Importance of fish gender as a factor in environmental monitoring of mercury |
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Authors: | Ivana Jankovská Daniela Miholová Štěpán Romočuský Miloslav Petrtýl Iva Langrová Lukáš Kalous Vladislav Sloup Petr Válek Jaroslav Vadlejch Daniela Lukešová |
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Affiliation: | 1. Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, 165 21, Prague 6, Suchdol, Czech Republic 2. Department of Chemistry, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, 165 21, Prague 6, Suchdol, Czech Republic 3. Department of Animal Science and Food processing in Tropics and Subtropics, Faculty of Tropical AgriSciences, Czech University of Life Sciences Prague, 165 21, Prague 6, Suchdol, Czech Republic
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Abstract: | Total mercury concentrations were determined in the gonadal tissues of 15 female and 10 male European perch (Perca fluviatilis) from one location of the stream “Jevanský potok” located about 30 km from Prague (Czech Republic). Tissue samples were frozen at ?26 °C in polypropylene containers until further processing, which was carried out using an Advance Mercury Analyser (single purpose atomic absorption spectrometer). Mercury concentrations were present in all analysed gonad samples, and ranged from 2.3 to 12.7 μg/kg wet weight. However, we determined a mean Hg concentration (9.45 μg/kg) in male gonads that was 2.4 times greater than that of female gonads (3.9 μg/kg). This is an important finding when taking into account fish sex in environmental pollution monitoring (especially for mercury contamination). |
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