title: Age-dependent accumulation of (137)Cs by pike Esox lucius in the Yenisei River.
abstract: Age-dependent accumulation of (137)Cs in the muscles and bodies of the pike Esox lucius (aged two to seven years) inhabiting a section of the Yenisei River polluted with artificial radionuclides has been studied. The content of (137)Cs in muscles varied from 0.5 to 7.0 Bq/kg of fresh weight. The maximum content of the radionuclide has been found in juveniles. The content of (137)Cs in pike muscles and body decreased considerably with age. The high content of (137)Cs in the muscles of juveniles is probably a consequence of their higher intensity of feeding as compared to older individuals, which is due to the intense growth of juveniles.
authors.affiliation: Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russia. t_zotina@ibp.ru.
authors.forename: T A
authors.initials: TA
authors.lastname: Zotina
authors.affiliation: Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russia.
authors.forename: E A
authors.initials: EA
authors.lastname: Trofimova
authors.affiliation: Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russia.
authors.forename: D V
authors.initials: DV
authors.lastname: Dementyev
authors.affiliation: Institute of Biophysics, Siberian Branch, Russian Academy of Sciences, Akademgorodok, Krasnoyarsk, 660036, Russia.
authors.forename: A Ya
authors.initials: AY
authors.lastname: Bolsunovsky
mesh_terms: D000375:Aging; D000818:Animals; D002588:Cesium Radioisotopes / Q000378:metabolism*; D017859:Esocidae / Q000378:metabolism*; D018482:Muscle, Skeletal / Q000378:metabolism*; D045483:Rivers; D012800:Siberia
chemical_list: D002588:Cesium Radioisotopes