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Turkish Journal of Fisheries and Aquatic Sciences 2015, Vol 15, Num, 3     (Pages: 619-624)

Daphnia magna as a Test Species for Toxicity Evaluation of Municipal Wastewater Treatment Plant Effluents on Freshwater Cladoceran in Turkey

Fatma Koçbaş 1 ,Rahime Oral 2

1 Celal Bayar University, Faculty of Arts and Sciences, Department of Biology, Muradiye Kampüsü - Yunusemre - Manisa, Turkey
2 Ege University, Faculty of Fisheries, Department of Hydrobiology, Izmir, Turkey
DOI : 10.4194/1303-2712-v15_3_05 Viewed : 2774 - Downloaded : 4004 Aquatic toxicity of municipal wastewater was evaluated in an acute toxicity test using water flea, Daphnia magna as an freshwater aquatic experimental animal model. Toxicity test were performed on samples of both untreated (raw) and treated wastewaters were collected Manisa municipal effluents. Undiluted untread and treated effluents were very toxic to D. magnaand cause to death of all exposed daphnids. Dilution of wastewaters was observed to decrease percentage of influence of biological toxicity based on dilutional rate. Acute toxic effect of untreated wastewater on D. magnawas more than that of treated wastewater. In addition, the longer the period of exposure to D. magna, the more significantly toxic effect increased. Keywords : Water flea, acute toxicity, municipal wastewater