Ecological impacts of tributyltin on estuarine communities in the Hastings River, NSW Australia

A. C. Roach*, S. P. Wilson

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

15 Citations (Scopus)


Oyster (Saccostrea commercialis) biomonitoring, assessment of oyster and gastropod (Bembicium auratum) abundance, and gastropod imposex were used to measure the significance of tributyltin (TBT) contamination in an intertidal mangrove forest. We studied the bioavailable levels of TBT in oysters approximately 1 km downstream and 2 km upstream from a TBT waste disposal site. We found observable declines in the abundance of oysters and gastropods correlated with the bioavailable TBT and these findings were confirmed by mapping oyster beds. Oyster cover near the disposal site ranged from 0% to 5% while downstream and upstream populations ranged in cover from 25-50% to 5-25%, respectively. Similarly, gastropod abundances at the disposal site were only 7% of the downstream population and 17% of the upstream population. Imposex was present in 90% of female B. auratum from populations near the disposal site but this effect declined more sharply than the population level effects.

Original languageEnglish
Pages (from-to)1780-1786
Number of pages7
JournalMarine Pollution Bulletin
Issue number12
Publication statusPublished - 2009
Externally publishedYes


  • Bivalves
  • Estuarine
  • Gastropods
  • Impact assessment
  • Imposex
  • Tributyltin


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