捕食性天敌昆虫

4Bt玉米同对照相比，对捕食性天敌昆虫类群组成、各类群优势度、捕食性昆虫的总量及总量的动态变化方面没有显著的影响；

The total numbers and the dynamics of predator population , the species composition and abundance of species in Bt corn field were not significantly different comparing with the control .

作为捕食性天敌昆虫，它们在生物防治工作中具有重要的作用。

As predators , they are generally beneficial for biocontrol projects .

稻田害虫捕食性天敌昆虫资源

Resources of the predacious insects natural enemies in rice fields

大豆蚜细胞色素氧化酶Ⅱ基因的克隆及其在捕食性天敌昆虫鉴定中的应用

Cloning and sequencing of cytochrome oxidase ⅱ gene of Aphis glycines and its application in detecting natural enemies

致死因子包括寄主抗性、捕食性天敌昆虫、寄生性天敌昆虫、病原微生物、种内竞争共5类13种。

There were 13 kinds of death causing factors which were summarized as 5 sorts including host resistance , predators , parasitoids , pathogenic microorganisms , and specific rivalry .

结果表明，植物群落物种丰富度指数与植食性昆虫丰富度指数呈负相关，而与捕食性天敌昆虫丰富度指数呈正相关，与寄生性天敌的丰富度指数呈负相关；

The results showed that the index of species richness of forest plant community was negatively correlated with community of defoliator and parasitic insects , positively correlated with predatory insect community .

结果表明：咀嚼害虫、刺吸害虫、捕食性天敌以及中性昆虫是昆虫群落的优势功能团；

The result indicates that the chewing pest , piercing-sucking pest , predatory natural enemy and neutral insect are the dominance guilds in the insect community .

捕食性和寄生性天敌昆虫，是马尾松毛虫种群密度较低时虫口的主要控制因子；

The parasitic and the predacious insects are the natural enemies that chiefly control the population number when the population density of the pine caterpillar is low .