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Title:Ecological Distinctions in Diet, Food Toughness, and Masticatory Anatomy in a Community of Six Neotropical Primates in Guyana, South America
Author(s):Wright, Barth Wilkinson
Doctoral Committee Chair(s):Garber, Paul A.
Department / Program:Anthropology
Degree Granting Institution:University of Illinois at Urbana-Champaign
Subject(s):Biology, Zoology
Abstract:I examine the toughness of plant tissues (N = 14) handled and dentally processed by these primates. General dietary categories (e.g. fruits and leaves) provide only limited insights into the dietary patterns of the study species. However, analyses of opened and masticated plant tissues reveals three dietary patterns. These are described as (1) year round scraping of weak tissues with the anterior dentition and chewing weak tissues with the cheek teeth in A. paniscus, (2) seasonally chewing tissues with high average toughness using the molars, and occasionally opening tough tissues with the incisors and canines in A. seniculus, and (3) seasonally opening tough tissues with the anterior dentition to access weak tissues that are subsequently chewed with the cheek teeth in both Cebus species and both pitheciines. The dietary pattern for each Cebus and pitheciine species is described in detail. It is concluded, that the use of average toughness, maximum toughness, feeding frequency, and seasonal use of plant tissues in constructing dietary profiles offers a comprehensive framework for identifying the suite of ecological variables that impact the craniodental morphology of primates.
Issue Date:2004
Description:249 p.
Thesis (Ph.D.)--University of Illinois at Urbana-Champaign, 2004.
Other Identifier(s):(MiAaPQ)AAI3160975
Date Available in IDEALS:2015-09-25
Date Deposited:2004

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