Fiche du document
2022
- handle: 10670/1.zh7an7
- hal: hal-03784704
- doi: 10.1098/rspb.2022.0147
Ce document est lié à :
info:eu-repo/semantics/altIdentifier/doi/10.1098/rspb.2022.0147
info:eu-repo/semantics/OpenAccess
Mots-clés
-bio]/Animal biology/Vertebrate ZoologySujets proches
Domestic dog Canis canis Canis domesticus Canis familiarus domesticus Canis lupus familiaris Dog Canis familiarusCiter ce document
Colline Brassard et al., « Unexpected morphological diversity in ancient dogs compared to modern relatives », HAL-SHS : archéologie, ID : 10.1098/rspb.2022.0147
Métriques
Partage / Export
Résumé
Dogs are among the most variable species today, but little is known about the morphological variability in the early phases of their history. The Neolithic transition to farming may have resulted in an early morphological diversification as a result of changes in the anthropic environment or intentional selection on specific morphologies. Here, we describe the variability and modularity in mandible form by comparing 525 dog mandibles from European archaeological sites ranging from 8100 to 3000 cal. BC to a reference sample of modern dogs, wolves, and dingoes. We use three-dimensional geometric morphometrics to quantify the form of complete and fragmented mandibles. We demonstrate that an important morphological variability already existed before the Bronze Age in Europe, yet the largest, smallest, most brachycephalic or dolichocephalic extant dogs have no equivalent in the archaeological sample, resulting in a lower variation compared to modern relatives. The covariation between the anterior and posterior parts of the mandible is lower in archaeological dogs, suggesting a low degree of intentional human selection in early periods. The mandible of modern and ancient dogs differs in functionally important areas, possibly reflecting differences in diet, competition, or the implication of ancient dogs in hunting or defence.