Fajemisin Adegboyega, Kaur Satinderpal, Vasquez Alejandro, Racelis Alexis, Kariyat Rupesh
School of Earth Environmental and Marine Sciences, University of Texas Rio Grande Valley, Edinburg, TX, 78539, USA.
Department of Biology, University of Texas Rio Grande Valley, Edinburg, TX, 78539, USA.
Environ Monit Assess. 2023 Feb 6;195(3):366. doi: 10.1007/s10661-023-10972-w.
Vane trapping is one of the most effective methods for sampling flower-visiting arthropods. Despite its importance in pollinator studies, the effects of trap color on the abundance and richness of pollinators are less understood. To test this, we conducted a 3-season field experiment over 2 years with two types of vane traps: yellow and colorless. We set up twelve traps each in three field sites within the Lower Rio Grande Valley in south Texas, planted with Vigna unguiculata, Crotalaria juncea, Raphanus raphanistrum, and Sorghum drummondii. At each site, six colorless vane and six yellow vane traps were placed equidistant from each other. The experiment was replicated three times across three seasons, first during the pre-flowering season, when the crops were in full bloom, and when there was no crop on the field. In total, we collected 1912 insects, out of which 76.7% were pollinators. Generalized Linear Regression analyses showed that yellow traps consistently attracted significantly more arthropods and pollinators, but these differences were also season dependent. Furthermore, we noticed that Hymenoptera, followed by Coleoptera, were the most prevalent orders in both the yellow vane and colorless vane traps. Interestingly, although there was no significant difference in species richness of the arthropods in the yellow and colorless vane traps, our results suggest that trap color plays a significant role in capturing pollinators, including non-target arthropods. Our data add another line of evidence suggesting that trap color should be accounted for designing experiments that estimate pollinator and arthropod community diversity.
风向标诱捕是采集访花节肢动物最有效的方法之一。尽管它在传粉者研究中很重要，但诱捕器颜色对传粉者数量和丰富度的影响却鲜为人知。为了验证这一点，我们在两年内进行了为期三个季节的田间实验，使用了两种类型的风向标诱捕器：黄色和无色的。我们在得克萨斯州南部下里奥格兰德河谷的三个田间地点各设置了12个诱捕器，种植了豇豆、印度麻、野萝卜和德拉蒙德高粱。在每个地点，六个无色风向标诱捕器和六个黄色风向标诱捕器彼此等距放置。该实验在三个季节中重复进行了三次，第一次是在开花前期，第二次是在作物盛开期，第三次是在田间没有作物的时候。我们总共收集了1912只昆虫，其中76.7%是传粉者。广义线性回归分析表明，黄色诱捕器始终吸引着显著更多的节肢动物和传粉者，但这些差异也与季节有关。此外，我们注意到膜翅目昆虫，其次是鞘翅目昆虫，是黄色风向标诱捕器和无色风向标诱捕器中最常见的目。有趣的是，尽管黄色和无色风向标诱捕器中节肢动物的物种丰富度没有显著差异，但我们的结果表明，诱捕器颜色在捕获传粉者（包括非目标节肢动物）方面起着重要作用。我们的数据增加了另一项证据，表明在设计估计传粉者和节肢动物群落多样性的实验时应考虑诱捕器颜色。
