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
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<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/10.1007/s10764-012-9647-7" target="_blank" rel="noreferrer noopener">http://doi.org/10.1007/s10764-012-9647-7</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
65-85
Issue
1
Volume
34
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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Spatial Distribution and Exploitation of Trees Gouged by Common Marmosets (Callithrix jacchus)
Publisher
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International Journal of Primatology
Date
A point or period of time associated with an event in the lifecycle of the resource
2013
2013-02
Subject
The topic of the resource
alouatta-palliata; callitrichids; Exudativory; food resource distribution; GIS; group-size; home-range use; howler monkeys; Intergroup competition; japanese macaques; monkeys erythrocebus-patas; patch size; Renewable; Resource distribution; resources; social-organization; territorial defense; Zoology
Creator
An entity primarily responsible for making the resource
Thompson C L; Robl N J; Melo L C; Valena-Montenegro M M; Valle Y B M; de Oliveira M A B; Vinyard C J
Description
An account of the resource
Resource distribution shapes many aspects of primate behavioral ecology. Though the spatial patterning of fruits, leaves, and insects has been explored among primate foods, comparatively less is known about exudate distributions. Tree exudates are a renewable resource, provide long-term evidence of exploitation, and may be selectively exploited to manipulate spatial distribution. We assessed the spatial patterning of trees gouged by common marmosets (Callithrix jacchus) to determine if they exhibit a uniform, random, or clumped distribution. We also asked whether marmosets selectively gouge trees in home range centers, which may afford them exclusive access to exudates. We explored whether spatial or physical characteristics of trees predict how intensely gouged trees were exploited. The mean nearest neighbor distance of gouged trees was significantly closer than expected for a random distribution and Ripley's K-function showed that gouged trees were clumped across all spatial scales in our study area. Clumping may enable marmosets to reduce day and home ranges and facilitate repeated gouging of trees. Gouged trees were not closer to marmosets' home range centers than peripheries, nor were centrally located trees more intensely gouged. Increased gouging intensity was associated with larger tree circumferences, although this effect was primarily driven by interspecific differences in circumference. Although marmosets may benefit from exploiting clumped exudates, they do not concentrate gouging in areas where they are more likely to gain exclusive access. Species-specific tree characteristics such as exudate quality and/or bark properties may play a larger role in determining gouging patterns than intergroup feeding competition.
Identifier
An unambiguous reference to the resource within a given context
<a href="http://doi.org/10.1007/s10764-012-9647-7" target="_blank" rel="noreferrer noopener">10.1007/s10764-012-9647-7</a>
Format
The file format, physical medium, or dimensions of the resource
Journal Article
2013
alouatta-palliata
callitrichids
de Oliveira M A B
Exudativory
food resource distribution
GIS
group-size
home-range use
howler monkeys
Intergroup competition
international journal of primatology
japanese macaques
Journal Article
Melo L C
monkeys erythrocebus-patas
patch size
Renewable
Resource distribution
resources
Robl N J
social-organization
territorial defense
Thompson C L
Valena-Montenegro M M
Valle Y B M
Vinyard C J
Zoology