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首页> 外文期刊>Journal of entomology >Two Thrips Species in Durum Wheat Cultivations in the Region Western Macedonia, Greece
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Two Thrips Species in Durum Wheat Cultivations in the Region Western Macedonia, Greece

机译：希腊西马其顿地区硬粒小麦栽培中的两个蓟马种类

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摘要

The purpose of this study was to monitor population fluctuations of two thrips species (Limothrips cerealium and Limothrips denticornis), during the growing season of durum wheat, in years 2009 and 2010. Samplings of insects were taken in eight periods to cover the late stages of durum wheat. Measurements were made every about 100 m in the field, with five wheat plants per sample, from 10 different places. Total thrips individuals (per species) on each wheat plant were counted. The species Lema melanopa was also included in measurements (to make comparisons between thrips species more independent). According to the results for all three insects studied, sampling period showed the greatest differences. Z. denticornis and Z. melanopa, showed a significant interaction between year and sampling periods, indicating different population fluctuations in the two years. Z. cerealium showed a stable population fluctuation across years. Z. denticornis, showed also differences in population across years. Thisunstable behavior may be a result of some specific enemies or competition phenomena between the two thrips species, since maximum values of the two species were recorded in different sampling periods. Maximum number of thrips individuals found on each plant was 7 for Z. denticornis and 9 for Z. cerealium but maximum average values were close to 2 for Z. denticornis (in 6th sampling period) and 2.8-3.3 for Z. cerealium (between 4th and 5th sampling period). The relatively low populations of thrips species found in this study did not resulted in significant and apparent damages in durum wheat cultivation but the economic threshold for Z. denticornis and Z. cerealium has to be decided in combination to other insect pest species.
机译：这项研究的目的是监测硬粒小麦在2009年和2010年生长季期间两种蓟马（Limothrips谷类和Limothrips denticornis）的种群波动。在八个时期内进行了昆虫采样，以覆盖该种群的后期。硬质小麦。在田间每约100 m进行一次测量，每个样品来自10个不同地方的五株小麦。计数了每种小麦植物上的总蓟马个体（每种物种）。测量中还包括了Lema melanopa物种（使蓟马物种之间的比较更加独立）。根据对所有三种昆虫的研究结果，采样时间差异最大。 Z. denticornis和Z. melanopa在年份和采样期之间显示出显着的交互作用，表明这两年的人口波动不同。谷物Z.显示出多年来稳定的人口波动。 Z. denticornis也显示了多年来的种群差异。这种不稳定的行为可能是两种蓟马物种之间某些特定敌人或竞争现象的结果，因为这两种物种的最大值是在不同的采样周期内记录的。在每棵植物上发现的蓟马个体的最大数量为Z. denticornis和Z.谷物，分别为7和9，但最大平均值接近于Z. denticornis（在第6个采样期）和Z-谷物（2.8至3.3）（介于第4个之间）和第5个采样周期）。在这项研究中发现的蓟马种类相对较少，并未在硬粒小麦种植中造成重大和明显的损害，但是必须结合其他害虫种类确定Z. denticornis和Z.谷物的经济门槛。

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