Polar Biology

, Volume 37, Issue 6, pp 781–787 | Cite as

Natural dispersal to sub-Antarctic Marion Island of two arthropod species

  • Jennifer E. Lee
  • Aleks Terauds
  • Steven L. Chown
Original Paper

Abstract

Distinguishing between species that are recent natural colonists, recent anthropogenic introductions, or previously unknown, but long-term resident native species, is a challenge for those who manage the conservation of the Antarctic region. Here, we report the discovery of two new arthropod species on sub-Antarctic Marion Island—Nabis capsiformis Germar (Heteroptera: Nabidae) and Tetragnatha sp. (Araneomorphae: Tetragnathidae). On the basis of their habitat use, dispersal abilities, historic biodiversity survey records, and limited information on genetic diversity, we conclude that the colonization events were natural.

Keywords

Biological invasions Dispersal DNA barcoding Frontal systems Natural colonization Prince Edward Islands 

Notes

Acknowledgments

A. Dippenaar-Schoeman and R. Stals, and D. H. Jacobs provided taxonomic assistance with the spider and bugs, respectively. J. K. Davis and A. Tshautshau provided assistance in the field. A. Treasure provided assistance with the figures and comments on the MS. Three anonymous reviewers provided helpful comments on the MS. This work was supported by South African National Research Foundation Grant SNA2011110700005.

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Jennifer E. Lee
    • 1
  • Aleks Terauds
    • 1
    • 2
  • Steven L. Chown
    • 3
  1. 1.Department of Botany and Zoology, Centre for Invasion BiologyStellenbosch UniversityMatielandSouth Africa
  2. 2.Australian Antarctic DivisionDepartment of the Environment, Water, Heritage and the ArtsKingstonAustralia
  3. 3.School of Biological SciencesMonash UniversityMelbourneAustralia

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