Growing sabers: Mandibular shape and biomechanical performance trajectories during the ontogeny of Smilodon fatalis

Autores
Chatar, Narimane; Boman, Romain; Fischer, Valentin; Segura Gago, Alda Valentina; Julémont, Clara; Tseng, Z. Jack
Año de publicación
2024
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The evolution of organisms can be studied through the lens of developmental systems, as the timing of development of morphological features is an important aspect to consider when studying a phenotype. Such data can be challenging to obtain in fossil amniotes owing to the scarcity of their fossil record. However, the numerous remains of Rancho La Brea allow a detailed study of the postnatal changes in an extinct sabertoothed felid: Smilodon fatalis. Despite numerous previous studies on the ontogeny of Smilodon, an important question remained open: how did the cubs of Smilodon acquire and process food? By applying 3D geometric morphometrics and finite element analyses to 49 mandibles at various developmental stages (22 of S. fatalis, 23 of Panthera leo, and 4 of early diverging felids), we assess the changes in mandibular shape and performance during growth. Both lions and sabertooths exhibit a shift in mandibular shape, aligning with eruption of the lower carnassial. This marks the end of weaning in lions and suggests a prolonged weaning period in S. fatalis owing to its delayed eruption sequence. We also highlight distinct ontogenetic trajectories, with S. fatalis undergoing more postnatal mandibular shape changes. Finally, although S. fatalis appears more efficient than P. leo at performing an anchor bite, this efficiency is acquired through ontogeny and at a quite late age. The delayed shape change compared with P. leo and the low biting efficiency during the growth in Smilodon could indicate an extended duration of the parental care compared with P. leo.
Fil: Chatar, Narimane. Université de Liège; Bélgica. University of California. Department of Integrative Biology; Estados Unidos
Fil: Boman, Romain. Université de Liège; Bélgica
Fil: Fischer, Valentin. Université de Liège; Bélgica
Fil: Segura Gago, Alda Valentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina
Fil: Julémont, Clara. Université de Liège; Bélgica
Fil: Tseng, Z. Jack. University of California. Department of Integrative Biology; Estados Unidos
Materia
FELIDAE
FINITE ELEMENT ANALYSIS
GEOMETRIC MORPHOMETRIC
MANDIBLE
ONTOGENY
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/244273
Acceder
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network_name_str CONICET Digital (CONICET)
spelling Growing sabers: Mandibular shape and biomechanical performance trajectories during the ontogeny of Smilodon fatalisChatar, NarimaneBoman, RomainFischer, ValentinSegura Gago, Alda ValentinaJulémont, ClaraTseng, Z. JackFELIDAEFINITE ELEMENT ANALYSISGEOMETRIC MORPHOMETRICMANDIBLEONTOGENYhttps://purl.org/becyt/ford/1.6https://purl.org/becyt/ford/1The evolution of organisms can be studied through the lens of developmental systems, as the timing of development of morphological features is an important aspect to consider when studying a phenotype. Such data can be challenging to obtain in fossil amniotes owing to the scarcity of their fossil record. However, the numerous remains of Rancho La Brea allow a detailed study of the postnatal changes in an extinct sabertoothed felid: Smilodon fatalis. Despite numerous previous studies on the ontogeny of Smilodon, an important question remained open: how did the cubs of Smilodon acquire and process food? By applying 3D geometric morphometrics and finite element analyses to 49 mandibles at various developmental stages (22 of S. fatalis, 23 of Panthera leo, and 4 of early diverging felids), we assess the changes in mandibular shape and performance during growth. Both lions and sabertooths exhibit a shift in mandibular shape, aligning with eruption of the lower carnassial. This marks the end of weaning in lions and suggests a prolonged weaning period in S. fatalis owing to its delayed eruption sequence. We also highlight distinct ontogenetic trajectories, with S. fatalis undergoing more postnatal mandibular shape changes. Finally, although S. fatalis appears more efficient than P. leo at performing an anchor bite, this efficiency is acquired through ontogeny and at a quite late age. The delayed shape change compared with P. leo and the low biting efficiency during the growth in Smilodon could indicate an extended duration of the parental care compared with P. leo.Fil: Chatar, Narimane. Université de Liège; Bélgica. University of California. Department of Integrative Biology; Estados UnidosFil: Boman, Romain. Université de Liège; BélgicaFil: Fischer, Valentin. Université de Liège; BélgicaFil: Segura Gago, Alda Valentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; ArgentinaFil: Julémont, Clara. Université de Liège; BélgicaFil: Tseng, Z. Jack. University of California. Department of Integrative Biology; Estados UnidosWiley-liss, div John Wiley & Sons Inc.2024-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/244273Chatar, Narimane; Boman, Romain; Fischer, Valentin; Segura Gago, Alda Valentina; Julémont, Clara; et al.; Growing sabers: Mandibular shape and biomechanical performance trajectories during the ontogeny of Smilodon fatalis; Wiley-liss, div John Wiley & Sons Inc.; Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology; 2024; 5-2024; 1-181932-8486CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://anatomypubs.onlinelibrary.wiley.com/doi/10.1002/ar.25504info:eu-repo/semantics/altIdentifier/doi/10.1002/ar.25504info:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-nd/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-09-03T09:58:27Zoai:ri.conicet.gov.ar:11336/244273instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-09-03 09:58:27.745CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv Growing sabers: Mandibular shape and biomechanical performance trajectories during the ontogeny of Smilodon fatalis
title Growing sabers: Mandibular shape and biomechanical performance trajectories during the ontogeny of Smilodon fatalis
spellingShingle Growing sabers: Mandibular shape and biomechanical performance trajectories during the ontogeny of Smilodon fatalis
Chatar, Narimane
FELIDAE
FINITE ELEMENT ANALYSIS
GEOMETRIC MORPHOMETRIC
MANDIBLE
ONTOGENY
title_short Growing sabers: Mandibular shape and biomechanical performance trajectories during the ontogeny of Smilodon fatalis
title_full Growing sabers: Mandibular shape and biomechanical performance trajectories during the ontogeny of Smilodon fatalis
title_fullStr Growing sabers: Mandibular shape and biomechanical performance trajectories during the ontogeny of Smilodon fatalis
title_full_unstemmed Growing sabers: Mandibular shape and biomechanical performance trajectories during the ontogeny of Smilodon fatalis
title_sort Growing sabers: Mandibular shape and biomechanical performance trajectories during the ontogeny of Smilodon fatalis
dc.creator.none.fl_str_mv Chatar, Narimane
Boman, Romain
Fischer, Valentin
Segura Gago, Alda Valentina
Julémont, Clara
Tseng, Z. Jack
author Chatar, Narimane
author_facet Chatar, Narimane
Boman, Romain
Fischer, Valentin
Segura Gago, Alda Valentina
Julémont, Clara
Tseng, Z. Jack
author_role author
author2 Boman, Romain
Fischer, Valentin
Segura Gago, Alda Valentina
Julémont, Clara
Tseng, Z. Jack
author2_role author
author
author
author
author
dc.subject.none.fl_str_mv FELIDAE
FINITE ELEMENT ANALYSIS
GEOMETRIC MORPHOMETRIC
MANDIBLE
ONTOGENY
topic FELIDAE
FINITE ELEMENT ANALYSIS
GEOMETRIC MORPHOMETRIC
MANDIBLE
ONTOGENY
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.6
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The evolution of organisms can be studied through the lens of developmental systems, as the timing of development of morphological features is an important aspect to consider when studying a phenotype. Such data can be challenging to obtain in fossil amniotes owing to the scarcity of their fossil record. However, the numerous remains of Rancho La Brea allow a detailed study of the postnatal changes in an extinct sabertoothed felid: Smilodon fatalis. Despite numerous previous studies on the ontogeny of Smilodon, an important question remained open: how did the cubs of Smilodon acquire and process food? By applying 3D geometric morphometrics and finite element analyses to 49 mandibles at various developmental stages (22 of S. fatalis, 23 of Panthera leo, and 4 of early diverging felids), we assess the changes in mandibular shape and performance during growth. Both lions and sabertooths exhibit a shift in mandibular shape, aligning with eruption of the lower carnassial. This marks the end of weaning in lions and suggests a prolonged weaning period in S. fatalis owing to its delayed eruption sequence. We also highlight distinct ontogenetic trajectories, with S. fatalis undergoing more postnatal mandibular shape changes. Finally, although S. fatalis appears more efficient than P. leo at performing an anchor bite, this efficiency is acquired through ontogeny and at a quite late age. The delayed shape change compared with P. leo and the low biting efficiency during the growth in Smilodon could indicate an extended duration of the parental care compared with P. leo.
Fil: Chatar, Narimane. Université de Liège; Bélgica. University of California. Department of Integrative Biology; Estados Unidos
Fil: Boman, Romain. Université de Liège; Bélgica
Fil: Fischer, Valentin. Université de Liège; Bélgica
Fil: Segura Gago, Alda Valentina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico - Tucumán. Unidad Ejecutora Lillo; Argentina
Fil: Julémont, Clara. Université de Liège; Bélgica
Fil: Tseng, Z. Jack. University of California. Department of Integrative Biology; Estados Unidos
description The evolution of organisms can be studied through the lens of developmental systems, as the timing of development of morphological features is an important aspect to consider when studying a phenotype. Such data can be challenging to obtain in fossil amniotes owing to the scarcity of their fossil record. However, the numerous remains of Rancho La Brea allow a detailed study of the postnatal changes in an extinct sabertoothed felid: Smilodon fatalis. Despite numerous previous studies on the ontogeny of Smilodon, an important question remained open: how did the cubs of Smilodon acquire and process food? By applying 3D geometric morphometrics and finite element analyses to 49 mandibles at various developmental stages (22 of S. fatalis, 23 of Panthera leo, and 4 of early diverging felids), we assess the changes in mandibular shape and performance during growth. Both lions and sabertooths exhibit a shift in mandibular shape, aligning with eruption of the lower carnassial. This marks the end of weaning in lions and suggests a prolonged weaning period in S. fatalis owing to its delayed eruption sequence. We also highlight distinct ontogenetic trajectories, with S. fatalis undergoing more postnatal mandibular shape changes. Finally, although S. fatalis appears more efficient than P. leo at performing an anchor bite, this efficiency is acquired through ontogeny and at a quite late age. The delayed shape change compared with P. leo and the low biting efficiency during the growth in Smilodon could indicate an extended duration of the parental care compared with P. leo.
publishDate 2024
dc.date.none.fl_str_mv 2024-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/244273
Chatar, Narimane; Boman, Romain; Fischer, Valentin; Segura Gago, Alda Valentina; Julémont, Clara; et al.; Growing sabers: Mandibular shape and biomechanical performance trajectories during the ontogeny of Smilodon fatalis; Wiley-liss, div John Wiley & Sons Inc.; Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology; 2024; 5-2024; 1-18
1932-8486
CONICET Digital
CONICET
url http://hdl.handle.net/11336/244273
identifier_str_mv Chatar, Narimane; Boman, Romain; Fischer, Valentin; Segura Gago, Alda Valentina; Julémont, Clara; et al.; Growing sabers: Mandibular shape and biomechanical performance trajectories during the ontogeny of Smilodon fatalis; Wiley-liss, div John Wiley & Sons Inc.; Anatomical Record-Advances in Integrative Anatomy and Evolutionary Biology; 2024; 5-2024; 1-18
1932-8486
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://anatomypubs.onlinelibrary.wiley.com/doi/10.1002/ar.25504
info:eu-repo/semantics/altIdentifier/doi/10.1002/ar.25504
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-nd/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
dc.publisher.none.fl_str_mv Wiley-liss, div John Wiley & Sons Inc.
publisher.none.fl_str_mv Wiley-liss, div John Wiley & Sons Inc.
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 13.13397

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