Spontaneous mycosis caused by Aureobasidium pullulans is documented in roach in a cyprinid-prevalent water reservoir in Czechia. Gross pathological lesions included pale gills and splenomegaly, as revealed during necropsy examination. Histological examination showed extensive foci with fungal elements in the kidney. The isolated fungus was identified through phenotypic and molecular characterization, including phylogeny. This report represents the first case of A. pullulans infection in fish and cold-blooded vertebrates, to the best of our knowledge.

• Klíčová slova
• Black yeasts, Histopathology, Molecular diagnosis, Nuclear erythrocyte abnormalities, Spontaneous mycosis,
• Publikační typ
• časopisecké články MeSH
• kazuistiky MeSH

A mycotic infection manifesting as abdominal distension with free serous fluid accumulation in the coelomic cavity is documented in farmed rainbow trout. Histological examination using PAS and silver staining revealed the presence of numerous fungal hyphae in the spleen and gastrointestinal wall. The isolated fungus was sterile and identified by using phylogenetic analysis based on four loci as Neopyrenochaeta submersa. This is the first time this fungus has been reported as pathogen.

• Klíčová slova
• Coelomycetous fungi, Histopathology, Molecular diagnosis, Phoma, Pyrenochaeta,
• Publikační typ
• časopisecké články MeSH
• kazuistiky MeSH