title: Age-specific metal and accumulation patterns in different tissues of nase (Chodrostoma nasus) from the Medjuvršje Reservoir.
abstract: Nase (Chodrostoma nasus L. 1758) specimens of four age classes (1(+) to 4(+)) were caught in July 2013 in the Medjuvršje Reservoir. Concentrations of 14 metals and elements (Al, B, Ba, Cd, Co, Cr, Cu, Fe, Mn, Mo, Ni, Si, Sr, Zn) in the muscle, gills and liver were analyzed by inductively-coupled plasma optical spectrometry (ICP-OES). The highest concentrations of Al, Ba, Co, Cr, Mn, Si, Sr and Zn were detected in gills, while Cd, Cu, Fe and Mo reached the highest values in the liver. The majority of the analyzed elements were found in minimal concentrations in the muscle. Younger age classes (1(+), 2(+)) were differentiated by higher concentrations of Mn, Sr and Zn in muscle tissue, while the older ones were mainly differentiated by higher concentrations for Ni and Cu. The youngest age class (1(+)) was distinguished by higher concentrations of Zn, while the oldest age class (4(+)) was distinguished by higher concentrations of Ba, Cu, Mo and Sr in gills. Results obtained were likely caused by differences in the physiology and feeding habits between younger (1-2(+)) and older (3-4(+)) age groups of nase.
authors.affiliation: University of Belgrade, Institute for biological research "Siniša Stanković", Despot Stefan 142 Blvd, 11060 Belgrade, Serbia. Electronic address: djiki@ibiss.bg.ac.rs.
authors.forename: Vesna
authors.initials: V
authors.lastname: Djikanović
authors.affiliation: University of Belgrade, Institute for Multidisciplinary Research, Kneza Višeslava 1, 11000 Belgrade, Serbia.
authors.forename: Stefan
authors.initials: S
authors.lastname: Skorić
authors.affiliation: University of Belgrade, Institute for Multidisciplinary Research, Kneza Višeslava 1, 11000 Belgrade, Serbia.
authors.forename: Ivan
authors.initials: I
authors.lastname: Jarić
authors.affiliation: University of Belgrade, Institute for biological research "Siniša Stanković", Despot Stefan 142 Blvd, 11060 Belgrade, Serbia.
authors.forename: Mirjana
authors.initials: M
authors.lastname: Lenhardt
mesh_terms: D000367:Age Factors; D000818:Animals; D003530:Cyprinidae / Q000378:metabolism*; D004032:Diet; D004781:Environmental Exposure; D004784:Environmental Monitoring / Q000379:methods*; D005880:Gills / Q000737:chemistry; D008099:Liver / Q000737:chemistry; D008670:Metals / Q000378:metabolism*; D009132:Muscles / Q000737:chemistry; D055771:Serbia; D014874:Water Pollutants, Chemical / Q000378:metabolism*
chemical_list: D008670:Metals; D014874:Water Pollutants, Chemical
keywords: Fish; Gills; ICP-OES; Liver; Metal pollution; Reservoir