By the same authors

From the same journal

The changing pace of insular life: 5000 years of microevolution in the orkney vole (microtus arvalis orcadensis)

Research output: Contribution to journalArticle

Published copy (DOI)

Author(s)

  • Thomas Cucchi
  • Ross Barnett
  • Natália Martínková
  • Sabrina Renaud
  • Elodie Renvoisé
  • Allowen Evin
  • Alison Sheridan
  • Ingrid Mainland
  • Caroline Wickham-Jones
  • Christelle Tougard
  • Jean Pierre Quéré
  • Michel Pascal
  • Marine Pascal
  • Gerald Heckel
  • Paul O'Higgins
  • Jeremy B. Searle
  • Keith M. Dobney

Department/unit(s)

Publication details

JournalEvolution: international journal of organic evolution
DateAccepted/In press - 29 Jul 2014
DatePublished (current) - 29 Jul 2014
Issue number10
Volume68
Number of pages17
Pages (from-to)2804-2820
Original languageEnglish

Abstract

Island evolution may be expected to involve fast initial morphological divergence followed by stasis. We tested this model using the dental phenotype of modern and ancient common voles (Microtus arvalis), introduced onto the Orkney archipelago (Scotland) from continental Europe some 5000 years ago. First, we investigated phenotypic divergence of Orkney and continental European populations and assessed climatic influences. Second, phenotypic differentiation among Orkney populations was tested against geography, time, and neutral genetic patterns. Finally, we examined evolutionary change along a time series for the Orkney Mainland. Molar gigantism and anterior-lobe hypertrophy evolved rapidly in Orkney voles following introduction, without any transitional forms detected. Founder events and adaptation appear to explain this initial rapid evolution. Idiosyncrasy in dental features among different island populations of Orkney voles is also likely the result of local founder events following Neolithic translocation around the archipelago. However, against our initial expectations, a second marked phenotypic shift occurred between the 4th and 12th centuries AD, associated with increased pastoral farming and introduction of competitors (mice and rats) and terrestrial predators (foxes and cats). These results indicate that human agency can generate a more complex pattern of morphological evolution than might be expected in island rodents.

    Research areas

  • Dispersal, Evolutionary rate, Geometric morphometrics, Island evolution, Tooth shape, Zooarchaeology

Discover related content

Find related publications, people, projects, datasets and more using interactive charts.

View graph of relations