Biological magnification

Bioaccumulants Substances that increase in concentration in living organisms as they take in contaminated air, water, or food because the substances are very slowly metabolized or excreted. (See Biological magnification.)... 

Summarizing, diflubenzuron features mentioned in the introduction of this paper can be completed as follows The new insecticide has favourable environmental properties because it is non-persistent in soils and it has a low biological magnification. It is stable on plants and in insects, hence it has a long residual activity. It represents the best choice from the series of the benzoylphenyl ureas. It is a reversible inhibitor of chitin synthesis in insects, probably by blocking chitin synthetase. 

Table 11.3 Biological magnification of insecticides by aquatic animals...

Nakatsugawa, T. and Nelson, P.A., Studies of insecticide detoxication in invertebrates an enzymo-logical approach to the problem of biological magnification, in Environmental toxicology and pesticides, Matsumura, F., Boush, G.M., and Misato, T., Eds., New York Academic Press, 1972, p. 501. 

Johnson BD, Saunders CR, Sanders HO, Campbell RS (1971) Biological magnification and degradation of DDT and aldrin by freshwater invertebrates. J Fish Res Board Can 28 705-709 Jones DP (1985) The role of oxygen concentration in oxidative stress hypoxic and hyperoxic models. 

Many options are available where chemistry contributes to agriculture, and more specifically, to production of field crops. Most notably is the development and use of chemical pesticides for control of harmfiil weeds, insects and diseases. Unfortunately, a few pesticides contribute to adverse enviromnental and human health effects and promote an adverse public view of pesticides in general. DDT is the quintessential exanqrle of a beneficial insecticide, which saved many hiunan lives by killing insects such as mosquitoes, lice and fleas that transmit serious human diseases like malaria, typhus (19), but was also contributed to enviromnental contamination because of the phenomenon known as biological magnification in the food chain. Without delving into a specific... 

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