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The present paper gives an account of six species of the genus Aphanomyces recorded in Lithuania.
All species are briefly described and illustrated; taxonomical position and ecology of some of them are
discussed. Four species of the genus, A. euteiches, A. helicoides, A. parasiticus and A. stellatus, are
reported for the first time in Lithuania.
Context in source publication
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Citations
... A 96 % match to Aphanomyces stellatus was detected in another sample, meaning that either Aphanomyces stellatus, or a closely related species, was identified. P. monospermum is primarily known as a plant pathogen, also found in river water (Matsiakh et al. 2016), while Aphanomyces sp. are found in soil or water as saprotrophs or parasites of roots, algae, aquatic fungi, insects, crayfish or fish (Markovskaja 2007). Species of both genera were previously found on FAGFELLEVURDERTE ARTIKLER fish eggs in Polish hatcheries (Czeczuga & Woronowicz 1993). ...
Arctic charr (Salvelinus alpinus) eggs in hatcheries
are treated for fungal infections using formalin
before, and hand-picking during the eyed stage.
The relative effectiveness of these two treatments
was evaluated using a factorial design
with the application of weekly hand-picking,
and formalin treatments at 380 ppm for 13
minutes
three times weekly as factors. The
effects
of the treatments on total mortality and
hatching success were compared using a twoway
ANOVA. Both treatments exhibited significant,
positive effects on egg survival. Handpicking
during the eyed stage (+ 0.5 to 2.5 %
survival to hatch) was found to be more effective
than formalin treatments before (+ 0.0004 to
0.8 % survival to hatch). This is likely due to differences
in the timing of administration of the
treatments. The probability of fungal infections
varied with time, and a peak seemed to occur
during hatching.
This work is part of a biodiversity and biosystematic study of zoosporic fungi of Bajaur, the newly merged district of Khyber Pakhtunkhwa Province. A total of 19 isolates were characterized morphologically and except one all were identified up to species level. Ten species belonged to Saprolegniaceae and one species to each of the Olpidiopsidaceae and Blastocladiaceae. Of these, nine taxa, viz. Brevilegnia minutandra, Leptolegnia caudata, Aphanomyces scaber, Saprolegnia australis, Saprolegnia sp., Achlya orion, Calyptralegnia ripariensis Olpidiopsis saprolegniae var. levis and Allomyces arbusculus, appeared to be new records for Pakistan, Dictyuchus monosporus, Saprolegnia ferax and Achlya bisexualis are reported for the first time for this district. Saprolegnia australis is reported for the first time from a wild freshwater fish, namely Paraschistura alepidota. The fungi are described in detail and illustrated. The rDNA ITS region of 15 isolates was amplified and sequenced. The phylogenetic relationship among the genera of the family Saprolegniaceae is discussed.
