Phylogeography of Crocidura suaveolens (Mammalia: Soricidae) in Iberia has been shaped by competitive exclusion by C. russula

Luis Biedma, Jacinto Román, Javier Calzada, Guillermo Friis, José A. Godoy

Research output: Contribution to journalArticlepeer-review

Abstract

Despite their potential importance, biological processes such as competitive exclusion (CE) have been largely neglected in phylogeographical studies. Here, we analyse the role of glacial events and CE in the evolutionary history of the lesser white-toothed shrew, Crocidura suaveolens, in Iberia based on cytochrome b sequences. All the Iberian samples grouped together with the rest of western European populations within the previously described clade IV. We identified three distinct evolutionary lineages within this major clade, two of them occurring exclusively in Iberia. Iberian lineage B extends throughout the northwest with a continuous distribution and moderate to high diversity values, whereas Iberian lineage C has a highly patchy distribution and is structured in four sublineages, all having low diversity values. No signs of demographic growth were detected for any of the lineages. The evolutionary history of C. suaveolens in Iberia supports the refugia-within-refugia scenario, but ecological studies in areas of sympatry, molecular and fossil datings, and contrasting patterns in the Italian Peninsula suggest that CE exerted by C. russula since its arrival in Iberia has been the main factor shaping the distribution, phylogeography and population genetics of lineage C.

Original languageEnglish (US)
Pages (from-to)81-95
Number of pages15
JournalBiological Journal of the Linnean Society
Volume123
Issue number1
DOIs
StatePublished - Jan 1 2018

Keywords

  • Competitive exclusion
  • Crocidura suaveolens
  • Cytochrome b
  • Genetic diversity
  • Glacial refugia
  • Phylogeography

ASJC Scopus subject areas

  • Ecology, Evolution, Behavior and Systematics

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