桃小食心虫蛾的趋光性

桃小食心虫Carposlna niponensis Walsingham属鳞翅目蛀果蛾科的一种夜间活动的小蛾。文献记载该蛾虽然为夜间活动，但无趋光性。我们在室内用五种单色光(350、375、405、383、333毫微米)对枕小食心虫进行测定。结果表明该蛾不仅对上述的单色光有反应，而且对350毫微米单色光的反应比较明显。室外的实验选择在不施农药又少人为干扰的枣林，设置4个诱虫光源(20瓦黑绿灯、20瓦黑蓝灯、20瓦黑橙灯和20瓦黑光灯管)，每个光源彼此间隔50米。经两年田间诱虫试验结果表明，上述4种光源都能诱到该蛾，其中以20瓦黑绿双光灯管诱蛾量为多，经显著性测定，黑绿灯诱蛾量极显著。此外，光源与诱芯或光源加诱芯的联合诱蛾实验，同样表明黑绿灯最有效。经室内外的实验结果证明桃小食心虫蛾有趋光性。

A STUDY ON THE PHOTOTAXIS OF THE PEACH FRUIT MOTH

he peach fruit moth Carposina niponensis Walsingham , is a small moth of Carposinidae in Lepidoptera. According to literature this moth is active at night buthas no phototatic reaction toward light. Five different wavelengths of monochromaticlight (350, 375, 405, 333, 383nm) were used to test its reaction in behavior testapparatus in the laboratory. The result indicated that these five wavelengths of monochromatic light could attract moth, especially the 350nm was more effective. Fieldexperiments were conducted in the jujube forests Four light traps were placed 50mapart. A 20W black green double light (= 353, 530nm), a 20W black bluelight ( =355, 435-460), a 20W black orange light ( = 355, 560. 600nm) togatherwith the usual 20W blacklight used to make comparison. The results of two yearsof field experiments indicated that the black green light was most effective in mothtrapping. Besides, comparative experiments in moths trapping between light resourceand pheromone lure indicated the black green light being most effective.