Publications by authors named "Tatiana V Poluboyarova"
The Siberian frog Rana amurensis has a uniquely high tolerance to hypoxia among amphibians, as it is able to withstand several months underwater with almost no oxygen (0.2 mg/liter) vs. several days for other studied species.
View Article and Find Full Text PDFAnoxia is a significant challenge for most animals, as it can lead to tissue damage and death. Among amphibians, the Siberian frog is the only known species capable of surviving near-zero levels of oxygen in water for a prolonged period. In this study, we aimed to compare metabolomic profiles of the liver, brain, and heart of the Siberian frog exposed to long-term oxygen deprivation (approximately 0.
View Article and Find Full Text PDFA survey of the earthworm fauna of Belarus that included most of its territory was performed in this study. One genus, three species and one subspecies were reported for the first time. The fauna of Belarus thus comprises 17 species and two subspecies.
View Article and Find Full Text PDFThe moor frog is one of a few amphibians that can tolerate freezing to low temperatures, up to -16 °C. In this study, we performed metabolomic analysis of the liver and hindlimb muscles of frozen and control . We found that the moor frog synthesizes glucose and glycerol in similar concentrations as low molecular weight cryoprotectants.
View Article and Find Full Text PDFThe Siberian salamander Dybowski, 1870 is a unique amphibian that is capable to survive long-term freezing at -55 °C. Nothing is known on the biochemical basis of this remarkable freezing tolerance, except for the fact that it uses glycerol as a low molecular weight cryoprotectant. We used H-NMR analysis to study quantitative changes of multiple metabolites in liver and hindlimb muscle of in response to freezing.
View Article and Find Full Text PDFArticle Synopsis
- - The study focuses on an autochthonous Siberian earthworm species known for its wide distribution across various ecosystems and high levels of diversity, prompting the idea of splitting it into multiple species.
- - Researchers used genetic analysis, including COI gene diversity and transcriptome sequencing, to investigate the species' phylogeny, finding it to be monophyletic but divided into two distinct clades based on geographical distribution.
- - The authors propose to classify the species into two separate species based on these findings, abolishing the current recognition of a non-pigmented subspecies and expanding another to include previously identified lineages.