Academic Journal
Daubenton's bats maintain stereotypical echolocation behaviour and a lombard response during target interception in light.
| Title: | Daubenton's bats maintain stereotypical echolocation behaviour and a lombard response during target interception in light. |
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| Authors: | Uebel, Astrid Saermark, Pedersen, Michael Bjerre, Beedholm, Kristian, Stidsholt, Laura, Skalshøi, Marie Rosenkjaer, Foskolos, Ilias, Madsen, Peter Teglberg |
| Source: | BMC Zoology; 4/28/2024, Vol. 9 Issue 1, p1-12, 12p |
| Abstract: | Most bats hunt insects on the wing at night using echolocation as their primary sensory modality, but nevertheless maintain complex eye anatomy and functional vision. This raises the question of how and when insectivorous bats use vision during their largely nocturnal lifestyle. Here, we test the hypothesis that the small insectivorous bat, Myotis daubentonii, relies less on echolocation, or dispenses with it entirely, as visual cues become available during challenging acoustic noise conditions. We trained five wild-caught bats to land on a spherical target in both silence and when exposed to broad-band noise to decrease echo detectability, while light conditions were manipulated in both spectrum and intensity. We show that during noise exposure, the bats were almost three times more likely to use multiple attempts to solve the task compared to in silent controls. Furthermore, the bats exhibited a Lombard response of 0.18 dB/dB |
| Subject Terms: | BATS, AUDITORY masking, INSECT wings, NOISE, ORDER picking systems, INSECT flight |
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| ISSN: | 20563132 |
| DOI: | 10.1186/s40850-024-00200-4 |
| Database: | Complementary Index |