中华通草蛉复眼光感受性

Spectral sensitivity of the compound eye in the lacewing Chrysopa sinica Tjedar

运用视网膜电位（Electroretinogram,ERG）技术,对中华通草蛉Chrysopasinica Tjedar成虫复眼在暗适应过程中对单色光和白光刺激的光感受变化进行了测定。结果表明：（1）在340-605nm光谱范围内该草蛉的光谱反应表现3个峰,其中最高峰位于562nm,次峰在524nm,第3峰在460nm;（2）一定光强度（LogI=4.5-0）范围内,其复眼ERG值随光强度的增强而增大,呈近线性增长式样;（3）暗适应时间影响其复眼的ERG值大小,在暗适应100min时其ERG值达到稳定;（4）中华通草蛉复眼ERG的波形由4个部分组成：开光反应、正相电位、持续负电位和闭光反应。

Spectral responses of the compound eye in the lacewing, Chrysopa sinica during dark adaptation were investigated by using the ERG＇s methods. The results showed that monochromatic light stimuli across the spectrum ranging from 340 nm to 605 nm induced ERG＇s reaction of different amplitudes. There were three peaks in their spectral sensitivity curves. The major one appeared at 562 nm, the second 524 nm and the third 460 nm. In a certain intensity range of monochromatic and white light stimuli, the stronger the luminance, the higher the ERG＇s value of the lacewing. Length of the adapted-time could influence ERG＇s value, which reached balance at 100 min of dark-adapted time. There were four parts in the typical ERG of compound eyes of the lacewing, i. e., a positive on-transient, potential of positive phase, a negative sustained potential and a negative off-transient, respectively; the size and shape of each part could be affected by wavelength, lightintensity and duration of the light stimuli.