首页> 美国卫生研究院文献>Journal of Nematology >Control of the Oriental Fruit Moth Grapholita molesta Using Entomopathogenic Nematodes in Laboratory and Fruit Bin Assays
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Control of the Oriental Fruit Moth Grapholita molesta Using Entomopathogenic Nematodes in Laboratory and Fruit Bin Assays

机译:使用实验室内的昆虫病原线虫和水果箱分析法控制东方果蛾(Grapholita molesta)

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摘要

The oriental fruit moth (OFM), Grapholita molesta (Busck), which is among the most important insect pests of peaches and nectarines, has developed resistance to a wide range of insecticides. We investigated the ability of the entomopathogenic nematodes (EPN) Steinernema carpocapsae (Weiser), S. feltiae (Filipjev), S. riobrave (Cabanillas et al.), and Heterorhabditis marelatus (Liu and Berry) to control OFM under laboratory and fruit bin conditions. At a dosage of 10 infective juveniles (IJ)/cm2 in the laboratory, S. carpocapsae caused 63%, S. feltiae 87.8%, S. riobrave 75.6%, and H. marelatus 67.1% OFM mortality. All four nematode species caused significant OFM larval mortality in comparison to the nontreated controls. Steinernema feltiae was used for the bin assays due to the higher OFM mortality it caused than the other tested EPN species and to its ability to find OFM under cryptic environments. Diapausing cocooned OFM larvae in miniature fruit bins were susceptible to IJ of S. feltiae in infested corner supports and cardboard strips. Treatment of bins with suspensions of 10 or 25 S. feltiae IJ/ml water with wetting agent (Silwet L77) resulted in 33.3 to 59% and 77.7 to 81.6% OFM mortality in corner supports and cardboard strips, respectively. This paper presents new information on the use of EPN, specifically S. feltiae, as nonchemical means of OFM control.
机译:东方果蛾(OFM),桃蚜和油桃是最重要的害虫之一,其对多种杀虫剂具有抗性。我们调查了昆虫病原线虫(EPN)剑叶线虫(Weiser),链霉菌(Filipjev),里氏链球菌(Cabanillas等人)和马拉特氏异种线虫(Liu和Berry)在实验室和果仓中控制OFM的能力。条件。在实验室中按10个感染性幼体(IJ)/ cm 2 的剂量,炭疽链球菌引起63%,毡状链球菌引起87.8%,riobrave链球菌引起75.6%,而马拉氏球菌引起67.1%的OFM死亡。与未处理的对照组相比,所有四种线虫物种均导致明显的OFM幼虫死亡率。由于其比其他测试的EPN物种引起的OFM死亡率更高,并且由于其在隐蔽环境下发现OFM的能力,所以Steinernema feeliae被用于bin分析。在微型果皮箱中滞育的茧状OFM幼虫在出没的角撑和硬纸板条中易受口蹄疫的感染。用润湿剂(Silwet L77)用10或25的链霉菌IJ / ml水悬浮液处理垃圾箱,在角支撑和纸板条上的OFM死亡率分别为33.3%至59%和77.7%至81.6%。本文介绍了有关使用EPN(特别是毡状链球菌)作为OFM控制的非化学方法的新信息。

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