(Short technical report) The Impact of rainbow trout (Oncorhynchus mykiss) farm effluents on water quality in Zarringol Stream

Subject Areas : New Technologies in Aquaculture Development

Received: 2021-02-02 Accepted : 2021-02-02 Published : 2013-05-22

Keywords: Water Quality, Keywords: Oncorhynchus mykiss, Trout farm effluents, Zarringol Stream,

Abstract :

Abstract[1] The aim of this study was to assess the impact of trout farm effluents on water quality in the Zarringol Stream. In this study, two trout farms and 6 stations were selected and physiochemical characteristics and nutrients of water, including DO, NO2, NO3, PO4, pH, and EC were measured each 45 days for one year in 2009-2010. The results showed that trout farms had a significant impact on EC, PO4, NO2 and NO3 concentrations in the water (P<0.05) but changes in DO and pH concentrations were insignificant (P>0.05). There was significantly an increase in the concentration of NO2, EC, PO4 and NO3 downstream of the trout farms. Additionally, the level of PO4 and NO3 in the next station of trout farms were more than the standard environmental amount.   * Corresponding Authors; Email: [e-mail]