Abstract
The marbled crayfish (Procambarus virginalis Lykow (sic), 2017) is added to the list of aquatic invertebrate neozoa in
Austria. The scientifically proven first evidence of marbled crayfish in Austria took place in June 2018 and was
published by Latzer & Pekny (2018). The occurrence of the marbled crayfish is so far known only from two ponds
in Salzburg (Karlsbader Weiher and pond FBZ I/135; Latzer & Pekny, 2018) and one finding in Vienna. According
to Thomas Ofenböck (Municipal Department 45 - Water Management), in August 2018 a single specimen was
found in the 22nd district and released in the Mühlwasser. The Mühlwasser is a former branch of the Danube at
Stadlau (Vienna, 22. District); since 1875, there is no connection to the river anymore. Although the establishment
status of the marble crayfish is unknown, there are two reasons for its inclusion in the list of Austrian aquatic
neozoa. 1) the management of the Salzburg state fishing association (Salzburger Landesfischereiverband) must
assume that the population cannot be eradicated (personal communication Mrs. Daniela Latzer, Salzburg); 2) an
establishment (in the sense of permanent, reproducing populations) is to be assumed since the species
reproduces parthenogenetically.
Keywords: None provided.
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