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Diseases of Aquatic Organisms

    DAO prepress abstract   -  DOI: https://doi.org/10.3354/dao03625

    Association of the alga Cladogonium sp. with a multifactorial disease outbreak in dwarf shrimp (Neocaridina davidi)

    Julia Bauer*, Verena Jung-Schroers, Felix Teitge, Mikolaj Adamek, Dieter Steinhagen

    *Corresponding author:

    ABSTRACT: This communication outlines a multifactorial disease outbreak in in a population of freshwater shrimp with the focus on a rarely described parasitic alga. Within this multifactorial disease outbreak in the fresh water shrimp Neocaridina davidi, a low but consistent mortality was observed. During microscopic examination, an infection of these shrimps with bacterial and fungal-like agents was diagnosed. Furthermore, the green alga Cladogonium sp. was found in pleopodal regions. This green alga was found to compromise the shrimps’ body surface and its rhizoids penetrated the chitin shell and reached into the subcutaneous tissue. This might be a first indication of a parasitic lifestyle. In addition to morphological description, sequencing data is presented which allows the taxonomic classification of the organism within the order Trentepohliales.