植物、植食昆虫、天敌三个营养层次间的关系

The nutrition classes relationship of plant,phytophagous insect and natural enemy

在昆虫与植物的关系中,植物(第一营养层)、植食性昆虫(第二营养层)、天敌(第三营养层)在长期进化过程中,以相互适应为先决条件,形成极其复杂的多样化联系。在这个结构中,植物、植食性昆虫及天敌之间的联系存在一些化学信息物质,这些物质引起昆虫行为和生理的许多反应,从而形成一个多层次的、巨大而复杂的信息网络,并协调三个营养层,即植食性昆虫取食植物、天敌又捕食寄生植食性昆虫或更多营养层之间的关系。

In relationships between plant and insect,including phytophagous insect and plants (first nutrition classes),phytophagous insect and natural enemy (second nutrition classes),plant and natural enemy (third nutrition classes). The diverse and complex relation was formed in the long term of evolvement of plant,phytophagous insect and natural enemy. based on co-adaptation. In this system,there were some kinds of semiochemicals connected plant,phytophagous insect and natural enemy. The much responses of behavior...