Bläske V U, Hertel H
Bundesanstalt für Materialforschung und-prüfung (BAM), Laboratory. IV.11, Berlin, Germany.
J Econ Entomol. 2001 Oct;94(5):1200-8. doi: 10.1603/0022-0493-94.5.1200.
The effects of four plant extract formulations on the orientation and survival of subterranean termites were tested. In choice experiments, extract-treated filter paper had a significantly repellent effect on groups of Reticulitermes santonensis De Feytaud, R. virginicus (Banks), Coptotermes formosanus Shiraki, and Schedorhinotermes intermedius Breinli. There was no species-specific difference in avoidance behavior toward the tested concentrations. No-choice experiments revealed toxic properties of all investigated extracts by contact or airborne compounds against R. santonensis. However, high termite mortality was only achieved by forced direct or forced indirect exposure to the plant material, Feeding deterrence or digestive toxicity could not be judged in these experiments. One of the extracts was efficiently used for soil treatments to protect a food substrate against R. santonenis infestation. Extract-treated barriers in the experiments did not affect mortality compared with control trials but prevented termites from penetrating treated soil.
测试了四种植物提取物配方对地下白蚁定向和存活的影响。在选择实验中，经提取物处理的滤纸对桑氏散白蚁（Reticulitermes santonensis De Feytaud）、弗吉尼亚散白蚁（R. virginicus (Banks)）、台湾乳白蚁（Coptotermes formosanus Shiraki）和中间锯白蚁（Schedorhinotermes intermedius Breinli）群体具有显著的驱避作用。对测试浓度的回避行为不存在物种特异性差异。无选择实验表明，所有研究的提取物通过接触或空气传播的化合物对桑氏散白蚁具有毒性。然而，只有通过强制直接或强制间接接触植物材料才能实现较高的白蚁死亡率，在这些实验中无法判断摄食威慑或消化毒性。其中一种提取物有效地用于土壤处理，以保护食物基质免受桑氏散白蚁的侵害。与对照试验相比，实验中经提取物处理的屏障并未影响死亡率，但阻止了白蚁穿透处理过的土壤。
