摘要:为确定松瘿小卷蛾（Cydia zebeana）对寄主的定位习性，以及探讨对其的综合防治方法，通过Y型管嗅觉仪行为选择实验，分析松瘿小卷蛾及其两种寄生性天敌小卷蛾革腹茧蜂（Ascogaster olethreuti）和卷蛾长体茧蜂（Macrocentrus sp.）对寄主兴安落叶松（Larix gmelinii）的9种不同浓度挥发物的行为反应。结果表明，对雌蛾产生引诱作用的挥发物为3-蒈烯、水芹烯，产生驱避作用的挥发物为月桂烯、罗勒烯、莰烯；（R）-α-蒎烯表现为低浓度引诱高浓度驱避。对雄蛾产生引诱作用的挥发物为（S）-β-蒎烯，产生驱避作用的挥发物为月桂烯、3-蒈烯、（S）-α-蒎烯、莰烯。对小卷蛾革腹茧蜂有引诱作用的挥发物为（S）-β-蒎烯、（S）-α-蒎烯、叶醇，产生驱避作用的挥发物为罗勒烯、莰烯、水芹烯；对卷蛾长体茧蜂有引诱作用的挥发物为（S）-β-蒎烯、（S）-α-蒎烯、（R）-α-蒎烯、叶醇，产生驱避作用的挥发物为罗勒烯、水芹烯。说明在利用推拉策略防控松瘿小卷蛾时，月桂烯、叶醇和（S）-α-蒎烯可用于保护目标林，驱避害虫吸引天敌；水芹烯可以结合化学防治施用于饵木林，诱杀害虫而驱避寄生蜂。



Abstract:In order to determine the olfactory-behavioral mechanisms underlying the host-finding of Cydia zebeana and to explore environmentally sound IPM control methods, the behavioral responses of C. zebeana adults (virgin females and males) and its two parasitic wasps, Ascogaster olethreuti and Macrocentrus sp. to different concentrations of nine larch volatiles (Larix gmelinii, both bark and needle volatiles) were tested in the laboratory using Y-tube olfactomter. The results showed that females of C. zebeana were significantly attracted to (+)-3-carene and (R)-(-)-α-phellandrene, and were strongly repelled by myrcene, ocimene, and camphene. (R)-α-pinene was attractive at low concentrations, but repellent at high concentrations. In contrast, C. zebeana males were attracted to (S)-β-pinene, and repelled by myrcene, (+)-3-carene, (S)-α-pinene and camphene. A. olethreuti adults were attracted to (S)-β-pinene, (S)-α-pinene and phytol, while they were repelled by ocimene, camphene, and (R)-(-)-α-phellandrene. Macrocentrus sp. were attracted to (S)-β-pinene, (S)-α-pinene, phytol and (R)-α-pinene. They were also repelled by ocimene and (R)-(-)-α-phellandrene. As a part of push-pull control strategies against C. zebeana, myrcene, phytol, and (S)-α-pinene can be applied to the target forests to repel the moths, and to attract their parasitoid wasps, whereas (R)-(-)-α-phellandrene can be applied to the bait trees in combination with insecticide sprays to attract the moths and to repel parasitoid wasps.





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