Parasitology Research

, Volume 113, Issue 9, pp 3201–3210 | Cite as

Distribution and genetic structure of Aedes japonicus japonicus populations (Diptera: Culicidae) in Germany

  • Katrin Huber
  • Kathrin Schuldt
  • Martin Rudolf
  • Marco Marklewitz
  • Dina M. Fonseca
  • Christian Kaufmann
  • Yoshio Tsuda
  • Sandra Junglen
  • Andreas Krüger
  • Norbert Becker
  • Egbert Tannich
  • Stefanie C. Becker
Original Paper

Abstract

In recent years, the number of imported cases of arthropod-borne diseases in Europe, such as dengue fever, has increased steadily, as did the emergence and distribution of invasive insect vectors. Consequently, the risk of disease spreading into previously unaffected regions through invasive mosquitoes is also increasing. One example of an invasive mosquito is Aedes japonicus japonicus (A. j. japonicus), which spread from its original habitat in Japan to North America and Europe. This species has been shown to act as a vector for Japanese encephalitis and West Nile viruses. In Europe, A. j. japonicus has been detected in Switzerland, Belgium, Slovenia, and Germany, where it has become a resident species. Here, we describe the recent spread and genetic structure of A. j. japonicus populations in Germany. By monitoring the species in Baden-Württemberg in 2011 and 2012, we observed a considerable enlargement of the infested area from 54 municipalities in 2011 to 124 municipalities in 2012. To elucidate the colonization of Europe by A. j. japonicus, seven microsatellite loci were studied in 106 individuals sampled in Germany and Switzerland in 2012. The same markers were genotyped in 31 North American and 26 Japanese specimens. Population genetic analyses indicated that A. j. japonicus in Baden-Württemberg and North Rhine-Westphalia represented two genetically distinct populations with FST—values of 0.073–0.152, suggesting that they originated from two independent introduction events in the past. These results are of particular interest in light of vectorial variability for the transmission of viruses and other pathogens in Europe.

Keywords

Aedes japonicus japonicus Pathogen Population 

Notes

Acknowledgments

We are grateful to Dr. Jonas Schmidt-Chanasit and Stephanie Jansen for the productive discussions and critical reading of the manuscript. This work was financially supported by the Leibniz Association, grant number SAW-2011-BNI-3, and the German Federal Ministry for Environment, Nature Conservation, Building and Nuclear Safety (BMUB) through the Federal Environment Agency (UBA), grant number FKZ371148404.

Supplementary material

436_2014_4000_MOESM1_ESM.doc (78 kb)
Table S1 (DOC 77 kb)

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Copyright information

© Springer-Verlag Berlin Heidelberg 2014

Authors and Affiliations

  • Katrin Huber
    • 1
    • 3
    • 4
  • Kathrin Schuldt
    • 2
  • Martin Rudolf
    • 1
  • Marco Marklewitz
    • 5
  • Dina M. Fonseca
    • 6
  • Christian Kaufmann
    • 7
  • Yoshio Tsuda
    • 8
  • Sandra Junglen
    • 5
  • Andreas Krüger
    • 9
  • Norbert Becker
    • 3
    • 4
  • Egbert Tannich
    • 1
    • 10
  • Stefanie C. Becker
    • 11
  1. 1.Bernhard Nocht Institute for Tropical MedicineHamburgGermany
  2. 2.Department for Molecular MedicineBernhard Nocht Institute for Tropical MedicineHamburgGermany
  3. 3.German Mosquito Control Association (KABS/GFS)WaldseeGermany
  4. 4.University of HeidelbergHeidelbergGermany
  5. 5.University of Bonn Medical CentreBonnGermany
  6. 6.Rutgers UniversityNew BrunswickUSA
  7. 7.University of ZurichZurichSwitzerland
  8. 8.National Institute of Infectious DiseasesTokyoJapan
  9. 9.Bundeswehr Hospital HamburgHamburgGermany
  10. 10.Hamburg and German Centre for Infection Research, partner site Hamburg-Luebeck-BorstelHamburgGermany
  11. 11.Research Group EntomologyBernhard Nocht Institute for Tropical MedicineHamburgGermany

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