Department of Entomology, Kansas State University, Manhattan, KS, USA.
United States Department of Agriculture - Animal and Plant Health Inspection Services - Plant Protection and Quarantine, Science and Technology, Buzzards Bay, MA, USA.
Pest Manag Sci. 2024 Apr;80(4):1702-1716. doi: 10.1002/ps.7903. Epub 2023 Dec 14.
Highly mobile stored product insects may be able to readily orient in response to food cues and pheromones to attack durable commodities at each link of the postharvest supply chain. A 0.4% deltamethrin-incorporated long-lasting insecticide-incorporated netting (LLIN) is a successful novel preventative integrated pest management (IPM) tactic to intercept dispersing insects after harvest. However, it is unknown whether exposure to LLIN may affect olfaction and orientation to important semiochemicals by immature stored product dermestids, therefore the aim of this study was to assess whether exposure to LLIN disrupts the normal olfactory and chemotactic behavior of warehouse beetle, Trogoderma variabile Ballion (Coleoptera: Dermestidae), and the larger cabinet beetle, T. inclusum Le Conte (Coleoptera: Dermestidae), larval movement in the presence of important semiochemicals, including food kairomones (e.g., flour) and pheromones, e.g., (Z)-14-methyl-8-hexadecenal.
The distance moved by the larval population of T. variabile was reduced by 64% after 24-h exposure to LLIN compared to control netting but not immediately after exposure, while T. inclusum larvae movement was reduced by 50% after 24-h exposure to LLIN compared to the control netting. Generally, the olfaction and orientation of larval dermestids were affected after exposure to LLIN compared to control netting. There were species-linked differences in effects on olfaction after the insects were exposed to LLIN.
Our study suggests the use of LLIN may enhance the effectiveness of other concurrent behaviorally-based strategies such as mating disruption when used as part of a comprehensive IPM program in the postharvest environment. © 2023 Society of Chemical Industry. This article has been contributed to by U.S. Government employees and their work is in the public domain in the USA.
高度移动的仓储害虫能够迅速响应食物线索和信息素来攻击整个农产品供应链中各个环节的耐储商品。在收获后，将 0.4%氯菊酯长效防虫网（LLIN）作为一种新颖的、成功的、预防性的综合虫害管理（IPM）策略，可以用来拦截分散的昆虫。然而，目前尚不清楚接触 LLIN 是否会影响未成熟的仓储性害虫（如皮蠹科）对重要半挥发物的嗅觉和定向能力，因此本研究旨在评估接触 LLIN 是否会破坏仓库皮蠹（鞘翅目：皮蠹科）和大型衣鱼（鞘翅目：皮蠹科）幼虫在重要半挥发物（包括食物信息素，如面粉）和信息素（如（Z）-14-甲基-8-十六碳烯醛）存在时的正常嗅觉和趋化行为。
与对照网相比，暴露于 LLIN 24 小时后，T. variabile 幼虫的移动距离减少了 64%，但并非立即减少，而暴露于 LLIN 24 小时后，T. inclusum 幼虫的移动距离减少了 50%。通常，暴露于 LLIN 后，幼虫皮蠹的嗅觉和定向能力受到影响，与对照网相比。暴露于 LLIN 后，昆虫的嗅觉受到影响，这与物种有关。
我们的研究表明，在收获后环境中，将 LLIN 与其他基于行为的策略（如交配干扰）联合使用，可能会增强其效果，从而作为综合 IPM 计划的一部分。© 2023 化学工业协会。本文由美国政府雇员做出贡献，其工作在美国属于公有领域。
