Ontogenetic and static allometry in the human face: Contrasting Khoisan and Inuit
ABSTRACT Objectives Regional differences in modern human facial features are present at birth, and ontogenetic allometry contributes to variation in adults. However, details regarding differential rates of growth and timing among regional groups are lacking. We explore ontogenetic and static allomet...
Published in: | American Journal of Physical Anthropology |
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crwiley:10.1002/ajpa.22759 2024-06-02T08:09:32+00:00 Ontogenetic and static allometry in the human face: Contrasting Khoisan and Inuit Freidline, Sarah E. Gunz, Philipp Hublin, Jean‐Jacques Max-Planck-Gesellschaft National Science Foundation National Science Foundation National Science Foundation Leakey Foundation Marie Curie Actions Sigma Xi Foundation 2015 http://dx.doi.org/10.1002/ajpa.22759 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fajpa.22759 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ajpa.22759 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor American Journal of Physical Anthropology volume 158, issue 1, page 116-131 ISSN 0002-9483 1096-8644 journal-article 2015 crwiley https://doi.org/10.1002/ajpa.22759 2024-05-03T11:01:18Z ABSTRACT Objectives Regional differences in modern human facial features are present at birth, and ontogenetic allometry contributes to variation in adults. However, details regarding differential rates of growth and timing among regional groups are lacking. We explore ontogenetic and static allometry in a cross‐sectional sample spanning Africa, Europe and North America, and evaluate tempo and mode in two regional groups with very different adult facial morphology, the Khoisan and Inuit. Materials and Methods Semilandmark geometric morphometric methods, multivariate statistics and growth simulations were used to quantify and compare patterns of facial growth and development. Results Regional‐specific facial morphology develops early in ontogeny. The Inuit has the most distinct morphology and exhibits heterochronic differences in development compared to other regional groups. Allometric patterns differ during early postnatal development, when significant increases in size are coupled with large amounts of shape changes. All regional groups share a common adult static allometric trajectory, which can be attributed to sexual dimorphism, and the corresponding allometric shape changes resemble developmental patterns during later ontogeny. Discussion The amount and pattern of growth and development may not be shared between regional groups, indicating that a certain degree of flexibility is allowed for in order to achieve adult size. In early postnatal development the face is less constrained compared to other parts of the cranium allowing for greater evolvability. The early development of region‐specific facial features combined with heterochronic differences in timing or rate of growth, reflected in differences in facial size, suggest different patterns of postnatal growth. Am J Phys Anthropol 158:116–131, 2015. © 2015 Wiley Periodicals, Inc. Article in Journal/Newspaper inuit Wiley Online Library American Journal of Physical Anthropology 158 1 116 131 |
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ABSTRACT Objectives Regional differences in modern human facial features are present at birth, and ontogenetic allometry contributes to variation in adults. However, details regarding differential rates of growth and timing among regional groups are lacking. We explore ontogenetic and static allometry in a cross‐sectional sample spanning Africa, Europe and North America, and evaluate tempo and mode in two regional groups with very different adult facial morphology, the Khoisan and Inuit. Materials and Methods Semilandmark geometric morphometric methods, multivariate statistics and growth simulations were used to quantify and compare patterns of facial growth and development. Results Regional‐specific facial morphology develops early in ontogeny. The Inuit has the most distinct morphology and exhibits heterochronic differences in development compared to other regional groups. Allometric patterns differ during early postnatal development, when significant increases in size are coupled with large amounts of shape changes. All regional groups share a common adult static allometric trajectory, which can be attributed to sexual dimorphism, and the corresponding allometric shape changes resemble developmental patterns during later ontogeny. Discussion The amount and pattern of growth and development may not be shared between regional groups, indicating that a certain degree of flexibility is allowed for in order to achieve adult size. In early postnatal development the face is less constrained compared to other parts of the cranium allowing for greater evolvability. The early development of region‐specific facial features combined with heterochronic differences in timing or rate of growth, reflected in differences in facial size, suggest different patterns of postnatal growth. Am J Phys Anthropol 158:116–131, 2015. © 2015 Wiley Periodicals, Inc. |
author2 |
Max-Planck-Gesellschaft National Science Foundation National Science Foundation National Science Foundation Leakey Foundation Marie Curie Actions Sigma Xi Foundation |
format |
Article in Journal/Newspaper |
author |
Freidline, Sarah E. Gunz, Philipp Hublin, Jean‐Jacques |
spellingShingle |
Freidline, Sarah E. Gunz, Philipp Hublin, Jean‐Jacques Ontogenetic and static allometry in the human face: Contrasting Khoisan and Inuit |
author_facet |
Freidline, Sarah E. Gunz, Philipp Hublin, Jean‐Jacques |
author_sort |
Freidline, Sarah E. |
title |
Ontogenetic and static allometry in the human face: Contrasting Khoisan and Inuit |
title_short |
Ontogenetic and static allometry in the human face: Contrasting Khoisan and Inuit |
title_full |
Ontogenetic and static allometry in the human face: Contrasting Khoisan and Inuit |
title_fullStr |
Ontogenetic and static allometry in the human face: Contrasting Khoisan and Inuit |
title_full_unstemmed |
Ontogenetic and static allometry in the human face: Contrasting Khoisan and Inuit |
title_sort |
ontogenetic and static allometry in the human face: contrasting khoisan and inuit |
publisher |
Wiley |
publishDate |
2015 |
url |
http://dx.doi.org/10.1002/ajpa.22759 https://api.wiley.com/onlinelibrary/tdm/v1/articles/10.1002%2Fajpa.22759 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ajpa.22759 |
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inuit |
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inuit |
op_source |
American Journal of Physical Anthropology volume 158, issue 1, page 116-131 ISSN 0002-9483 1096-8644 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ajpa.22759 |
container_title |
American Journal of Physical Anthropology |
container_volume |
158 |
container_issue |
1 |
container_start_page |
116 |
op_container_end_page |
131 |
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1800755275245813760 |