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Damages by excretion of Apopestes spectrum (Esper) imagos on the Dunhuang murals and their control
Author(s): 
Pages: 74-81
Year: Issue:  1
Journal: ACTA ENTOMOLOGICA SINICA

Keyword:  仿爱夜蛾排泄物壁画损害治理敦煌石窟;
Abstract: 通过模拟实验与现场调查相结合的方法研究了仿爱夜蛾Apopestes spectrum(Esper)成虫对敦煌石窟壁画的损害及其治理.结果表明:仿爱夜蛾成虫在石窟中的时空分布具有一定的规律性,成虫密度在上、中、下3层洞窟呈依次增加的趋势,与洞窟内温、湿度有关;在1年内表现为8月份洞窟内成虫数量多,与洞外成虫羽化的高峰期相一致.成虫排泄物污染壁画面积年平均达150 mm2/蛾,且对不同颜料的影响有差异,对白色和蓝色影响较大,对红色和褐色的影响较小.排泄物不仅直接污染壁画表面,而且,其残余物中含有磷酸盐和碳酸盐等,酸性物质在与壁画颜料、地仗及空气的作用过程中均对壁画产生腐蚀.在开展物理防治的基础上,选用15%灭幼脲三号胶悬剂或2.5%敌杀死乳油,于6月上旬防治2~3龄幼虫,灭幼脲喷药后第10天和敌杀死喷药后72 h的防治效果可分别达到85.6%和97.6%.
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