First record and DNA barcodes of the invasive blue-coloured spiny-cheek crayfish Faxonius limosus (Rafinesque, 1817) (Decapoda: Cambaridae)
Oglądaj/ Otwórz
Data
2020Autor
Jabłońska, Aleksandra
Maciaszek, Rafał
Bonk, Maciej
Sosnowski, Witold
Metadata
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This contribution presents first record of a blue colour morph of spiny-cheek crayfish, Faxonius
limosus (Rafinesque, 1817). Two unusually coloured individuals were caught in Poland, in two different
locations, separated from each other by approximately 500 km and belonging to different river catchments
(Oder and Vistula), within the range of the species occurrence in Europe. Taxonomic identification of
collected crayfish has been confirmed by the standard DNA barcoding procedure. Although blue coloured
forms of crayfish have been previously described within the Cambaridae family, collected individuals are
the first records of blue colouration within F. limosus. It is recommended to supplement identification keys
with a new colour form of the species, which, while characteristic dark red bands are not clear, may cause
mistakes in recognition of exotic, aquarium as well as native species.
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