2026-05-29T21:32:36Zhttps://riuma.uma.es/rest/oai/requestoai:riuma.uma.es:10630/295432026-02-03T10:48:50Zcom_10630_2254col_10630_37953
RIUMA. Repositorio Institucional de la Universidad de Málaga
author
Pérez-Ramos, Alejandro
author
Tseng, Jack
author
Grandal D'Anglade, Aurora
author
Rabeder, Gernot
author
Pastor, Francisco
author
Figueirido-Castillo, Francisco Borja
2024-01-31T17:43:17Z
2024-01-31T17:43:17Z
2020-04-01
Pérez-Ramos, A., Tseng, Z. J., Grandal-D’Anglade, A., Rabeder, G., Pastor, F. J., & Figueirido, B. (2020). Biomechanical simulations reveal a trade-off between adaptation to glacial climate and dietary niche versatility in European cave bears. Science advances, 6(14), eaay9462.
https://hdl.handle.net/10630/29543
10.1126/sciadv.aay9462
The cave bear is one of the best known extinct large mammals that inhabited Europe during the “Ice Age,” becoming extinct ≈24,000 years ago along with other members of the Pleistocene megafauna. Long-standing hypotheses speculate that many cave bears died during their long hibernation periods, which were necessary to overcome the severe and prolonged winters of the Last Glacial. Here, we investigate how long hibernation periods in cave bears would have directly affected their feeding biomechanics using CT-based biomechanical simulations of skulls of cave and extant bears. Our results demonstrate that although large paranasal sinuses were necessary for, and consistent with, long hibernation periods, trade-offs in sinus-associated cranial biomechanical traits restricted cave bears to feed exclusively on low energetic vegetal resources during the predormancy period. This biomechanical trade-off constitutes a new key factor to mechanistically explain the demise of this dominant Pleistocene megafaunal species as a direct consequence of climate cooling.
eng
Atribución 4.0 Internacional
Osos de las cavernas
Biomecánica
Cráneo
Biomechanical simulations reveal a trade-off between adaptation to glacial climate and dietary niche versatility in European cave bears.
journal article
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URL
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