1
40
1
-
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.2020.102767" target="_blank" rel="noreferrer noopener">http://doi.org/10.1016/j.jhevol.2020.102767</a>
Pages
102767
Volume
142
ISSN
1095-8606 0047-2484
Search for Full-text
Locate full-text within NEOMED Library's e-journal collections
<a href="http://neomed.idm.oclc.org/login?url=http://doi.org/10.1016/j.jhevol.2020.102767" target="_blank" rel="noreferrer noopener">NEOMED Full-text Holding (if available) - Proxy DOI: 10.1016/j.jhevol.2020.102767</a>
<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>
Update Year & Number
June 2020 Update II
NEOMED College
NEOMED College of Medicine
NEOMED Department
Department of Anatomy & Neurobiology
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
A name given to the resource
Not all fine-branch locomotion is equal: Grasping morphology determines locomotor performance on narrow supports.
Publisher
An entity responsible for making the resource available
Journal of human evolution
Date
A point or period of time associated with an event in the lifecycle of the resource
2020
2020-05
Subject
The topic of the resource
angular-momentum; arboreal locomotion; body-size; Fine-branch niche; Marmosets; minutus rodentia muridae; positional behavior; Primate origins; Primate origins; quadrupedal locomotion; Squirrel monkeys; Squirrel monkeys; Squirrel monkeys; Squirrels; Stability; substrate use; trade-offs
Creator
An entity primarily responsible for making the resource
Young Jesse W; Chadwell Brad A
Description
An account of the resource
Fine-branch models have long played a central role in primate evolutionary research. Nevertheless, recent studies of positional behavior in nonprimate arboreal mammals have challenged the idea that synapomorphic primate features, such as grasping extremities, uniquely facilitated access to the fine-branch zone. We test the alternative hypothesis that grasping extremities specifically improve locomotor performance in a fine-branch environment by examining how support diameter influences locomotor mechanics in one sciurid rodent (Sciurus carolinensis) and two platyrrhine primates (Callithrix jacchus and Saimiri boliviensis). These species were chosen to broadly model different stages in the evolution of primate grasping morphology. The results showed that transitioning from broad to narrower supports required the greatest kinematic adjustment in squirrels and the least adjustment in squirrel monkeys, with marmosets displaying an intermediate level of adjustment. Moreover, on any given support, squirrels' locomotor mechanics differed from marmosets' in a manner consistent with a greater need for stability, despite superficial ecomorphological similarities between sciurid rodents and callitrichine primates. Morphological analyses of autopodial size and proportions suggest that variation in locomotor performance more closely tracked variation in overall hand and foot size rather than digit length per se. Indeed, a broad comparative analysis revealed that for their body mass, primates have longer hands than similarly sized arboreal rodents and marsupials (although only the primate-rodent comparison was significant after incorporating phylogenetic relatedness). Inclusion of fossil stem primates (plesiadapiforms) and euprimates (adapiforms) in these analyses suggests that this primate-wide grade shift in relative autopodial size must have occurred early in the evolutionary history of the group. Overall, our findings show that basal primate morphological adaptations may have specifically facilitated improved locomotor performance in a fine-branch niche, rather than merely permitting access to the environment. As such, future adaptive hypotheses of primate origins should incorporate the import of primate-like morphology on locomotor performance as well.
Identifier
An unambiguous reference to the resource within a given context
<a href="http://doi.org/10.1016/j.jhevol.2020.102767" target="_blank" rel="noreferrer noopener">10.1016/j.jhevol.2020.102767</a>
Rights
Information about rights held in and over the resource
Article information provided for research and reference use only. All rights are retained by the journal listed under publisher and/or the creator(s).
Format
The file format, physical medium, or dimensions of the resource
journalArticle
2020
angular-momentum
arboreal locomotion
body-size
Chadwell Brad A
Department of Anatomy & Neurobiology
Fine-branch niche
Journal of human evolution
journalArticle
June 2020 Update II
marmosets
minutus rodentia muridae
NEOMED College of Medicine
Positional behavior
Primate origins
quadrupedal locomotion
Squirrel monkeys
SQUIRRELS
Stability
substrate use
trade-offs
Young Jesse W