Update on Intersex in Bass in the Shenandoah River and Other Chesapeake Tributaries in March 8, 2016, Article in Daily Press

“Sexual oddities plague bass in Chesapeake Bay tributaries,” by Tamara Dietrich in the March 8, 2016, edition of The [Newport News] Daily Press,  gives an update on the occurrence of intersex conditions in Smallmouth Bass and other fish in the Shenandoah River, the Potomac River, the upper James River watershed, and other waterways in the Chesapeake Bay watershed.  Intersex refers to the existence of male and female characteristics within a single individual fish.  Higher than normal occurrences of the condition in bass in Bay tributaries, their possible links to various water contaminants, and the implicatoins of the condition for fish populations have been under study by scientists with the U.S. Geological Survey and other agencies since the early 2000s, when high rates of the condition showed up in dead fish examined as part of fish kills in the Shenandoah/Potomac basin.  The article is available online at http://www.dailypress.com/news/science/dp-nws-sex-change-smallmouth-bass-20160308-story.html (as of 3/21/16), or contact the newspaper at (757) 247-4600 or customerservice@dailypress.com.

For a previous News Grouper item on intersex in fish in the Bay watershed, please see Intersex Conditions in Pennsylvania River Basins Fish Examined in USGS Study Published in June 2014, posted 10/8/14.


Smallmouth Bass illustration by Timothy Knepp, made available for public use by the U.S. Fish and Wildlife Service’s National Digital Library, accessed online at http://digitalmedia.fws.gov/cdm/singleitem/collection/natdiglib/id/2924/rec/3, 3/21/16.


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