Get access
Advertisement

Population genetics of a successful invader: the marsh frog Rana ridibunda in Britain

Authors

  • Inga Zeisset,

    1. School of Biological Sciences, University of Sussex, Falmer, Brighton BN1 9QG, UK
    Search for more papers by this author
    • *

      Current address: Department of Population Ecology, Zoological Institute, University of Copenhagen, Universitetsparken 15, DK-2100 Copenhagen 0, Denmark.

  • Trevor J. C. Beebee

    Corresponding author
    1. School of Biological Sciences, University of Sussex, Falmer, Brighton BN1 9QG, UK
      Professor T. J. C. Beebee, School of Biological Sciences, University of Sussex, Falmer, Brighton BN1 9QG, UK. Fax: 01273 678433; E-mail: t.j.c.beebee@sussex.ac.uk
    Search for more papers by this author

Professor T. J. C. Beebee, School of Biological Sciences, University of Sussex, Falmer, Brighton BN1 9QG, UK. Fax: 01273 678433; E-mail: t.j.c.beebee@sussex.ac.uk

Abstract

We investigated the genetic outcome of successful invasion by an alien species, the marsh frog Rana ridibunda, in Britain. Twelve adults translocated from Hungary into Kent (Romney) in 1935 resulted rapidly in a large localized population. A further successful translocation in 1973 from Romney to Sussex (Lewes), together with other range extensions, provided an opportunity to test bottleneck effects during colonization events. Romney and Lewes frogs had similar genetic diversities to those in Hungary at 14 random amplified polymorphic DNA marker (RAPD) and five microsatellite loci. The introduced populations were, however, differentiated genetically from each other and from a reference population in Hungary. Fitness assessments (larval growth and survival) revealed no differences between the Lewes and Romney populations. Despite starting with few founders, significant bottleneck effects on R. ridibunda in Britain were therefore undetectable, presumably because population expansions were rapid immediately after the translocations.

Get access to the full text of this article

Ancillary