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Motility of sperm from adult largemouth bass pond exposure to 17 alpha-ethinylestradiol or estrone-atrazine mixture (2018)


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Jenkins, J.A., and Leet, J., 2022, Motility of sperm from adult largemouth bass pond exposure to 17 alpha-ethinylestradiol or estrone-atrazine mixture (2018): U.S. Geological Survey data release,


Adult largemouth bass have been shown to be sensitive to induction of intersex in response to chronic estrogen exposures over a complete reproductive cycle. Late summer to fall is the period of early gonad recrudescence when spermatogenesis is beginning in preparation for the spawning season in the spring. Our objective was to assess in 2018 whether early gonad recrudescence was a period of sensitivity for induction of intersex and/or alterations in reproductive condition or function. Adult male largemouth bass were exposed in outdoor pond mesocosms from post-spawning to early gonad recrudescence to either 17alpha-ethinylestradiol or to a mixture of endocrine-active substances commonly detected in the Chesapeake Bay watershed (atrazine [...]


Point of Contact :
Jill A Jenkins
Process Contact :
Jessica K Leet, Jill A Jenkins
Originator :
Jill A Jenkins, Jessica K Leet
Metadata Contact :
Jill A Jenkins
Distributor :
U.S. Geological Survey - ScienceBase
SDC Data Owner :
Wetland and Aquatic Research Center
USGS Mission Area :

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LargemouthMotility.csv 4.59 KB text/csv


Field studies have shown high prevalence of intersex in smallmouth bass (Micropterus dolomieu), and to a lesser extent largemouth bass (Micropterus salmoides), populations in the Chesapeake Bay watershed. The intersex phenotype has been correlated with the presence of the agricultural pesticide atrazine, which is widely used and one of the most commonly detected pesticides in the watershed. However, it is not known whether this intersex phenotype is associated with reduced reproduction function, which could lead to possible impacts at the population level. Natural resource managers of waterbodies with similar concerns are interested in these results.



  • USGS Data Release Products
  • USGS Wetland and Aquatic Research Center



Additional Information


Type Scheme Key
DOI doi:10.5066/P9M2WOJO

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