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| Auteurs principaux: | , , , |
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| Format: | Dataset Open Access |
| Langue: | en |
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PANGAEA
2023
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| Accès en ligne: | https://doi.org/10.1594/PANGAEA.891266 |
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| _version_ | 1867171857819500544 |
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| author | Schwab, Julia A Kriwet, Jürgen Weber, Gerhard Pfaff, Cathrin |
| author_facet | Schwab, Julia A Kriwet, Jürgen Weber, Gerhard Pfaff, Cathrin |
| collection | Datos científicos de ciencias marinas y ambientales |
| contents | Carnivora is a highly diverse and successful group of mammals representing key stone predators in food webs. They originated in the Palaeocene and developed numerous lifestyles, locomotion modes and hunting strategies during their evolutionary history. Mechanosensory organs, as the inner ear (senses of equilibrium and hearing) represent essential anatomical systems to obtain insights into function, ecology and phylogeny of extant but also extinct vertebrates. Here, we examined bony labyrinths of a broad sample of extinct and extant carnivoran species using µCT scans to obtain new information about hunting behaviours of these ancient carnivorans. Bony labyrinths were digitally reconstructed and measurements were taken directly on these 3D models. Principal component analyses evidently separate morphospaces based on various hunting strategies (pursuit, pounce, ambush and occasional) but also support their phylogenetic relationships (Canoidea vs. Feloidea). The height, width and length of the semicircular canals show functional morphological adaptations, whereas the diameter of the canals, the height of the cochlea and particularly the angle between the lateral semicircular canal and the cochlea indicate a phylogenetic signal. The results demonstrate that the bony labyrinth provides a powerful ecological proxy reflecting both predatory habits as well as phylogenetic relationships in extinct and extant carnivorans. |
| format | Dataset Open Access |
| id | pangaea_https___doi_org_10_1594_PANGAEA_891266 |
| institution | PANGAEA |
| language | en |
| publishDate | 2023 |
| publisher | PANGAEA |
| record_format | pangaea |
| spellingShingle | Carnivoran bony labyrinth morphometry and characteristics Schwab, Julia A Kriwet, Jürgen Weber, Gerhard Pfaff, Cathrin Carnivora is a highly diverse and successful group of mammals representing key stone predators in food webs. They originated in the Palaeocene and developed numerous lifestyles, locomotion modes and hunting strategies during their evolutionary history. Mechanosensory organs, as the inner ear (senses of equilibrium and hearing) represent essential anatomical systems to obtain insights into function, ecology and phylogeny of extant but also extinct vertebrates. Here, we examined bony labyrinths of a broad sample of extinct and extant carnivoran species using µCT scans to obtain new information about hunting behaviours of these ancient carnivorans. Bony labyrinths were digitally reconstructed and measurements were taken directly on these 3D models. Principal component analyses evidently separate morphospaces based on various hunting strategies (pursuit, pounce, ambush and occasional) but also support their phylogenetic relationships (Canoidea vs. Feloidea). The height, width and length of the semicircular canals show functional morphological adaptations, whereas the diameter of the canals, the height of the cochlea and particularly the angle between the lateral semicircular canal and the cochlea indicate a phylogenetic signal. The results demonstrate that the bony labyrinth provides a powerful ecological proxy reflecting both predatory habits as well as phylogenetic relationships in extinct and extant carnivorans. |
| title | Carnivoran bony labyrinth morphometry and characteristics |
| topic | |
| url | https://doi.org/10.1594/PANGAEA.891266 |