Changes in reproductive physiology of mangrove rivulus Kryptolebias marmoratus following exposure to environmentally relevant doses of ethinyl oestradiol |
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| Authors: | E L Johnson K L Weinersmith R L Earley |
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| Institution: | 1. Department of Biological Sciences, University of Alabama, Tuscaloosa, AL 35487, U.S.A.;2. Department of BioSciences, Rice University, Houston, TX 77005, U.S.A. |
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| Abstract: | Kryptolebias marmoratus exposed to 4 ng l−1 of ethinyl oestradiol (EE2) for 30 days experienced significant changes in endogenous 17β‐oestradiol (E2) and 11‐ketotestosterone (KT) and qualitative changes in gonad morphology. Both hermaphrodites and males showed a significant decrease in E2, whereas only males exhibited a significant decrease in KT. Exposure to EE2 resulted in a decrease in spermatid and spermatocyte density in males and an increase in the number of early stage oocytes in hermaphrodites. |
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| Keywords: | 11‐ketotestosterone 17β ‐oestradiol endocrine disruption fish gonad morphology reproduction |
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