CAJ | 학술논문

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.
수색립견천우Apriona swainsoni （Hope）시위해국괴Sophora japonica Linn.적주요주간해충,화융기갑Dastarcus helophoroides （Fairmaire）시수색립견천우적중요천활곤충.위료명학화융기갑성충여하심조도수색립견천우소재적미서경,본연구채용“Y”형후각의,분별측정료화융기갑성충대수색립견천우유충충분、유유충충도적국괴목질부、유유충충도적국괴수피등적행위반응.결과표명,화융기갑대수색립견천우유충충분화유충도급린근유충충도적목질부균표현출정추향반응,대유유충충도적목질부화유충충분간적추향반응차이불현저;이대천우노숙유충、유충도적수피화미수해무충도적목질부표현출일정적부추향반응.연구결과표명천우유충충분화유유충충도적국괴목질부능구석방인유천활성충적휘발성성분.
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.