Abstract
The invasive fish tapeworm, Khawia japonensis (Yamaguti, 1934) originally described in Japan, is reported for the first time in Slovakia. The tapeworm was found in farmed common carp (Cyprinus carpio L.) from East-Slovakian breeding fish pond. This finding is registered 4 years after the first announcement of this parasite in Europe (Po River Basin in Italy) in 2010 and increases its distribution area within this continent. Morphological characterization of K. japonensis supplemented with DNA sequences of cox1 and ribosomal lsrDNA genes is provided. Specimens from Slovakia phenotypically corresponded with those from feral and farmed carps from China, Vietnam, and Italy. Moreover, 100 and 98.7 % identity of partial ribosomal lsrDNA gene and mitochondrial cox1 genes, respectively, were detected with K. japonensis from Japan. The invasive and pathogenic potential of K. japonensis in commercial breeding fisheries and its possible further spread in natural habitats is difficult to estimate for now. As yet, K. japonensis appears to be without a major impact on commercial breeding fisheries, but calls for more attention to the problem of biological invasions.
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Acknowledgments
The authors are grateful to Stanislav Géci and Rudolf Halmi from Slovak Fishing Union for their help in obtaining fish and to Viera Kurimaiová, Institute of Parasitology, SAS, Košice, for the help with fish dissection and line drawings. This study was supported by the Slovak Research and Development Agency (projects nos. APVV 0653-11 and LPP 0171-09) and Grant Agency VEGA (No. 2/0129/12).
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Oros, M., Barčák, D., Bazsalovicsová, E. et al. Asian fish tapeworm, Khawia japonensis (Yamaguti, 1934), has expanded its European invasive range. Parasitol Res 114, 2035–2039 (2015). https://doi.org/10.1007/s00436-015-4447-6
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DOI: https://doi.org/10.1007/s00436-015-4447-6