在鸟克兰森林草原地区的柞树上常常可以看到不同种类的柞蚜。它们以树木的汁液为营养,但是仅利用取得的植物碳水化合物的10％作为自己的营营物质,其余的90％以泌露状态分泌掉。这些甜的液体被蜜蜂、蚂蚁和其它有益昆虫所采集。当蚜虫分泌的时候,蚂蚁舔食蜜 Often different species of oak aphids can be found on oak trees in the birdcree forest grasslands. They use tree juice for their nutrition, but use only 10% of their plant carbohydrates as their own operating substance, and the remaining 90% are secreted in the state of excretion. These sweet liquids are harvested by bees, ants, and other beneficial insects. When aphids are secreted, ants lick honey