Mandibular ecomorphology in the genus ursus (Ursidae, Carnivora) : relevance for the palaeoecological adaptations of cave bears (U. spelaeus) from Scladina cave
- Author
- Daniel Charters, Richard P. Brown, Grégory Abrams (UGent) , Kévin Di Modica, Stéphane Pirson, Isabelle De Groote (UGent) , Luca Ghiraldi and Carlo Meloro
- Organization
- Abstract
- Considerable morphological and ecological diversity has been found in extinct and extant members of the bear genus, Ursus, and appears to be key in explaining how they have thrived across vast ecological gradients. One example is the cave bear Ursus spelaeus. We applied 2D geometric morphometric techniques to describe morphological changes in the mandibles of extant Ursus species to further interpret the palaeoecology of U. spelaeus. Ursus species were discriminated using their mandibular morphology, which showed intra and interspecific shape variation that was indirectly linked to climatic adaptations through dietary variation. Mandibles of bears that inhabit colder, drier and more seasonal environments were generally slender with large diastema and a dorsoventrally smaller ramus. In contrast, species from warmer environments with higher levels of precipitation were found to have a dorsoventrally taller ramus (relative to the corpus). Discriminant function analyses of the morphology of U. spelaeus suggested adaptations to a series of fluctuating environments through time, helping to assess previously proposed Marine Isotope Stages for sedimentary deposits in Scladina Cave. Our geometric morphometrics analyses of bear mandibular ecomorphology demonstrates how geometric morphometrics provides a valuable tool to enhance paleoenvironmental reconstructions within deposits of the same fossil site.
- Keywords
- Quaternary, palaeoclimate, evolutionary ecology, mandible, geometric morphometrics, Carnivora, COMPLETE MITOCHONDRIAL GENOME, BROWN BEAR, PALEOBIOLOGICAL IMPLICATIONS, GEOMETRIC MORPHOMETRICS, FUNCTIONAL-MORPHOLOGY, CLIMATE SURFACES, R PACKAGE, SHAPE, MIDDLE, REVEAL
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Citation
Please use this url to cite or link to this publication: http://hdl.handle.net/1854/LU-01J9958FYFBSYBP56A0SSTG1N1
- MLA
- Charters, Daniel, et al. “Mandibular Ecomorphology in the Genus Ursus (Ursidae, Carnivora) : Relevance for the Palaeoecological Adaptations of Cave Bears (U. Spelaeus) from Scladina Cave.” HISTORICAL BIOLOGY, vol. 37, no. 6, 2025, pp. 1553–67, doi:10.1080/08912963.2024.2377703.
- APA
- Charters, D., Brown, R. P., Abrams, G., Di Modica, K., Pirson, S., De Groote, I., … Meloro, C. (2025). Mandibular ecomorphology in the genus ursus (Ursidae, Carnivora) : relevance for the palaeoecological adaptations of cave bears (U. spelaeus) from Scladina cave. HISTORICAL BIOLOGY, 37(6), 1553–1567. https://doi.org/10.1080/08912963.2024.2377703
- Chicago author-date
- Charters, Daniel, Richard P. Brown, Grégory Abrams, Kévin Di Modica, Stéphane Pirson, Isabelle De Groote, Luca Ghiraldi, and Carlo Meloro. 2025. “Mandibular Ecomorphology in the Genus Ursus (Ursidae, Carnivora) : Relevance for the Palaeoecological Adaptations of Cave Bears (U. Spelaeus) from Scladina Cave.” HISTORICAL BIOLOGY 37 (6): 1553–67. https://doi.org/10.1080/08912963.2024.2377703.
- Chicago author-date (all authors)
- Charters, Daniel, Richard P. Brown, Grégory Abrams, Kévin Di Modica, Stéphane Pirson, Isabelle De Groote, Luca Ghiraldi, and Carlo Meloro. 2025. “Mandibular Ecomorphology in the Genus Ursus (Ursidae, Carnivora) : Relevance for the Palaeoecological Adaptations of Cave Bears (U. Spelaeus) from Scladina Cave.” HISTORICAL BIOLOGY 37 (6): 1553–1567. doi:10.1080/08912963.2024.2377703.
- Vancouver
- 1.Charters D, Brown RP, Abrams G, Di Modica K, Pirson S, De Groote I, et al. Mandibular ecomorphology in the genus ursus (Ursidae, Carnivora) : relevance for the palaeoecological adaptations of cave bears (U. spelaeus) from Scladina cave. HISTORICAL BIOLOGY. 2025;37(6):1553–67.
- IEEE
- [1]D. Charters et al., “Mandibular ecomorphology in the genus ursus (Ursidae, Carnivora) : relevance for the palaeoecological adaptations of cave bears (U. spelaeus) from Scladina cave,” HISTORICAL BIOLOGY, vol. 37, no. 6, pp. 1553–1567, 2025.
@article{01J9958FYFBSYBP56A0SSTG1N1,
abstract = {{Considerable morphological and ecological diversity has been found in extinct and extant members of the bear genus, Ursus, and appears to be key in explaining how they have thrived across vast ecological gradients. One example is the cave bear Ursus spelaeus. We applied 2D geometric morphometric techniques to describe morphological changes in the mandibles of extant Ursus species to further interpret the palaeoecology of U. spelaeus. Ursus species were discriminated using their mandibular morphology, which showed intra and interspecific shape variation that was indirectly linked to climatic adaptations through dietary variation. Mandibles of bears that inhabit colder, drier and more seasonal environments were generally slender with large diastema and a dorsoventrally smaller ramus. In contrast, species from warmer environments with higher levels of precipitation were found to have a dorsoventrally taller ramus (relative to the corpus). Discriminant function analyses of the morphology of U. spelaeus suggested adaptations to a series of fluctuating environments through time, helping to assess previously proposed Marine Isotope Stages for sedimentary deposits in Scladina Cave. Our geometric morphometrics analyses of bear mandibular ecomorphology demonstrates how geometric morphometrics provides a valuable tool to enhance paleoenvironmental reconstructions within deposits of the same fossil site.}},
author = {{Charters, Daniel and Brown, Richard P. and Abrams, Grégory and Di Modica, Kévin and Pirson, Stéphane and De Groote, Isabelle and Ghiraldi, Luca and Meloro, Carlo}},
issn = {{0891-2963}},
journal = {{HISTORICAL BIOLOGY}},
keywords = {{Quaternary,palaeoclimate,evolutionary ecology,mandible,geometric morphometrics,Carnivora,COMPLETE MITOCHONDRIAL GENOME,BROWN BEAR,PALEOBIOLOGICAL IMPLICATIONS,GEOMETRIC MORPHOMETRICS,FUNCTIONAL-MORPHOLOGY,CLIMATE SURFACES,R PACKAGE,SHAPE,MIDDLE,REVEAL}},
language = {{eng}},
number = {{6}},
pages = {{1553--1567}},
title = {{Mandibular ecomorphology in the genus ursus (Ursidae, Carnivora) : relevance for the palaeoecological adaptations of cave bears (U. spelaeus) from Scladina cave}},
url = {{http://doi.org/10.1080/08912963.2024.2377703}},
volume = {{37}},
year = {{2025}},
}
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