Posts Tagged ‘Intersex’

Intersex Fish More Widespread in U.S. Rivers Than Thought

Monday, September 14th, 2009
Intersex in smallmouth and largemouth bass is widespread in numerous river basins throughout the United States, according to U.S. Geological Survey (USGS) research published online in Aquatic Toxicology . Fish with the characteristics of both male and female fish are called intersex fish. It is suspected that fish are changing sex because of rising levels of pollution in rivers, including pharmaceuticals, detergents, and farm chemicals. No one knows if the disruption of hormones in fis

Widespread Occurrence of Intersex Bass Found in U.S. Rivers

Monday, September 14th, 2009
Intersex in smallmouth and largemouth basses is widespread in numerous river basins throughout the United States is the major finding of the most comprehensive and large-scale evaluation of the condition, according to U.S. Geological Survey (USGS) research published online in Aquatic Toxicology . Of the 16 fish species researchers examined from 1995 to 2004, the condition was most common by far in smallmouth and largemouth bass: a third of all male smallmouth bass and a fifth of all male larg