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Geometric morphometric investigation of craniofacial morphological change in domesticated silver foxes

To test the effects of domestication on craniofacial skeletal morphology, we used three-dimensional geometric morphometrics (GM) along with linear and endocranial measurements to compare selected (domesticated) and unselected foxes from the Russian Farm-Fox Experiment to wild foxes from the progenit...

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Autores principales: Kistner, Timothy M., Zink, Katherine D., Worthington, Steven, Lieberman, Daniel E.
Formato: Online Artículo Texto
Lenguaje:English
Publicado: Nature Publishing Group UK 2021
Materias:
Acceso en línea:https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7843644/
https://www.ncbi.nlm.nih.gov/pubmed/33510282
http://dx.doi.org/10.1038/s41598-021-82111-9
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author Kistner, Timothy M.
Zink, Katherine D.
Worthington, Steven
Lieberman, Daniel E.
author_facet Kistner, Timothy M.
Zink, Katherine D.
Worthington, Steven
Lieberman, Daniel E.
author_sort Kistner, Timothy M.
collection PubMed
description To test the effects of domestication on craniofacial skeletal morphology, we used three-dimensional geometric morphometrics (GM) along with linear and endocranial measurements to compare selected (domesticated) and unselected foxes from the Russian Farm-Fox Experiment to wild foxes from the progenitor population from which the farmed foxes are derived. Contrary to previous findings, we find that domesticated and unselected foxes show minimal differences in craniofacial shape and size compared to the more substantial differences between the wild foxes and both populations of farmed foxes. GM analyses and linear measurements demonstrate that wild foxes differ from farmed foxes largely in terms of less cranial base flexion, relatively expanded cranial vaults, and increased endocranial volumes. These results challenge the assumption that the unselected population of foxes kept as part of the Russian Farm-Fox experiment are an appropriate proxy for ‘wild’ foxes in terms of craniofacial morphology and highlight the need to include wild populations in further studies of domestication syndrome to disentangle the phenotypic effects of multiple selection pressures. These findings also suggest that marked increases in docility cannot be reliably diagnosed from shape differences in craniofacial skeletal morphology.
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spelling pubmed-78436442021-01-29 Geometric morphometric investigation of craniofacial morphological change in domesticated silver foxes Kistner, Timothy M. Zink, Katherine D. Worthington, Steven Lieberman, Daniel E. Sci Rep Article To test the effects of domestication on craniofacial skeletal morphology, we used three-dimensional geometric morphometrics (GM) along with linear and endocranial measurements to compare selected (domesticated) and unselected foxes from the Russian Farm-Fox Experiment to wild foxes from the progenitor population from which the farmed foxes are derived. Contrary to previous findings, we find that domesticated and unselected foxes show minimal differences in craniofacial shape and size compared to the more substantial differences between the wild foxes and both populations of farmed foxes. GM analyses and linear measurements demonstrate that wild foxes differ from farmed foxes largely in terms of less cranial base flexion, relatively expanded cranial vaults, and increased endocranial volumes. These results challenge the assumption that the unselected population of foxes kept as part of the Russian Farm-Fox experiment are an appropriate proxy for ‘wild’ foxes in terms of craniofacial morphology and highlight the need to include wild populations in further studies of domestication syndrome to disentangle the phenotypic effects of multiple selection pressures. These findings also suggest that marked increases in docility cannot be reliably diagnosed from shape differences in craniofacial skeletal morphology. Nature Publishing Group UK 2021-01-28 /pmc/articles/PMC7843644/ /pubmed/33510282 http://dx.doi.org/10.1038/s41598-021-82111-9 Text en © The Author(s) 2021 Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/.
spellingShingle Article
Kistner, Timothy M.
Zink, Katherine D.
Worthington, Steven
Lieberman, Daniel E.
Geometric morphometric investigation of craniofacial morphological change in domesticated silver foxes
title Geometric morphometric investigation of craniofacial morphological change in domesticated silver foxes
title_full Geometric morphometric investigation of craniofacial morphological change in domesticated silver foxes
title_fullStr Geometric morphometric investigation of craniofacial morphological change in domesticated silver foxes
title_full_unstemmed Geometric morphometric investigation of craniofacial morphological change in domesticated silver foxes
title_short Geometric morphometric investigation of craniofacial morphological change in domesticated silver foxes
title_sort geometric morphometric investigation of craniofacial morphological change in domesticated silver foxes
topic Article
url https://www.ncbi.nlm.nih.gov/pmc/articles/PMC7843644/
https://www.ncbi.nlm.nih.gov/pubmed/33510282
http://dx.doi.org/10.1038/s41598-021-82111-9
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