Accumulation pattern of butyltin compounds in dolphin, tuna, and shark collected from Italian coastal Waters

  • K. Kannan
  • S. Corsolini
  • S. Focardi
  • S. Tanabe
  • R. Tatsukawa


Tributyltin (TBT) and its breakdown products, mono-(MBT) and dibutyltin (DBT) were determined in bottlenose dolphin (Tursiops truncatus), bluefin tuna (Thunnus thynnus thynnus) and blue shark (Prionace glauca) collected from the Italian coast of the Mediterranean Sea in 1992–1993. Concentrations of total butyltin (BTs) in the liver of dolphin (1,200–2,200 ng/g wet wt) were an order of magnitude higher than in the blubber (48–320 ng/g wet wt). TBT was the predominant butyltin species in the blubber while DBT accounted for an higher proportion in the liver of dolphins. Butyltin concentrations in bluefin tuna were lower than those in dolphins, with TBT highest in the muscle and DBT in the liver. Concentrations of BTs in blue sharks were lower than those in dolphin and tuna, with kidney having the highest concentrations. TBT was the predominant form of butyltin derivatives in all the tissues of shark. Accumulation of butyltin compounds in liver/kidney seems to be associated with the presence of proteins such as glutathione.


Glutathione Coastal Water Breakdown Product Accumulation Pattern Predominant Form 
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Copyright information

© Springer-Verlag New York Inc. 1996

Authors and Affiliations

  • K. Kannan
    • 1
  • S. Corsolini
    • 2
  • S. Focardi
    • 2
  • S. Tanabe
    • 1
  • R. Tatsukawa
    • 1
  1. 1.Department of Environment ConservationEhime UniversityMatsuyamaJapan
  2. 2.Dipartimento di Biologia AmbientaleUniversity of SienaSienaItaly

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