Miller Daniel R, Mayfield Albert E, Poland Therese M
Southern Research Station, USDA Forest Service, 320 Green Street, Athens, GA 30602, USA.
Florida Forest Service, Florida Department of Agriculture and Consumer Services, 1911 SW 34th Street, Gainesville, FL 32608, USA.
J Econ Entomol. 2024 Aug 12;117(4):1526-1536. doi: 10.1093/jee/toae100.
In 2009, we determined the effects of the enantiomeric composition of the kairomone, α-pinene, on trap catches of arboreal beetles (Coleoptera) in stands of eastern pine trees with resin dominated by (+)-α-pinene. We hypothesized that the responses of beetles would correlate with the predominant enantiomer of α-pinene found in host pines. Lures of (+)-, racemic (±), and (-)-α-pinene were added separately to ethanol-baited multiple-funnel traps. Species such as Monarthrum mali (Fitch), Dendroctonus terebrans (Olivier), Ips grandicollis (Eichhoff), and Pachylobius picivorus (Germar) (Coleoptera: Curculionidae) showed a preference for traps co-baited with (-)-α-pinene. α-Pinene enhanced attraction of Hylastes salebrosus Eichhoff, Hylastes porculus Erickson and Hylastes tenuis Eichhoff (Coleoptera: Curculionidae) to ethanol-baited traps with no effects from enantiomeric composition of α-pinene. The attraction of the ambrosia beetles, Xyleborinus saxesenii (Ratzeburg) and Dryoxylon onoharaense (Murayama) (Coleoptera: Curculionidae) to ethanol-baited traps was interrupted by the addition of α-pinene, regardless of enantiomeric composition. Species such as Xylosandrus germanus (Blandford), Cnestus mutilatus (Blandford) and Stenoscelis brevis (Boheman) (Coleoptera: Curculionidae) were unaffected by the presence of α-pinene. Trap catches of some species of longhorn beetles and bark beetle predators (Coleoptera: Cerambycidae, Cleridae, Elateridae, Histeridae, and Trogossitidae) were increased by the addition of α-pinene, although results varied by location. Platysoma spp. (Coleoptera: Histeridae) showed a marked preference for traps co-baited with (+)-α-pinene in Florida and Georgia. In summary, we found that the enantiomeric composition of α-pinene in hosts was not a good predictor of enantiomeric preferences by beetles.
2009年，我们研究了信息素α-蒎烯的对映体组成对生长有以（+）-α-蒎烯为主的树脂的东部松树林中树栖甲虫（鞘翅目）诱捕量的影响。我们假设甲虫的反应将与寄主松树中发现的主要对映体α-蒎烯相关。将（+）-、外消旋（±）-和（-）-α-蒎烯诱饵分别添加到乙醇诱饵的多漏斗诱捕器中。诸如苹果小食象甲（Fitch）、美国南方松甲虫（Olivier）、大齿小蠹（Eichhoff）和松树皮象（Germar）（鞘翅目：象甲科）等物种表现出对与（-）-α-蒎烯共同诱饵的诱捕器的偏好。α-蒎烯增强了粗糙长小蠹、多孔长小蠹和细长长小蠹（鞘翅目：象甲科）对乙醇诱饵诱捕器的吸引力，而α-蒎烯的对映体组成没有影响。无论对映体组成如何，添加α-蒎烯都会中断粉蠹虫类，如欧洲刺胫小蠹（Ratzeburg）和大原材小蠹（Murayama）（鞘翅目：象甲科）对乙醇诱饵诱捕器的吸引力。诸如德国材小蠹（Blandford）、截尾材小蠹（Blandford）和短角材小蠹（Boheman）（鞘翅目：象甲科）等物种不受α-蒎烯存在的影响。添加α-蒎烯增加了一些天牛科和树皮甲虫捕食者（鞘翅目：天牛科、郭公虫科、叩头虫科、阎甲科和锯谷盗科）的诱捕量，尽管结果因地点而异。在佛罗里达州和佐治亚州，扁阎甲属（鞘翅目：阎甲科）表现出对与（+）-α-蒎烯共同诱饵的诱捕器的明显偏好。总之，我们发现寄主中α-蒎烯的对映体组成并不是甲虫对映体偏好的良好预测指标。
