Biologische Bekämpfung des Kalifornischen Blütenthrips Frankliniella occidentalis unter besonderer Berücksichtigung des Einsatzes von entomopathogenen Nematoden

加州花蓟马（Frankliniella occidentalis）的生物防治，特别注意昆虫病原线虫的使用

• 批准号: 5372964
• 负责人: Professor Dr. Hans-Michael Poehling
• 金额: --
• 依托单位: Zentrum für Entwicklungsforschung (ZEF)
• 依托单位国家: 德国
• 项目类别: Research Grants
• 财政年份: 2002
• 资助国家: 德国
• 起止时间: 2001-12-31 至 2005-12-31
• 项目状态: 已结题
• 来源: https://gepris.dfg.de/gepris/projekt/5372964?language=en
• 关键词: Biologische; Bek; mpfung; des; Kalifornischen

Western Flower Thrips (WFT), Frankliniella occidentalis (Pergande) (Thysanoptera: Thripidae), is one of the key pests in European greenhouses attacking a wide range of economically important crops such als vegetables and ornamentals. Due to its cryptic feeding behaviour and life strategy control of WFT is difficult. Entomopathogenic nematodes (EPNs) (Rhabditida: Steinernmatidae and Heterorhabditidae) are alredy found to be virulent aginst soil-dwelling development stages of WFT. However, different factors determine quality of EPNs for the control of insect pests. In the present study a broader screening for high virulent strains of EPNs is envisaged and abiotic and biotic constraints for EPN efficacy will be investigated in detail. These include the effect of types of growing media of the host plants, moisture content of the growing media, temperatures, and amount of irrigation water required to wash the nematodes down to the depth of pupation of WFT will be examined. Moreover, the effects of density and depth of pupation of WFT, time and frequency of EPNs application in respect to peak population levels of WFT, and persistence of EPN under semi-field conditions will also be investigated. Furthermore, the possibility of combining EPNs with other biocontrol agents of WFT, i.e. predatory mites (Amblyseius spp.) that feed on foliage-inhabiting WFT life-stages and the predatory mite Hypoaspis aculeifer that prey on soil-dwelling developmental stages of WFT will be investigated.

西方花蓟马（WesternFlower Thrips，WFT），Frankliniellaococcuentalis（Pergande），隶属于缨翅目（Thysanoptera）：蓟马科（Thripidae），是欧洲温室的重要害虫之一，危害蔬菜、蔬菜等重要经济作物。由于其隐蔽的摄食行为和生命策略，WFT的控制是困难的。昆虫病原线虫（Entomopathogenic nematodes，EPN）（小杆纲，Steinermatidae和异小杆科）是近年来发现的一种对土栖性WFT发育阶段具有毒力的线虫。然而，不同的因素决定了用于控制害虫的EPN的质量。在本研究中，更广泛的筛选高毒力菌株的EPN的设想和非生物和生物的限制EPN疗效将进行详细研究。这些包括宿主植物的生长介质类型的影响，生长介质的水分含量，温度，以及将线虫冲洗到WFT化蛹深度所需的灌溉水量将被检查。此外，还将研究WFT的密度和化蛹深度、EPN应用的时间和频率对WFT的峰值种群水平以及EPN在半田间条件下的持久性的影响。此外，EPN与WFT的其他生物防治剂，即捕食螨（Amblyseius spp.）的树叶栖息的WFT生命阶段和捕食螨Hypoaspis aculeifer捕食的土壤栖息的发育阶段的WFT的饲料将进行调查。