title: Long-term evaluation of lethal and sublethal toxicity of industrial effluents using Daphnia magna and Moina macrocopa.
abstract: Acute toxicity and feeding rate inhibition of effluent from a wastewater treatment plant and its adjacent stream water on Daphnia magna and Moina macrocopa were comparatively studied. The acute toxicity of the final effluent (FE) fluctuated greatly over the sampling period from January to August 2009. Toxicity identification results of the FE in July 2009 showed that Cu originating from the Fenton's reagent was likely a key toxicant. In addition, the feeding rate of both species was still inhibited by the FEs in which acute toxicity was not observed. These findings indicate that the feeding response would be a useful tool for monitoring sublethal effects of industrial effluents. For the acute toxicity test, M. macrocopa was more sensitive than D. magna, but the opposite result was true in the case of the feeding rate inhibition. These suggest that different species have different sensitivities to toxic chemicals and to the test methods.
authors.affiliation: Division of Environmental Science & Ecological Engineering, Korea University, Anam-dong, Sungbuk-gu, Seoul 136-713, Republic of Korea.
authors.forename: Xianliang
authors.initials: X
authors.lastname: Yi
authors.forename: Sung-Wook
authors.initials: SW
authors.lastname: Kang
authors.forename: Jinho
authors.initials: J
authors.lastname: Jung
mesh_terms: D000818:Animals; D033361:Cladocera / Q000187:drug effects*; D003621:Daphnia / Q000187:drug effects*; D004784:Environmental Monitoring / Q000379:methods*; D006861:Hydrogen Peroxide; D006863:Hydrogen-Ion Concentration; D007220:Industrial Waste / Q000009:adverse effects*; D007221:Industry; D007501:Iron; D052616:Solid Phase Extraction; D013784:Textiles; D023382:Toxicity Tests, Acute / Q000379:methods*; D014865:Waste Disposal, Fluid; D014874:Water Pollutants, Chemical / Q000737:chemistry / Q000633:toxicity*
chemical_list: C045076:Fenton's reagent; D007220:Industrial Waste; D014874:Water Pollutants, Chemical; D006861:Hydrogen Peroxide; D007501:Iron