Urbanozems with typical pollution are formed along railways: heavy metals (HM), oil products, anthropogenic organic matter. Depending on the natural zone and intensity of leaching regime, accumulated can have a different effect integral environmental indicators soils – toxicity enzymatic activity. The aim work was to determine influence railway physicochemical characteristics adjacent urbanozem...

Drinking water quality can be compromised at different stages, from raw to treated one. This research aimed evaluate the toxicity and genotoxicity of groundwater contaminated by fluorinated compounds in a drinking treatment plant, through several bioassays. Water samples underwent chemical analyses were assayed on Daphnia magna, Pseudokirchneriella subcapitata, Allium cepa, human leukocytes Sal...

Daphnia magna belongs to the Cladocera and plays an important role in water ecosystem. With intensification of pollution, wild population D. has declined rapidly recent years, insufficient molecular markers have limited effective research conservation this species. In research, 30 novel single nucleotide polymorphism (SNP) were developed a cultivar 12 using restriction site-associated DNA seque...

Oil sludge (OS) is the toxic product of various oil refinery processes. biophytoremediation sustainable remediation efforts were conducted to reduce OS toxicity level and they also need be monitored through test. In this study, toxicants postbiophytoremediation for 24 months (OS ) 40 ), tested Daphnia magna. The test consisted Range Finding Test, acute chronic purpose research obtain LC50 value...

The presence of sex steroid hormones in aquatic ecosystems is rapidly growing concern worldwide since they can affect the different non-target species including cladocerans. Although data are available on effects estrogens well-established ecotoxicological model organism Daphnia magna, molecular or behavioural alterations induced by environmentally relevant concentrations (from a few ng L?1 to ...

Migration and re-colonization enable organisms to persist in metapopulations. Re-colonization success may be limited by the number of arriving migrants or by patch quality. In a well-studied rock pool Daphnia metapopulation, it is frequently assumed that re-colonization is limited by the number of arriving migrants, and that all patches are equally suitable for colonization. This assumption str...

Divergence of upstream regulatory pathways of the transcription factor Doublesex (Dsx) serves as a basis for evolution of sex-determining mechanisms in animals. However, little is known about the regulation of Dsx in environmental sex determination. In the crustacean Daphnia magna, environmental sex determination is implemented by male-specific expression of the Dsx ortholog, Dsx1. Transcriptio...

1. The growth rate hypothesis predicts positive relationships among growth rate (l), body RNA (%RNA of dry mass) and body P (%P of dry mass) contents. 2. We tested this withinand across-species by growing five species/clones of Daphnia (Daphnia magna, Daphnia pulex, Daphnia galeata and two isolates of Daphnia pulicaria) with different combinations of food quantity and stoichiometric food qualit...

Flubendazole (FLU) and fenbendazole (FEN) belong to benzimidazoles-pharmaceuticals widely used in veterinary and human medicine for the treatment of intestinal parasites as well as for the treatment of systemic worm infections. In recent years, usage of these drugs increased, which resulted in a larger contamination of the environment and possible negative effects on biota. Hence, in our resear...