蚕豆蚜种群动态与蚕豆生理变化的关系

THE RELATIONSHIP BETWEEN Aphis craccivora POPULATION DYNAMICS AND Vicia faba PHYSIOLOGICAL STRESS

本文以蚕豆和蚕豆蚜构成的人工种间关系系统为对象,研究了蚜虫种群动态和植物生理变化的关系。发现蚕豆生理应激过程能影响蚕豆蚜种群的生殖率、存活率等种群特征,从而调节其种群的动态。蚕豆还能传导放大昆虫种群自主调节的信息。蚜虫种群的适应过程,包括减小种群数量(低生殖率和迁移),降低对植物的胁迫,从而维持种间关系系统的持续发展。本文还初步将植物的生理应激过程与昆虫种群的动态过程相耦联,建立动态模型,对种间关系的发展趋势进行了分析和讨论。

The Experiments were carried out to study the relationship dynamics of Aphis craccivora population and Vicia faba between physiological stress on the basis of plant-insect experimental system. It is found that V. faba's physiological stress can affect A. craccivora population's reproduction rate, survival rate and other population characteristics to regulate aphid population dynamics. Vicia faba can transmit and emplify the aphid's message which regulats the insect population density. The adaptive process of A. craccivora population, including reducing population size (lower reproduction rate and migration) lessens the physiological pressure to plant, so as to mentain the development of plantinsect intersperses system. In this paper, the computer simulation modle is Set up by couping the physiological stress process of plant and population dynamics of insect, and the development trend of interspecies relationship was also disscu-ssed.