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Feeding Behaviors of Wood Destroying Insect Using AE Monitoring

利用 AE 监测毁木昆虫的摄食行为

基本信息

批准号：
04660188
负责人：
IMAMURA Yuji
金额：
$ 1.28万
依托单位：
KYOTO UNIVERSITY
依托单位国家：
日本
项目类别：
Grant-in-Aid for General Scientific Research (C)
财政年份：
1992
资助国家：
日本
起止时间：
1992 至 1993
项目状态：
已结题

项目摘要

It was revealed from this study that acoustic emissions (AEs) were detected from the wood specimens under feeding attack by sugi bark borers or powder-post beetles as well as termites. The close-up observations of the oral movement using CCD micro-camera have clarified that the AEs were evidently relevant with the activities of feeding behaviors of the insects. The monitoring of AEs from the wood specimens gave much interesting information for the investigation of the behaviors of wood destroying insects.Results obtained from the study on subterranean termites were as follows ; (1) The rate of AE events increased proportionally to the number of the inhabiting workers. (2) The AE events began to generate about a few hours after setting the small size specimens and increased suddenly, however, after then they decreased to a constant generating rate about a few days after starting of tests. (3) Even with the same number of inhabiting workers, AEs were generated at higher rate from the specimen with soldiers than without soldiers. (4) AE events decreased as the ambient temperature fell or rose from the standard degree of 27ﾟC.(5) The generation of AE have changed according to the effect of lighting suggesting the activities of feeding were influenced by irradiation of light.The AE monitoring method should promise to provide a suggestive data for the investigation of behaviors of wood-feeding insects in order to develop their control system which is compatible with environment.

结果表明，在杉树树皮蛀虫、粉柱甲虫和白蚁的取食攻击下，木材样品中检测到声发射（ae）。利用CCD微相机对口腔运动进行了近距离观察，证实了ae与昆虫的摄食行为有明显的相关性。木材样品的ae监测为研究木材破坏昆虫的行为提供了许多有意义的信息。对地下白蚁的研究结果如下：(1)声发射事件发生率与居住工人人数成正比增加。(2)声发射事件在小尺寸试件成型后数小时左右开始产生，然后突然增加，但在试验开始后数天左右，声发射事件的产生率降至恒定。(3)在工蚁数量相同的情况下，有工蚁的样本产生的ae的速率高于无工蚁的样本。(4)声发射事件随环境温度的升高或降低而减小。(5)声发射的产生随光照的影响而变化，表明取食活动受到光照的影响。声发射监测方法应致力于为研究食木昆虫的行为提供有启发性的数据，以便开发与环境相适应的食木昆虫防治系统。