In Situ Assessment of Donghu Lake China Using Rare Minnow (Gobiocypris rarus).

In Situ Assessment of Donghu Lake China Using Rare Minnow (Gobiocypris rarus). Arch Environ Contam Toxicol. 2020 Jun 30;: Authors: Xiong X, Qiu N, Su L, Hou M, Xu C, Xiong Y, Dong X, Song Z, Wang J Abstract In this work, rare minnow (Gobiocypris rarus) was applied as a sentinel organism and set in cages at control and test sampling sites in Donghu Lake for 4 weeks in March, June, September, and December 2016 to assess the biological toxicity of in situ water. Sampling for active biomonitoring and physicochemical variables was performed weekly. The control was obtained from the outdoor pool of the Institute of Hydrobiology, China. Superoxide dismutase, lipoperoxidation, metallothioneins, acetylcholinesterase activity, and Vtg mRNA expression were determined as biomarkers during the field exposure period. Survival and growth also were monitored to evaluate the overall physiological condition of the fish. The seasonal changes of organic pollutants and trace metals (As, Hg, Cr, Cu, Zn, Cd, Pb) in surface water were determined. The integrated biomarker response (IBR) index was applied to summarize biomarker responses and correlate stress levels with concentrations of organic pollutants and trace metals in the surface water. Results indicated that complex pollution by persistent organic pollutants and heavy metals was present in Donghu Lake and that the in situ exposed organisms were stressed. Moreover, the complex pollution of Donghu Lak...
Source: Archives of Environmental Contamination and Toxicology - Category: Environmental Health Authors: Tags: Arch Environ Contam Toxicol Source Type: research