Babu Arun, Del Pozo-Valdivia Alejandro I, Reisig Dominic D
Department of Entomology and Plant Pathology, North Carolina State University, 207 Research Station Road, Plymouth, NC.
Cooperative Extension Monterey County, University of California, 1432 Abbott Street, Salinas, CA.
Environ Entomol. 2020 Jun 13;49(3):699-708. doi: 10.1093/ee/nvaa041.
The brown stink bug, Euschistus servus (Say), is a damaging pest of multiple crops in the southeastern United States. In addition to crops, both the weedy field borders and wooded areas of a typical farmscape in this region harbor E. servus host plants, many of which are temporally and spatially limiting in availability or nutritional suitability. Therefore, local dispersal is required so that individuals efficiently track and utilize host resources. This research sought to establish the baseline flight capacity of adult E. servus across the season in relation to body weight, sex, and plant host use with a flight mill system. Across this 2-yr study, among the individuals with a flight response in the flight mill, 90.1% of individuals flew in a range of >0-1 km, with an individual maximum flight distance of 15.9 km. In 2017, mean total distance flown varied across the season. Except for the individuals collected from corn in 2019, during both 2017 and 2019, the highest numerical mean flight potential occurred soon after overwintering emergence and a relatively low flight potential occurred during the cropping season. Individuals collected from wheat, corn, and early season weeds lost a higher proportion of body weight after flight than did individuals from soybean and late season weeds. The baseline dispersal potential information generated from this study can be extrapolated to the farmscape level aiming to develop, plan, and implement E. servus management programs.
褐臭蝽（Euschistus servus (Say)）是美国东南部多种作物的有害害虫。除了农作物外，该地区典型农田景观中的杂草丛生的田边和林区都有褐臭蝽的寄主植物，其中许多寄主植物在时间和空间上的可利用性或营养适宜性都受到限制。因此，需要进行局部扩散，以便个体有效地追踪和利用寄主资源。本研究旨在利用飞行磨系统确定成年褐臭蝽在整个季节与体重、性别和寄主植物利用相关的基线飞行能力。在这项为期两年的研究中，在飞行磨中有飞行反应的个体中，90.1%的个体飞行距离在0至1公里以上，个体最大飞行距离为15.9公里。2017年，平均飞行总距离随季节变化。除了2019年从玉米上采集的个体外，在2017年和2019年期间，最高的数值平均飞行潜力出现在越冬羽化后不久，而在作物生长季节飞行潜力相对较低。从小麦、玉米和早期杂草上采集的个体在飞行后体重损失的比例高于从大豆和晚期杂草上采集的个体。本研究产生的基线扩散潜力信息可外推到农田景观层面，旨在制定、规划和实施褐臭蝽管理计划。
