Advanced search
1 file | 11.15 MB Add to list

Habitat use and vestibular system's dimensions in lacertid lizards

(2019) JOURNAL OF ANATOMY. 235(1). p.1-14
Author
Organization
Abstract
The vestibular system is crucial for movement control during locomotion. As the dimensions of the vestibular system determine the fluid dynamics of the endolymph and, as such, the system's function, we investigate the interaction between vestibular system size, head size and microhabitat use in lizards. We grouped 24 lacertid species in three microhabitat types, we acquired three-dimensional models of the bony vestibular systems using micro-computer tomography scanning, and we performed linear and surface measurements. All vestibular measurements scale with a negative allometry with head size, suggesting that smaller heads house disproportionally large ears. As the sensitivity of the vestibular system is positively related to size, a sufficiently large vestibular system in small-headed animals may meet the sensitivity demands during challenged locomotion. We also found that the microhabitat affects the locomotor dynamics: lizards inhabiting open microhabitats run at higher dimensionless speeds. On the other hand, no statistical relationship exists between dimensionless speed and the vestibular system dimensions. Hence, if the vestibular size would differ between microhabitats, this would be a direct effect (i.e. imposed, for instance, by requirements for manoeuvring, balance control, etc.), rather than depending on the lizards' intrinsic running speed. However, we found no effect of the microhabitat on the allometric relationship between head and vestibular system size. The finding that microhabitat is not reflected in the vestibular system size (hence sensitivity) of the lacertids in this study is possibly due to spatial constraints of the skull.
Keywords
allometry, bony labyrinth, inner ear, locomotion, manoeuvrability, size constraint, SEMICIRCULAR CANAL SYSTEM, BONY LABYRINTH, INTRASPECIFIC VARIATION, MULTIMODAL INTEGRATION, JUMPING PERFORMANCE, SELF-MOTION, INNER-EAR, EVOLUTION, MORPHOLOGY, LOCOMOTION

Downloads

  • (...).pdf
    • full text
    • |
    • UGent only
    • |
    • PDF
    • |
    • 11.15 MB

Citation

Please use this url to cite or link to this publication:

MLA
Vasilopoulou‐Kampitsi, Menelia, et al. “Habitat Use and Vestibular System’s Dimensions in Lacertid Lizards.” JOURNAL OF ANATOMY, vol. 235, no. 1, 2019, pp. 1–14.
APA
Vasilopoulou‐Kampitsi, M., Goyens, J., Baeckens, S., Van Damme, R., & Aerts, P. (2019). Habitat use and vestibular system’s dimensions in lacertid lizards. JOURNAL OF ANATOMY, 235(1), 1–14.
Chicago author-date
Vasilopoulou‐Kampitsi, Menelia, Jana Goyens, Simon Baeckens, Raoul Van Damme, and Peter Aerts. 2019. “Habitat Use and Vestibular System’s Dimensions in Lacertid Lizards.” JOURNAL OF ANATOMY 235 (1): 1–14.
Chicago author-date (all authors)
Vasilopoulou‐Kampitsi, Menelia, Jana Goyens, Simon Baeckens, Raoul Van Damme, and Peter Aerts. 2019. “Habitat Use and Vestibular System’s Dimensions in Lacertid Lizards.” JOURNAL OF ANATOMY 235 (1): 1–14.
Vancouver
1.
Vasilopoulou‐Kampitsi M, Goyens J, Baeckens S, Van Damme R, Aerts P. Habitat use and vestibular system’s dimensions in lacertid lizards. JOURNAL OF ANATOMY. 2019;235(1):1–14.
IEEE
[1]
M. Vasilopoulou‐Kampitsi, J. Goyens, S. Baeckens, R. Van Damme, and P. Aerts, “Habitat use and vestibular system’s dimensions in lacertid lizards,” JOURNAL OF ANATOMY, vol. 235, no. 1, pp. 1–14, 2019.
@article{8649669,
  abstract     = {The vestibular system is crucial for movement control during locomotion. As the dimensions of the vestibular system determine the fluid dynamics of the endolymph and, as such, the system's function, we investigate the interaction between vestibular system size, head size and microhabitat use in lizards. We grouped 24 lacertid species in three microhabitat types, we acquired three-dimensional models of the bony vestibular systems using micro-computer tomography scanning, and we performed linear and surface measurements. All vestibular measurements scale with a negative allometry with head size, suggesting that smaller heads house disproportionally large ears. As the sensitivity of the vestibular system is positively related to size, a sufficiently large vestibular system in small-headed animals may meet the sensitivity demands during challenged locomotion. We also found that the microhabitat affects the locomotor dynamics: lizards inhabiting open microhabitats run at higher dimensionless speeds. On the other hand, no statistical relationship exists between dimensionless speed and the vestibular system dimensions. Hence, if the vestibular size would differ between microhabitats, this would be a direct effect (i.e. imposed, for instance, by requirements for manoeuvring, balance control, etc.), rather than depending on the lizards' intrinsic running speed. However, we found no effect of the microhabitat on the allometric relationship between head and vestibular system size. The finding that microhabitat is not reflected in the vestibular system size (hence sensitivity) of the lacertids in this study is possibly due to spatial constraints of the skull.},
  author       = {Vasilopoulou‐Kampitsi, Menelia and Goyens, Jana and Baeckens, Simon and Van Damme, Raoul and Aerts, Peter},
  issn         = {0021-8782},
  journal      = {JOURNAL OF ANATOMY},
  keywords     = {allometry,bony labyrinth,inner ear,locomotion,manoeuvrability,size constraint,SEMICIRCULAR CANAL SYSTEM,BONY LABYRINTH,INTRASPECIFIC VARIATION,MULTIMODAL INTEGRATION,JUMPING PERFORMANCE,SELF-MOTION,INNER-EAR,EVOLUTION,MORPHOLOGY,LOCOMOTION},
  language     = {eng},
  number       = {1},
  pages        = {1--14},
  title        = {Habitat use and vestibular system's dimensions in lacertid lizards},
  url          = {http://dx.doi.org/10.1111/joa.12993},
  volume       = {235},
  year         = {2019},
}

Altmetric
View in Altmetric
Web of Science
Times cited: