【摘要】 <正> 大量事实证明,斑啄木鸟[Dendrocopos major cabanisi(Malherbe)]是控制光肩星天牛[Anoplophora glabripennis(Motsch.)]的有效天敌。而为什么在斑啄木鸟巢区内的光肩星天牛种群能长期存在呢?为了认识这种特定的取食关系,在秦皇岛海滨林场进行了多年的观察。一、斑啄木鸟的生物学更多还原

【Abstract】 This paper describes the relationship of absorbing nourishment between woodpecker and longicorn. Woodpecker pecks the elder larvas and chrysalises of longicorn in winter and spring, and longicorn develops and breeds in summer and autumn to maintain the lasting of its population. Such a fixed relationship of absorbing nourishment is a phenomenon of coevolution.更多还原