 1-5 days old moth; the moth photosensitivity got stronger with dark-adapted time lasting. (3) In a certain intensity range of monochromatic and white light stimuli, the stronger the luminance got, the higher the ERG value of a certain age CBW moth, a near S shape curve appeared. This suggests the compound eye of CBW moth has a strong adapting ability to light.
出处
《昆虫学报》
CAS
CSCD
北大核心
2002年第3期323-328,共6页
Acta Entomologica Sinica
基金
河北省教委博士基金资助
关键词
棉铃虫
复眼
视网膜电位图
光谱敏感性
光刺激
Helicoverpa armigera
compound eye
electroretinogram (ERG)
spectral sensitivity
light stimuli
