Buccal dental microwear texture and catarrhine diets

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Title: Buccal dental microwear texture and catarrhine diets
Authors: Aliaga-Martínez, Andrés | Romero, Alejandro | Galbany, Jordi | Hernández-Aguilar, R. Adriana | Pérez-Pérez, Alejandro
Research Group/s: Grupo de Inmunología, Biología Celular y del Desarrollo
Center, Department or Service: Universidad de Alicante. Departamento de Biotecnología
Keywords: Buccal enamel | Dental ecology | Diet | Microwear texture | Primates
Knowledge Area: Biología Celular
Issue Date: Jul-2017
Publisher: Wiley Periodicals
Citation: American Journal of Physical Anthropology. 2017, 163(3): 462-473. doi:10.1002/ajpa.23219
Abstract: Objectives: Two‐dimensional dental microwear analyses on occlusal and nonocclusal enamel surfaces have been widely applied to reconstruct the feeding behaviors of extant primates and to infer ecological adaptations in fossil hominins. To date, analyses of dental microwear texture, using three‐dimensional, Scale‐Sensitive Fractal Analysis approaches has only been applied to occlusal surfaces. Here, for the first time, we apply this 3D proxy to buccal enamel surfaces of catarrhine primates of known feeding ecologies to assess the utility of nonocclusal microwear texture variables as indicators of dietary habits. Materials and Methods: Buccal microwear texture attributes were collected from high‐resolution second molar casts in a sample of seven extant African catarrhine taxa with differing dietary behaviors. A white‐light confocal microscope with a 100× objective lens was used to record six microwear texture variables that assess complexity, anisotropy, heterogeneity, and textural fill volume. Results: The physical properties and variation in hardness of ingested foods is reflected by significant differences in the microwear variables on buccal enamel surfaces between species, which is in agreement with early reports using 2D microwear signatures of the same samples. Species that consume hard brittle items showed high buccal enamel complexity and low anisotropy values, while folivorous species that consume tough foods revealed high anisotropy and low complexity enamel patterns. Discussion: Buccal microwear texture analysis on enamel surfaces clearly reflects diet‐related variation in nonhuman primates. Our findings indicate that microwear texture attributes on nonworking enamel surfaces provide an alternative procedure for reconstructing dietary behavior when wear facets on occlusal surfaces are lacking.
Sponsor: Ministerio de Economía y Competitividad; Secretaría de Estado de Investigación; Desarrollo e Innovación, Grant/Award number: CGL2011‐22999; Comisión Nacional de Investigación Científica y Tecnológica (CONICYT); Gobierno de Chile.
URI: http://hdl.handle.net/10045/82048
ISSN: 0002-9483 (Print) | 1096-8644 (Online)
DOI: 10.1002/ajpa.23219
Language: eng
Type: info:eu-repo/semantics/article
Rights: © 2017 Wiley Periodicals, Inc.
Peer Review: si
Publisher version: https://doi.org/10.1002/ajpa.23219
Appears in Collections:INV - Grupo de Inmunología - Artículos de Revistas

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