Ref ID : 2023
Rup Lal and D.M. Saxena; Effect of DDT on Growth of Tetrahymena pyriformis. Arch.Protistenk. 122:382-386, 1979
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Effects of DDT on cell population growth and cell dimensions in a ciliate protozoan, Tetrahymena pyriformis have been investigated. DDT at concentrations of 50 and 100 ppm markedly inhibited cell population growth of the organisms and percentage inhibition ranged from 40-75. These dosages of DDT also affected the cell dimensions viz., major and minor axes, surface area and volume of the ciliates. By fifth day of treatment ciliates became spherical and cytolysed by tenth day of treatment. When organisms, treated with 100 ppm DDT for 3 days, were transferred to normal culture medium, the inhibition of growth was annulled.