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Regional differences in vertebral shape along the axial skeleton in caecilians (Amphibia: Gymnophiona)

Aurélien Lowie, Barbara De Kegel (UGent) , Mark Wilkinson, John Measey, James C. O'Reilly, Nathan J. Kley, Philippe Gaucher, Jonathan Brecko, Thomas Kleinteich, Anthony Herrel (UGent) , et al.
(2022) JOURNAL OF ANATOMY. 241(3). p.716-728
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Abstract
Caecilians are elongate, limbless and annulated amphibians that, as far as is known, all have an at least partly fossorial lifestyle. It has been suggested that elongate limbless vertebrates show little morphological differentiation throughout the postcranial skeleton. However, relatively few studies have explored the axial skeleton in limbless tetrapods. In this study, we used mu CT data and three-dimensional geometric morphometrics to explore regional differences in vertebral shape across a broad range of caecilian species. Our results highlight substantial differences in vertebral shape along the axial skeleton, with anterior vertebrae being short and bulky, whereas posterior vertebrae are more elongated. This study shows that despite being limbless, elongate tetrapods such as caecilians still show regional heterogeneity in the shape of individual vertebrae along the vertebral column. Further studies are needed, however, to understand the possible causes and functional consequences of the observed variation in vertebral shape in caecilians.
Keywords
Cell Biology, Developmental Biology, Molecular Biology, Ecology, Evolution, Behavior and Systematics, Histology, Anatomy, axial skeleton, geometric morphometrics, intracolumnar variation, postcranial, segmentation, DERMOPHIS-MEXICANUS, LOCOMOTION, EVOLUTION, HISTORY, BODY

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Citation

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MLA
Lowie, Aurélien, et al. “Regional Differences in Vertebral Shape along the Axial Skeleton in Caecilians (Amphibia: Gymnophiona).” JOURNAL OF ANATOMY, vol. 241, no. 3, 2022, pp. 716–28, doi:10.1111/joa.13682.
APA
Lowie, A., De Kegel, B., Wilkinson, M., Measey, J., O’Reilly, J. C., Kley, N. J., … Adriaens, D. (2022). Regional differences in vertebral shape along the axial skeleton in caecilians (Amphibia: Gymnophiona). JOURNAL OF ANATOMY, 241(3), 716–728. https://doi.org/10.1111/joa.13682
Chicago author-date
Lowie, Aurélien, Barbara De Kegel, Mark Wilkinson, John Measey, James C. O’Reilly, Nathan J. Kley, Philippe Gaucher, et al. 2022. “Regional Differences in Vertebral Shape along the Axial Skeleton in Caecilians (Amphibia: Gymnophiona).” JOURNAL OF ANATOMY 241 (3): 716–28. https://doi.org/10.1111/joa.13682.
Chicago author-date (all authors)
Lowie, Aurélien, Barbara De Kegel, Mark Wilkinson, John Measey, James C. O’Reilly, Nathan J. Kley, Philippe Gaucher, Jonathan Brecko, Thomas Kleinteich, Anthony Herrel, and Dominique Adriaens. 2022. “Regional Differences in Vertebral Shape along the Axial Skeleton in Caecilians (Amphibia: Gymnophiona).” JOURNAL OF ANATOMY 241 (3): 716–728. doi:10.1111/joa.13682.
Vancouver
1.
Lowie A, De Kegel B, Wilkinson M, Measey J, O’Reilly JC, Kley NJ, et al. Regional differences in vertebral shape along the axial skeleton in caecilians (Amphibia: Gymnophiona). JOURNAL OF ANATOMY. 2022;241(3):716–28.
IEEE
[1]
A. Lowie et al., “Regional differences in vertebral shape along the axial skeleton in caecilians (Amphibia: Gymnophiona),” JOURNAL OF ANATOMY, vol. 241, no. 3, pp. 716–728, 2022.
@article{01GJMP12J98E0AWY3K928F3AYJ,
  abstract     = {{Caecilians are elongate, limbless and annulated amphibians that, as far as is known, all have an at least partly fossorial lifestyle. It has been suggested that elongate limbless vertebrates show little morphological differentiation throughout the postcranial skeleton. However, relatively few studies have explored the axial skeleton in limbless tetrapods. In this study, we used mu CT data and three-dimensional geometric morphometrics to explore regional differences in vertebral shape across a broad range of caecilian species. Our results highlight substantial differences in vertebral shape along the axial skeleton, with anterior vertebrae being short and bulky, whereas posterior vertebrae are more elongated. This study shows that despite being limbless, elongate tetrapods such as caecilians still show regional heterogeneity in the shape of individual vertebrae along the vertebral column. Further studies are needed, however, to understand the possible causes and functional consequences of the observed variation in vertebral shape in caecilians.}},
  author       = {{Lowie, Aurélien and De Kegel, Barbara and Wilkinson, Mark and Measey, John and O'Reilly, James C. and Kley, Nathan J. and Gaucher, Philippe and Brecko, Jonathan and Kleinteich, Thomas and Herrel, Anthony and Adriaens, Dominique}},
  issn         = {{0021-8782}},
  journal      = {{JOURNAL OF ANATOMY}},
  keywords     = {{Cell Biology,Developmental Biology,Molecular Biology,Ecology, Evolution, Behavior and Systematics,Histology,Anatomy,axial skeleton,geometric morphometrics,intracolumnar variation,postcranial,segmentation,DERMOPHIS-MEXICANUS,LOCOMOTION,EVOLUTION,HISTORY,BODY}},
  language     = {{eng}},
  number       = {{3}},
  pages        = {{716--728}},
  title        = {{Regional differences in vertebral shape along the axial skeleton in caecilians (Amphibia: Gymnophiona)}},
  url          = {{http://doi.org/10.1111/joa.13682}},
  volume       = {{241}},
  year         = {{2022}},
}
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