ABSTRACT

Scarab beetles present a great diversity of life history, in which countless species can act as pollinators, decomposers of organic matter and severe agricultural pests. Different methods have been used to capture adult specimens from different scarab beetle subfamilies in natural or anthropogenic landscapes. Here, we evaluated the preference of scarab beetles for different naturally fermented baits in the Amazon rainforest. We used typical aerial traps baited with banana, banana + sugarcane juice, pineapple, pineapple + sugarcane juice, sugarcane juice, or water, every 2 weeks from July to October 2016 in five sites of the Amazon rainforest. We collected 177 individuals belonging to four subfamilies (Cetoniinae, Dynastinae, Rutelinae, and Scarabaeinae), 14 genera, and 22 species of scarab beetles. Between the different tested baits, sugarcane juice alone showed to be sufficient and efficient to capture more individuals and species of scarab beetles in the Amazon rainforest. Therefore, we encourage its use in composing baits in aerial fruit-baited traps, since it is low-cost and easier to use than when combined with fruits. Finally, our study brought a list of scarab beetle species sampled using a method that is still little used in the survey of scarab beetle diversity in Amazon rainforest.

摘要

圣甲虫的生活史非常多样化，其中无数物种可以充当传粉者、有机物分解者和严重的农业害虫。不同的方法已被用于从自然或人为景观中的不同圣甲虫亚科中捕获成年标本。在这里，我们评估了圣甲虫对亚马逊雨林中不同自然发酵诱饵的偏好。从 2016 年 7 月到 10 月，我们每两周在亚马逊雨林的五个地点使用典型的空中诱捕器，以香蕉、香蕉 + 甘蔗汁、菠萝、菠萝 + 甘蔗汁、甘蔗汁或水为诱饵。我们收集了属于四个亚科（Cetoniinae、Dynastinae、Rutelinae 和 Scarabaeinae）、14 个属和 22 种金龟子甲虫的 177 个个体。在不同的测试诱饵之间，单单甘蔗汁就足以有效地捕获亚马逊雨林中更多的个体和种类的金龟子。因此，我们鼓励在空中水果诱饵中使用它来制作诱饵，因为它比与水果结合使用成本低且更易于使用。最后，我们的研究带来了一份圣甲虫物种清单，采用的方法在亚马逊雨林圣甲虫多样性调查中仍然很少使用。