Geometric morphometric investigation of craniofacial morphological change in domesticated silver foxes

Abstract 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...

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Autores principales:	Timothy M. Kistner, Katherine D. Zink, Steven Worthington, Daniel E. Lieberman
Formato:	article
Lenguaje:	EN
Publicado:	Nature Portfolio 2021
Materias:	Medicine R Science Q
Acceso en línea:	https://doaj.org/article/aebee332102545a99d585501a0ccacf8
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spelling	oai:doaj.org-article:aebee332102545a99d585501a0ccacf82021-12-02T14:16:58ZGeometric morphometric investigation of craniofacial morphological change in domesticated silver foxes10.1038/s41598-021-82111-92045-2322https://doaj.org/article/aebee332102545a99d585501a0ccacf82021-01-01T00:00:00Zhttps://doi.org/10.1038/s41598-021-82111-9https://doaj.org/toc/2045-2322Abstract 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.Timothy M. KistnerKatherine D. ZinkSteven WorthingtonDaniel E. LiebermanNature PortfolioarticleMedicineRScienceQENScientific Reports, Vol 11, Iss 1, Pp 1-10 (2021)
institution	DOAJ
collection	DOAJ
language	EN
topic	Medicine R Science Q
spellingShingle	Medicine R Science Q Timothy M. Kistner Katherine D. Zink Steven Worthington Daniel E. Lieberman Geometric morphometric investigation of craniofacial morphological change in domesticated silver foxes
description	Abstract 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.
format	article
author	Timothy M. Kistner Katherine D. Zink Steven Worthington Daniel E. Lieberman
author_facet	Timothy M. Kistner Katherine D. Zink Steven Worthington Daniel E. Lieberman
author_sort	Timothy M. Kistner
title	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_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_sort	geometric morphometric investigation of craniofacial morphological change in domesticated silver foxes
publisher	Nature Portfolio
publishDate	2021
url	https://doaj.org/article/aebee332102545a99d585501a0ccacf8
work_keys_str_mv	AT timothymkistner geometricmorphometricinvestigationofcraniofacialmorphologicalchangeindomesticatedsilverfoxes AT katherinedzink geometricmorphometricinvestigationofcraniofacialmorphologicalchangeindomesticatedsilverfoxes AT stevenworthington geometricmorphometricinvestigationofcraniofacialmorphologicalchangeindomesticatedsilverfoxes AT danielelieberman geometricmorphometricinvestigationofcraniofacialmorphologicalchangeindomesticatedsilverfoxes
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Geometric morphometric investigation of craniofacial morphological change in domesticated silver foxes

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