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Trace Metal Levels in Rainbow Trout (Oncorhynchus mykiss) Cultured in Net Cages in a Reservoir and Evaluation of Human Health Risks from Consumption

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Abstract

Although fish consumption has positive health effects, metals accumulated in fish can cause human health risks. In this study, the levels of ten metals in rainbow trout (Oncorhynchus mykiss) farmed in the Keban Dam Reservoir, which has the biggest rainbow trout production capacity in Turkey, were determined and compared with the maximum permissible levels (MPLs). Also, human health risks associated with rainbow trout consumption were assessed. The metal concentrations in rainbow trout were found below the MPLs. The estimated daily intake of each metal was much lower than the respective tolerable daily intake. The target hazard quotient (THQ) for individual metal and total THQ for combined metals did not exceed 1, indicating no health risk for consumers. The cancer risk (CR) value for inorganic arsenic was within the acceptable lifetime risk range of 10−6 and 10−4. For carcinogenic and non-carcinogenic effects, the maximum allowable fish consumption rates were high enough to ensure the human health. According to these results, the consumption of rainbow trout farmed in the Keban Dam Reservoir does not pose a risk on human health.

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Acknowledgements

This work was supported by Munzur University Scientific Projects Coordination Department (Project Number: YLTUB015-07). Special thanks are given to the anonymous reviewers and editor Prof. John B. Vincent for their constructive comments for improving the manuscript.

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Authors and Affiliations

  1. Faculty of Fisheries, Department of Basic Aquatic Sciences, Inonu University, Malatya, Turkey

    Memet Varol

  2. Faculty of Fisheries, Department of Fish Processing Technology, Munzur University, Tunceli, Turkey

    Gülderen Kurt Kaya & Sumru Anık Alp

  3. Aquaculture Research Institute, Elazığ, Turkey

    Muhammet Raşit Sünbül

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  1. Memet Varol
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  2. Gülderen Kurt Kaya
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Correspondence to Memet Varol.

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Varol, M., Kaya, G.K., Alp, S.A. et al. Trace Metal Levels in Rainbow Trout (Oncorhynchus mykiss) Cultured in Net Cages in a Reservoir and Evaluation of Human Health Risks from Consumption. Biol Trace Elem Res 184, 268–278 (2018). https://doi.org/10.1007/s12011-017-1156-2

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