Aquatic toxicology

Aquatic toxicology is the study of the effects of manufactured chemicals and other anthropogenic and natural materials and activities on aquatic organisms at various levels of organization, from subcellular through individual organisms to communities and ecosystems. Aquatic toxicology is a multidisciplinary field which integrates toxicology, aquatic ecology and aquatic chemistry.

History

The field of aquatic toxicology was established in the 19th century with the development of the first tests for toxicity in water. The earliest tests were simple and involved the exposure of organisms to a substance in water and observing the effects. Over time, the field has evolved to include more complex methodologies and a wider range of organisms.

Scope

Aquatic toxicology encompasses the study of the impact of chemicals, physical agents, and process changes on aquatic organisms. It includes both direct effects on individual organisms, such as lethality, growth, reproduction and behavior, and indirect effects on populations and communities, such as changes in population size, species diversity and community structure.

Methodology

The methodology in aquatic toxicology involves the use of controlled experiments with selected species of aquatic organisms, followed by statistical analysis of the results. The experiments can be conducted in the laboratory or in the field, and the organisms can be exposed to the toxicants either directly or indirectly.

Applications

Aquatic toxicology has applications in water quality assessment, environmental impact assessment, ecotoxicology, environmental chemistry, environmental monitoring, and risk assessment. It is used to establish water quality criteria and standards, to assess the environmental impact of chemicals and other stressors, and to develop strategies for the prevention and control of water pollution.

Challenges

One of the main challenges in aquatic toxicology is the extrapolation of laboratory results to field conditions. Other challenges include the variability of aquatic ecosystems, the complexity of the interactions between organisms and their environment, and the difficulty of measuring low concentrations of toxicants in water.

See also

• Ecotoxicology
• Environmental toxicology
• Marine toxicology
• Toxicology

Aquatic toxicology Resources
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