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Changes in reproductive physiology of mangrove rivulus Kryptolebias marmoratus following exposure to environmentally relevant doses of ethinyl oestradiol
Author(s) -
Johnson E. L.,
Weinersmith K. L.,
Earley R. L.
Publication year - 2016
Publication title -
journal of fish biology
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.672
H-Index - 115
eISSN - 1095-8649
pISSN - 0022-1112
DOI - 10.1111/jfb.12814
Subject(s) - biology , reproductive physiology , mangrove , physiology , zoology , medicine , endocrinology , ecology
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.