Richardson Kate V, Alston Diane G, Spears Lori R
Department of Biology, Utah State University, Logan, UT 84322, USA.
Insects. 2023 Jan 25;14(2):125. doi: 10.3390/insects14020125.
In its native range, (Stål) is suppressed by parasitoids in the genus (Hymenoptera: Scelionidae). native to Utah have demonstrated low parasitism of , while adventive (Ashmead) have shown parasitism of up to 20%. Custom rubber septa lures containing stink bug kairomones, n-tridecane (attractant), and (E)-2-decenal (repellent), at 100%, 90%, and 80% levels of attractant (10 mg load rate), were placed adjacent to sentinel egg masses in northern Utah field trials. Egg masses were evaluated for the presence and intensity (proportion of parasitized eggs) of parasitism. Parasitism by and (Ashmead) was low; however, the 100% lure showed double the parasitism of the control and more than three times that of the 90% and 80%. Two-way choice mesocosm trials in the laboratory evaluated previous lures and a lower load rate of 5 mg-100% attractant treatment. Lures of 10 mg at 100% and 80% were more attractive to than the control, while 5 mg at 100% and 10 mg at 90% showed no significant attraction. Our results support a proof-of-concept of rubber septa as release devices for kairomones to attract and provide a baseline for future field-based studies.
在其原生范围内，（斯塔尔）受到（膜翅目：缘腹细蜂科）属寄生蜂的抑制。原产于犹他州的[某种昆虫]对[目标昆虫]的寄生率较低，而外来的（阿什米德）对[目标昆虫]的寄生率高达20%。在犹他州北部的田间试验中，将含有椿象利它素、正十三烷（引诱剂）和（E）-2-癸烯醛（驱避剂）的定制橡胶隔片诱捕器，以引诱剂含量分别为100%、90%和80%（10毫克负载率）的水平，放置在哨兵[目标昆虫]卵块旁边。对卵块进行寄生情况（寄生卵的比例）和寄生强度评估。[两种寄生蜂名称]的寄生率较低；然而，100%引诱剂处理的寄生率是对照的两倍，是90%和80%引诱剂处理的三倍多。在实验室进行的双向选择中型试验评估了先前的诱捕器以及5毫克-100%引诱剂处理的较低负载率。100%和80%引诱剂含量为10毫克的诱捕器比对照对[目标昆虫]更具吸引力，而100%引诱剂含量为5毫克和90%引诱剂含量为10毫克的诱捕器未显示出显著吸引力。我们的结果支持了橡胶隔片作为利它素释放装置以吸引[目标昆虫]的概念验证，并为未来基于田间的研究提供了基线。
