Gale Cody C, Ferguson Beth, Rodriguez-Saona Cesar, Shields Vonnie D C, Zhang Aijun
Invasive Insect Biocontrol and Behavior Laboratory, Beltsville Agricultural Research Center, United States Department of Agriculture-Agricultural Research Service, Beltsville, MD 20705, USA.
Phillip E. Marucci Center for Blueberry and Cranberry Research and Extension, Rutgers University, Chatsworth, NJ 08019, USA.
Insects. 2024 Jan 10;15(1):47. doi: 10.3390/insects15010047.
We evaluated a novel push-pull control strategy for protecting highbush blueberry, , against spotted-wing drosophila (SWD), . Methyl benzoate (MB) was used as the pushing agent and a previously tested SWD attractive blend of lure-scents was used as the pulling agent. MB dispensers (push) were hung in the canopy and lure-scent dispensers (pull) were hung in yellow jacket traps filled with soapy water around the blueberry bushes. Blueberries were sampled weekly, and any infestation was inspected by examining the breathing tubes of SWD eggs which protrude through the skin of infested fruit. The frequency of infestation, i.e., the proportion of berries infested with at least one egg, and the extent of infestation, i.e., the mean number of eggs in infested berries, were significantly reduced in treatments receiving MB dispensers as a pushing agent when infestation rates were very high. However, the mass trapping devices as a pulling agent did not provide comparable protection on their own and did not produce additive protection when used in combination with the MB dispensers in push-pull trials. We conclude that MB has the potential to be implemented as a spatial repellent/oviposition deterrent to reduce SWD damage in blueberry under field conditions and does not require the SWD attractant as a pulling agent to achieve crop protection.
我们评估了一种用于保护高丛蓝莓免受斑翅果蝇（SWD）侵害的新型推拉控制策略。苯甲酸甲酯（MB）用作推动剂，一种先前测试过的SWD引诱气味混合物用作引诱剂。MB分配器（推）悬挂在树冠中，引诱气味分配器（拉）悬挂在蓝莓灌木丛周围装满肥皂水的黄夹克诱捕器中。每周对蓝莓进行采样，并通过检查从受侵染果实表皮突出的SWD卵的呼吸管来检查是否有任何侵染情况。当侵染率非常高时，在接受MB分配器作为推动剂的处理中，侵染频率（即至少有一个卵的受侵染浆果的比例）和侵染程度（即受侵染浆果中的平均卵数）显著降低。然而，作为引诱剂的大量诱捕装置本身并不能提供可比的保护，并且在推拉试验中与MB分配器结合使用时也不会产生额外的保护作用。我们得出结论，MB有潜力作为一种空间驱避剂/产卵抑制剂在田间条件下减少蓝莓中SWD的损害，并且不需要SWD引诱剂作为引诱剂来实现作物保护。
