Journal
BIOLOGIA
Volume 71, Issue 12, Pages 1380-1385Publisher
SPRINGER
DOI: 10.1515/biolog-2016-0164
Keywords
Procambarus fallax f. virginalis; biological invasion; first record; pet trade; Marmorkrebs; urban pond; post-mining site
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Funding
- project CIGA [20152007]
- Czech Science Foundation [P504/12/2525]
- Ministry of Education, Youth and Sports of the Czech Republic [CZ.1.05/2.1.00/01.0024, LO1205]
- University of South Bohemia [GAJU 158/2016/P]
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The marbled crayfish (Procambarus fallax f. virginalis) has become one of the potentially most dangerous non-indigenous crayfish species spreading in European countries and elsewhere. This taxon reproduces parthenogenetically and recently has been verified as a vector of the crayfish plague pathogen. Here, we report on two established populations of marbled crayfish in the Czech Republic. The marbled crayfish was observed during autumn 2015 in an urban pond connected by sewer piping with the Rokytka brook near its mouth to the Vltava River in Prague. Subsequently, three adult females, two of them having well-developed glair glands and oocytes, were captured in this pond during spring 2016, suggesting successful overwintering of the local population. Furthermore, four adult females were captured in an artificial pond at the Radovesicka lignite spoil heap in the vicinity to the industrial conurbation of Bilina in summer 2016; one of them carried eggs. We tested these for the presence of the crayfish plague pathogen Aphanomyces astaci, with negative results. The introduction pathway for both populations is most likely a release from private aquaria, as these sites are popular for recreation activities. Our findings substantiate previous predictions that conurbations are likely to be the primary areas for marbled crayfish introductions.
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