"Wolfgang" wrote in message
...

"rw" wrote in message
nk.net...

Producing hatchery fish -- even ones bred from wild stock -- doesn't
change the genes...

Yes, it does. Every environment has its mutagens. No two are the same.

Wolfgang
who may have read it in "scientific american"......but doesn't think so.


Some science on the subject is a availble at the NFS web site,
http://www.nativefishsociety.org/library.htm

For example:
DIVERGENCE IN FIRST GENERATION HATCHERY FISH

1) Reisenbichler, R. R. 1994. Genetic factors contributing to declines of
anadromous salmonids
in the Pacific Northwest. D. Stouder, Peter Bisson, and R. Naiman (eds.)
In: Pacific Salmon And Their Ecosystems. Chapman Hall, Inc.

--
Jeff
Kamchatka http://home.teleport.com/~salmo/K2000/
NFS http://www.nativefishsociety.org