舞毒蛾化蛹阶段自然控制作用初步调查  

Investigation of natural control effect during prepupa and pupa development of Lymantria dispar

作　　者：吴海山 王建军[2] 梁立明 王薇 栾庆书[3] 云丽丽[3] 王琴[3] 

机构地区：[1]阜新蒙古族自治县森林病虫害预测预报站,辽宁阜新123108 [2]河北大学生命科学学院,河北保定071002 [3]辽宁省林业科学研究院,辽宁沈阳110032

出　　处：《辽宁林业科技》2012年第1期13-14,62,共3页Liaoning Forestry Science and Technology

基　　金：林业公益性行业科研专项(200904029);辽宁省森林保护重点实验室项目

摘　　要：舞毒蛾是世界范围内的重要森林食叶害虫,取食多种阔叶和针叶树木。为了解舞毒蛾在我国危害较轻的原因,作者在林间设立样方,调查下树将要化蛹的舞毒蛾老熟幼虫的死亡率及致死因素,蛹的死亡率及致死因子。发现病毒是导致老熟幼虫死亡的主要因子,死亡率高达96.6%。蛹的致死因子较多,其中一种皮蠹取食导致的致死率较高,达到58%,舞毒蛾黑瘤姬蜂的致死率也较高。研究表明,舞毒蛾化蛹阶段致死因子及死亡率较高,可能是舞毒蛾发生危害较轻的原因之一。Lymantria dispar（Lepidoptera： Lymantriidae） is a worldwide forest defoliator.It attacks hundreds of tree species including broad-leaved and coniferous trees.However,L.dispar is not a serious forest insect pest in China.In order to explain the reason why L.dispar could not cause serious damage to forest in China,authors investigated the mortality rate and related lethal factors during late-instar larvae and pupae development of gypsy moth.Results showed that virus was the main factor causing late-instar larvae death,and the mortality rate reached to 96.6% during the investigation period.There were several factors causing pupae death.Among these factors,one kind of carpet beetle（Coleopetera： Dermestidae） caused about 58% mortality rate of pupae.Coccygomimus disparis Viereck also had higher parasitism rate.These results indicated that there were many factors caused the death of late-instar larvae and pupae,which kept L.dispar in a low population density in China.

关 键 词：舞毒蛾 天敌 自然控制 

分 类 号：S763.42[农业科学—森林保护学]