Suction air traps vs. crops in monitoring Russian wheat aphid, Diuraphis noxia (Kurdj.) in Central Europe (Hom., Aphididae)

By Petr Starý, Hana Lukášová
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引用次数: 8

Abstract

Summary: The Russian wheat aphid (=RWA), Diuraphis noxia (Kurdj.) is an exotic expansive aphid on the small grains determined in the Czech republic since 1993 (1995). Determination of RWA flight patterns by suction air traps (= SATs) between 1994-1998 indicated some banker, less important, or indicated RWA distribution areas. A comparison of the RWA monitoring by SATs and by crop samples in areas more or less distant from individual SAT locations manifested a high silmilarity of RWA evidence in its overall distribution and area-influenced population numbers. Owing to geographic area-dependent features of its life-cycle (holocycly) and host plant preferences, RWA seems to be most injurious to spring barley. In spite of the role of SATs in aphid forecasting, RWA samples are recommended to be taken also from the crops at the early ripening stage as the respective SAT evidence reflects only the emigration of the alate aphids originating from the decreasing populations. In general, RWA detection by SATs was either simultaneously or successively found to reflect the RWA presence in the more or less distant crops. The 30km perimeter of a SAT is agreed to be representative for mon-toring RWA populations in a sampled area.

在监测俄罗斯小麦蚜,Diuraphis noxia(Kurdj.)在中欧(Hom.Aphididae)中的抽吸空气捕捉器与作物
摘要:俄罗斯小麦蚜Diuraphis noxia(Kurdj.)是自1993年(1995年)以来在捷克共和国发现的一种小颗粒上的外来膨胀蚜。1994-1998年间,通过吸入空气捕集器(=SAT)确定的RWA飞行模式表明了一些银行家、不太重要的或表明的RWA分布区域。SAT和作物样本对RWA监测的比较表明,RWA证据在其总体分布和受地区影响的人口数量方面具有高度的相似性。由于其生命周期(全周期)的地理区域依赖性特征和寄主植物的偏好,RWA似乎对春大麦的伤害最大。尽管SAT在蚜虫预测中发挥着作用,但建议也从早熟阶段的作物中采集RWA样本,因为相应的SAT证据只反映了种群减少引起的有翼蚜的迁移。通常,SAT的RWA检测是同时或连续发现的,以反映或多或少远处作物中RWA的存在。SAT的30km周长被认为是采样区域内监测RWA种群的代表。
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