Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
An integrative insight into the synsacral canal of fossil and extant Antarctic penguins
Faculty of Biology University of Bialystok Bialystok Poland.
Department of Clinical Science Intervention and Technology at Karolinska Institute Stockholm Sweden.
Swedish Museum of Natural History, Department of Paleobiology.ORCID iD: 0000-0003-2268-5824
2022 (English)In: Integrative Zoology, ISSN 1749-4869, E-ISSN 1749-4877, ISSN 1749-4877, Vol. 18, no 2, p. 237-253Article in journal (Refereed) Published
Abstract [en]

The lumbosacral-canal system in birds most likely operates as a sense organ involved in the control of balanced walking and perching, but our knowledge of it is superficial. Penguins constitute interesting objects for the study of this system due to their upright walking, but only the Humboldt penguin, Spheniscus humboldti, and some incomplete fossil penguin synsacra have been studied in this respect. Here, we give an integrative comparative insight into the synsacral canal of extant Emperor penguin, Aptenodytes forsteri, Adelie penguin, Pygoscelis adeliae, and Eocene giant Anthropornis and/or Palaeeudyptes Antarctic penguins, using computed tomography imaging and associated data-extraction methodologies, complemented by analytical approaches ranging from geometric morphometrics to modularity, curvature, and wavelet analyses. We document that the variability in the number of synsacro-lumbar vertebrae is evolutionarily conserved, and all studied synsacra possess osteological correlates of the lumbosacral-canal system. We also found that Eocene and extant Antarctic penguins were separable on the basis of the main direction of the shape-related (size-independent) variability within said system, and A. forsteri was unique in the entire studied set in terms of the relative cranial shift of this compound structure. Moreover, we suggest that the evolutionary processes, shaping both the terrestrial posture and gait, were responsible, in extant penguins, for the increased simplicity and stability of the synsacral canal cross-sectional periodic patterns, as well as pave the way for the lumbosacral-canal system modularity characterized by reduced atomization/complexity.

Place, publisher, year, edition, pages
John Wiley & Sons, 2022. Vol. 18, no 2, p. 237-253
National Category
Natural Sciences Biological Sciences Zoology
Research subject
The changing Earth; Ecosystems and species history
Identifiers
URN: urn:nbn:se:nrm:diva-5422DOI: 10.1111/1749-4877.12689OAI: oai:DiVA.org:nrm-5422DiVA, id: diva2:1817083
Funder
Carl Tryggers foundation
Note

We thank the Argentinean Antarctic Institute (IAA-DNA) and the Argentinean Air Force for logistical support; and the Swedish Polar Research Secretariat (SPFS) for logistical support.

Available from: 2023-12-05 Created: 2023-12-05 Last updated: 2023-12-06Bibliographically approved

Open Access in DiVA

fulltext(2734 kB)35 downloads
File information
File name FULLTEXT01.pdfFile size 2734 kBChecksum SHA-512
d8a552c2fa779c3392b465e9efbdfe719760328132c2532d756343e1ac3052450c0507c498e780652c677995e168b9222e568c714bf70f46df73d5077de872af
Type fulltextMimetype application/pdf

Other links

Publisher's full text

Search in DiVA

By author/editor
Mörs, Thomas
By organisation
Department of Paleobiology
In the same journal
Integrative Zoology
Natural SciencesBiological SciencesZoology

Search outside of DiVA

GoogleGoogle Scholar
Total: 35 downloads
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 19 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association-8th-edition
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf