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Metals and organochlorines in small cetaceans stranded on the east coast of Australia

Law, R J ; Morris, R J ; Allchin, C R ; Jones, B R ; Nicholson, M D

Marine pollution bulletin, September 2003, Vol.46(9), pp.1206-11 [Periódico revisado por pares]

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  • Título:
    Metals and organochlorines in small cetaceans stranded on the east coast of Australia
  • Autor: Law, R J ; Morris, R J ; Allchin, C R ; Jones, B R ; Nicholson, M D
  • Assuntos: Cetacea ; Hydrocarbons, Chlorinated ; Insecticides -- Pharmacokinetics ; Metals, Heavy -- Pharmacokinetics ; Water Pollutants -- Pharmacokinetics
  • É parte de: Marine pollution bulletin, September 2003, Vol.46(9), pp.1206-11
  • Descrição: Tissue samples of three species of small cetaceans taken opportunistically along the east coast of Australia were analyzed for concentrations of heavy metals and organochlorines. The species were bottlenose dolphins Tursiops truncatus aduncus, common dolphins Delphinus delphis, and melon-headed whales Peponocephala electra. Except for cadmium, metal concentrations were higher in liver than in kidney, and the highest concentrations of Cd were found in the adult melon-headed whales. Mercury concentrations were low in young animals and higher in adults. The concentration ranges of chromium, nickel, copper, zinc, and arsenic were within those reported previously for small cetaceans from other areas, while lead concentrations were low or undetectable. Concentrations of alpha - and gamma -hexachlorocyclohexanes, hexachlorobenzene, and dieldrin were low in all samples, while concentrations of total DDTs ranged 0.192.3. The predominant DDT compound was p,p'-DDE, with highest concentrations observed in adult bottlenose dolphins. Blubber PCB concentrations were low relative to those observed in small cetaceans from the UK, with the sum of 25 PCB congeners concentrations ranging 0.181.38 mg/kg. All relevant concentration data are tabulated.
  • Idioma: Inglês

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