The ontogeny of nasal shape

An analysis of sexual dimorphism in a longitudinal sample

Datos Bibliográficos

ID8317864
AutoresNathan E Holton (0000-0003-4085-6295, Department of Orthodontics The University of Iowa IA 52242, autor de correspondencia), Ammar Alsamawi (College of Dentistry The University of Iowa IA 52242), Todd R Yokley (Department of Sociology and Anthropology Metropolitan State University of Denver CO 80204), Andrew W Froehle (0000-0002-9561-2389, Department of Community Health Wright State University, Lifespan Health Research Center Dayton OH 45435)
Año2016
Volumen160
Número1
Páginas52-61
Fecha de publicación2016-05-01
Peer ReviewedSí
Open AccessSí
TipoARTICLE
RevistaAmerican Journal of Physical Anthropology (JOURNAL)
Identificadores de la revistaISSN: 0002-9483 • E-ISSN: 1096-8644
EditorialWiley (PUBLISHER • GB)
DOI10.1002/ajpa.22941
PMID26823241
OpenAlexW2409639198
IdiomaEN
Citas recibidas6
Referencias citadas42

OBJECTIVES: Potential integration between the nasal region and noncranial components of the respiratory system has significant implications for understanding determinants of craniofacial variation. There is increasing evidence that sexual dimorphism in body size and associated male-female differences in energetically relevant variables influence the development of the nasal region. To better understand this relationship, we examined the ontogeny of sexual dimorphism in nasal shape using a longitudinal series of lateral cephalograms. METHODS: We collected a series of two dimensional coordinate landmark data from n = 20 males and n = 18 females from 3.0 to 20.0+ years of age totaling n = 290 observations across nine age groups. First, we tested whether there are sex differences in the nasal shape related to ontogenetic increases in body size (i.e., sitting height). Additionally, we examined whether there are male-female differences in patterns of nonallometric variation in nasal shape. Next, we tested whether there are sex differences in the strength of integration between the nasal region and other aspects of the facial skeleton. RESULTS: Our results indicate that there are a number of similarities in patterns of morphological variation in the nasal region between males and females. However, as sitting height increases males exhibit a disproportionate increase in nasal region height that is not present in the female sample. Moreover, the male nasal region is less integrated with the surrounding facial skeleton when compared to the female sample. CONCLUSIONS: These results are consistent with the hypothesis that sex differences in nasal development are associated with male-female differences in energetically relevant variables

Biology · Evolutionary biology · Ontogeny · Physics · Sample (material) · Sexual dimorphism · Zoology · Anatomy · Cleft Lip and Palate Research · Endocrinology · Forensic Anthropology and Bioarchaeology Studies · Nasal Surgery and Airway Studies · Psychology