Ecotoxicity Test
Ecotoxicity Test - Related Videos
09:43
Protocol for Acute and Chronic Ecotoxicity Testing of the Turquoise Killifish Nothobranchius furzeri
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Cited by 16 •
2018
In this work, we describe an acute, chronic and multigenerational bioassay to study the effects of single and combined stressors on the Turquoise killifish Nothobranchius furzeri. This protocol is designed to study life-history traits (mortality, growth, fecundity, weight) and critical thermal maximum.
11:26
Ecotoxicological Method with Marine Bacteria Vibrio anguillarum to Evaluate the Acute Toxicity of Environmental Contaminants
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Cited by 10 •
2017
This work describes a new protocol to assess the ecotoxicity of pollutants, including emerging contaminants such as nanomaterials, using the marine bacterium Vibrio anguillarum. This method allows for the determination of the LC50, or mortality, the concentration that causes a 50% decrease in bacteria culturability, after a 6 h exposure.
07:58
Quantifying Fibrillar Collagen Organization with Curvelet Transform-Based Tools
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Cited by 10 •
2020
Here, we present a protocol to use a curvelet transform-based, open-source MATLAB software tool for quantifying fibrillar collagen organization in the extracellular matrix of both normal and diseased tissues. This tool can be applied to images with collagen fibers or other types of line-like structures.
09:30
Microbial Control and Monitoring Strategies for Cleanroom Environments and Cellular Therapies
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Cited by 2 •
2023
The protocol summarizes the best practices to minimize microbial bioburden in a cleanroom environment and includes strategies such as environmental monitoring, process monitoring, and product sterility testing. It is relevant for manufacturing and testing facilities that are required to meet current good tissue practice standards and current good manufacturing practice standards.
11:34
Subsurface Defect Localization by Structured Heating Using Laser Projected Photothermal Thermography
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Cited by 7 •
2017
This method aims at locating vertical subsurface defects. Here, we couple a laser with a spatial light modulator and trigger its video input to heat a sample surface deterministically with two anti-phased modulated lines while acquiring highly resolved thermal images. The defect position is retrieved from evaluating thermal wave interference minima.
FAQs
An increasing exposure concentration can be evaluated against progressively changing biological outcomes to determine whether effects follow a dose-response pattern. That relationship helps distinguish the presence of harm from an isolated observation and supports estimation of environmental risk. It also provides evidence for setting regulatory thresholds, because decision-makers can connect contaminant levels with measured biological consequences.
Different test organisms reveal different dimensions of environmental impact. Algae and plants can show changes in growth, while invertebrates and fish can contribute evidence from other biological responses, including survival, reproduction, behavior, or physiological change. Using representative species and multiple endpoints makes the assessment more informative than relying on a single organism or outcome.
Defined concentrations make it possible to relate the amount of a chemical or pollutant present to the biological response observed. This consistency supports comparisons among organisms, endpoints, or substances and helps show whether changing exposure corresponds to changing effects. The resulting evidence is useful when assessing environmental risk rather than describing biological change without an exposure context.
Laboratory assessments provide exposure to defined concentrations, whereas field assessments examine effects under environmental conditions. Considering both types of evidence can connect controlled observations with impacts occurring in a broader setting. This comparison helps interpret how contaminant exposure may relate to ecosystem health and supports decisions about pollution prevention or environmental management.
After organisms receive defined exposures, investigators record selected endpoints such as survival, growth, reproduction, behavior, or physiological change. They then relate those measurements to exposure concentrations, identify harmful effects, and use the pattern to estimate risk or inform thresholds. This workflow converts observations into evidence that can support environmental decisions.
The results provide biological evidence for deciding whether a chemical or pollutant requires tighter management, whether wastewater treatment is reducing harmful effects, and where pollution prevention should focus. By connecting exposure with responses in representative organisms, testing supports risk-based decisions and helps protect biodiversity and ecosystem health rather than relying only on chemical presence.
Survival alone may not capture the full biological effect of an environmental contaminant or condition. Measurements of growth, reproduction, behavior, and physiological change can reveal effects that may not appear as immediate death. Including these endpoints broadens the assessment of organismal harm and helps connect biological responses with concerns about biodiversity and ecosystem health.