Ecological and functional correlates of molar shape variation in European populations of Arvicola (Arvicolinae, Rodentia)

P. Piras, F. Marcolini, J. Claude, J. Ventura, T. Kotsakis, J. Cubo

Research output: Contribution to journalArticleResearchpeer-review

16 Citations (Scopus)

Abstract

Lower first molar shape in Arvicola spp. at European level has been studied by means of Geometric Morphometrics. We took into account bioclimatic variables, size, lifestyle and phylogenetic relationships. We used Partial Least Squares and Phylogenetic Independent Contrasts in order to assess which factor affects the most molar shape morphology.Once the phylogenetic history was taken into account, climate resulted the most influencing factor in explaining molar morphology, followed by size. Molar shape is not related to lifestyle. Molar shape and size, even if different among species, are not phylogenetically structured. On the opposite, lifestyle depends on the phylogeny, and size and lifestyle are significantly related even considering phylogenetic relationships. Fossorial forms are significantly smaller than semi-aquatic ones, suggesting that they are less subjected to predator pressure of semi-aquatic species and that the two lifestyles are characterized by different allometric patterns. © 2011 Elsevier GmbH.
Original languageEnglish
Pages (from-to)335-343
JournalZoologischer Anzeiger
Volume251
DOIs
Publication statusPublished - 1 Nov 2012

Keywords

  • Arvicola
  • Bioclimatic variables
  • Comparative methods
  • First lower molar
  • Geometric Morphometrics
  • Shape
  • Size

Fingerprint Dive into the research topics of 'Ecological and functional correlates of molar shape variation in European populations of Arvicola (Arvicolinae, Rodentia)'. Together they form a unique fingerprint.

  • Cite this