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‘Toxic stew’ of chemicals causing male fish to carry eggs in testes

Posted By admin On April 21, 2010 @ 3:32 am In Sci Tech | Comments Disabled

Suzanne Goldenberg
London Guardian [1]
Wednesday, April 21st, 2010

More than 80% of the male bass fish in Washington’s major river are now exhibiting female traits such as egg production because of a “toxic stew” of pollutants, scientists and campaigners reported yesterday.

Intersex fish probably result from drugs, such as the contraceptive pill, and other chemicals being flushed into the water and have been found right across the US.

The Potomac Conservancy, which focuses on Washington DC’s river, called for new research to determine what was causing male smallmouth bass to carry immature eggs in their testes. “We have not been able to identify one particular chemical or one particular source,” said Vicki Blazer, a fish biologist with the US geological survey. “We are still trying to get a handle on what chemicals are important.”

But she said early evidence pointed to a mix of chemicals – commonly used at home as well as those used in large-scale farming operations – causing the deformities. The suspect chemicals mimic natural hormones and disrupt the endocrine system, with young fish being particularly susceptible.

Full article here [1]

Toxic stew of chemicals causing male fish to carry eggs in testes  150410banner7 [2]


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URLs in this post:

[1] London Guardian: http://www.guardian.co.uk/environment/2010/apr/21/toxic-stew-chemicals-fish-eggs

[2] Image: http://www.homegain.com/housead/homes_for_sale/index?entryid=11502

[3] Male fish now exhibiting female traits due to toxic chemicals and pharma runoff: http://www.prisonplanet.com/male-fish-now-exhibiting-female-traits-due-to-toxic-chemicals-and-pharma-runoff.html

[4] Hurricanes May Carry Toxic Chemicals from Crude Oil and Dispersant Inland: http://www.prisonplanet.com/hurricanes-may-carry-toxic-chemicals-from-crude-oil-and-dispersant-inland.html

[5] Common household chemicals ‘causing cancer and reduced fertility’: http://www.prisonplanet.com/common-household-chemicals-causing-cancer-and-reduced-fertility.html

[6] Fish on Prozac Are Violent And Obsessive: http://www.prisonplanet.com/fish-on-prozac-are-violent-and-obsessive.html

[7] Cancer causing chemicals found in cola coloring ingredient: http://www.prisonplanet.com/cancer-causing-chemicals-found-in-cola-coloring-ingredient.html

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