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Eco-geographic adaptations in the human ribcage throughout a 3D geometric morphometric approach.
García-Martínez, Daniel; Nalla, Shahed; Ferreira, Maria Teresa; Guichón, Ricardo A; D'Angelo Del Campo, Manuel D; Bastir, Markus.
Afiliação
  • García-Martínez D; Paleoanthropology Group, Museo Nacional de Ciencias Naturales, Madrid, Spain.
  • Nalla S; Department of Human Anatomy and Physiology, Faculty of Health Sciences, University of Johannesburg, Johannesburg, South Africa.
  • Ferreira MT; Evolutionary Studies Institute (ESI) and Center of Excellence in Palaeosciences, University of the Witwatersrand, Johannesburg, South Africa.
  • Guichón RA; Laboratory of Forensic Anthropology, Centre for Functional Ecology, Department of Life Sciences, University of Coimbra, Coimbra, Portugal.
  • D'Angelo Del Campo MD; Núcleo de Estudios Interdisciplinarios de Poblaciones Humanas de Patagonia Austral, Laboratorio de Ecología Evolutiva Humana, Facultad de Ciencias Sociales, Universidad del Centro de la Provincia de Buenos Aires, Argentina (CONICET).
  • Bastir M; Núcleo de Estudios Interdisciplinarios de Poblaciones Humanas de Patagonia Austral, Laboratorio de Ecología Evolutiva Humana, Facultad de Ciencias Sociales, Universidad del Centro de la Provincia de Buenos Aires, Argentina (CONICET).
Am J Phys Anthropol ; 166(2): 323-336, 2018 06.
Article em En | MEDLINE | ID: mdl-29417988
OBJECTIVES: According to eco-geographic rules, humans from high latitude areas present larger and wider trunks than their low-latitude areas counterparts. This issue has been traditionally addressed on the pelvis but information on the thorax is largely lacking. We test whether ribcages are larger in individuals inhabiting high latitudes than in those from low latitudes and explored the correlation of rib size with latitude. We also test whether a common morphological pattern is exhibited in the thorax of different cold-adapted populations, contributing to their hypothetical widening of the trunk. MATERIALS AND METHODS: We used 3D geometric morphometrics to quantify rib morphology of three hypothetically cold-adapted populations, viz. Greenland (11 individuals), Alaskan Inuit (8 individuals) and people from Tierra del Fuego (8 individuals), in a comparative framework with European (Spain, Portugal and Austria; 24 individuals) and African populations (South African and sub-Saharan African; 20 individuals). RESULTS: Populations inhabiting high latitudes present longer ribs than individuals inhabiting areas closer to the equator, but a correlation (p < 0.05) between costal size and latitude is only found in ribs 7-11. Regarding shape, the only cold adapted population that was different from the non-cold-adapted populations were the Greenland Inuit, who presented ribs with less curvature and torsion. CONCLUSIONS: Size results from the lower ribcage are consistent with the hypothesis of larger trunks in cold-adapted populations. The fact that only Greenland Inuit present a differential morphological pattern, linked to a widening of their ribcage, could be caused by differences in latitude. However, other factors such as genetic drift or specific cultural adaptations cannot be excluded and should be tested in future studies.
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Adaptação Biológica / Antropometria / Temperatura Baixa / Imageamento Tridimensional / Caixa Torácica Limite: Humans País/Região como assunto: America do norte / America do sul / Argentina / Chile / Europa Idioma: En Revista: Am J Phys Anthropol Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Espanha País de publicação: Estados Unidos
Texto completo
Adicionar na Minha BVS
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XML
PubMed Links
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Texto completo: 1 Coleções: 01-internacional Base de dados: MEDLINE Assunto principal: Adaptação Biológica / Antropometria / Temperatura Baixa / Imageamento Tridimensional / Caixa Torácica Limite: Humans País/Região como assunto: America do norte / America do sul / Argentina / Chile / Europa Idioma: En Revista: Am J Phys Anthropol Ano de publicação: 2018 Tipo de documento: Article País de afiliação: Espanha País de publicação: Estados Unidos