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Diseases of Aquatic Organisms

    DAO prepress abstract   -  DOI: https://doi.org/10.3354/dao03681

    First report of microsporidians in the non-native shrimp Neocaridina davidi from a temperate European stream

    Richard Schneider, Sebastian Prati*, Daniel Grabner, Bernd Sures

    *Corresponding author:

    ABSTRACT: The release of ornamental pets outside their native range might directly, or indirectly impact the recipient community, e.g., via the co-introduction of associated pathogens. However, studies on parasites associated with non-native species, in particular freshwater decapods, have focused mainly on a limited set of pathogens. In the present study, we provide the data for the first time on microsporidian parasites of the non-native ornamental shrimp Neocaridina davidi, collected in a stream in Germany. Furthermore, we confirm an ongoing range expansion of the warm-adapted N. davidi from heated to colder water. In the investigated shrimps, the microsporidian parasite Enterocytozoon hepatopenaei (EHP) and an unknown microsporidian isolate were detected, raising concerns about their transmission potential and pathogenicity on native crustacean species.