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Adverse Outcome Pathway on Aromatase Inhibition Leading to Reproductive Dysfunction (in Fish)

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  • Daniel L. Villeneuve

    (US Environmental Protection Agency (EPA))

Abstract

This adverse outcome pathway details the linkage between inhibition of gonadal aromatase activity in females and reproductive dysfunction, as measured through the adverse effect of reduced cumulative fecundity and spawning. Initial development of this AOP draws heavily on evidence collected using repeat-spawning fish species. Cumulative fecundity is the most apical endpoint considered in the OECD 229 Fish Short Term Reproduction Assay. The OECD 229 assay serves as screening assay for endocrine disruption and associated reproductive impairment (OECD 2012). Cumulative fecundity is one of several variables known to be of demographic significance in forecasting fish population trends. Therefore, this AOP has utility in supporting the application of measures of aromatase, or in silico predictions of the ability to inhibit aromatase, as a means to identify chemicals with known potential to adversely affect fish populations and potentially other oviparous vertebrates.

Suggested Citation

  • Daniel L. Villeneuve, 2016. "Adverse Outcome Pathway on Aromatase Inhibition Leading to Reproductive Dysfunction (in Fish)," OECD Series on Adverse Outcome Pathways 4, OECD Publishing.
    • Handle: RePEc:oec:envaad:4-en
    DOI: 10.1787/5jlsv05mx433-en
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    Keywords

    aromatase inhibition; Fish Short Term Reproduction Assay; reduced cumulative fecundity; repeat-spawning fish species; reproductive toxicity;
    All these keywords.

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