Ontogenetic variation in human nasal morphology
Abstract Internal nasal cavity morphology has long been thought to reflect respiratory pressures related to heating and humidifying inspired air. Yet, despite the widely recognized importance of ontogeny in understanding climatic and thermoregulatory adaptations, most research on nasal variation in...
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crwiley:10.1002/ar.24760 2024-06-02T08:02:31+00:00 Ontogenetic variation in human nasal morphology Butaric, Lauren N. Nicholas, Christina L. Kravchuk, Katherine Maddux, Scott D. 2021 http://dx.doi.org/10.1002/ar.24760 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ar.24760 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ar.24760 en eng Wiley http://onlinelibrary.wiley.com/termsAndConditions#vor The Anatomical Record volume 305, issue 8, page 1910-1937 ISSN 1932-8486 1932-8494 journal-article 2021 crwiley https://doi.org/10.1002/ar.24760 2024-05-03T11:14:36Z Abstract Internal nasal cavity morphology has long been thought to reflect respiratory pressures related to heating and humidifying inspired air. Yet, despite the widely recognized importance of ontogeny in understanding climatic and thermoregulatory adaptations, most research on nasal variation in modern and fossil humans focuses on static adult morphology. This study utilizes cross‐sectional CT data of three morphologically distinct samples (African, European, Arctic) spanning from infancy to adulthood (total n = 321). Eighteen landmarks capturing external and internal regions of the face and nose were subjected to generalized Procrustes and form‐space principal component analyses (separately conducted on global and individual samples) to ascertain when adult‐specific nasal morphology emerges during ontogeny. Across the global sample, PC1 (67.18% of the variation) tracks age‐related size changes regardless of ancestry, while PC2 (6.86%) differentiates between the ancestral groups irrespective of age. Growth curves tracking morphological changes by age‐in‐years indicate comparable growth trajectories across all three samples, with the majority of nasal size and shape established early in ontogeny (<5 years of age). Sex‐based trends are also evident, with females exhibiting a more truncated growth period than males, particularly for nasal height dimensions. Differences are also evident between the anterior and posterior nose, with the height and breadth dimensions of the anterior nasal aperture and nasal cavity showing differential ontogenetic patterns compared to the choanae. Cumulatively, these results suggest that multiple selective pressures influence human nasal morphology through ontogenetic processes, including metabolic demands for sufficient oxygen intake and climatic demands for adequate intranasal air conditioning. Article in Journal/Newspaper Arctic Wiley Online Library Arctic The Anatomical Record 305 8 1910 1937 |
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Abstract Internal nasal cavity morphology has long been thought to reflect respiratory pressures related to heating and humidifying inspired air. Yet, despite the widely recognized importance of ontogeny in understanding climatic and thermoregulatory adaptations, most research on nasal variation in modern and fossil humans focuses on static adult morphology. This study utilizes cross‐sectional CT data of three morphologically distinct samples (African, European, Arctic) spanning from infancy to adulthood (total n = 321). Eighteen landmarks capturing external and internal regions of the face and nose were subjected to generalized Procrustes and form‐space principal component analyses (separately conducted on global and individual samples) to ascertain when adult‐specific nasal morphology emerges during ontogeny. Across the global sample, PC1 (67.18% of the variation) tracks age‐related size changes regardless of ancestry, while PC2 (6.86%) differentiates between the ancestral groups irrespective of age. Growth curves tracking morphological changes by age‐in‐years indicate comparable growth trajectories across all three samples, with the majority of nasal size and shape established early in ontogeny (<5 years of age). Sex‐based trends are also evident, with females exhibiting a more truncated growth period than males, particularly for nasal height dimensions. Differences are also evident between the anterior and posterior nose, with the height and breadth dimensions of the anterior nasal aperture and nasal cavity showing differential ontogenetic patterns compared to the choanae. Cumulatively, these results suggest that multiple selective pressures influence human nasal morphology through ontogenetic processes, including metabolic demands for sufficient oxygen intake and climatic demands for adequate intranasal air conditioning. |
format |
Article in Journal/Newspaper |
author |
Butaric, Lauren N. Nicholas, Christina L. Kravchuk, Katherine Maddux, Scott D. |
spellingShingle |
Butaric, Lauren N. Nicholas, Christina L. Kravchuk, Katherine Maddux, Scott D. Ontogenetic variation in human nasal morphology |
author_facet |
Butaric, Lauren N. Nicholas, Christina L. Kravchuk, Katherine Maddux, Scott D. |
author_sort |
Butaric, Lauren N. |
title |
Ontogenetic variation in human nasal morphology |
title_short |
Ontogenetic variation in human nasal morphology |
title_full |
Ontogenetic variation in human nasal morphology |
title_fullStr |
Ontogenetic variation in human nasal morphology |
title_full_unstemmed |
Ontogenetic variation in human nasal morphology |
title_sort |
ontogenetic variation in human nasal morphology |
publisher |
Wiley |
publishDate |
2021 |
url |
http://dx.doi.org/10.1002/ar.24760 https://onlinelibrary.wiley.com/doi/pdf/10.1002/ar.24760 https://onlinelibrary.wiley.com/doi/full-xml/10.1002/ar.24760 |
geographic |
Arctic |
geographic_facet |
Arctic |
genre |
Arctic |
genre_facet |
Arctic |
op_source |
The Anatomical Record volume 305, issue 8, page 1910-1937 ISSN 1932-8486 1932-8494 |
op_rights |
http://onlinelibrary.wiley.com/termsAndConditions#vor |
op_doi |
https://doi.org/10.1002/ar.24760 |
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The Anatomical Record |
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305 |
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8 |
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1910 |
op_container_end_page |
1937 |
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1800747002130071552 |