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Potomac Male Bass Develop Eggs



 
 
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  #1  
Old October 15th, 2004, 01:32 PM
Frank Reid
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Default Potomac Male Bass Develop Eggs

http://www.msnbc.msn.com/id/6253193

Okay, I thought that the Potomac had been fairly well cleaned up. Now
we have a large percentage (79% in one check) of the male smallmouth
population producing eggs. A large part of the region's water is
supplied by the Potomac.
--
Frank Reid
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  #2  
Old October 15th, 2004, 02:43 PM
Willi & Sue
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Default Potomac Male Bass Develop Eggs

Frank Reid wrote:

http://www.msnbc.msn.com/id/6253193

Okay, I thought that the Potomac had been fairly well cleaned up. Now
we have a large percentage (79% in one check) of the male smallmouth
population producing eggs. A large part of the region's water is
supplied by the Potomac.



Similar thing happening near Denver.

http://www.denverpost.com/Stories/0,...442899,00.html

Willi


  #3  
Old October 16th, 2004, 08:01 AM
Chas Wade
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Default Potomac Male Bass Develop Eggs

Frank Reid wrote:
http://www.msnbc.msn.com/id/6253193

Okay, I thought that the Potomac had been fairly well cleaned up. Now
we have a large percentage (79% in one check) of the male smallmouth
population producing eggs. A large part of the region's water is
supplied by the Potomac.
--
Frank Reid
Reverse Email to reply


I can't find the link now, but a similar thing was found on the
Columbia River in the Hanford Reach. I heard about it on an odd show
on NPR with a women talking about the pseudo hormones introduced in
water from polycarbonate containers. Her claim was that some complex
molecules were introduced in the 1 PPB consentration range, and they
were causing what was called a sex change in some of the Chinook (18%
IIRC). The chromosomes identified the fish as male, but they developed
eggs instead of milt.

The lady claimed that people would have troubles with the same
chemicals and we shouldn't drink water from polycarbonate bottles,
particularly if the plastic was heated anywhere near boiling. I never
managed to cross verify this one, so I forgot about it.

Chas
remove fly fish to reply
http://home.comcast.net/~chas.wade/w...ome.html-.html
San Juan Pictures at:
http://home.comcast.net/~chasepike/wsb/index.html


  #4  
Old October 16th, 2004, 08:01 AM
Chas Wade
external usenet poster
 
Posts: n/a
Default Potomac Male Bass Develop Eggs

Frank Reid wrote:
http://www.msnbc.msn.com/id/6253193

Okay, I thought that the Potomac had been fairly well cleaned up. Now
we have a large percentage (79% in one check) of the male smallmouth
population producing eggs. A large part of the region's water is
supplied by the Potomac.
--
Frank Reid
Reverse Email to reply


I can't find the link now, but a similar thing was found on the
Columbia River in the Hanford Reach. I heard about it on an odd show
on NPR with a women talking about the pseudo hormones introduced in
water from polycarbonate containers. Her claim was that some complex
molecules were introduced in the 1 PPB consentration range, and they
were causing what was called a sex change in some of the Chinook (18%
IIRC). The chromosomes identified the fish as male, but they developed
eggs instead of milt.

The lady claimed that people would have troubles with the same
chemicals and we shouldn't drink water from polycarbonate bottles,
particularly if the plastic was heated anywhere near boiling. I never
managed to cross verify this one, so I forgot about it.

Chas
remove fly fish to reply
http://home.comcast.net/~chas.wade/w...ome.html-.html
San Juan Pictures at:
http://home.comcast.net/~chasepike/wsb/index.html


 




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