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为评估叉角厉蝽Eocanthecona furcellate对黄野螟Heortia vitessoides幼虫的控制作用,观察了叉角厉蝽的捕食行为,研究了不同虫态叉角厉蝽对黄野螟3龄及5龄幼虫的捕食功能反应、自身密度效应以及空间异质性对其捕食效能的影响。结果表明:叉角厉蝽对黄野螟幼虫的捕食功能反应符合HollingⅡ型方程,不同虫态叉角厉蝽对黄野螟幼虫攻击率大小顺序为:5龄若虫>雌成虫>3龄若虫,对3龄黄野螟幼虫理论日最大捕食量分别为21.79、15.38及12.85头。当猎物密度固定为50头/盒时,随着叉角厉蝽密度的增加,其捕食量也逐步增加,但对猎物的寻找效应则减弱,个体间存在相互干扰作用。另外,叉角厉蝽的捕食效能也因空间环境不同表现出较大的差异,空间越大,其捕食率越低。研究结果为定量评估叉角厉蝽对黄野螟的控制作用提供了基础数据,也为其田间释放应用技术提供了依据。
In order to evaluate the control effect of Eocanthecona furcellate on larvae of Heortia vitessoides, the predation behavior of Acipenser sinensis was observed, and the predation of 3rd instar and 5th instar larvae Effects of functional response, self-density effect and spatial heterogeneity on their predation performance. The results showed that the predatory functional response of the Acremonium japonicus to the yellow borer larvae accorded with the Holling type II equation. The attack rates of Larvae perforatum larvae on different larvae were as follows: 5th instar nymphs> female adults> 3rd instar nymphs, The maximum daily predation on the 3rd instar larvae of the yellow borer was 21.79, 15.38 and 12.85 respectively. When the density of the prey is fixed at 50 heads / box, the predation amount increases with the increase of the density of the prey, but the hunting effect on the prey is weakened, and the mutual interference exists between the individuals. In addition, the predation efficiency of pronghorn and stink bug also showed great differences due to different spatial environments. The larger the space, the lower the predation rate. The results provided the basic data for the quantitative assessment of the control effect on the yellow wild rice borer, and also provided the basis for its field application technology.