Evolutionary selection and morphological integration in the vertebral column of modern humans
Dados Bibliográficos
| AUTOR(ES) | |
|---|---|
| AFILIAÇÃO(ÕES) | Departamento de Estratigrafía y Paleontología, Facultad de Ciencia y Tecnología Universidad del País Vasco‐Euskal Herriko Unibertsitatea (UPV/EHU) Leioa Spain, Université de Bordeaux, PACEA UMR 5199 Pessac France |
| ANO | 2020 |
| TIPO | Artigo |
| PERIÓDICO | American Journal of Physical Anthropology |
| ISSN | 0002-9483 |
| E-ISSN | 1096-8644 |
| EDITORA | John Wiley and Sons Inc |
| DOI | 10.1002/ajpa.23950 |
| CITAÇÕES | 6 |
| ADICIONADO EM | 2025-08-18 |
| MD5 |
a1eef9fcd920ca9b9b18d3541e8a9d94
|
Resumo
ObjectivesThe main objective is to quantify integration, modularity, and response to selection in the presacral vertebral column of modern humans.Materials and methodsSeventeen linear variables on each presacral vertebra were collected in 108 modern humans producing a total of ~39,000 measurements. Then, we studied patterns and magnitudes of integration at regional, vertebral, and intra‐vertebral levels. Additionally, we calculated the ability of vertebrae to respond to selection by quantifying differences in evolvability, flexibility, and constraint throughout the spine.ResultsThe results indicate that caudal vertebrae are more evolvable than those located more cranially in the presacral vertebral column, following an increasing pattern of evolvability from the cervical to the lumbar region. Additionally, the atlas and fifth lumbar vertebra show the lowest values of integration, while central thoracic vertebrae display the highest magnitudes of integration.DiscussionThese results could be related to three main factors: body plan organization expressed by the Hox genes, the strong developmental constraints that determine the number of mammalian vertebrae, and, finally, the functional requirements of an adaptation to bipedal locomotion in the human lineage.