Ecotoxicology

, Volume 9, Issue 6, pp 399–412 | Cite as

Effects of Endocrine Disruptors on Prosobranch Snails (Mollusca: Gastropoda) in the Laboratory. Part II: Triphenyltin as a Xeno-Androgen

  • Ulrike Schulte-Oehlmann
  • Michaela Tillmann
  • Bernd Markert
  • Jörg Oehlmann
  • Burkard Watermann
  • Sandra Scherf

Abstract

In laboratory experiments the effects of suspected endocrine disrupting chemicals on freshwater and marine prosobranch species were analysed. In this second of three publications the responses of the freshwater ramshorn snail Marisa cornuarietis and of two marine prosobranchs (the dogwhelk Nucella lapillus and the netted whelk Hinia reticulata) to the xeno-androgenic model compound triphenyltin (TPT) are presented. Marisa and Nucella were exposed via water (nominal concentrations 5–500 ng TPT-Sn/L) and Hinia via sediments (nominal concentrations 50–500 μg TPT-Sn/kg dry wt.) for up to 4 months. Female ramshorn snails but not the two marine species developed imposex in a time and concentration dependent manner (EC10 4 months: 12.3 ng TPT-Sn/L) with a comparable intensity as described for tributyltin. TPT reduced furthermore the fecundity of Marisa at lower concentrations (EC10 4 months: 5.59 ng TPT-Sn/L) with a complete inhibition of spawning at nominal concentrations ≥250 ng TPT-Sn/L (mean measured ±SD: ≥163±97.0 ng TPT-Sn/L). The extension of the pallial sex organs (penis with accessory structures and prostate gland) of male ramshorn snails and dogwhelks were reduced by up to 25% compared to the control but not in netted whelks. Histopathological analyses for M. cornuarietis and H. reticulata provide evidence for a marked impairment of spermatogenesis (both species) and oogenesis (only netted whelks). The test compound induced a highly significant and concentration independent increase in the incidence of hyperplasia on gills, osphradia and other organs in the mantle cavity of N. lapillus indicating a carcinogenic potential of TPT. The results show that prosobranchs are sensitive to endocrine disruption at environmentally relevant concentrations of TPT. Also, M. cornuarietis is a promising candidate for a future organismic invertebrate system to identify endocrine-mimetic test compounds.

endocrine disruptors xeno-androgen triphenyltin imposex snails 

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Copyright information

© Kluwer Academic Publishers 2000

Authors and Affiliations

  • Ulrike Schulte-Oehlmann
    • 1
  • Michaela Tillmann
    • 1
  • Bernd Markert
    • 1
  • Jörg Oehlmann
    • 2
  • Burkard Watermann
    • 3
  • Sandra Scherf
    • 3
  1. 1.Fachgruppe Human- und ÖkotoxikologieInternationales Hochschulinstitut Zittau, Lehrstuhl UmweltverfahrenstechnikZittauGermany
  2. 2.Fachgruppe Human- und ÖkotoxikologieInternationales Hochschulinstitut Zittau, Lehrstuhl UmweltverfahrenstechnikZittauGermany
  3. 3.LimnoMarHamburgGermany

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