By Denise Attaway
Special to Poultry Times
CLEMSON, S.C. — A Clemson University graduate student is learning how environmental toxicants in freshwater systems affect aquatic organisms in the ecosystem, which can be used to determine water quality.
Namrata Sengupta, an environmental toxicology doctoral student, is determining how being exposed to the chemicals atrazine and triclosan affects starvation survival and reproduction of Daphnia magna, or water fleas.
Atrazine is an herbicide commonly used to control broadleaf and grassy weeds in corn, sorghum, sugarcane, pineapple, Christmas trees and other crops, as well as in conifer reforestation plantings. It also is. . .

