Functional constraints channel mandible shape ontogenies in rodents
In mammals, postnatal growth plays an essential role in the acquisition of the adult shape. During this period, the mandible undergoes many changing functional constraints, leading to spatialization of bone formation and remodelling to accommodate various dietary and behavioural changes. The interac...
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| Format: | Article |
| Language: | English |
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The Royal Society
2022-10-01
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| Series: | Royal Society Open Science |
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| Online Access: | https://royalsocietypublishing.org/doi/10.1098/rsos.220352 |
| _version_ | 1797845327257010176 |
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| author | Morgane Dubied Sophie Montuire Nicolas Navarro |
| author_facet | Morgane Dubied Sophie Montuire Nicolas Navarro |
| author_sort | Morgane Dubied |
| collection | DOAJ |
| description | In mammals, postnatal growth plays an essential role in the acquisition of the adult shape. During this period, the mandible undergoes many changing functional constraints, leading to spatialization of bone formation and remodelling to accommodate various dietary and behavioural changes. The interactions between the bone, muscles and teeth drive this developmental plasticity, which, in turn, could lead to convergences in the developmental processes constraining the directionality of ontogenies, their evolution and thus the adult shape variation. To test the importance of the interactions between tissues in shaping the ontogenetic trajectories, we compared the mandible shape at five postnatal stages on three rodents: the house mouse, the Mongolian gerbil and the golden hamster, using geometric morphometrics. After an early shape differentiation, by both longer gestation and allometric scaling in gerbils or early divergence of postnatal ontogeny in hamsters in comparison with the mouse, the ontogenetic trajectories appear more similar around weaning. The changes in muscle load associated with new food processing and new behaviours at weaning seem to impose similar physical constraints on the mandible, driving the convergences of the ontogeny at that stage despite an early anatomical differentiation. Nonetheless, mice present a rather different timing compared with gerbils or hamsters. |
| first_indexed | 2024-04-09T17:37:14Z |
| format | Article |
| id | doaj.art-52a33a17f37a44e2a3e863475ffe6913 |
| institution | Directory Open Access Journal |
| issn | 2054-5703 |
| language | English |
| last_indexed | 2024-04-09T17:37:14Z |
| publishDate | 2022-10-01 |
| publisher | The Royal Society |
| record_format | Article |
| series | Royal Society Open Science |
| spelling | doaj.art-52a33a17f37a44e2a3e863475ffe69132023-04-17T11:00:59ZengThe Royal SocietyRoyal Society Open Science2054-57032022-10-0191010.1098/rsos.220352Functional constraints channel mandible shape ontogenies in rodentsMorgane Dubied0Sophie Montuire1Nicolas Navarro2Biogéosciences, UMR 6282 CNRS, EPHE, Université Bourgogne Franche-Comté, 6 bd Gabriel, 21000 Dijon, FranceBiogéosciences, UMR 6282 CNRS, EPHE, Université Bourgogne Franche-Comté, 6 bd Gabriel, 21000 Dijon, FranceBiogéosciences, UMR 6282 CNRS, EPHE, Université Bourgogne Franche-Comté, 6 bd Gabriel, 21000 Dijon, FranceIn mammals, postnatal growth plays an essential role in the acquisition of the adult shape. During this period, the mandible undergoes many changing functional constraints, leading to spatialization of bone formation and remodelling to accommodate various dietary and behavioural changes. The interactions between the bone, muscles and teeth drive this developmental plasticity, which, in turn, could lead to convergences in the developmental processes constraining the directionality of ontogenies, their evolution and thus the adult shape variation. To test the importance of the interactions between tissues in shaping the ontogenetic trajectories, we compared the mandible shape at five postnatal stages on three rodents: the house mouse, the Mongolian gerbil and the golden hamster, using geometric morphometrics. After an early shape differentiation, by both longer gestation and allometric scaling in gerbils or early divergence of postnatal ontogeny in hamsters in comparison with the mouse, the ontogenetic trajectories appear more similar around weaning. The changes in muscle load associated with new food processing and new behaviours at weaning seem to impose similar physical constraints on the mandible, driving the convergences of the ontogeny at that stage despite an early anatomical differentiation. Nonetheless, mice present a rather different timing compared with gerbils or hamsters.https://royalsocietypublishing.org/doi/10.1098/rsos.220352geometric morphometricsmandible shapeontogenyrodent |
| spellingShingle | Morgane Dubied Sophie Montuire Nicolas Navarro Functional constraints channel mandible shape ontogenies in rodents Royal Society Open Science geometric morphometrics mandible shape ontogeny rodent |
| title | Functional constraints channel mandible shape ontogenies in rodents |
| title_full | Functional constraints channel mandible shape ontogenies in rodents |
| title_fullStr | Functional constraints channel mandible shape ontogenies in rodents |
| title_full_unstemmed | Functional constraints channel mandible shape ontogenies in rodents |
| title_short | Functional constraints channel mandible shape ontogenies in rodents |
| title_sort | functional constraints channel mandible shape ontogenies in rodents |
| topic | geometric morphometrics mandible shape ontogeny rodent |
| url | https://royalsocietypublishing.org/doi/10.1098/rsos.220352 |
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