NANFA-- hatchery shad vs. hatchery salmon

Christopher Scharpf (
Tue, 22 Feb 2000 13:00:15 -0400

I've been reading about the growing numbers of shad along the Chesapeake Bay and
Susquehanna River due, to a significant extent, to releases of hatchery raised
shad. My question is,

Why are hatchery shad apparently helping to restore to Atlantic shad
populations, while the reliance upon hatchery salmon along the Pacific Northwest
is largely implicated in the decline of Pacific stocks?

I know that different environmental pressures are involved, but the arguments
against hatchery salmon (e.g., weakening of the gene pool), would seem to hold
true for hatchery shad as well.

If someone could explain this, or point me to papers or other resources that do,
I'd be most appreciative.

Thanks in advance,

Christopher Scharpf
1107 Argone Drive
Baltimore, MD 21218

"The secret of life is to have a task....And the most important thing is -- it
must be something you cannot possibly do!"
Henry Moore, sculptor

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