In the spring and autumn, the authors investigated of the mycoflora developing on the eggs of seven fresh-water fish species and their environment in five different hatcheries.
The aim of work was settlement of occurrence of pathogenic fungus Trichosporon cutaneum in diverse ecological environments. Object to investigations farmer river Węgorapa, Supraśl, lakes of complex Mamry and Sejny group, of cultivation ponds in Popielewo and in Poryte Jabłoń a few springs of city Białystok. In investigations one used method of baits to isolated water fungus. Quality of waters determined by physico-chemistry methods. One fixed, that pathogcnic fungus Trichosporon cutaneum stepped out in waters north-east evn Poland on all investigated sites. It was developed in both strong poluted water of lakes and ponds also in good oxygened waters and springs it was too.
The community of epiphytes in mesotrophic lake phytoplankton. Fragmenta Floristica et Geobotanica Polonica 10: 267–272. Kraków. PL ISSN 1640 629X. ABSTRACT: Specific epiphyte host relationships were identified in the mesotrophic Lake Pławno, located in the Zielonka primeval forest near Poznań. Three colorless dinoflagellates Pachysoeca convallaria, Lagynion ampullaceum and L. subglobosus (Stylococcaceae) infected the diatom Asterionella formosa, with the fungus Rhizophydium planktonicum epiphytic on the chrysophyte Dinobryon divergens. Although these dinoflagellates are present in eutrophic lakes, they are not common in mesotrophic lakes (e.g. Lake Pławno). However, the environmental conditions that favoured their development occured in this mesotrophic lake and resulted in their infection of A. formosa, which is an ecological niche similar to their association in eutrophic lakes.
Fifty-one species of fungi were found in the oligotrophic Lake Hańcza and some adjacent lakes. The following fungi unknown from Poland were found in these lakes: Micromyces zygogonii, Blastocladia pringsheimii, Lagenidium marchalianum, Calyptralegnia achlyoides, Apodachlya pyrifera, and Tricladium giganteum.
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