Publications by authors named "Y Shishkin"
Raphidocystis pallida, a centrohelid heliozoan with unusually shaped tubular siliceous scales, was reisolated from Jamor river, Portugal, and studied with the use of light and electron microscopy. In enriched cultures, the cells were naked, devoid of siliceous external skeleton with the exception of several scales present in one cell. Instead, such cells were covered with a layer of rod-shaped bacteria.
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- The majority of centrohelids are covered by organic spicules or siliceous scales, with some having additional modifications for reinforcement.
- Raphidiophrys heterophryoidea has a unique cyst wall structure featuring a mosaic scale layer, which is not seen in other centrohelids, and its cyst wall fragments during excystment.
- A new species, Raphidiophrys elongata, was described, showing thinner cyst coverings without the mosaic layer, and the study also explored the evolutionary context of these cyst wall variations.
A new family, genus and species of centrohelid heliozoans, gen. nov., sp.
View Article and Find Full Text PDFMeringosphaera is an enigmatic marine protist without clear phylogenetic affiliation, but it has long been suggested to be a chrysophyte-related autotroph. Microscopy-based reports indicate that it has a worldwide distribution, but no sequence data exist so far. We obtained the first 18S rDNA sequence for M.
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