Type of shelter and first description of the echolocation call of disk-winged bat (Thyroptera devivoi)

Abstract: Thyropteridae is a family of bats endemic to the Neotropical region, and Thyroptera devivoi is the only species in the family that occurs exclusively in forest patches within savannas of northern South America and north of the Brazilian Cerrado. Primary data on the species are still scarce. Therefore, in this study our objective was to fill knowledge gaps on geographical distribution, roost-use, and echolocation for the species. We observed a T. devivoi colony of 15 individuals living under a dead palm leaf. The bats used the leaf as a roost for at least four days. After capturing one individual, we confirmed the species identification via skull size and the oblong shape of the adhesive disk. The new record reinforces the association of this species with non-forested formations, and its occurrence mainly in savannas. Echolocation calls of T. devivoi are consistent with those known for the genus, with multiharmonic, low intensity and high frequency pulses. Despite these new data, more studies are certainly needed to enhance distribution data for the species, as well as to clarify the biological and ecological requirements of the species.

摘要：盘翼蝠科（Thyropteridae）是一类仅分布于新热带区的蝙蝠科类群，Devi盘翼蝠（Thyroptera devivoi）是该科中唯一仅见于南美洲北部及巴西塞拉多（Brazilian Cerrado）以北稀树草原内林斑中的物种。目前关于该物种的基础研究数据仍较为匮乏。因此本研究旨在填补该物种在地理分布、栖息位点利用以及回声定位方面的认知空白。我们观测到一个由15只Devi盘翼蝠组成的栖息集群，以一片枯死的棕榈叶作为栖息位点，且该集群至少连续4天停留于此。在捕获1只个体后，我们通过头骨尺寸以及吸附盘的长椭圆形形态确认了该物种的鉴定结果。此次新分布记录进一步佐证了该物种与非林地生境的关联，表明其主要栖息于稀树草原环境中。Devi盘翼蝠的回声定位声波与该属已知类群的声波特征一致，均为多谐波、低强度的高频脉冲信号。尽管获取了上述新数据，但仍需开展更多研究以完善该物种的分布数据，并明确其生物学与生态学需求。