Abstract：
The cocoa pod borer (CPB), Conopomorpha cramerella, is a major economic pest of cocoa, Theobroma cacao, in Southeast Asia. CPB monitoring programs currently use a costly synthetic pheromone lure attractive to males. Field trapping experiments demonstrating an effective plant-based alternative are presented in this study. Five lychee-based products were compared for their attractiveness to CPB males. The organic lychee flavor extract (OLFE), the most attractive product, captured significantly more CPB as a 1 mL vial formulation than unbaited traps, while being competitive with the commercial pheromone lures. Additional experiments show that a 20 mL membrane OLFE lure was most effective, attracting significantly more CPB than the pheromone. When the kairomone and pheromone lures were combined, no additive or synergistic effects were observed. Concentrating the OLFE product (OLFEc) using a rotary evaporator increased the lure attractiveness to field longevity for up to 28 weeks; in contrast, pheromone lures were effective for approximately 4 weeks. The 20 mL concentrated OLFE membrane lures should provide a cheaper and more efficient monitoring tool for CPB than the current commercial pheromone lures.
摘要：
可可豆荚虫（CPB），矢车菊,是可可的主要经济害虫，可可病，在东南亚。CPB监测计划目前使用昂贵的合成信息素引诱吸引男性。本研究提出了田间诱捕实验，证明了一种有效的基于植物的替代方案。比较了五种基于荔枝的产品对CPB男性的吸引力。有机荔枝风味提取物（OLFE），最吸引人的产品,作为1毫升小瓶制剂捕获的CPB明显多于未诱饵的陷阱，同时与商业信息素诱饵竞争。额外的实验表明，20mL膜OLFE引诱是最有效的，比信息素吸引更多的CPB。当kairomone和信息素诱饵结合在一起时，没有观察到累加或协同作用。使用旋转蒸发器浓缩OLFE产品（OLFEc）增加了现场寿命长达28周的诱惑吸引力；相比之下，信息素诱饵有效约4周。与目前的商业信息素诱饵相比，20mL浓缩的OLFE膜诱饵应为CPB提供更便宜，更有效的监测工具。
