Organochlorine contamination in some odontoceti species from the North Pacific and Indian Ocean

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Abstract

Concentrations of persistent organochlorines were determined in the blubber and melon of 11 species of adult male odontocetis collected from the North Pacific, Indian Ocean and nearby seas. Mean concentrations of DDs (33 μg/g wet wt) were the highest followed by PCBs (32 μg/g wet wt), chlordane compounds (CHLs: 3.7 μg/g wet wt), HCHs (1.1 μg/g wet wt), and HCB (0.32 μg/g wet wt). Odontoceti species inhabiting temperate waters revealed maximum residual concentrations of these contaminants, and the elevated DDT and PCB residues detected seem to suggest that some of the present species might potentially be at high risk. Relatively high DDT concentrations were found in tropical water species, which could be attributed to the current usage of DDT in the tropics and the less movable nature of this compound via long-range atmospheric transport. The HCH levels in animals inhabiting cold and temperate waters were higher than those inhabiting tropical waters, a result that was perhaps reflective of atmospheric transport from the tropical source to the northern sinks. A similar pattern was also observed in PCBs, CHLs and HCB, probably indicating the ongoing discharge of these compounds from mid-latitudes as well as those originating in tropical regions.

References (38)

  • S. Tanabe et al.

    Global contamination by persistent organochlorines and their ecotoxicological impact on marine mammals

    The Science of the Total Environment

    (1994)
  • S. Tanabe et al.

    Persistent organochlorine residues in northern fur seal from the Pacific coast of Japan since 1971

    Environmental Pollution

    (1994)
  • D. Calamari et al.

    Role of plant biomass in the global environmental partitioning of chlorinated hydrocarbons

    Environmental Science and Technology

    (1991)
  • V.G. Cockroft et al.

    Organochlorines in bottlenose dolphins Tursiups truncatus from the east coast of South Africa

    South African Journal of Marine Sciences

    (1989)
  • T. Colborn et al.

    Epidemiological analysis of persistent organochlorine contaminants in cetaceans

    Reviews in Environmental Contamination and Toxicology

    (1996)
  • M. Dearth et al.

    Chlordane accumulation in people

    Environmental Science and Technology

    (1991)
  • A. de Kock et al.

    Persistent organochlorines residues in small cetaceans from the east and west coast of South Africa

    The Science of the Total Environment

    (1994)
  • J. Flavier
  • G. Forget

    Pesticides and the Third World

    Journal of Toxicology and Environmental Health

    (1991)
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