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Date:10/5/2009

at where the water came from in the first place. For details listen to a podcast at http://www.usgs.gov/corecast/details.asp?ep=104, visit http://www.usgs.gov/newsroom/article.asp?ID=2315 or contact Heidi Koontz at hkoontz@usgs.gov or (303) 202-4763.

Gender Line Blurred in Fish

Male smallmouth and largemouth bass with female characteristics have been discovered in surprisingly high numbers in eight of nine river basins throughout the United States. In some rivers, more than 70 percent of male bass were "feminized." Scientists suspect the cause of this condition, which leads to immature female eggs in male fish and poorer reproduction, may be linked to substances that have hormonal effects. Endocrine-active compounds like pharmaceuticals, pesticides and household items are possible causes, though some intersex fish were found at sites with no obvious sources of this type of contamination. Because this study didn't examine the causes for this condition, more information is needed about the genetic and environmental factors that might be responsible, as well as the number and kinds of fish affected. Check out http://www.usgs.gov/newsroom/article.asp?ID=2305 for more information, or contact Jo Ellen Hinck at jhinck@usgs.gov or (573) 876-1808.

Improvements of Seismic Proportions

It's time for an upgrade to the nation's earthquake monitoring network! More than 75 million Americans in 39 states face the risk of earthquakes, yet some of the existing monitoring technology is 40 years old. The USGS has awarded $5 million in grants to universities and will provide nearly $7 million in new equipment to upgrade earthquake monitoring stations nationwide, as part of the dev
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Contact: Kara Capelli
kcapelli@usgs.gov
703-648-5086
United States Geological Survey
Source:Eurekalert

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