Alson H. Smith, Jr. Agricultural Research and Extension Center, Virginia Tech, 595 Laurel Grove Road, Winchester, VA, 22602, USA.
Appalachian Fruit Research Station, USDA, 2217 Wiltshire Road, Kearneysville, WV 25430, USA.
J Econ Entomol. 2022 Feb 9;115(1):109-115. doi: 10.1093/jee/toab226.
The invasive brown marmorated stink bug, Halyomorpha halys (Stål), is a pest of numerous economically important crops in the USA. In the Mid-Atlantic region, it is a significant, direct pest in tree fruit orchards, many of which are bordered by woodlots containing a variety of its deciduous tree and shrub hosts. During the growing season, H. halys moves from woodland habitats into crops, but seasonal changes in its relative abundance between these adjacent habitats have not been examined. Using linear transects of six pheromone-baited pyramid traps that extended from 100 m into the interior of woodlots to 100 m into the interior of adjacent commercial apple orchards in Virginia, spatiotemporal changes in H. halys captures were measured during three growing seasons. Captures of H. halys adults and nymphs were recorded weekly from May through October, and annual data were separated into early, mid, and late-season captures. Only adults were captured during the early season, and there was no indication of a spatial trend in captures across traps in the transects among years. Beginning in mid-season and becoming increasingly apparent by late season, captures of H. halys adults and nymphs tended to become most frequent in traps at the woods and orchard edges and at 50 m into the orchard interior. These findings conform with and expand upon previous research documenting an edge effect for H. halys relative abundance and can inform and support the optimization of perimeter-based management strategies for H. halys in Mid-Atlantic apple orchards.
入侵性的褐纹东方蝽，Halyomorpha halys (Stål)，是美国许多经济重要作物的害虫。在大西洋中部地区，它是果园树木的主要直接害虫，许多果园的周围都是有各种各样的落叶乔木和灌木的林地。在生长季节，H. halys 从林地栖息地迁移到作物中，但尚未研究其在这些相邻栖息地之间的相对丰度的季节性变化。本研究在弗吉尼亚州使用了 6 个性诱捕器的线性样带，这些诱捕器从林地内部的 100 米延伸到相邻商业苹果园的内部 100 米，测量了三个生长季节中 H. halys 的时空变化。从 5 月到 10 月每周记录 H. halys 成虫和若虫的捕获量，每年的数据分为早、中、晚三个季节捕获。只有成虫在早期被捕获，且在各年的样带中，在不同陷阱中没有发现捕获量的空间趋势。从中期开始，到后期变得越来越明显，H. halys 成虫和若虫的捕获量往往在林地和果园边缘的陷阱中以及果园内部 50 米处最为频繁。这些发现与先前记录 H. halys 相对丰度边缘效应的研究相吻合，并可以为大西洋中部苹果园的 H. halys 基于周边的管理策略的优化提供信息和支持。
