o:296 Age‑specific accumulation of toxic metal(loid)s in northern pike (Esox lucius) juveniles en Northern pike specimens of 0 + , 1 , and 2 + age classes were collected in June 2013 from the Vizelj channel near Belgrade (Serbia). Inductively coupled plasma optical spectrometry (ICP-OES) and atomic absorption spectrometer SpectrAA 220 were used for analyzing concentrations of As, Cr, Cd, Co, Cu, Fe, Sr, Pb, and Zn, as well as Hg in muscle, gills, and liver. Metal pollution index (MPI) was calculated. Concentrations of As, Cd, Co, and Pb were below the limit of detection. Concentrations of Cu, Hg, and Zn in muscle did not exceed the maximum allowed concentrations. The gills were tissue which was most afected by pollution. The highest concentrations of Fe in muscle, Cr and Fe in gills, and Hg, Sr, and Zn in liver were recorded in 0+ individuals, as well as Zn in gills of 2 individuals. On contrary, the lowest concentrations were recorded for Zn in gills of 0 + individuals, Hg in gills of 1 + individuals, and Fe in muscle, Cr and Sr in gills, and Zn in liver of 2 + individuals. Regarding age classes, 2 juveniles had the highest MPI values for all tissues. Correlations between the metal(loid) accumulation and ish condition were not signiicant, as well as between ish length and weight and Cu and Hg in muscle, Cu, Hg, and Sr in gills, and Cu, Cr, and Fe in liver. Results indicated that young individuals were more sensitive to pollution, but older ish showed higher overall bioaccumulation of toxic elements analyzed in this study. Heavy metal · Bioindication · Pike · Age class · MPI · ICP-OES 1552099 10.1007/s10661-021-09004-2 2022-05-19T10:16:45.315Z 44 yes 46 Dušan Nikolić Department of Biology and Inland Waters Protection, University of Belgrade – Institute for Multidisciplinary Research, Age‑specific accumulation of toxic metal(loid)s in northern pike (Esox lucius) juveniles Stefan Skorić Department of Biology and Inland Waters Protection, University of Belgrade – Institute for Multidisciplinary Research, Age‑specific accumulation of toxic metal(loid)s in northern pike (Esox lucius) juveniles person Saša Janković Institute of meat hygiene and technology Age‑specific accumulation of toxic metal(loid)s in northern pike (Esox lucius) juveniles person 0000-0002-5223-6993 Aleksandar Hegediš University of Belgrade – Faculty of Biology Age‑specific accumulation of toxic metal(loid)s in northern pike (Esox lucius) juveniles person Vesna Dijkanović Department of Hydroecology and Water Protection, University of Belgrade – Institute for Biological Research “Siniša Stanković” Age‑specific accumulation of toxic metal(loid)s in northern pike (Esox lucius) juveniles person application/pdf 1023482 https://unilib.phaidrabg.rs/o:296 no yes 1 70 92000001 71A01 Environmental Monitoring Assess 193 229 Springer 2021