1
40
2
-
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
URL Address
<a href="http://doi.org/10.1111/jzo.12164" target="_blank" rel="noreferrer noopener">http://doi.org/10.1111/jzo.12164</a>
Rights
Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
Pages
161-169
Issue
3
Volume
294
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Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
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Accessing foods can exert multiple distinct, and potentially competing, selective pressures on feeding in common marmoset monkeys
Publisher
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Journal of Zoology
Date
A point or period of time associated with an event in the lifecycle of the resource
2014
2014-11
Subject
The topic of the resource
apparatus; behavior; Callithrix; callithrix-jacchus-jacchus; enamel thickness; evolution; feeding adaptations; food; food choice; Food mechanical properties; food selection; hardness; masticatory; mechanical defenses; morphology; prey size; processing; red deer; resource acquisition; tree gouging; Zoology
Creator
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Thompson C L; Valenca-Montenegro M M; Melo Lcdo; Valle Y B M; Oliveira Mabd; Lucas P W; Vinyard C J
Description
An account of the resource
Animals must overcome the physical properties protecting foods to obtain nutrition. While animals can experience selection for traits that facilitate resource exploitation, specific feeding behaviors may entail multiple, different mechanical challenges with each potentially eliciting distinct selection pressures. Tree gouging by common marmosets (Primates: Callithrix jacchus) provides an illustrative case for studying these distinct mechanical challenges and their correlated behaviors and morphologies. We test the hypothesis that marmosets respond differently to three sequential mechanical stages of bark removal: (1) indentation; (2) crack initiation; (3) crack propagation. By surveying trees gouged by free-ranging marmosets in Pernambuco, Brazil, we found that mechanical variables related to crack initiation (fracture toughness, critical strain energy release rate and elastic modulus) were inversely correlated with measures of gouging intensity, with less mechanically challenging trees being gouged more intensely. Because crack initiation is likely the most mechanically challenging aspect of tree gouging, behavioral preference for less challenging resources likely allows marmosets to reduce costs and potential risks associated with accessing exudates. Variables related to bark indentation (hardness and friction) showed no relationship to the intensity of gouging behavior. Contrary to our prediction, trees with greater mechanical challenges for crack propagation (work to peel) were gouged more intensely. We attribute this pattern of gouging trees requiring greater effort in crack propagation to an inverse correlation between work to peel and fracture toughness in our tree sample. Importantly, marmosets exhibit morphological specializations of the feeding apparatus that facilitate indentation and crack propagation, potentially mitigating the need for behavioral choice. Here we show that extracting a single food resource can exert a series of distinct, potentially competing, selective forces during resource acquisition. This study illustrates how animals combine behaviors and morphological specializations to competently overcome distinct mechanical challenges, emphasizing the need for holistic approaches in understanding feeding adaptations.
Identifier
An unambiguous reference to the resource within a given context
<a href="http://doi.org/10.1111/jzo.12164" target="_blank" rel="noreferrer noopener">10.1111/jzo.12164</a>
Format
The file format, physical medium, or dimensions of the resource
Journal Article
2014
apparatus
Behavior
Callithrix
callithrix-jacchus-jacchus
enamel thickness
Evolution
feeding adaptations
Food
food choice
Food mechanical properties
food selection
hardness
Journal Article
Journal of Zoology
Lucas P W
masticatory
mechanical defenses
Melo Lcdo
morphology
Oliveira Mabd
prey size
processing
red deer
resource acquisition
Thompson C L
tree gouging
Valenca-Montenegro M M
Valle Y B M
Vinyard C J
Zoology
-
Text
A resource consisting primarily of words for reading. Examples include books, letters, dissertations, poems, newspapers, articles, archives of mailing lists. Note that facsimiles or images of texts are still of the genre Text.
URL Address
<a href="http://doi.org/10.1016/j.jhevol.2016.07.001" target="_blank" rel="noreferrer noopener">http://doi.org/10.1016/j.jhevol.2016.07.001</a>
Rights
Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
Pages
27-35
Volume
98
Search for Full-text
Locate full-text within NEOMED Library's e-journal collections
<p>Users with a NEOMED Library login can search for full-text journal articles at the following url: <a href="https://libraryguides.neomed.edu/home">https://libraryguides.neomed.edu/home</a></p>
Dublin Core
The Dublin Core metadata element set is common to all Omeka records, including items, files, and collections. For more information see, http://dublincore.org/documents/dces/.
Title
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Preference and consequences: A preliminary look at whether preference impacts oral processing in non-human primates
Publisher
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Journal of Human Evolution
Date
A point or period of time associated with an event in the lifecycle of the resource
2016
2016-09
Subject
The topic of the resource
Anthropology; bitter taste; cebus-apella; chewing behavior; electromyography; Evolutionary Biology; fallback foods; Feeding; Food mechanical properties; Food preference; hardness; mastication; mechanical properties; model foods; muscle; patterns; texture
Creator
An entity primarily responsible for making the resource
Vinyard C J; Thompson C L; Doherty A; Robl N
Description
An account of the resource
Non-human primates demonstrate food preferences much like humans. We have little insight, however, into how those preferences impact oral processing in primates. To begin describing this relationship, we conducted a preliminary analysis measuring food preference in two tufted capuchins (Cebus apella) and comparing ranked preference to physiological variables during chewing of these foods. Food preference was assessed for each monkey across 12 foods, including monkey biscuits and 11 foods consumed by humans (e.g., various fruits and nuts). Animals chose from randomized pairs of foods to generate a ranked scale across the 12 foods. Contemporaneous with preference testing, electromyographic (EMG) activity was measured for the jaw-closing muscles to assess oral physiology during chewing of these foods. As expected, these capuchins exhibited clear preferences among these 12 foods. Based on their preferences, we identified sets of preferred and non-preferred brittle (i.e., almond versus monkey chow) and ductile (i.e., dates and prunes versus apricots) foods for physiological comparisons that broadly control variation in food mechanical properties (FMPs). As expected, oral physiology varied with FMPs in each animal. Within brittle and ductile groupings, we observed several significant differences in chewing cycle length and relative muscle activation levels that are likely related to food preference. These differences tended to be complex and individual specific. The two capuchins chewed non-preferred apricots significantly faster than preferred dates and prunes. Effect sizes for preference were smaller than those for FMPs, supporting the previous focus on FMPs in primate dietary research. Although preliminary, these results suggest that food preference may influence oral physiology in non-human primates. The prospect that this relationship exists in monkeys raises the possibility that a link between food preference and oral processing in humans may be based on shared tendencies with non-human primates, such as aversion to bitter items or preference for sweet foods. (C) 2016 Elsevier Ltd. All rights reserved.
Identifier
An unambiguous reference to the resource within a given context
<a href="http://doi.org/10.1016/j.jhevol.2016.07.001" target="_blank" rel="noreferrer noopener">10.1016/j.jhevol.2016.07.001</a>
Format
The file format, physical medium, or dimensions of the resource
Journal Article
2016
Anthropology
bitter taste
cebus-apella
chewing behavior
Doherty A
Electromyography
Evolutionary Biology
fallback foods
Feeding
Food mechanical properties
Food preference
hardness
Journal Article
Journal of human evolution
Mastication
mechanical properties
model foods
Muscle
patterns
Robl N
texture
Thompson C L
Vinyard C J