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  • Evidence for the Pleistocene persistence of Collembola in Great Britain

    Accepted author manuscript, 6 MB, multipart/x-zip

    Embargo ends: 4/06/20

DOI

Aim Using two genera of springtails, Lepidocyrtus and Entomobrya (Collembola), we test for genetic signatures of Pleistocene persistence of soil arthropods in Great Britain. Location Great Britain. Methods A region of the mitochondrial cytochrome oxidase I (COI) gene was sequenced for 1150 Collembola specimens from the genera Lepidocyrtus and Entomobrya across Great Britain. Individuals were clustered into Operational Taxonomic Units (OTUs), and both OTU richness and geographic patterns of genetic variation within OTUs were compared between glaciated and unglaciated areas to identify signatures of OTU persistence through Pleistocene glacial events. Results Our analyses identified 12 Entomobrya and 18 Lepidocyrtus OTUs in Great Britain. Lepidocyrtus OTU richness was significantly lower in glaciated than unglaciated areas, whereas there was no difference for Entomobrya OTU richness. However, both genera presented clear patterns of geographically disjunct genetic variation and geographically localized diversification of OTUs. Estimated dates for the onset of in situ diversification events indicate population persistence that precede pre-dates the last glacial maximum. Main conclusions. Patterns of genetic diversity within Collembola OTUs in Great Britain add to a growing body of evidence that elements of the invertebrate fauna have persisted in situ through Pleistocene glacial cycles. Genetic signatures of population persistence in more northern glaciated areas of Great Britain support a hypothesis of geothermal glacial refugia that call for further investigation with other soil mesofaunal taxa. © 2019, John Wiley & Sons Ltd. The attached document (embargoed until 04/06/2020) is an author produced version of a paper published in JOURNAL OF BIOGEOGRAPHY uploaded in accordance with the publisher’s self- archiving policy. The final published version (version of record) is available online at the link. Some minor differences between this version and the final published version may remain. We suggest you refer to the final published version should you wish to cite from it.
Original languageEnglish
JournalJOURNAL OF BIOGEOGRAPHY
DOIs
StatePublished - 4 Jun 2019

    Research areas

  • Key-words: Collembola, mesofauna, Pleistocene, refugia, soil, western Europe

ID: 1300920