Sex in troubled waters: Widespread agricultural contaminant disrupts reproductive behaviour in fish

Hormones and Behavior
Michael G BertramBob B M Wong

Abstract

Chemical pollution is a pervasive and insidious agent of environmental change. One class of chemical pollutant threatening ecosystems globally is the endocrine disrupting chemicals (EDCs). The capacity of EDCs to disrupt development and reproduction is well established, but their effects on behaviour have received far less attention. Here, we investigate the impact of a widespread androgenic EDC on reproductive behaviour in the guppy, Poecilia reticulata. We found that short-term exposure of male guppies to an environmentally relevant concentration of 17β-trenbolone-a common environmental pollutant associated with livestock production-influenced the amount of male courtship and forced copulatory behaviour (sneaking) performed toward females, as well as the receptivity of females toward exposed males. Exposure to 17β-trenbolone was also associated with greater male mass. However, no effect of female exposure to 17β-trenbolone was detected on female reproductive behaviour, indicating sex-specific vulnerability at this dosage. Our study is the first to show altered male reproductive behaviour following exposure to an environmentally realistic concentration of 17β-trenbolone, demonstrating the possibility of widespread disruption o...Continue Reading

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Citations

Feb 15, 2019·Biological Reviews of the Cambridge Philosophical Society·Ulrika Candolin
Jul 30, 2019·Philosophical Transactions of the Royal Society of London. Series B, Biological Sciences·Ulrika Candolin, Bob B M Wong
Aug 24, 2018·Proceedings. Biological Sciences·Minna SaaristoKathryn E Arnold
Feb 9, 2020·Environmental Science and Pollution Research International·Sean Mark PatrickChristiaan de Jager
Sep 14, 2018·The Science of the Total Environment·Jack B FursdonBob B M Wong
Apr 26, 2019·Organic Letters·Nicholas C PflugJames B Gloer

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