Lizard tricks: overcoming conflicting requirements of speed versus climbing ability by altering biomechanics of the lizard stride

Clemente, Christofer J., Withers, Philip C., Thompson, Graham G. and Lloyd, David (2013) Lizard tricks: overcoming conflicting requirements of speed versus climbing ability by altering biomechanics of the lizard stride. Journal of Experimental Biology, 216 20: 3854-3862. doi:10.1242/jeb.089060

Attached Files (Some files may be inaccessible until you login with your UQ eSpace credentials)
Name Description MIMEType Size Downloads
UQ313066_OA.pdf Full text (open access) application/pdf 484.50KB 0

Author Clemente, Christofer J.
Withers, Philip C.
Thompson, Graham G.
Lloyd, David
Title Lizard tricks: overcoming conflicting requirements of speed versus climbing ability by altering biomechanics of the lizard stride
Journal name Journal of Experimental Biology   Check publisher's open access policy
ISSN 0022-0949
1477-9145
Publication date 2013-10-01
Year available 2013
Sub-type Article (original research)
DOI 10.1242/jeb.089060
Open Access Status File (Publisher version)
Volume 216
Issue 20
Start page 3854
End page 3862
Total pages 9
Place of publication Cambridge, United Kingdom
Publisher The Company of Biologists Ltd.
Language eng
Formatted abstract
Adaptations promoting greater performance in one habitat are thought to reduce performance in others. However, there are many examples of animals in which, despite habitat differences, such predicted differences in performance do not occur. One such example is the relationship between locomotory performance to habitat for varanid lizards. To explain the lack of difference in locomotor performance we examined detailed observations of the kinematics of each lizard's stride. Differences in kinematics were greatest between climbing and non-climbing species. For terrestrial lizards, the kinematics indicated that increased femur adduction, femur rotation and ankle angle all contributed positively to changes in stride length, but they were constrained for climbing species, probably because of biomechanical restrictions on the centre of mass height (to increase stability on vertical surfaces). Despite climbing species having restricted stride length, no differences have been previously reported in sprint speed between climbing and non-climbing varanids. This is best explained by climbing varanids using an alternative speed modulation strategy of varying stride frequency to avoid the potential trade-off of speed versus stability on vertical surfaces. Thus, by measuring the relevant biomechanics for lizard strides, we have shown how kinematic differences among species can mask performance differences typically associated with habitat variation.
Keyword Varanidae
Kinematics
Biomechanics
Performance
Australian Varanid Lizards
Q-Index Code C1
Q-Index Status Confirmed Code
Institutional Status UQ

Document type: Journal Article
Sub-type: Article (original research)
Collections: Official 2014 Collection
School of Biological Sciences Publications
 
Versions
Version Filter Type
Citation counts: TR Web of Science Citation Count  Cited 11 times in Thomson Reuters Web of Science Article | Citations
Scopus Citation Count Cited 13 times in Scopus Article | Citations
Google Scholar Search Google Scholar
Created: Sun, 27 Oct 2013, 10:10:39 EST by System User on behalf of School of Biological Sciences