Multigenerational effects of 3, 4-dichloroaniline of Daphnia magna

12^th International Conference on Environmental Toxicology and Ecological Risk Assessment

October 19-20, 2017 | Atlanta, USA

Hyemin Kim, Seong-Dae Moon, Seong Woo Kim, Hyemin Park, Ju Ahn Ahn, Jung-Woon Lee, Kyunghwa Park and Jung-Suk Lee

NeoEnBiz Co., South Korea
National Institute of Environmental Research, South Korea

Posters & Accepted Abstracts: J Environ Anal Toxicol

Abstract :

Most multigenerational studies on acute and chronic toxicity tests are initiated with Daphnia magna (D. magna) derived from unexposed female. However, this approach could ignore potential transfer of toxicity from mother to offspring. Thus, we observed the influence of 3,4-dichloroaniline (3,4-DCA) on two consecutive generation of Daphnia magna (D. magna) through chronic toxicity test with various concentration range (0, 0.3125, 0.625, 1.25, 2.5, and 5 ug/L) of 3,4-DCA. We evaluated survival, reproduction, and population growth of D. magna after 21 days exposure test, and examined the sensitivity between offspring (from third to fifth) from mother exposed to 3,4-DCA. Results showed that cumulative fecundity decreased with increasing concentration of 3,4-DCA, though the given concentrations of 3,4-DCA did not affect to the survivorship of D. magna. Although age at first reproduction of D. magna increased along the increasing concentrations of 3,4-DCA, the age at first reproduction was decreasing along the consecutive offspring. Our results indicated that offspring might adapt to the 3, 4-DCA toxicity. This study reflects actual environmental exposure.

Biography :

Hyemin Kim has her expertise in Microbial Ecology and Environmental Toxicology. She has completed her PhD from Seoul National University