Different cranial ontogeny in Europeans and Southern Africans

Modern human populations differ in developmental processes and in several phenotypic traits. However, the link between ontogenetic variation and human diversification has not been frequently addressed. Here, we analysed craniofacial ontogenies by means of geometric-morphometrics of Europeans and Sou...

Descripción completa

Guardado en:
Detalles Bibliográficos
Autores principales: Sardi, Marina Laura, Ramirez Rozzi, Fernando V.
Formato: Articulo
Lenguaje:Español
Publicado: 2012
Materias:
Ciencias Naturales
Antropología
Morfogénesis
Europa (Continente)
Sudáfrica
Craneología
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/29439
http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0035917
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-29439
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Español
topic Ciencias Naturales
Antropología
Morfogénesis
Europa (Continente)
Sudáfrica
Craneología
spellingShingle Ciencias Naturales
Antropología
Morfogénesis
Europa (Continente)
Sudáfrica
Craneología
Sardi, Marina Laura
Ramirez Rozzi, Fernando V.
Different cranial ontogeny in Europeans and Southern Africans
topic_facet Ciencias Naturales
Antropología
Morfogénesis
Europa (Continente)
Sudáfrica
Craneología
description Modern human populations differ in developmental processes and in several phenotypic traits. However, the link between ontogenetic variation and human diversification has not been frequently addressed. Here, we analysed craniofacial ontogenies by means of geometric-morphometrics of Europeans and Southern Africans, according to dental and chronological ages. Results suggest that different adult cranial morphologies between Southern Africans and Europeans arise by a combination of processes that involve traits modified during the prenatal life and others that diverge during early postnatal ontogeny. Main craniofacial changes indicate that Europeans differ from Southern Africans by increasing facial developmental rates and extending the attainment of adult size and shape. Since other studies have suggested that native subsaharan populations attain adulthood earlier than Europeans, it is probable that facial ontogeny is linked with other developmental mechanisms that control the timing of maturation in other variables. Southern Africans appear as retaining young features in adulthood. Facial ontogeny in Europeans produces taller and narrower noses, which seems as an adaptation to colder environments. The lack of these morphological traits in Neanderthals, who lived in cold environments, seems a paradox, but it is probably the consequence of a warm-adapted faces together with precocious maturation. When modern Homo sapiens migrated into Asia and Europe, colder environments might establish pressures that constrained facial growth and development in order to depart from the warm-adapted morphology. Our results provide some answers about how cranial growth and development occur in two human populations and when developmental shifts take place providing a better adaptation to environmental constraints.
format Articulo
Articulo
author Sardi, Marina Laura
Ramirez Rozzi, Fernando V.
author_facet Sardi, Marina Laura
Ramirez Rozzi, Fernando V.
author_sort Sardi, Marina Laura
title Different cranial ontogeny in Europeans and Southern Africans
title_short Different cranial ontogeny in Europeans and Southern Africans
title_full Different cranial ontogeny in Europeans and Southern Africans
title_fullStr Different cranial ontogeny in Europeans and Southern Africans
title_full_unstemmed Different cranial ontogeny in Europeans and Southern Africans
title_sort different cranial ontogeny in europeans and southern africans
publishDate 2012
url http://sedici.unlp.edu.ar/handle/10915/29439
http://www.plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0035917
work_keys_str_mv AT sardimarinalaura differentcranialontogenyineuropeansandsouthernafricans
AT ramirezrozzifernandov differentcranialontogenyineuropeansandsouthernafricans
bdutipo_str Repositorios
_version_ 1764820468154499073

Ejemplares similares