Publikation: Consistent long-distance foraging flights across years and seasons at colony level in a neotropical bat
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All foraging animals face a trade-off: how much time should they invest in exploitation of known resources versus exploration to discover new resources? For group-living central place foragers, this balance is challenging. Due to the nature of their movement patterns, exploration and exploitation are often mutually exclusive, while the availability of social information may discourage individuals from exploring. To examine these trade-offs, we GPS-tracked groups of greater spear-nosed bats (Phyllostomus hastatus) from three colonies on Isla Colón, Panamá. During the dry season, when these omnivores forage on the nectar of unpredictable balsa flowers, bats consistently travelled long distances to remote, colony-specific foraging areas, bypassing flowering trees closer to their roosts. They continued using these areas in the wet season, when feeding on a diverse, presumably ubiquitous diet, but also visited other, similarly distant foraging areas. Foraging areas were shared within but not always between colonies. Our longitudinal dataset suggests that bats from each colony invest in long-distance commutes to socially learned shared foraging areas, bypassing other available food patches. Rather than exploring nearby resources, these bats exploit colony-specific foraging locations that appear to be culturally transmitted. These results give insight into how social animals might diverge from optimal foraging.
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CALDERÓN CAPOTE, Maria C., Marielle VAN TOOR, Michael Teague O'MARA, Travis D. BAYER, Margaret C. CROFOOT, Dina K. N. DECHMANN, 2024. Consistent long-distance foraging flights across years and seasons at colony level in a neotropical bat. In: Biology Letters. Royal Society of London. 2024, 20(12), 20240424. ISSN 1744-9561. eISSN 1744-957X. Verfügbar unter: doi: 10.1098/rsbl.2024.0424BibTex
@article{CalderonCapote2024-12Consi-71630, year={2024}, doi={10.1098/rsbl.2024.0424}, title={Consistent long-distance foraging flights across years and seasons at colony level in a neotropical bat}, number={12}, volume={20}, issn={1744-9561}, journal={Biology Letters}, author={Calderón Capote, Maria C. and van Toor, Marielle and O'Mara, Michael Teague and Bayer, Travis D. and Crofoot, Margaret C. and Dechmann, Dina K. N.}, note={Article Number: 20240424} }
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