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在稻田生态系统中,蜘蛛是较为重要的捕食性天敌类群,对控制水稻害虫具有重要的作用。在国外,血清学方法已被应用于研究天敌与害虫的捕食关系(Boreham等,1978;Dempsterl960)。Kin等(1975)以血清学方法检验了几种取食松针(?)蚊Thecodiplosis japonensis幼虫的捕食性蜘蛛种类。Rothschild(1970,1971)用血清学方法研究三化螟Scirpophaga incertulas和稻斑腹蛛缘蝽Leptocorisa oratorius与其捕食天敌的关系。为了探明在水稻害虫综合防治中天敌对害虫的控制作用,我们从1981年开始也参考Dempster的血清学方法,研究蜘蛛与几种水稻害虫的捕食与被捕食关系。现将结果报导如下。
Spider is a more important predatory natural enemy in paddy ecosystem, and plays an important role in controlling rice pests. Abroad, serological methods have been used to study the predation of predators and pests (Boreham et al., 1978; Dempster 1996). Kin et al. (1975) tested the predatory spider species of several species of thecodiplosis japonensis larvae fed on pine needles by serological methods. Rothschild (1970, 1971) studied the relationship between Scirpophaga incertulas and Leptocorisa oratorius and their predators by serological methods. To test the control effect of natural enemies on pests in the integrated pest management, we also used Dempster’s serological method from 1981 to study the relationship between the predation and prey of spiders and several rice pests. The results are reported below.