Zoosporic aquatic fungi growing on avian excrements in various types of water bodies

AbstractCoprophilic fungi in the water from six different water bodies were studied between 1995–1997. For hydrochemical analysis samples of water were collected every three months while for estimation of fungus content every month. Excrements of 3 phytophagous (greylag goose, roman-nosed goose, mute swan), 4 carnivorous (grey heron, white stork, marsh harrier, cormorant) and 3 omnivorous bird species (musk-duck, mallard, black-headed gull) were used as bait.Thirty-six fungus species growing on avian excrements in the water of all examined water bodies were found, 6 of these species belonged to Chytridiomycetes and 30 to Oomycetes. The largest number of fungus species was detected on excrements of musk duck, mallard and mute swan, the smallest one on excrements of roman-nosed goose, marsh harrier and cormorant. Such fungus species as Achlya americana, Aphanomyces laevis, Dictyuchus monosporus, Pythium debaryanum, Pythium rostratum, Saprolegnia asterophora, Saprolegnia ferax and Saprolegnia parasitica were detected on excrements of all birds examined. Out of these 36 species, 11 are known as parasites or necrotrophs of fish. Rhizophydium ampullaceum and Diasporangium jonesianum are reported for the first time from Poland

Aquatic fungi and fungus-like organisms growing on driffing in water nuts of seven birch species

Aquatic fungi and fungus-like organisms, growing on nuts of seven birch species (Betula gracilis, B. humilis, B. lutea, B. nana, B. papyrifera, B. pubescens and B. verrucosa) found in the water of three limnologically and trophically different water bodies (spring, river and pond), were investigated. The total of 63 species, including 23 fungus-like organisms and 40 fungal species were found on the nuts of the investigated birches. The most common species were Karlingia rosea, Nowakowskiella macrospora, Achlya americana, Aphanomyces laevis, Saprolegnia ferax, Acrodictys bambusicola, Angulospora aquatica, Arbusculina fragmentans, Canalisporium caribense, Heliscus lugdunensis, Pithomyces obscuriseptatus, Tetracladium marchalianum and Tripospermum camelopardus ). Most of the species were observed on the nuts of Betula verrucosa (49 species) and the fewest on the nuts of Betula nana (42). In Cypisek spring, the number of fungal species and fungus-like organisms on the nuts was closely associated with the concentration of chlorides.However, in Supraśl River and Dojlidy pond it was associated with the sulphates concentration (in both cases negative correlation)

GRZYBY I STRAMINIPILE WYSTĘPUJĄCE W KĄPIELISKACH OKOLIC BIAŁEGOSTOKU

Introduction. Fungi and straminipilous organisms play a significant role in aquatic ecosystems as a food source for many invertebrates and in the process of mineralization of organic matter. Research on the occurrence of fungi and straminipila at bathing sites has a major sanitary and epidemiological significance since it allows registration of fungi that can be potentially pathogenic to man.The ai m of the present study was to establish species diversity of fungi and straminipila found in four bathing sites in the vicinity of Białystok, to determine or exclude potential etiological factors of mycotic infections, and to determine the effect of physicochemical parameters of the waters examined on the growth of this group of destruents in the spring and autumn of 2006/2007.Material and methods. The baiting method was used to isolate fungi from water samples collected at the respective bathing sites. Fungi and straminipilous organisms were trapped using amphipod crustacean Gammarus pulex, grass snake skin, onion skin, buckwheat seeds, as well as seeds of clover and cannabis.Results. Forty-two species were identified, with the predominance of saprothrophic fungi, particularly species Aspergillusfumigatus - a potential etiologic agent factor for aspergillosis. Most species were found in the water of the bathing site in Supraśl and Jurowce -26 (RF-63.41%), the fewest in Korycin -16 (RF-39.02%).Conclusion. Species diversity of the fungal and straminipilous organisms at the investigated bathing sites depended on characteristics of a given ecosystem, biotic and abiotic factors.Wstęp. Grzyby i straminipile pełnią znacząca rolę w wodnych ekosystemach, są źródłem pożywienia dla licznych bezkręgowców i mineralizują materię organiczną. Badanie występowania grzybów i straminipili w kąpieliskach ma duże znaczenie w aspekcie sanitarnym i epidemiologicznym, ponieważ umożliwia rejestrowanie grzybów potencjalnie patogenicznych dla człowieka.Celem badań było ustalenie występowania grzybów i straminipili, w tym gatunków potencjalnie chorobotwórczych, w czterech kąpieliskach okolic Białegostoku oraz wpływu na ich rozwój czynników fizykochemicznych wiosną i jesienią w 2006 i w 2007 roku.Materiał i metody. Do izolowania grzybów i straminipili w próbach wody zastosowano metodę przynęt. Pułapkami grzybów był kiełż zdrojowy Gammarus pulex, wylinka skóry węża, łuska okrywowa cebuli, nasiona gryki, także nasiona koniczyny i konopi.Wyniki. Oznaczono łącznie 41 gatunków, dominowały saprotrofy, wśród nich Aspergillus fumigatus potencjalny czynnik etiologiczny aspergiloz.. Największa liczba gatunków wystąpiła w kąpielisku Supraśl i Jurowce - 26 (względna częstotliwość - 63,41%), najmniejsza w kąpielisku Korycin - 16 (względna częstotliwość - 39,02%).Wnioski. Zróżnicowanie gatunkowe grzybów i straminipili badanych kąpielisk warunkują czynniki biotyczne i abiotyczne tych ekosystemów