title: Importance of fish gender as a factor in environmental monitoring of mercury.
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).
authors.affiliation: Department of Zoology and Fisheries, Faculty of Agrobiology, Food and Natural Resources, Czech University of Life Sciences, 165 21, Prague 6, Suchdol, Czech Republic, jankovska@af.czu.cz.
authors.forename: Ivana
authors.initials: I
authors.lastname: Jankovská
authors.forename: Daniela
authors.initials: D
authors.lastname: Miholová
authors.forename: Stěpán
authors.initials: S
authors.lastname: Romočuský
authors.forename: Miloslav
authors.initials: M
authors.lastname: Petrtýl
authors.forename: Iva
authors.initials: I
authors.lastname: Langrová
authors.forename: Lukáš
authors.initials: L
authors.lastname: Kalous
authors.forename: Vladislav
authors.initials: V
authors.lastname: Sloup
authors.forename: Petr
authors.initials: P
authors.lastname: Válek
authors.forename: Jaroslav
authors.initials: J
authors.lastname: Vadlejch
authors.forename: Daniela
authors.initials: D
authors.lastname: Lukešová
mesh_terms: D000818:Animals; D018153:Czech Republic; D004784:Environmental Monitoring / Q000379:methods*; D005260:Female; D005399:Fishes / Q000502:physiology*; D006066:Gonads / Q000378:metabolism*; D008297:Male; D008628:Mercury / Q000378:metabolism* / Q000633:toxicity; D045483:Rivers / Q000737:chemistry; D012737:Sex Factors; D014874:Water Pollutants, Chemical / Q000378:metabolism* / Q000633:toxicity
chemical_list: D014874:Water Pollutants, Chemical; D008628:Mercury