Shape Change and Variation in the Cranial Morphology of Wild Canids (Canis lupus, Canis latrans, Canis rufus) Compared to Domestic Dogs (Canis familiaris) Using Geometric Morphometrics
Wild canid populations exhibit different anatomical morphologies compared to domesticated dogs in North America. This is particularly important concerning archaeological sites, which may contain early domesticated species, for the proper identification of osteological remains. Previous studies have...
Published in: | International Journal of Osteoarchaeology |
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fteasttennesseeu:oai:dc.etsu.edu:etsu-works-17051 2023-07-30T04:02:49+02:00 Shape Change and Variation in the Cranial Morphology of Wild Canids (Canis lupus, Canis latrans, Canis rufus) Compared to Domestic Dogs (Canis familiaris) Using Geometric Morphometrics Schmitt, E. Wallace, S. 2014-01-01T08:00:00Z https://dc.etsu.edu/etsu-works/15785 https://doi.org/10.1002/oa.1306 unknown Digital Commons @ East Tennessee State University https://dc.etsu.edu/etsu-works/15785 doi:10.1002/oa.1306 https://doi.org/10.1002/oa.1306 ETSU Faculty Works coyote domestic dog geometric morphometrics gray wolf landmark analysis red wolf thin plate spline Geosciences text 2014 fteasttennesseeu https://doi.org/10.1002/oa.1306 2023-07-15T18:43:30Z Wild canid populations exhibit different anatomical morphologies compared to domesticated dogs in North America. This is particularly important concerning archaeological sites, which may contain early domesticated species, for the proper identification of osteological remains. Previous studies have indicated domestic dogs exhibit a shorter rostrum accompanied by a crowded tooth row; however, none describe the overall complexity of these changes. Consequently, using a landmark-based geometric morphometric analysis, cranial morphological characteristics were examined in North American wild canids: the gray wolf (Canis lupus), coyote (Canis latrans), red wolf (Canis rufus), and the domestic dog (Canis familiaris). The shape and size of the cranium in lateral and ventral views were compared between the three wild species to the group of domesticated dogs. Wild canids clustered separately from the domestic group in all statistical analyses. Results indicate an expansion of the orbital region, a compression of the rostrum, and an overall warping in the shape and orientation of the skull. In domestic species, there is also a downward shift in the frontal portion of the skull accompanied by the braincase assuming a more upward position. This technique successfully depicted how slight changes in isolated areas of the cranium can have an impact on the overall shape and morphology of the skull. We presume these changes in cranial anatomy reflect the recent selective pressures domestic dogs have undergone since diverging from their wild ancestors. Text Canis lupus gray wolf Digital Commons @ East Tennessee State University International Journal of Osteoarchaeology 24 1 42 50 |
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Open Polar |
collection |
Digital Commons @ East Tennessee State University |
op_collection_id |
fteasttennesseeu |
language |
unknown |
topic |
coyote domestic dog geometric morphometrics gray wolf landmark analysis red wolf thin plate spline Geosciences |
spellingShingle |
coyote domestic dog geometric morphometrics gray wolf landmark analysis red wolf thin plate spline Geosciences Schmitt, E. Wallace, S. Shape Change and Variation in the Cranial Morphology of Wild Canids (Canis lupus, Canis latrans, Canis rufus) Compared to Domestic Dogs (Canis familiaris) Using Geometric Morphometrics |
topic_facet |
coyote domestic dog geometric morphometrics gray wolf landmark analysis red wolf thin plate spline Geosciences |
description |
Wild canid populations exhibit different anatomical morphologies compared to domesticated dogs in North America. This is particularly important concerning archaeological sites, which may contain early domesticated species, for the proper identification of osteological remains. Previous studies have indicated domestic dogs exhibit a shorter rostrum accompanied by a crowded tooth row; however, none describe the overall complexity of these changes. Consequently, using a landmark-based geometric morphometric analysis, cranial morphological characteristics were examined in North American wild canids: the gray wolf (Canis lupus), coyote (Canis latrans), red wolf (Canis rufus), and the domestic dog (Canis familiaris). The shape and size of the cranium in lateral and ventral views were compared between the three wild species to the group of domesticated dogs. Wild canids clustered separately from the domestic group in all statistical analyses. Results indicate an expansion of the orbital region, a compression of the rostrum, and an overall warping in the shape and orientation of the skull. In domestic species, there is also a downward shift in the frontal portion of the skull accompanied by the braincase assuming a more upward position. This technique successfully depicted how slight changes in isolated areas of the cranium can have an impact on the overall shape and morphology of the skull. We presume these changes in cranial anatomy reflect the recent selective pressures domestic dogs have undergone since diverging from their wild ancestors. |
format |
Text |
author |
Schmitt, E. Wallace, S. |
author_facet |
Schmitt, E. Wallace, S. |
author_sort |
Schmitt, E. |
title |
Shape Change and Variation in the Cranial Morphology of Wild Canids (Canis lupus, Canis latrans, Canis rufus) Compared to Domestic Dogs (Canis familiaris) Using Geometric Morphometrics |
title_short |
Shape Change and Variation in the Cranial Morphology of Wild Canids (Canis lupus, Canis latrans, Canis rufus) Compared to Domestic Dogs (Canis familiaris) Using Geometric Morphometrics |
title_full |
Shape Change and Variation in the Cranial Morphology of Wild Canids (Canis lupus, Canis latrans, Canis rufus) Compared to Domestic Dogs (Canis familiaris) Using Geometric Morphometrics |
title_fullStr |
Shape Change and Variation in the Cranial Morphology of Wild Canids (Canis lupus, Canis latrans, Canis rufus) Compared to Domestic Dogs (Canis familiaris) Using Geometric Morphometrics |
title_full_unstemmed |
Shape Change and Variation in the Cranial Morphology of Wild Canids (Canis lupus, Canis latrans, Canis rufus) Compared to Domestic Dogs (Canis familiaris) Using Geometric Morphometrics |
title_sort |
shape change and variation in the cranial morphology of wild canids (canis lupus, canis latrans, canis rufus) compared to domestic dogs (canis familiaris) using geometric morphometrics |
publisher |
Digital Commons @ East Tennessee State University |
publishDate |
2014 |
url |
https://dc.etsu.edu/etsu-works/15785 https://doi.org/10.1002/oa.1306 |
genre |
Canis lupus gray wolf |
genre_facet |
Canis lupus gray wolf |
op_source |
ETSU Faculty Works |
op_relation |
https://dc.etsu.edu/etsu-works/15785 doi:10.1002/oa.1306 https://doi.org/10.1002/oa.1306 |
op_doi |
https://doi.org/10.1002/oa.1306 |
container_title |
International Journal of Osteoarchaeology |
container_volume |
24 |
container_issue |
1 |
container_start_page |
42 |
op_container_end_page |
50 |
_version_ |
1772813650359222272 |