ArticleThe Journal of experimental biology2023
Calibrated microphone array recordings reveal that a gleaning bat emits low-intensity echolocation calls even in open-space habitat.
Article in The Journal of experimental biology, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 4 papers.
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Who cites it
4 citing papers in PubMed.
- BATSY4-PRO: an open-source multichannel ultrasound recorder for field bioacoustics.BMC ecology and evolution · 2026Article
- Looking ahead: echolocation and flight behaviors of two fruit bat species navigating a corridor.Journal of comparative physiology. A, Neuroethology, sensory, neural, and behavioral physiology · 2026Article
- Variation in echolocation call emission of Neotropical insect-eating bats in response to shifting ambient temperatures.The Journal of experimental biology · 2025Article
- Widefield acoustics heuristic: advancing microphone array design for accurate spatial tracking of echolocating bats.BMC ecology and evolution · 2025Article
Corrections and comments
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Authors and funding
4 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Echolocating bats use ultrasound for orientation and prey capture in darkness. Ultrasound is strongly attenuated in air. Consequently, aerial-hawking bats generally emit very intense echolocation calls to maximize detection range. However, call levels vary more than tenfold (>20 dB) between species and are tightly linked to the foraging strategy. The brown long-eared bat (Plecotus auritus) is a primarily gleaning, low-amplitude species that may occasionally hawk airborne prey. We used state-of-the-art calibrated acoustic 3D-localization and automated call analysis to measure P. auritus' source levels. Plecotus auritus emits echolocation calls of low amplitude (92 dB rmsSPL re. 20 µPa at 10 cm) even while flying in open-space. While P. auritus thus probably benefits from delayed evasive manoeuvres of eared insects, we propose that low-amplitude echolocation did not evolve as an adaptive countermeasure, but is limited by morphological constraints.
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