非社会性植食昆虫的同种相残行为及其机理

同种相残是指动物杀死并取食同种其他个体的行为，一般被认为是种群密度自我调节的一种方式，常常是影响种群动态和群落结构的重要因素，具有重要的生态学和进化生物学意义。本文从以下几个方面综述了非社会性植食昆虫的同种相残行为及其机理的研究进展：影响同种相残行为发生的因素，同种相残的获利与代价，同种相残与亲子识别及护幼行为的关系，同种相残的进化驱动力等。对植食性昆虫同种相残行为的研究不但具有重要的理论意义，同时，如果我们对同种相残行为发生的生态学、生理学和遗传学机理进行深入研究，或许有助于我们利用相关机理实现植食性昆虫田间种群数量的自我调控，这将对害虫的综合治理产生重要的影响。

Cannibalistic behavior in unsocial herbivorous insects and its mechanism

Cannibalism is defined as the fact of killing,followed by consumption of either all or part of conspecifics.Cannibalism has many important evolutionary and ecological implications.Several aspects were reviewed in this paper:factors of cannibalism,benefits and costs from cannibalism,the relationship among cannibalism,kin recognition and maternal care,and evolutionary force of cannibalism.The significance of cannibalism is not only in the theory of ecology and evolutionary biology but also in possible application.Cannibalism may have significant practical importance in pest population suppression if we understand the ecological,physiological and genetic mechanism of cannibalism in depth one day.