Facial reconstruction

Search LJMU Research Online

Browse Repository | Browse E-Theses

Mandible size and shape in extant Ursidae (Carnivora, Mammalia): A tool for taxonomy and ecogeography

Meloro, C and Guidarelli, G and Colangelo, P and Ciucci, P and Loy, A (2017) Mandible size and shape in extant Ursidae (Carnivora, Mammalia): A tool for taxonomy and ecogeography. Journal of Zoological Systematics and Evolutionary Research. ISSN 1439-0469

[img] Text
Bear_Meloroetal_Rev3.pdf - Accepted Version
Restricted to Repository staff only until 22 June 2018.

Download (2MB)

Abstract

The family Ursidae is currently one of the taxonomic groups with the lowest number of species among Carnivora. Extant bear species exhibit broad ecological adaptations both at inter- and intraspecific level, and taxonomic issues within this family remain unresolved (i.e., the number of recognizable subspecies). Here, we investigate a sample of bear mandibles using two-dimensional geometric morphometrics to better characterize bear taxonomy and evolution with a focus on one of the most widespread species: the brown bear (Ursus arctos). Our analyses confirm that both size and shape data are useful continuous characters that discriminate with very high percentage of accuracy extant bears. We also identify two very distinct mandibular morphologies in the subspecies Ursus actos isabellinus and Ursus arctos marsicanus. These taxa exhibit a high degree of morphological differentiation possibly as a result of a long process of isolation. Ecogeographical variation occurs among bear mandibles with climate impacting the diversification of the whole family.

Item Type: Article
Additional Information: This is the accepted version of the following article: Meloro C, Guidarelli G, Colangelo P, Ciucci P, Loy A. Mandible size and shape in extant Ursidae (Carnivora, Mammalia): A tool for taxonomy and ecogeography. J Zool Syst Evol Res. 2017;00:1–19. https://doi.org/10.1111/jzs.12171, which has been published in final form at http://dx.doi.org/10.1111/jzs.12171
Uncontrolled Keywords: 0603 Evolutionary Biology, 0608 Zoology
Subjects: Q Science > QH Natural history > QH301 Biology
Q Science > QL Zoology
Divisions: Natural Sciences and Psychology
Publisher: Wiley
Date Deposited: 26 Jun 2017 08:29
Last Modified: 06 Sep 2017 19:44
DOI or Identification number: 10.1111/jzs.12171
URI: http://researchonline.ljmu.ac.uk/id/eprint/6734

Actions (login required)

View Item View Item