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首页> 外文期刊>Israel Journal of Plant Sciences >Host plant tomentosity affects arthropod pest and parasitoid efficacy
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Host plant tomentosity affects arthropod pest and parasitoid efficacy

机译：寄主植物的柔韧性影响节肢动物害虫和类寄生虫的功效

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摘要

Bemisia tabaci (Gennadius) is an important pest of many crops, and management practices vary from exclusively chemical to physical and biological. This study was conducted to determine the effective release rate of the parasitoid Eretmocerus mundus Mercet on B. tabaci infesting fresh market basil (Ocimum basilicum L.) and sage (Salvia officinalis L.) grown in walk-in tunnels. Sticky traps showed naturally occurring high whitefly densities in sage but not in basil. Eretmocerus mundus pupae were obtained from a commercial insectary and released at total rates of 10, 20, and 30/m(2) in sage and basil tunnels. In sage, no E. mundus parasitized nymphs were found; in contrast, E. mundus parasitization rate was about 6-33% in basil. There was a natural invasion of Encarsia lutea Masi, and parasitism in sage ranged from about 2-7% and 17-86% on basil. These unexpected field results led to laboratory trials on detached leaves and potted plants and confirmed the findings of tunnel-grown sage-there was no whitefly parasitism on sage by E. mundus. Whiteflies on sage were physically more rotund and did not flatten on leaf surface due to the densely pubescent leaves. The effects of different plant crops on whitefly parasitization are discussed.
机译：烟粉虱（Bemisia tabaci，Gennadius）是许多农作物的重要害虫，其管理实践从纯粹的化学方法到物理和生物方法都有所不同。进行这项研究来确定寄生在寄生虫中的Eretmocerus mundus Mercet在散布在步道中的新鲜市场罗勒（Ocimum basilicum L.）和鼠尾草（Salvia officinalis L.）感染的烟粉虱中的有效释放率。粘性陷阱显示鼠尾草中自然产生的高粉虱密度，而罗勒中则没有。 Eretmocerus mundus up是从商业性昆虫那里获得的，并以鼠尾草和罗勒隧道的总释放速率为10、20和30 / m（2）。在鼠尾草中，未发现任何寄生于大肠埃希菌的若虫。相比之下，罗勒中沙眼肠球菌的寄生率约为6-33％。有一种自然入侵的Encarsia lutea Masi，鼠尾草的寄生性在罗勒上大约在2-7％和17-86％之间。这些出乎意料的田间结果导致对离体的叶子和盆栽植物进行了实验室试验，并证实了隧道生长的鼠尾草的发现-鼠疫菌对鼠尾草没有粉虱寄生。鼠尾草上的粉虱在物理上更圆润，并且由于密集的短柔毛叶而在叶表面没有展平。讨论了不同植物作物对粉虱寄生的影响。

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