Document Detail


Bioaccumulation of mercury in the pelagic food chain of the Lake Baikal.
MedLine Citation:
PMID:  20117820     Owner:  NLM     Status:  MEDLINE    
Abstract/OtherAbstract:
Mercury (Hg) concentrations were analyzed in the livers of Baikal seals and in plankton, zoobenthos and fish which constitute food items for the seals. Concentrations of Hg in the liver of Baikal seals were up to two orders of magnitude lower than those in seals inhabiting other lakes. The low levels of Hg are due to the low levels of the Hg in the fish from the family Comephoride, which reflect the very low concentrations of Hg in Baikal water. The development stage (pups and adults) and the sex of the seals have significant influence on their hepatic Hg concentrations. The differences between Hg accumulation in adult males, adult females and pups could be attributed to the reproductive cycle of the Baikal seals. In spite of low concentrations, Hg is characterized by high values of the concentration factor (CF) for the livers of for Baikal seals. Biomagnification factors (BMFs) suggest biomagnifications of Hg in the fish-seal trophic link.
Authors:
T Ciesielski; M V Pastukhov; P Szefer; B M Jenssen
Publication Detail:
Type:  Journal Article; Research Support, Non-U.S. Gov't     Date:  2010-02-01
Journal Detail:
Title:  Chemosphere     Volume:  78     ISSN:  1879-1298     ISO Abbreviation:  Chemosphere     Publication Date:  2010 Mar 
Date Detail:
Created Date:  2010-02-22     Completed Date:  2010-06-22     Revised Date:  -    
Medline Journal Info:
Nlm Unique ID:  0320657     Medline TA:  Chemosphere     Country:  England    
Other Details:
Languages:  eng     Pagination:  1378-84     Citation Subset:  IM    
Copyright Information:
Copyright (c) 2010 Elsevier Ltd. All rights reserved.
Affiliation:
Department of Biology, Norwegian University of Science and Technology, Trondheim, Norway. tomasz.ciesielski@bio.ntnu.no
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MeSH Terms
Descriptor/Qualifier:
Animals
Fishes / metabolism*
Fresh Water
Hungary
Liver / metabolism*
Mercury / analysis*,  metabolism*
Phoca / metabolism*
Plankton / metabolism*
Water Pollutants, Chemical / metabolism
Chemical
Reg. No./Substance:
0/Water Pollutants, Chemical; 7439-97-6/Mercury

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