【摘要】 用行为实验和光学显微镜观察比较了夜间暗适应处理和日间暗适应处理的亚洲玉米螟蛾Ostriniafurnacalis（Guenee）趋光反应及小眼的显微结构。（1）夜间暗适应处理组的趋光反应率明显高于日间暗适应处理组。5个照度行为实验中，前者最高反应率达80％，最低23％，总反应率近48％，而后者分别只有35％、10％和21％。（2）夜间暗适应与日间暗适应的复眼其屏蔽色素分布大体相同，但小网膜细胞核的分布区域有明显差异，表明亚洲玉米螟娥小眼结构变化存在一定的节律性。这种结构节律变化可能是导致趋光反应昼夜差异的原因之一。更多还原

【Abstract】 Comparative studies of phototactic behaviour and ommatidium fine structure are made with behaviour test and microscopy on adult corn borer, Ostrinia furnacalis (Guenee). The moths were disposed of dark adaptation in the darkroom in different time, in the night or in the day. The results are as follows. (1 ) The percentage of phototactic reaction of the moths which are disposed of dark adaptation in the night is much higher than that dis posed in the daytime. From 5 behaviour tests with different illuminance, the percentage of the highest phototactic response is 80%, the lowest 23 %, and the average 48% for the for mer, and 35 %, 10 %and 21 %respectively for the latter. (2 )The distribution of the screening pigment in the compound eye is nearly the same between the night dark adaptation and the day dark adaptation; however, the distribution area of nuclei of retinula cells is obviously dif ferent, which implies the natural rhythm of structure changes in the ommatidia of adult corn borer. The relationship between the rhythmic changes of the structure of compound eye and phototactic responses is discussed.更多还原