Bioaccumulation of trace elements in pelagic fish from the Western Indian Ocean

Type Article
Date 2007-03
Language English
Author(s) Kojadinovic Jessica1, 2, 3, Potier Michel4, Le Corre Matthieu1, Cosson Richard P.2, Bustamante Paco4, 5
Affiliation(s) 1 : Univ La Reunion, ECOMAR, EA 33, F-97715 St Denis, France.
2 : Univ Nantes, EMI, EA 2663, F-44322 Nantes 3, France.
3 : Univ La Rochelle, IFREMER, CNRS, CRELA,UMR 6217, F-17042 La Rochelle, France.
4 : IRD, F-97715 St Denis De La Reunion, France.
Source Environmental Pollution (0269-7491) (Elsevier), 2007-03 , Vol. 146 , N. 2 , P. 548-566
DOI 10.1016/j.envpol.2006.07.015
WOS© Times Cited 160
Keyword(s) Guidelines, Detoxification, Contamination, Fish, Metals
Abstract Trace elements were analyzed in fish of commercial interest to determine their importance in marine systems of the Western Indian Ocean and their bioaccumulation patterns. The results are equivalent or lower than levels reported in ichthyofauna worldwide. Certain values of muscular Cd, Hg, Pb and Zn were, however, above thresholds for human consumption. Levels varied among tissues, species and fish length, but were seldom influenced by the nutritional condition of the fish, its gender and its reproductive status. Correlations between hepatic Hg and Se levels in Swordfish (r(2) = 0.747) and Yellowfin Tunas (r(2) = 0.226), and among metallothionein linking metals imply the existence of detoxification processes in these species. Level differences between fish from the Mozambique Channel and Reunion Island reflect differences of diets rather than differences of elemental availability in both environments. (c) 2006 Elsevier Ltd. All rights reserved.
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