Effect of bite force and diet composition on craniofacial diversification of Southern South American human populations.
Effect of bite force and diet composition on craniofacial diversification of Southern South American human populations.
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咬合力和饮食成分对南美洲南部人群颅面多样化的影响。
DOI：
10.1002/ajpa.22560
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发表时间：
2014
影响因子：
2.8
通讯作者：
S. Perez
中科院分区：
文献类型：
--
作者：
L. Menéndez;V. Bernal;P. Novellino;S. Perez
生态因素对形成人类种群之间形态变异的模式很重要。特别是，饮食起着至关重要的作用，颅面的变化，由于营养状况的影响，主要取决于类型和数量的营养消耗骨骼生长和咀嚼力的局部影响。我们研究了这两个方面的饮食和评估其影响形态多样化的人类种群在全新世晚期从南美洲南部。颅骨形态测量为定义面、基底和穹窿的3D坐标。从12个样本中获得了474个成年个体的大小，形式和形状变量。根据龋损和δ（13）C数据推断饮食组成，而咬合力则使用主要颌骨肌肉的特征进行估计。的形态和生态变量的空间结构进行了测量，使用相关图。通过空间回归模型估计了食物组成和咬合力对形态学变化的影响。颅骨的变化和饮食组成显示的地理结构，而没有观察到的咬合力的地理模式。颅骨大小和形状的变化与饮食组成显着相关，表明全身因素对颅骨生长有很强的影响。相反，咬合力并没有显着贡献的模式之间的形态变化的样品进行分析。总的来说，这些结果表明，不能假设饮食组成和硬度之间的关联，并强调了人类群体中形态多样化和饮食之间的复杂关系。
Ecological factors can be important to shape the patterns of morphological variation among human populations. Particularly, diet plays a fundamental role in craniofacial variation due to both the effect of the nutritional status-mostly dependent on the type and amount of nutrients consumed-on skeletal growth and the localized effects of masticatory forces. We examine these two dimensions of diet and evaluate their influence on morphological diversification of human populations from southern South America during the late Holocene. Cranial morphology was measured as 3D coordinates defining the face, base and vault. Size, form, and shape variables were obtained for 474 adult individuals coming from 12 samples. Diet composition was inferred from carious lesions and δ(13) C data, whereas bite forces were estimated using traits of main jaw muscles. The spatial structure of the morphological and ecological variables was measured using correlograms. The influence of diet composition and bite force on morphometric variation was estimated by a spatial regression model. Cranial variation and diet composition display a geographical structure, while no geographical pattern was observed in bite forces. Cranial variation in size and form is significantly associated with diet composition, suggesting a strong effect of systemic factors on cranial growth. Conversely, bite forces do not contribute significantly to the pattern of morphological variation among the samples analyzed. Overall, these results show that an association between diet composition and hardness cannot be assumed, and highlight the complex relationship between morphological diversification and diet in human populations.
遗传和环境对狒狒颅骨形态变化的贡献。
影响因子：
2.8
作者：
Roseman,CharlesC;Willmore,KatherineE;Rogers,Jeffrey;Hildebolt,Charles;Sadler,BrookeE;Richtsmeier,JoanT;Cheverud,JamesM
通讯作者：
Cheverud,JamesM
影响因子：
3.2
作者：
Lieberman, DE;Krovitz, GE;Claire, MS
通讯作者：
Claire, MS