花绒寄甲成虫搜索锈色粒肩天牛行为的测定  

Searching Behaviore of Adult Dastarcus helophoroides(Fairmaire)(Coleoptera:Zopheridae) for Apriona swainsoni(Hope)(Coleoptera:Cerambycidae)

作　　者：卢希平[1] 姜莉[2] 魏建荣[3] 

机构地区：[1]山东农业大学植物保护学院,泰安271018 [2]泰安市林业局,泰安271000 [3]河北大学生命科学学院,保定071002

出　　处：《中国生物防治学报》2012年第4期594-598,共5页Chinese Journal of Biological Control

基　　金：山东省自然基金(Y2008D37);中央级公益性科研院所科研业务费专项资金(CAFRIF200703)

摘　　要：锈色粒肩天牛Apriona swainsoni(Hope)是为害国槐Sophora japonica Linn.的主要蛀干害虫,花绒寄甲Dastarcus helophoroides(Fairmaire)是锈色粒肩天牛的重要天敌昆虫。为了明确花绒寄甲成虫如何寻找到锈色粒肩天牛所在的微栖境,本研究采用"Y"型嗅觉仪,分别测定了花绒寄甲成虫对锈色粒肩天牛幼虫虫粪、有幼虫虫道的国槐木质部、有幼虫虫道的国槐树皮等的行为反应。结果表明,花绒寄甲对锈色粒肩天牛幼虫虫粪和有虫道及邻近幼虫虫道的木质部均表现出正趋向反应,对有幼虫虫道的木质部和幼虫虫粪间的趋向反应差异不显著;而对天牛老熟幼虫、有虫道的树皮和未受害无虫道的木质部表现出一定的负趋向反应。研究结果表明天牛幼虫虫粪和有幼虫虫道的国槐木质部能够释放引诱天敌成虫的挥发性成分。Dastarcus helophoroides （Fairmaire） is an important insect natural enemy ofApriona swainsoni （Hope）, a serious wood borer of Sophorajaponica Linn., which is a city-tree of many cities in northern China. In order to unravel the mechanism underlying host searching behavior ofD. helophoroides adults, the olfactory responses of D. helophoroides adults toward host larval frass, wood and bark with host larval tunnels were investigated by using Y-tube olfactometer. Results showed that volatiles from larval frass ofA. swainsoni, wood with larval tunnels, and wood without larval tunnels but from the infested tree were significantly attractive to D. helophoroides when compared with blank air. Host larvae, bark with host larval tunnels, and wood from health tree were not attractive to D. helophoroides. D. helophoroides adults showed no significantly difference in orientation between larval frass and wood with larval tunnels in the Y-tube olfactory. These results indicate that larval frass ofA. swainsoni and wood with larval tunnels could release semiochemicals that are attractive to the natural enemy.

关 键 词：花绒寄甲 锈色粒肩天牛 三级营养互作 蛀干害虫 “Y”型嗅觉仪 

分 类 号：S763.306[农业科学—森林保护学] S718.7[农业科学—林学]