Reay-Jones Francis P F
Clemson University, School of Agricultural, Forest, and Environmental Sciences, Pee Dee Research and Education Center, 2200 Pocket Road, Florence, SC 29506-9727.
J Insect Sci. 2014;14:98. doi: 10.1673/031.014.98.
A two-year study was conducted in South Carolina wheat (Triticum aestivum L. (Poales: Poaceae)) fields to describe spatial and temporal dynamics of stink bugs (Hemiptera: Pentatomidae), which were sampled weekly with sweep nets. In 2010, the main phytophagous stink bugs caught in a grid sampling plan across two fields were the brown stink bug, Euschistus servus (Say), the rice stink bug, Oebalus pugnax (F.), the southern green stink bug, Nezara viridula (L.), and the red shouldered stink bug, Thyanta custator (F.), for both adults and nymphs. In 2011, the main phytophagous stink bugs were E. servus, O. pugnax, N. viridula, and T. custator across two fields. Adult stink bug counts adjacent to fallow fields were 2.1-fold greater for all species combined compared with counts adjacent to woods. Spatial Analysis by Distance IndicEs (SADIE) indicated significant aggregation for 35% of analyses for adults and nymph stink bugs at each sampling date. As a measure of spatial and temporal stability, positive SADIE association indices among sampling dates recorded 11, 36, 43, and 16% of analyses for adult E. servus and 7, 50, 50, and 14% for adult O. pugnax in fields A, B, C, and D, respectively. Adult and nymph stink bugs were spatially associated within wheat fields based on SADIE association indices. Seasonal counts of stink bugs were spatially associated with spike counts at least once for each species across the four fields. Future work may investigate practices to reduce stink bug buildup on wheat in the spring and movement to susceptible crops such as corn, Zea mays L.
在南卡罗来纳州的小麦（普通小麦，Triticum aestivum L.（禾本目：禾本科））田进行了一项为期两年的研究，以描述蝽象（半翅目：蝽科）的时空动态，每周用扫网进行采样。2010年，在两个田块的网格采样计划中捕获的主要植食性蝽象，对于成虫和若虫而言，均为褐蝽Euschistus servus（Say）、稻绿蝽Oebalus pugnax（F.）、稻褐蝽Nezara viridula（L.）和红肩蝽Thyanta custator（F.）。2011年，两个田块中的主要植食性蝽象为E. servus、O. pugnax、N. viridula和T. custator。与休耕地相邻区域的成年蝽象总数，与树林相邻区域相比，所有物种加起来高出2.1倍。距离指示空间分析（SADIE）表明，在每个采样日期，35%的成虫和若虫蝽象分析显示有显著聚集。作为时空稳定性的一种衡量，在A、B、C和D田块中，成虫E. servus的采样日期之间，正向SADIE关联指数分别记录了11%、36%、43%和16%的分析结果，而成虫O. pugnax分别为7%、50%、50%和14%。根据SADIE关联指数，成年和若虫蝽象在小麦田内存在空间关联。在这四个田块中，每个物种的蝽象季节性数量至少有一次与穗数存在空间关联。未来的工作可能会研究减少春季小麦上蝽象数量增加以及向玉米（Zea mays L.）等易感作物迁移的措施。
