Wang Zhongming, Cui Miao, Li Jiangtao, Zhou Huiling, Wang Zhengyan
National Engineering Research Center of Grain Storage and Logistics, Academy of National Food and Strategic Reserves Administration, Beijing 100037, China.
Institute of Grain Storage and Logistics, Beijing 100037, China.
Insects. 2025 Jul 17;16(7):730. doi: 10.3390/insects16070730.
We studied the characteristics of adult flat grain beetles Schönherr in trap counts and their relationship with insect densities using electronic probe traps in experimental bins, which contained approximately 1.1 tons of paddy (Changlixiang) with moisture contents of 10.7% and 14.0% and insect densities of 0.1, 1.0, and 5.0 adults/kg. Inside each bin, we vertically installed three layers of electronic probe traps. We installed five traps at the center and half-radius of each layer of the bin. We undertook measurements of daily trap counts, grain temperature, and intergranular relative humidity at each trap location for up to 10 days, and 1.0 kg of paddy was collected from each trap location. At each of the introduced insect densities, we detected beetles using electronic probe traps. When insect density was 0.1 adults/kg, we could not detect the existence of insects in 1.0 kg samples. It was found that the trap counts were spatially nonuniformly distributed, and there was a weak correlation between different locations. There was a regularity in the temporal distribution of trap counts, which was significantly influenced by the paddy moisture content. Except for the insect density, the moisture content, grain temperature, and intergranular relative humidity at the trap location significantly affected trap counts. The distribution pattern of beetles in paddy bulks was found and aggregated by analyzing trap counts. There was a correlation between trap counts and insect densities in grain bulks, but this correlation varied significantly across different locations.
我们在实验仓中使用电子诱捕器研究了成年扁谷盗 Schönherr 在诱捕计数中的特征及其与昆虫密度的关系。实验仓中装有约 1.1 吨含水量分别为 10.7%和 14.0%、昆虫密度分别为 0.1、1.0 和 5.0 头/千克的“长粒香”稻谷。在每个仓内，我们垂直安装了三层电子诱捕器。在仓的每层中心和半径一半处各安装五个诱捕器。我们在每个诱捕器位置进行了长达 10 天的每日诱捕计数、谷温以及粒间相对湿度的测量，并从每个诱捕器位置收集了 1.0 千克稻谷。在每个引入的昆虫密度下，我们使用电子诱捕器检测甲虫。当昆虫密度为 0.1 头/千克时，在 1.0 千克样本中未检测到昆虫的存在。结果发现，诱捕计数在空间上分布不均匀，不同位置之间的相关性较弱。诱捕计数在时间分布上存在规律，这受到稻谷含水量的显著影响。除昆虫密度外，诱捕器位置的含水量、谷温和粒间相对湿度对诱捕计数有显著影响。通过分析诱捕计数，发现并汇总了稻谷堆中甲虫的分布模式。谷堆中的诱捕计数与昆虫密度之间存在相关性，但这种相关性在不同位置之间差异显著。
