Aquatic Toxicology
Aquatic Toxicology - Related Videos
08:30
Characterization of Aquatic Biofilms with Flow Cytometry
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Cited by 8 •
2018
Flow cytometry in combination with visual clustering offers an easy-to-use and fast method for studying aquatic biofilms. It can be used for biofilm characterization, detection of changes in biofilm community structure, and detection of abiotic particles embedded in the biofilm.
00:05
In Silico Modeling Method for Computational Aquatic Toxicology of Endocrine Disruptors: A Software-Based Approach Using QSAR Toolbox
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Cited by 13 •
2019
Quantitative structure-activity relationship (QSAR) modeling is a representative bioinformatics-assisted method in toxicological screening. This protocol demonstrates how to computationally assess the risks of endocrine disruptors (EDs) in aquatic environments. Utilizing the OECD QSAR Toolbox, the protocol implements an in silico assay for analyzing toxicity of EDs in fish.
10:48
Nutrients in Aquatic Ecosystems
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2023
Source: Laboratories of Margaret Workman and Kimberly Frye - Depaul University Nitrogen and phosphorus are essential plant nutrients found in aquatic ecosystems and both are monitored as a part of water quality testing because in excess amounts they can cause significant water quality problems. Nitrogen in water is measured as the common form nitrate (NO3-) that is dissolved in water and readily absorbed by photosynthesizers such as algae. The common form of phosphorus measured is phosphate...
10:49
Estimating Virus Production Rates in Aquatic Systems
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Cited by 8 •
2010
The turnover rate of viruses in marine and freshwater systems can be estimated by a reduction and reoccurrence technique. The data allow researchers to infer rates of virus-mediated microbial mortality in aquatic systems.
11:38
High Content Screening Analysis to Evaluate the Toxicological Effects of Harmful and Potentially Harmful Constituents (HPHC)
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Cited by 23 •
2016
The objective of the study was to assess the biological impact of 15 cigarette smoke constituents using a combination of an impedance-based real time cell analyzer and a high-content screening (HCS)-based platform for toxicological assessment in vitro. This study provides information on effective doses, toxicity and modes of action of the tested compounds.
FAQs
Toxic effects depend on more than the measured contaminant concentration. Exposure duration, bioavailability, and species sensitivity influence how much of a substance reaches an organism and how strongly it responds. Consequently, the same contaminant level may be associated with different biological outcomes across organisms or settings, making these variables essential when interpreting aquatic toxicology results.
Exposure through water, sediment, and food represents distinct routes by which contaminants reach aquatic organisms. Considering all three helps researchers evaluate contaminant contact in the surrounding environment as well as through ingestion. This broader exposure assessment supports more meaningful links between measured contaminant levels and effects on growth, reproduction, behavior, or survival.
Biomarker analysis provides biological evidence of contaminant effects, complementing measurements of contaminant concentrations. When paired with laboratory bioassays or field observations, biomarkers can help connect exposure with responses in organisms. This combination strengthens interpretation by examining not only which contaminants are present, but also whether aquatic life shows measurable biological responses.
Laboratory bioassays, field monitoring, and biomarker analysis answer different parts of an assessment. Bioassays help identify toxic effects and relationships between contaminant levels and biological responses, field monitoring examines conditions across aquatic environments, and biomarkers provide organism-level evidence of response. Used together, these approaches support a more complete interpretation than any single evidence source.
A practical assessment may begin by measuring contaminant levels and considering exposure through water, sediment, and food. Researchers can then use laboratory bioassays, field monitoring, and biomarker analysis to examine biological responses. Comparing contaminant concentrations with responses helps identify toxic effects and supports evaluation of ecological risk across freshwater or marine environments.
Results from aquatic toxicology studies support water-quality assessment, pollution control, and ecological risk evaluation. They also inform regulatory decisions by linking contaminant levels with biological responses, including impaired growth, reproduction, behavior, or survival. These applications help guide actions intended to protect aquatic biodiversity and communities that depend on healthy waters.