Show simple item record

dc.contributorRachootin, Stan
dc.contributorShepardson, Dylan
dc.contributor.advisorGillis, Gary
dc.contributor.authorMaynard, Eleanor
dc.date.accessioned2014-06-02T12:58:29Z
dc.date.available2014-06-02T12:58:29Z
dc.date.issued2014-06-02
dc.identifier.urihttp://hdl.handle.net/10166/3471
dc.description.abstractCaudal autotomy is a well-researched predation-escape mechanism used by Anolis lizards. This ‘self-sacrifice’ involves a neuromuscular event in which the tail is severed along an intravertebral fracture plane proximal to the point of a predator’s grip. The phenomenon of autotomy has persisted in anoles for millions of years due to its benefit of increasing the probability of survival. However, autotomy also incurs in the lizard a metabolic deficit, behavioral modifications, and locomotor consequences. Past research has documented post-autotomy changes in sprint speed, step length, and time spent pausing. I hypothesize that these gross locomotor effects can be explained by changes in limb kinematics. Using high-speed video cameras and MATLAB I recorded and compared the characteristic motions of the front and hind legs pre- and post-autotomy in running Anolis carolinensis (N=4), a trunk-crown anole with morphology representative of a broad range of anole ecomorphs. Post-autotomy, the lizards showed significant increases in average velocity, forelimb step frequency, and hindlimb step frequency (p=0.025; p=0.02; p=0.035). Kinematic variables of the limb did not significantly change after tail loss, so the gross locomotor changes observed are better explained as behavioral than biomechanical.en_US
dc.description.sponsorshipBiological Sciencesen_US
dc.language.isoen_USen_US
dc.subjectbiomechanicsen_US
dc.subjectanoleen_US
dc.subjectlocomotionen_US
dc.subjectcaudal autotomyen_US
dc.titleThe Effects of Caudal Autotomy on the Kinematics of Anolis carolinensis Running on an Arboreal-Like Substrateen_US
dc.typeThesis
dc.date.gradyear2014en_US
mhc.institutionMount Holyoke College
mhc.degreeUndergraduateen_US
dc.rights.restrictedpublicen_US


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record