蚜虫化学生态学研究进展及展望

昆虫化学生态学主要以化学手段研究昆虫种内、种间以及与其它生物之间的化学信息联系，昆虫对化学因素的适应等，是昆虫的神经生理和感觉生理、生物化学及生态学的交叉学科，也是当前国际昆虫学界最活跃的研究领域之一。蚜虫属于同翅目（Ｈｏｍｏｐｔｅｒａ）蚜总科（Ａｐ...

Progress and Prospect of Aphid Chemical Ecology.

Since the late of 1980s, the bioassay, including the use of olfactometer, proved that aphids orientate to plants by the means of the volatiles of host plants, and natural enemies orientate to aphids by the searching kairomone. The activity of semiochemicals among plant, aphid and natural enemy was detected by Electroantennograph (EAG), Single cell recording techniques (SCR) and SCR coupled to Gas chromatography (GC-SCR). The composition and spatial structure of semiochemicals were identified by combined GC-Mass spectrometry and infrared spectrum (GC-MS-IS). The sex pheromones of the most of aphids were the synergistic mixture of 2 or 3 kinds of nepetalactols. The main components of alarm pheromones were (E)-(-farnesene (EBF). Electrical penetration graph (EPG) exhibited eight types of waveforms which represent different physiological activities, including aphid stylets(probing, sucking, secreting accompanied by the excreting of honeydew, and revealed the spectrum difference between resistant and susceptible tea varieties to aphids. Results also showed that the contents of nutritional components (such as amino acides) and resistance-determining components in plant were related to aphid population density.