Toxicity evaluation is an important parameter in wastewater quality monitoring as it provides the complete response of test organisms to all compounds in wastewater. The water flea Daphnia magna straus is the most commonly used zooplankton in toxicological tests. The objective of this study was to evaluate the acute toxicity of effluents from different units of Isfahan Wastewater Treatment Plan...

Studies on avoidance of contaminants by aquatic organisms verified that such behavior may have crucial ecological implications. Yet, avoidance tests have not been considered in ecological risk assessments. This study aimed at developing a short-term test with Daphnia magna Straus based on avoidance of pulp mill effluents and at comparing its sensitivity to the standard 21 d D. magna reproductio...

We examined how alkaline phosphatase (AP) activity within the bodies and in the materials released by the crustacean Daphnia magna responds to variable algal food phosphorus (P)-content. We found that Daphnia eating P-poor food (C:P approximately 700) had significantly higher AP activity in their bodies on a mass-specific basis compared with individuals eating P-rich food (C:P approximately 100...

In laboratory conditions, the analysis of total toxicity some technogenically disturbed soils Belgorod region was carried out using bioassays: Daphnia magna Straus , green algae Scenedesmus quadricauda (Tiger) and Lepidium sativum L. As a result experiments, degree tested established. The conducted studies confirm high information content when three bioassays for soil toxicity.

In recent years there has been increasing concern regarding the damaging effects of ultraviolet radiation (UVR) on aquatic organisms. Daphnia, a well-studied genus of freshwater zooplankton, employs two mechanisms of deoxyribonucleic acid (DNA) repair that are temperature-dependent: photoenzymatic repair (PER, light-dependent repair), and nucleotide excision repair (NER, light-independent repai...