Environmental Chemical Susceptibility
Environmental Chemical Susceptibility - Related Videos
07:39
Evaluating the Effect of Environmental Chemicals on Honey Bee Development from the Individual to Colony Level
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Cited by 13 •
2017
Herein we present a method to feed pesticide contaminated food to both an individual honey bee and a beehive colony. The procedure evaluates the pesticide effect on individual honey bees by in vivo feeding of basic larval diet and also on the natural condition of beehive colony.
09:46
Production and Measurement of Organic Particulate Matter in the Harvard Environmental Chamber
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Cited by 4 •
2018
This paper describes operation procedures for the Harvard Environmental Chamber (HEC) and related instrumentation for measuring gaseous and particle species. The environmental chamber is used to produce and study secondary organic species produced from the organic precursors, especially related to atmospheric organic particulate matter.
07:39
A Murine Pancreatic Islet Cell-based Screening for Diabetogenic Environmental Chemicals
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Cited by 11 •
2018
Here we present a protocol to isolate mouse pancreatic islet cells for screening the ROS inductions by the xenobiotics in order to identify the potential diabetogenic xenobiotic chemicals.
09:57
Quantifying Environmental Microorganisms and Viruses Using qPCR
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2023
Source: Laboratories of Dr. Ian Pepper and Dr. Charles Gerba - The University of Arizona Demonstrating Author: Bradley Schmitz Quantitative polymerase chain reaction (qPCR), also known as real-time PCR, is a widely-used molecular technique for enumerating microorganisms in the environment. Prior to this approach, quantifying microorganisms was limited largely to classical culture-based techniques. However, the culturing of microbes from environmental samples can be particularly challenging, and...
10:48
Aseptic Technique in Environmental Science
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2023
Source: Laboratories of Dr. Ian Pepper and Dr. Charles Gerba - The University of Arizona Demonstrating Author: Luisa Ikner Aseptic technique is a fundamental skill widely practiced in the field of environmental microbiology that requires a balance of mindfulness and practice in the laboratory. Proper use of this technique reduces the likelihood of bacterial or fungal contamination of reagents, culture media, and environmental samples. Aseptic technique is also vital to ensure data integrity and...
FAQs
Response can change with both the amount of chemical encountered and the length of exposure. A brief, low-level contact may produce a different outcome from prolonged exposure, even when the chemical and organism remain the same. Evaluating these variables together helps distinguish conditions associated with adverse effects and improves interpretation of biological responses.
Chemical properties influence how a substance behaves after contact, while the route of uptake determines how it enters the organism. Air, water, food, and skin can therefore represent different exposure circumstances. Comparing these routes with the chemical’s properties helps explain variation in internal effects and identifies which environmental pathways require closer attention.
After uptake, an organism may transform a chemical, store it, or eliminate it. These processes affect how long the substance remains available to interact with cellular targets. Differences in handling can therefore change physiological disruption among organisms or life stages, making metabolism and elimination important when interpreting why similar exposures produce different outcomes.
Age, genetic makeup, metabolism, and developmental stage can all influence sensitivity. These traits may alter how an organism encounters, processes, or responds to a chemical. Examining them helps identify vulnerable life stages and populations rather than assuming that one measured response represents every individual, species, or group within an affected environment.
Assessment compares chemical exposure conditions with biological responses across organisms, populations, or ecosystems. Relevant considerations include exposure level and duration, chemical properties, uptake routes, and traits such as age or developmental stage. The resulting comparisons help identify vulnerable groups and support judgments about potential ecological or health risks.
Monitoring can focus on chemicals, exposure pathways, species, or life stages that appear especially vulnerable. Findings help reveal where adverse responses may occur and which biological groups warrant protection. In conservation, this information supports strategies aimed at reducing harmful exposure and protecting populations or ecosystems affected by environmental contamination.