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DDT was also used during World War II in order to control malaria by controlling the mosquito population. DDT has an adverse impact on many organisms such as crayfish, fish, shrimp, and other marine animals. The effect of eggshell thinning has the largest impact on birds.
Keeping this in consideration, what species were affected by DDT?
The three species were peregrine falcons, bald eagles, and ospreys. They claimed that the eggshell thinning coincided with the introduction of chlorinated hydrocarbon pesticides like DDT, and concluded that these compounds were harming certain species of birds at the tops of contaminated ecosystems.
Then, what countries use DDT?
DDT is currently being produced in three countries: India, China, and the Democratic People's Republic of Korea (DPRK; North Korea) (Table 1). By far the largest amounts are produced in India for the purpose of disease vector control.
DDT, like other organochlorine pesticides enter the marine environment mainly through inputs from water and air, as a result of their use in agriculture. DDT also affects eggshell production in birds and the endocrine system of most animals. DDT has a very high tenancy towards biomagnification.