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致死干扰竞争作用(lethal interference competition)是近些年来才被人们认识到的更为复杂的种间竞争关系,是昆虫天敌间竞争的一种极端形式,广泛存在于寄生性天敌昆虫之间。本文从其定义、作用机制、方式及其与害虫生物防治的相互关系几个方面介绍了天敌群落中的这一典型的种间相互关系。根据作用机制的不同,可将致死干扰竞争作用分为外竞争和内竞争;其通常的作用方式包括多寄生(超寄生)、复寄生、杀卵作用、寄主取食、物理攻击和生理抑制等。深入全面地研究这一种间关系对于有效生防作用物的筛选和引入,以及整个生防系统群落的稳定性具有重要意义。
The lethal interference competition is a more complicated interspecific competition that has been recognized in recent years. It is an extreme form of competition between the natural enemies of insects and widely exists between the parasitic natural enemy insects. This paper introduced the typical inter-species relationship in natural enemies community from the aspects of its definition, mechanism of action, mode and its relationship with pest biological control. According to the different mechanism of action, the competition effect of lethal interference can be divided into external competition and internal competition. Its usual mode of action includes multiple parasitism (parasite), parasite, egg killing, host feeding, physical attack and physiological inhibition . A thorough and thorough study of the relationship between these species is of great significance for the screening and introduction of effective biocontrol agents and the stability of the entire biocontrol system community.